Refrigerator

Abstract

The embodiment of the invention belongs to the technical field of household appliances, and provides a refrigerator. In the refrigerator, a first drying and filtering structure and a second drying and filtering structure are arranged on the two sides of a throttling device, and the throttling device, the first drying and filtering structure and the second drying and filtering structure are arranged between a condenser and an evaporator. When the refrigerating system is in a refrigerating mode, the compressor communicates with the condenser through the electromagnetic valve, and a refrigerant flowing out of the compressor flows to the evaporator through the condenser, the first drying and filtering structure, the throttling device and the second drying and filtering structure. When the refrigerating system is in a defrosting mode, the compressor communicates with the evaporator through the electromagnetic valve, and a refrigerant flowing out of the compressor flows to the condenser through the evaporator, the second drying and filtering structure, the throttling device and the first drying and filtering structure. Therefore, impurities can be filtered and moisture can be absorbed when the refrigerant flows reversely, and the throttling device is prevented from being blocked to affect operation of a refrigerating system.

Description

Technical Field

[0001] This application relates to the field of home appliance technology. More specifically, it relates to a refrigerator. Background Technology

[0002] When a frost-free refrigerator is in cooling mode, frost will form on the evaporator surface when the finned evaporator surface temperature is below the air dew point temperature and below 0°C. As the frost layer thickens, defrosting is necessary to prevent reduced heat exchange efficiency and increased compartment temperature due to frost blockage of the finned evaporator.

[0003] Currently, defrosting can be performed by refrigerant reversal when defrosting mode is activated. Specifically, the refrigerant flows in reverse through various components of the refrigeration system, with the high-temperature, high-pressure gas from the compressor entering the evaporator, and the heat from the high-temperature, high-pressure gas is used to defrost the evaporator.

[0004] During normal refrigeration, the high-temperature exhaust from the compressor, after being cooled by the condenser, first passes through a dryer filter for system impurity filtration and moisture absorption before entering the throttling device for pressure reduction. The depressurized refrigerant then enters the evaporator for refrigeration. However, during refrigerant counter-current defrosting, the compressor exhaust directly enters the throttling device through the evaporator. The counter-current process lacks impurity filtration and moisture absorption, making it prone to malfunctions and reducing reliability. Summary of the Invention

[0005] This application provides a refrigerator that can solve the problem in related technologies where, during refrigerant backflow defrosting, the compressor exhaust directly enters the throttling device through the evaporator, and the backflow process lacks impurity filtration and moisture absorption, making it prone to malfunction and reducing reliability.

[0006] In a first aspect, embodiments of this application provide a refrigerator, comprising:

[0007] Box;

[0008] The refrigeration system installed inside the casing includes: a compressor, a condenser, an evaporator, a throttling device, a first drying and filtration structure, and a second drying and filtration structure; the compressor is connected to the condenser and the evaporator respectively, and a solenoid valve is installed between the compressor and the condenser and the evaporator;

[0009] The first drying and filtration structure and the second drying and filtration structure are disposed on both sides of the throttling device; the throttling device, the first drying and filtration structure and the second drying and filtration structure are disposed between the condenser and the evaporator;

[0010] When the refrigeration system is in refrigeration mode, the solenoid valve connects the compressor and the condenser. The refrigerant flowing out of the compressor passes through the condenser, the first drying and filtering structure, the throttling device, and the second drying and filtering structure, and flows to the evaporator.

[0011] When the refrigeration system is in defrost mode, the solenoid valve connects the compressor to the evaporator. The refrigerant flowing from the compressor passes through the evaporator, the second drying and filter structure, the throttling device, and the first drying and filter structure before flowing to the condenser.

[0012] In this embodiment, the first and second drying filter structures are disposed on either side of the throttling device, and the throttling device, the first drying filter structure, and the second drying filter structure are disposed between the condenser and the evaporator. When the refrigeration system is in cooling mode, the solenoid valve connects the compressor to the condenser, and the refrigerant flowing from the compressor passes through the condenser, the first drying filter structure, the throttling device, and the second drying filter structure before flowing to the evaporator. When the refrigeration system is in defrosting mode, the solenoid valve connects the compressor to the evaporator, and the refrigerant flowing from the compressor passes through the evaporator, the second drying filter structure, the throttling device, and the first drying filter structure before flowing to the condenser. This allows for impurity filtration and moisture absorption during refrigerant backflow, preventing blockage of the throttling device and ensuring the smooth operation of the refrigeration system.

[0013] In some embodiments of this application, the refrigerator further includes a first housing having a first receiving cavity. The first housing is provided with a first port, a second port, a third port, and a fourth port communicating with the first receiving cavity. Within the receiving cavity, a first sub-receiving cavity and a second sub-receiving cavity are provided in the depth direction via an isolation member. The first sub-receiving cavity communicates with the first port and the third port, and the second sub-receiving cavity communicates with the second port and the fourth port. The first port communicates with the condenser, and the second port communicates with the evaporator. The two ends of the throttling device are respectively connected to the third port and the fourth port.

[0014] The first drying and filtering structure is filled and disposed in the first sub-accommodating cavity; the second drying and filtering structure is filled and disposed in the second sub-accommodating cavity.

[0015] In this embodiment, the first drying filter structure and the second drying filter structure can be set as an integral structure for easy installation.

[0016] In some embodiments of this application, the first sub-receiving cavity and the second sub-receiving cavity are symmetrically arranged in the depth direction.

[0017] In this embodiment, the refrigerator further includes a second housing and a third housing. The second housing has a second receiving cavity, and the third housing has a third receiving cavity. The second housing is provided with a first port and a third port communicating with the second receiving cavity. The third housing is provided with a second port and a fourth port communicating with the third receiving cavity. The first port is connected to the condenser, and the second port is connected to the evaporator. The two ends of the throttling device are respectively connected to the third port and the fourth port.

[0018] The first drying and filtering structure is filled and disposed in the second receiving cavity; the second drying and filtering structure is filled and disposed in the third receiving cavity.

[0019] In this embodiment, the first drying filter structure and the second drying filter structure can be formed into two drying filters disposed on both sides of the throttling device, which facilitates maintenance.

[0020] In some embodiments of this application, the first drying and filtering structure includes a first filter screen, a first desiccant, and a second filter screen; the first filter screen is fixedly disposed in the first sub-accommodating cavity and close to the first port; the second filter screen is fixedly disposed in the first sub-accommodating cavity and close to the separator; the first desiccant is filled between the first filter screen and the second filter screen.

[0021] The second drying and filtration structure includes a third filter, a second desiccant, and a fourth filter; the third filter is fixedly disposed in the second sub-receiving cavity and close to the second port; the fourth filter is fixedly disposed in the second sub-receiving cavity and close to the separator; the second desiccant is filled between the third filter and the fourth filter.

[0022] In this embodiment, two filter screens and a desiccant disposed between the two filter screens are provided in the first and second drying and filtering structures, which can achieve impurity filtration and moisture absorption in both forward and reverse flow, thereby preventing the throttling device from becoming clogged.

[0023] In some embodiments of this application, the first filter, the second filter, the third filter, and the fourth filter are conical in shape;

[0024] The first filter is positioned with its top facing the first port, the second filter is positioned with its top facing the first port, the third filter is positioned with its top facing the second port, and the fourth filter is positioned with its top facing the second port.

[0025] In this embodiment, the filter screen can be set to a conical shape, with the top of the filter screen of the first drying filter structure facing the first port of the drying filter device, and the top of the filter screen of the second drying filter structure facing the second port of the drying filter device, thereby increasing the filtration area and improving the filtration efficiency.

[0026] In some embodiments of this application, the pore size of the first filter screen is larger than that of the second filter screen; the pore size of the fourth filter screen is larger than that of the third filter screen.

[0027] In this embodiment, the pore size of the first filter screen can be larger than that of the second filter screen, and the pore size of the fourth filter screen can be larger than that of the third filter screen, so that impurities in the refrigerant can be retained in the drying and filtering device.

[0028] In some embodiments of this application, the isolation member is provided with a first channel and a second channel, the first channel being used to connect the first sub-accommodating cavity and the third port; the second channel being used to connect the second sub-accommodating cavity and the fourth port.

[0029] In this embodiment, two channels can be provided in the isolation component, so that the throttling device can be connected to the first drying filter structure and the second drying filter structure through these two channels. This allows the refrigerant to enter the throttling device after passing through the drying filter in both forward and reverse flow, thus preventing the throttling device from becoming blocked.

[0030] In some embodiments of this application, the isolation member is a partition, the third port is located on one side close to the partition, and the fourth port is located on the other side close to the partition.

[0031] In this embodiment, the separator can be a partition, and a third port and a fourth port are provided on both sides of the partition, so that the throttling device can be connected to the first drying filter structure and the second drying filter structure through the third port and the fourth port. In this way, the refrigerant can enter the throttling device after passing through the drying filter in both forward and reverse flow, which can avoid the throttling device from becoming blocked.

[0032] Secondly, this application provides a refrigerator, comprising:

[0033] Box;

[0034] The refrigeration system housed within the enclosure includes: a compressor, a condenser, an evaporator, a throttling device, and a drying and filtering device; the compressor is connected to both the condenser and the evaporator, and a solenoid valve is provided between the compressor and both the condenser and the evaporator; the throttling device and the drying and filtering device are located between the condenser and the evaporator.

[0035] When the refrigeration system is in refrigeration mode, the solenoid valve connects the compressor and the condenser. The refrigerant flowing out of the compressor passes through the condenser, the drying and filtering device, the throttling device, and the drying and filtering device before flowing to the evaporator.

[0036] When the refrigeration system is in defrost mode, the solenoid valve connects the compressor to the evaporator. The refrigerant flowing from the compressor passes through the evaporator, the drying and filtering device, the throttling device, and the drying and filtering device before flowing to the condenser.

[0037] In this embodiment, the drying and filtering device and the throttling device are disposed between the condenser and the evaporator. When the refrigeration system is in cooling mode, the solenoid valve connects the compressor to the condenser. The refrigerant flowing from the compressor passes through the condenser, the drying and filtering device, the throttling device, and the drying and filtering device before flowing to the evaporator. When the refrigeration system is in defrosting mode, the solenoid valve connects the compressor to the evaporator. The refrigerant flowing from the compressor passes through the evaporator, the drying and filtering device, the throttling device, and the drying and filtering device before flowing to the condenser. This allows for impurity filtration and moisture absorption during refrigerant backflow, preventing blockage of the throttling device and ensuring the smooth operation of the refrigeration system. Attached Figure Description

[0038] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0039] Figure 1 This is a schematic diagram of a refrigerator's refrigeration system as an example of this application;

[0040] Figure 2 A schematic diagram of a refrigerator provided for an embodiment of this application;

[0041] Figure 3 This is a schematic diagram of the structure of a refrigeration system 103 provided in an embodiment of this application;

[0042] Figure 4 A schematic diagram illustrating the refrigerant flow direction in the refrigeration system 103 of this application when it is in refrigeration mode;

[0043] Figure 5 A schematic diagram of the refrigerant flow in the defrosting mode of the refrigeration system 103 as an example of this application;

[0044] Figure 6 This is a schematic diagram of the structure of a refrigeration system 103 provided in an embodiment of this application;

[0045] Figure 7 This is a schematic diagram of the structure of a refrigeration system 103 provided in an embodiment of this application;

[0046] Figure 8 This application provides a schematic diagram of the structure of a first drying and filtration structure and a second drying and filtration structure.

[0047] Figure 9 This application provides a schematic diagram of the structure of a first drying and filtration structure and a second drying and filtration structure.

[0048] Figure 10 This application provides a schematic diagram of the structure of a first drying and filtration structure and a second drying and filtration structure.

[0049] Figure 11 This application provides a schematic diagram of the structure of a first drying and filtration structure and a second drying and filtration structure.

[0050] Figure 12 This application provides a schematic diagram of the structure of a first drying and filtration structure and a second drying and filtration structure.

[0051] Figure 13 A schematic diagram of a first filter 361 as an example of this application;

[0052] Figure 14 This is a schematic diagram illustrating the refrigerant flow direction when the refrigeration system 103 is in refrigeration mode and defrosting mode, as an example of this application.

[0053] Figure 15 This is a schematic diagram of a first drying filter structure and a second drying filter structure provided in the embodiments of this application.

[0054] Explanation of reference numerals in the attached figures:

[0055] 10 - Refrigerator; 11 - Cold storage compartment;

[0056] 101 - Box body; 102 - Door body;

[0057] 103 - Refrigeration system; 104 - Control components;

[0058] 31-Compressor; 32-Condenser;

[0059] 33-Evaporator; 34-Solenoid valve;

[0060] 35 - Throttling device; 36 - First drying and filtering structure;

[0061] 37-Second drying and filtration structure; 38-First housing;

[0062] 39 - Second shell; 310 - Third shell;

[0063] 381 - First receiving cavity; 391 - Second receiving cavity;

[0064] 3101 - Third receiving cavity; 3811 - First sub-receiving cavity;

[0065] 3812 - Second sub-receiving cavity; 383 - Isolation element;

[0066] 361 - First filter screen; 362 - First desiccant;

[0067] 363 - Second filter; 371 - Third filter;

[0068] 372 - Second desiccant; 373 - Fourth filter screen;

[0069] a1 - First port; a2 - Second port;

[0070] a3 - Third port; a4 - Fourth port;

[0071] b1 - First connection port; b2 - Second connection port;

[0072] b3 - Third connection port; b4 - Fourth connection port;

[0073] P1 - First channel; P2 - Second channel. Detailed Implementation

[0074] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0075] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0076] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0077] During the cooling process of an air-cooled refrigerator, when the surface temperature of the finned evaporator is lower than the air dew point temperature and below 0°C, frost will form on the evaporator surface. Over time, the frost layer will become thicker and thicker, requiring defrosting to prevent the finned evaporator from becoming clogged with frost, which would reduce heat exchange efficiency, reduce the cross-section of the air duct, and cause poor air circulation, resulting in an increase in the compartment temperature.

[0078] Currently, defrosting can be achieved by refrigerant counterflow. Specifically, the refrigerant is flowed counterflow through various components of the refrigeration system. The high-temperature, high-pressure gas flowing from the compressor enters the evaporator, and the heat from the high-temperature, high-pressure gas is used to defrost the evaporator.

[0079] Figure 1 This is a schematic diagram of a refrigerator's refrigeration system as an example of this application, such as... Figure 1 As shown, during normal refrigeration, the high-temperature exhaust gas from the compressor is cooled by the condenser, then passes through a dryer filter for system impurity filtration and moisture absorption, and then enters the throttling device for pressure reduction. The refrigerant after pressure reduction enters the evaporator for refrigeration.

[0080] However, during refrigerant counter-flow defrosting, the compressor's exhaust gas directly enters the throttling device through the evaporator. Since there is no impurity filtration or moisture absorption process during the counter-flow process, the throttling device is prone to blockage, which can lead to malfunctions, affect the operation of the refrigeration system, and reduce its reliability.

[0081] Therefore, this application provides a refrigerator with a drying and filtering structure on both sides of the throttling device. Both the forward and reverse flow of refrigerant pass through the throttling device and the filter dryer, which can prevent the throttling device from becoming blocked during the reverse flow process without impurity filtration and moisture absorption, thus affecting the operation of the refrigeration system and improving reliability.

[0082] The technical solutions of this application will be described in detail below with reference to specific embodiments. The following specific embodiments can be combined with each other or exist independently. The same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0083] First, the specific structure of a refrigerator provided in the embodiments of this application will be described, for example, Figure 2 A schematic diagram of a refrigerator provided in an embodiment of this application is shown below. Figure 2 As shown, the refrigerator 10 includes a cabinet 101, a door 102, and a storage compartment disposed within the cabinet 101.

[0084] In one possible implementation, such as Figure 2 As shown, the storage room includes a refrigerator compartment 11 and a freezer compartment. Figure 2 The freezer compartment is not shown.

[0085] Understandable. Figure 2 This is merely a schematic diagram of a refrigerator applicable to this application; other refrigerator structures are also possible, and this application does not impose any limitations on them.

[0086] In one possible implementation, the refrigerator 10 also includes a refrigeration system 103 and a control component 104. The refrigeration system 103 and the control component 104 may be electrically connected.

[0087] For example, Figure 3 This is a schematic diagram of the structure of a refrigeration system 103 provided in an embodiment of this application, as shown below. Figure 3 As shown, the refrigeration system 103 includes a compressor 31, a condenser 32, and an evaporator 33.

[0088] The compressor 31 is configured to provide power for the cooling of the refrigerator 10.

[0089] The condenser 32 is configured to dissipate heat from the refrigerant from the compressor 31.

[0090] Evaporator 33 is configured to provide cooling capacity to the refrigerator compartment 11 and / or the freezer compartment.

[0091] The compressor 31 is connected to the condenser 32 and the evaporator 33. A solenoid valve 34 is provided between the compressor 31 and the condenser 32 and the evaporator 33. The solenoid valve 34 can control the flow direction of the refrigerant flowing out of the compressor 31. For example, in the cooling mode, the refrigerant is controlled to flow from the compressor 31 to the condenser 32. In the defrosting mode, the refrigerant is controlled to flow from the compressor 31 to the evaporator 33.

[0092] Specifically, the solenoid valve 34 is electrically connected to the control component 104, and the control component 104 can control the solenoid valve 34 according to the refrigerant mode.

[0093] In one possible implementation, refer to Figure 5 or Figure 5 The solenoid valve 34 includes a first connection port b1, a second connection port b2, a third connection port b3, and a fourth connection port b4. The first connection port b1 is connected to the exhaust port of the compressor 31, the second connection port b2 is connected to the condenser 32, the third connection port b3 is connected to the intake port of the compressor 31, and the fourth connection port b4 is connected to the evaporator 33.

[0094] Control component 104 is configured as follows:

[0095] When the refrigeration system 103 is in refrigeration mode, the first connection port b1 of the control solenoid valve 34 is connected to the second connection port b2, and the third connection port b3 is connected to the fourth connection port b4. The refrigerant flowing out of the exhaust port of the compressor 31 flows to the condenser 32, then flows through the condenser 32 to the evaporator 33, and finally flows to the compressor 31 to complete the refrigeration cycle of the refrigerator.

[0096] When the refrigeration system 103 is in defrost mode, the first connection port b1 of the control solenoid valve 34 is connected to the fourth connection port b4, and the second connection port b2 is connected to the third connection port b3. The refrigerant flowing out of the exhaust port of the compressor 31 flows to the evaporator 33, then from the evaporator 33 to the condenser 32, and finally to the compressor 31.

[0097] For example, Figure 4 This is a schematic diagram illustrating the refrigerant flow direction of the refrigeration system 103 in refrigeration mode, as exemplified in this application. Figure 4 As shown, low-temperature, low-pressure refrigerant is drawn into compressor 31 and compressed into high-temperature, high-pressure refrigerant in the cylinder of compressor 31. Then, it enters condenser 32 through solenoid valve 34. The high-temperature, high-pressure refrigerant gas dissipates heat through condenser 32, and its temperature continuously decreases, gradually being cooled into room-temperature, high-pressure saturated vapor. Then, it is throttled and depressurized through a throttling device (not shown in the figure) between condenser 32 and evaporator 33, becoming room-temperature, low-pressure wet vapor. Subsequently, it begins to absorb heat and vaporize in evaporator 33, which not only lowers the temperature of evaporator 33 and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. Then, it passes through compressor 31 again to complete the refrigerator refrigeration cycle.

[0098] For example, Figure 5 This is a schematic diagram illustrating the refrigerant flow direction of the refrigeration system 103 in defrost mode, as shown in the example of this application. Figure 5 As shown, low-temperature, low-pressure refrigerant is drawn into compressor 31 and compressed into high-temperature, high-pressure refrigerant within the compressor 31 cylinder. It then flows to evaporator 33 to defrost, and subsequently enters condenser 32 through a throttling device (not shown) between condenser 32 and evaporator 33 for further evaporation, before returning to compressor 31. The high-temperature, high-pressure refrigerant melts the frost condensed on evaporator 33 through heat conduction, thus achieving the defrosting purpose.

[0099] In one possible implementation, Figure 6 This is a schematic diagram of the structure of a refrigeration system 103 provided in an embodiment of this application, as shown below. Figure 6 As shown, the refrigeration system 103 also includes a throttling device 35, a first drying and filtering structure 36, and a second drying and filtering structure 37.

[0100] The throttling device 35 is disposed between the condenser 32 and the evaporator 33, and the first drying filter structure 36 and the second drying filter structure 37 are disposed on both sides of the throttling device 35.

[0101] When the refrigeration system 103 is in refrigeration mode, the solenoid valve 34 connects the compressor 31 and the condenser 32. The refrigerant flowing out of the compressor 31 passes through the condenser 32, the first drying and filtering structure 36, the throttling device 35, and the second drying and filtering structure 37, and flows to the evaporator 33.

[0102] When the refrigeration system 103 is in defrosting mode, the solenoid valve 34 connects the compressor 31 and the evaporator 33. The refrigerant flowing out of the compressor 31 passes through the evaporator 33, the second drying and filtering structure 37, the throttling device 35, and the first drying and filtering structure 36, and flows to the condenser 32.

[0103] In this embodiment, the first and second drying filter structures are disposed on either side of the throttling device, and the throttling device, the first drying filter structure, and the second drying filter structure are positioned between the condenser and the evaporator. When the refrigeration system is in cooling mode, the solenoid valve connects the compressor to the condenser, and the refrigerant flowing from the compressor passes through the condenser, the first drying filter structure, the throttling device, and the second drying filter structure before flowing to the evaporator. When the refrigeration system is in defrosting mode, the solenoid valve connects the compressor to the evaporator, and the refrigerant flowing from the compressor passes through the evaporator, the second drying filter structure, the throttling device, and the first drying filter structure before flowing to the condenser. This allows for impurity filtration and moisture absorption during refrigerant backflow, preventing blockage of the throttling device and ensuring the smooth operation of the refrigeration system.

[0104] In one possible implementation, the third connection port b3 of the solenoid valve 34 is connected to the air inlet of the compressor 31 through a first pipeline, and a portion of the first pipeline is fitted into the throttling device 35.

[0105] Figure 7 This is a schematic diagram of the structure of a refrigeration system 103 provided in an embodiment of this application, as shown below. Figure 7 As shown, the first pipe can be extended so that part of the pipe can be in contact with the throttling device 35, so that the cold energy of the pipe can be transferred into the throttling device 35, which can reduce the temperature of the refrigerant in the throttling device 35, thereby increasing the subcooling of the refrigerator. Furthermore, due to the reuse of the cold energy of the refrigeration system 103, energy saving is achieved.

[0106] It is understandable that this method increases the supercooling level of the refrigerator, but the increase is small and will not cause food to freeze or ice over-freeze, thus affecting the taste and quality of the food.

[0107] In one possible implementation, Figure 8A schematic diagram of a first drying and filtration structure and a second drying and filtration structure provided in the embodiments of this application is shown below. Figure 8 As shown, the refrigerator 10 further includes: a first housing 38 having a first receiving cavity 381, the first housing 38 being provided with a first port a1, a second port a2, a third port a3 and a fourth port a4 communicating with the first receiving cavity 381. The first port a1 is connected to the condenser 32, and the second port a2 is connected to the evaporator 33.

[0108] Within the first receiving cavity 381, a first sub-receiving cavity 3811 and a second sub-receiving cavity 3812 are provided in the depth direction via a separator 383. A first drying filter structure 36 is filled within the first sub-receiving cavity 3811. Figure 8 The first drying filter structure 36 is not shown in the diagram. The second drying filter structure 37 is filled and disposed within the second sub-receiving cavity 3812. Figure 8 (The second drying filter structure 37 is not shown in the diagram). The first sub-receiving cavity 3811 is connected to the first port a1 and the third port a3, the second sub-receiving cavity 3812 is connected to the second port a2 and the fourth port a4, and the two ends of the throttling device 35 are connected to the third port a3 and the fourth port a4, respectively.

[0109] When the refrigeration system 103 is in refrigeration mode, the solenoid valve 34 connects the compressor 31 and the condenser 32. The refrigerant flowing out of the compressor 31 passes through the condenser 32, the first port a1, the first drying and filtering structure 36, the third port a3, the throttling device 35, the fourth port a4, the second drying and filtering structure 37, and the second port a2, and flows to the evaporator 33.

[0110] When the refrigeration system 103 is in defrosting mode, the solenoid valve 34 connects the compressor 31 and the evaporator 33. The refrigerant flowing out of the compressor 31 passes through the evaporator 33, the second port a2, the second drying and filtering structure 37, the fourth port a4, the throttling device 35, the third port a3, the first drying and filtering structure 36, and the first port a1, and flows to the condenser 32.

[0111] In this embodiment, the first drying filter structure and the second drying filter structure can be set as an integral structure for easy installation.

[0112] In one possible implementation, Figure 9 A schematic diagram of a first drying and filtration structure and a second drying and filtration structure provided in the embodiments of this application is shown below. Figure 9 As shown, the isolation component 383 is a partition, the third port a3 is located on the side close to the partition, and the fourth port a4 is located on the other side close to the partition.

[0113] By setting a third port and a fourth port on both sides of the partition, the throttling device can be connected to the first and second drying and filtering structures through the third and fourth ports. This ensures that the refrigerant enters the throttling device after passing through the drying and filtering structures in both forward and reverse flow, thus preventing the throttling device from becoming clogged.

[0114] In one possible implementation, Figure 10 A schematic diagram of a first drying and filtration structure and a second drying and filtration structure provided in the embodiments of this application is shown below. Figure 10 As shown, the isolator 383 is provided with a first channel P1 and a second channel P2. The first channel P1 is used to connect the first sub-receiving cavity 3811 and the third port a3. The second channel P2 is used to connect the second sub-receiving cavity 3812 and the fourth port a4.

[0115] It is understandable that the spacer 383 could be a cylindrical component. Figure 10 This is a cross-sectional view of the first drying filter structure 36 and the second drying filter structure 37 in the depth direction. Figure 10 The first channel P1 and the second channel P2 are right-angled channels. The first channel P1 and the second channel P2 can also be set as arc-shaped channels. This application does not limit this.

[0116] In one possible implementation, Figure 11 This application provides a schematic diagram of a first drying and filtration structure and a second drying and filtration structure, as shown in the embodiments. Figure 11 The first drying and filtration structure 36 includes a first filter screen 361, a first desiccant 362, and a second filter screen 363. The first filter screen 361 is fixedly disposed within the first sub-receiving cavity 3811 and near the first port a1. The second filter screen 363 is fixedly disposed within the first sub-receiving cavity 3811 and near the separator 383. The first desiccant 362 is filled between the first filter screen 361 and the second filter screen 363.

[0117] The second drying and filtration structure 37 includes a third filter 371, a second desiccant 372, and a fourth filter 373. The third filter 371 is fixedly disposed within the second sub-receiving cavity 3812 and near the second port a2. The fourth filter 373 is fixedly disposed within the second sub-receiving cavity 3812 and near the separator 383. The second desiccant 372 is filled between the third filter 371 and the fourth filter 373.

[0118] In this embodiment, the first drying filter structure 36 and the second drying filter structure 37 consist of two filter screens and a desiccant disposed between the two filter screens. This allows for impurity filtration and moisture absorption when the refrigerant flows in both the forward and reverse directions, thereby preventing the throttling device from becoming clogged.

[0119] In one possible implementation, Figure 12 A schematic diagram of a first drying and filtration structure and a second drying and filtration structure provided in the embodiments of this application is shown below. Figure 12 As shown, the first filter 361, the second filter 363, the third filter 371, and the fourth filter 373 are conical.

[0120] The first filter 361 is oriented with its top facing the first port a1, and the second filter 363 is oriented with its top facing the first port a1. In other words, the first filter 361 and the second filter 363 are oriented in the same direction.

[0121] The third filter 371 is oriented with its top facing the second port a2, and the fourth filter 373 is oriented with its top facing the second port a2. That is, the third filter 371 and the fourth filter 373 are oriented in the same direction, and their orientations are opposite to those of the first filter 361 and the second filter 363.

[0122] It should be noted that, Figure 12 This is a cross-sectional view of the first drying filter structure 36 and the second drying filter structure 37 in the depth direction, taking the first filter screen 361 as an example. Figure 13 This is a schematic diagram of a first filter 361 as an example of this application. The top of the first filter 361 is as shown... Figure 13 As shown.

[0123] In this embodiment, the filter screen can be set to a conical shape, with the top of the filter screen of the first drying filter structure 36 facing the first port and the top of the filter screen of the second drying filter structure 37 facing the second port, thereby increasing the filtration area and improving the filtration efficiency.

[0124] In one possible implementation, the first sub-receiving cavity 3811 and the second sub-receiving container 3812 can be symmetrically arranged in the depth direction. It should be noted that the symmetry of the first sub-receiving cavity 3811 and the second sub-receiving container 3812 can be understood as the first drying filter structure 36 within the first sub-receiving cavity 3811 and the second irritation filter structure 37 within the second sub-receiving container 3812 having mirror symmetry in shape, size, etc., for example... Figure 12 As shown, the first filter screen 361 and the fourth filter screen 373 are symmetrically arranged, and the filter particles of the first filter screen 361 and the fourth filter screen 373 are the same size. The second filter screen 363 and the third filter screen 371 are symmetrically arranged, and the filter particles of the second filter screen 363 and the third filter screen 371 are the same size. The first desiccant 362 and the second desiccant 372 are symmetrically arranged, and the moisture absorption capacity or moisture absorption rate of the first desiccant 362 and the second desiccant 372 are the same.

[0125] By symmetrically arranging the first sub-receiving cavity 3811 and the second sub-receiving cavity 3812, the refrigerant can pass through the same drying and filtration structure in both forward and reverse flow, which can maintain the consistent dryness and cleanliness inside the refrigeration system and ensure the stability and performance of the refrigeration system.

[0126] Figure 14 This is a schematic diagram illustrating the refrigerant flow direction when the refrigeration system 103 is in refrigeration mode and defrosting mode, as exemplified by this application. Figure 14 As shown, when the refrigeration system 103 is in refrigeration mode, the refrigerant flowing out from the condenser 32 passes through the first port a1, the first filter 361, the first desiccant 362, the second filter 363, the throttling device 35, the third filter 371, the second desiccant 372, and the fourth filter 373, and flows out from the second port a2.

[0127] When the refrigeration system 103 is in defrosting mode, the refrigerant flowing out from the evaporator 33 passes through the second port a2, the fourth filter 373, the second desiccant 372, the third filter 371, the throttling device 35, the second filter 363, the first desiccant 362, and the first filter 361, and flows out from the first port a1.

[0128] In one possible implementation, the pore size of the first filter 361 is larger than that of the second filter 363. The pore size of the fourth filter 373 is larger than that of the third filter 371.

[0129] The pore size of the first filter screen 361 can be the same as that of the fourth filter screen 373, and the pore size of the second filter screen 363 can be the same as that of the third filter screen 371. This ensures that the flow velocity in the drying and filtering device 36 is the same whether the refrigerant is flowing forward or in reverse.

[0130] By setting the aperture of the first filter screen 361 to be larger than that of the second filter screen 363, and the aperture of the fourth filter screen 373 to be larger than that of the third filter screen 371, impurities in the refrigerant can be retained in the drying and filtering device.

[0131] In one possible implementation, the pore size of the first filter 361 is larger than that of the second filter 363. The pore size of the fourth filter 373 is smaller than that of the third filter 371.

[0132] By setting the aperture of the first filter screen 361 to be larger than that of the second filter screen 363, and the aperture of the fourth filter screen 373 to be smaller than that of the third filter screen 371, impurities in the refrigerant can be left in the pipeline outside the drying and filtering device.

[0133] In addition to filtering impurities, the first filter screen 361, the second filter screen 363, the third filter screen 371, and the fourth filter screen 373 can also fix the desiccant.

[0134] In one possible implementation, the throttling device 35 can be a capillary tube, through which throttling is achieved.

[0135] In one possible implementation, the throttling device 35 can be a throttling valve, which achieves throttling by adjusting the opening of the throttling valve.

[0136] In one possible implementation, Figure 15 A schematic diagram of a first drying and filtration structure and a second drying and filtration structure provided in the embodiments of this application is shown below. Figure 15 As shown, the refrigerator 10 also includes a second housing 39 and a third housing 310. The second housing 39 has a second receiving cavity 391, and the third housing 310 has a third receiving cavity 3101.

[0137] The second housing 39 is provided with a first port a1 and a third port a3 communicating with the second receiving cavity 391. The third housing 310 is provided with a second port a2 and a fourth port a4 communicating with the third receiving cavity 3101. The first port a1 is connected to the condenser, and the second port a2 is connected to the evaporator. The two ends of the throttling device 35 are connected to the third port a3 and the fourth port a4, respectively.

[0138] The first drying and filtering structure 36 is filled and disposed within the second receiving cavity 391. The second drying and filtering structure 37 is filled and disposed within the third receiving cavity 3101.

[0139] In this embodiment, the first drying filter structure and the second drying filter structure can be formed into two drying filters disposed on both sides of the throttling device, which facilitates maintenance.

[0140] The structures of the first drying filter structure 36 and the second irritation filter structure 37 can be referred to in the above embodiments, and will not be repeated here. For example, refer to Figure 12 .

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0142] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of embodiments suitable for specific application considerations.

[0143] In this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document indicates that the preceding and following related objects have an "or" relationship.

[0144] In this application, "multiple" refers to two or more. The use of terms like "first," "second," etc., in the embodiments of this application is for illustrative purposes and to distinguish the objects being described; they do not indicate any order or specific limitation on the number of devices in the embodiments of this application, and cannot constitute any limitation on the embodiments of this application. For example, "first threshold" and "second threshold" are only used to distinguish different thresholds, and do not represent differences in the size, priority, or importance of these two thresholds.

[0145] In this application, terms such as "exemplary," "in some embodiments," and "in other embodiments" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the term "exemplary" is used to present the concept in a specific manner.

[0146] In this application, the terms "of", "corresponding", "corresponding", and "related" may sometimes be used interchangeably. It should be noted that when the distinction is not emphasized, they have the same meaning.

[0147] In this application, "equal to" can be used with "less than" or "greater than", but not simultaneously with both. When "equal to" is used with "less than", it applies to the technical solution adopted by "less than". When "equal to" is used with "greater than", it applies to the technical solution adopted by "greater than".

Claims

1. A refrigerator, characterized in that, include: Box; The refrigeration system installed inside the casing includes: a compressor, a condenser, an evaporator, a throttling device, a first drying filter structure, and a second drying filter structure; the compressor is connected to the condenser and the evaporator respectively, and a solenoid valve is installed between the compressor and the condenser and the evaporator; The first drying and filtration structure and the second drying and filtration structure are disposed on both sides of the throttling device; the throttling device, the first drying and filtration structure and the second drying and filtration structure are disposed between the condenser and the evaporator; When the refrigeration system is in refrigeration mode, the solenoid valve connects the compressor and the condenser. The refrigerant flowing out of the compressor passes through the condenser, the first drying and filtering structure, the throttling device, and the second drying and filtering structure, and flows to the evaporator. When the refrigeration system is in defrost mode, the solenoid valve connects the compressor to the evaporator. The refrigerant flowing from the compressor passes through the evaporator, the second drying and filter structure, the throttling device, and the first drying and filter structure before flowing to the condenser.

2. The refrigerator according to claim 1, characterized in that, The refrigerator further includes a first housing having a first receiving cavity. The first housing is provided with a first port, a second port, a third port, and a fourth port communicating with the first receiving cavity. Within the receiving cavity, a first sub-receiving cavity and a second sub-receiving cavity are provided in the depth direction via an insulating member. The first sub-receiving cavity communicates with the first port and the third port, and the second sub-receiving cavity communicates with the second port and the fourth port. The first port communicates with the condenser, and the second port communicates with the evaporator. The two ends of the throttling device are respectively connected to the third port and the fourth port. The first drying and filtering structure is filled and disposed in the first sub-accommodating cavity; the second drying and filtering structure is filled and disposed in the second sub-accommodating cavity.

3. The refrigerator according to claim 2, characterized in that, The first sub-receiving cavity and the second sub-receiving cavity are symmetrically arranged in the depth direction.

4. The refrigerator according to claim 1, characterized in that, The refrigerator further includes a second housing and a third housing, the second housing having a second receiving cavity and the third housing having a third receiving cavity; the second housing is provided with a first port and a third port communicating with the second receiving cavity; the third housing is provided with a second port and a fourth port communicating with the third receiving cavity; the first port is communicating with the condenser and the second port is communicating with the evaporator; the two ends of the throttling device are respectively connected to the third port and the fourth port; The first drying and filtering structure is filled and disposed in the second receiving cavity; the second drying and filtering structure is filled and disposed in the third receiving cavity.

5. The refrigerator according to claim 2 or 3, characterized in that, The first drying and filtration structure includes a first filter screen, a first desiccant, and a second filter screen; the first filter screen is fixedly disposed within the first sub-accommodating cavity and near the first port; the second filter screen is fixedly disposed within the first sub-accommodating cavity and near the insulating member; the first desiccant is filled between the first filter screen and the second filter screen; The second drying and filtration structure includes a third filter, a second desiccant, and a fourth filter; the third filter is fixedly disposed in the second sub-receiving cavity and close to the second port; the fourth filter is fixedly disposed in the second sub-receiving cavity and close to the separator; the second desiccant is filled between the third filter and the fourth filter.

6. The refrigerator according to claim 5, characterized in that, The first filter screen, the second filter screen, the third filter screen, and the fourth filter screen are conical in shape; The first filter is positioned with its top facing the first port, and the second filter is positioned with its top facing the first port. The third filter is positioned with its top facing the second port, and the fourth filter is positioned with its top facing the second port.

7. The refrigerator according to claim 5 or 6, characterized in that, The pore size of the first filter screen is larger than that of the second filter screen; the pore size of the fourth filter screen is larger than that of the third filter screen.

8. The refrigerator according to claim 2 or 3, characterized in that, The isolation component is provided with a first channel and a second channel. The first channel is used to connect the first sub-accommodating cavity and the third port; the second channel is used to connect the second sub-accommodating cavity and the fourth port.

9. The refrigerator according to claim 2 or 3, characterized in that, The isolation component is a partition, the third port is located on one side close to the partition, and the fourth port is located on the other side close to the partition.

10. A refrigerator, characterized in that, include: Box; The refrigeration system housed within the enclosure includes: a compressor, a condenser, an evaporator, a throttling device, and a drying and filtering device; the compressor is connected to both the condenser and the evaporator, and a solenoid valve is provided between the compressor and both the condenser and the evaporator; the throttling device and the drying and filtering device are located between the condenser and the evaporator. When the refrigeration system is in refrigeration mode, the solenoid valve connects the compressor and the condenser. The refrigerant flowing out of the compressor passes through the condenser, the drying and filtering device, the throttling device, and the drying and filtering device before flowing to the evaporator. When the refrigeration system is in defrost mode, the solenoid valve connects the compressor to the evaporator. The refrigerant flowing from the compressor passes through the evaporator, the drying and filtering device, the throttling device, and the drying and filtering device before flowing to the condenser.

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