Refrigerator

Abstract

The embodiment of the invention belongs to the technical field of household appliances, and provides a refrigerator which comprises a water receiving device arranged at the bottom of an evaporator in a spaced mode and an expansion device arranged at the bottom of the water receiving device and abutting against the water receiving device. The compressor is respectively connected with the condenser and the evaporator, electromagnetic valves are arranged between the compressor and the condenser and between the compressor and the evaporator, and the expansion device is communicated with the evaporator. When the refrigerating system is in a refrigerating mode, the electromagnetic valve enables the compressor to be communicated with the condenser, a refrigerant flowing out of the compressor flows to the evaporator through the condenser, and the refrigerant flowing out of the evaporator enables the expansion device to be in an unexpanded state. When the refrigerating system is in a defrosting mode, the electromagnetic valve enables the compressor to be communicated with the evaporator, a refrigerant flowing out of the compressor flows to the evaporator, the refrigerant flowing out of the evaporator enables the expansion device to be in an expansion state, the water receiving device is pushed to be close to the bottom of the evaporator, and frost falling on the water receiving device is melted through heat at the bottom of the evaporator; and the energy consumption of the refrigerator is reduced in the defrosting process.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of household appliances. More specifically, it relates to a refrigerator. Background Art

[0002] When the refrigerator is refrigerating, moisture in the circulating air will frost on the evaporator and the connecting pipeline. In order to improve the refrigeration efficiency of the refrigerator, it is necessary to defrost the evaporator. During the defrosting process, heat convects and circulates upward, and as the ice and frost melt, the effect of gravity will cause them to move downward and fall to the bottom of the evaporator, resulting in incomplete melting of the ice and frost at the bottom of the evaporator.

[0003] Currently, a heating wire can be set at the bottom of the evaporator to melt the ice at the bottom of the evaporator through the heat of the heating wire. However, using the heating wire for defrosting results in high power consumption of the refrigerator. Summary of the Invention

[0004] The embodiments of the present application provide a refrigerator that can be used to melt the ice and frost that fall to the bottom of the evaporator and reduce the energy consumption of the refrigerator.

[0005] In a first aspect, the embodiments of the present application provide a refrigerator, which includes:

[0006] A box body;

[0007] A refrigeration system arranged in the box body, including: a compressor, a condenser, an evaporator, a water receiving device arranged at intervals at the bottom of the evaporator, and an expansion device arranged at the bottom of the water receiving device and in contact therewith; the compressor is respectively connected to the condenser and the evaporator, and a solenoid valve is arranged between the compressor and the condenser and the evaporator; the expansion device is communicated with the evaporator;

[0008] Wherein, when the refrigeration system is in the refrigeration mode, the solenoid valve makes the compressor communicate with the condenser, and the refrigerant flowing out of the compressor flows through the condenser to the evaporator, and the refrigerant flowing out of the evaporator makes the expansion device in an unexpanded state;

[0009] When the refrigeration system is in the defrosting mode, the solenoid valve makes the compressor communicate with the evaporator, the refrigerant flowing out of the compressor flows to the evaporator, and the refrigerant flowing out of the evaporator makes the expansion device in an expanded state, pushing the water receiving device close to the bottom of the evaporator.

[0010] In this embodiment, the refrigerator includes a cabinet and a refrigeration system disposed within the cabinet. The refrigeration system includes a compressor, a condenser, an evaporator, a water receiving device disposed at intervals at the bottom of the evaporator, and an expansion device disposed at the bottom of the water receiving device and in abutment therewith. The compressor is respectively connected to the condenser and the evaporator. An electromagnetic valve is provided between the compressor and the condenser and the evaporator. The expansion device is in communication with the evaporator. When the refrigeration system is in the refrigeration mode, the electromagnetic valve causes the compressor to communicate with the condenser, and the refrigerant flowing out of the compressor flows through the condenser to the evaporator. The refrigerant flowing out of the evaporator causes the expansion device to be in an unexpanded state. When the refrigeration system is in the defrosting mode, the electromagnetic valve causes the compressor to communicate with the evaporator, and the refrigerant flowing out of the compressor flows to the evaporator. The refrigerant flowing out of the evaporator causes the expansion device to be in an expanded state, pushing the water receiving device close to the bottom of the evaporator, and the heat at the bottom of the evaporator can be used to melt the frost falling on the water receiving device, reducing the energy consumption of the refrigerator during the defrosting process.

[0011] In some embodiments of the present application, the expansion device includes a first airbag and a second airbag. The first airbag and the second airbag are respectively disposed at two ends of the bottom of the water receiving device and are in abutment with the water receiving device.

[0012] In this embodiment, two airbags can be provided and disposed on both sides of the bottom of the water receiving device, which can improve the stability of the airbag in supporting the water receiving device.

[0013] In some embodiments of the present application, the expansion device further includes a first connecting pipe and a second connecting pipe;

[0014] Two ends of the first connecting pipe are respectively connected to the first airbag and the outlet of the evaporator. The refrigerant flowing out of the evaporator flows through the first connecting pipe to the first airbag, causing the first airbag to be in an expanded state or an unexpanded state;

[0015] The first airbag is in communication with the second airbag and the outlet of the evaporator respectively. One end of the second airbag is in communication with the first airbag through the second connecting pipe.

[0016] In this embodiment, a connecting pipe can be provided between the first airbag and the second airbag, so that the refrigerant flowing out of the evaporator flows through the first airbag to the second airbag, causing it to expand or not expand.

[0017] In some embodiments of the present application, the expansion device further includes a third connecting pipe and a fourth connecting pipe;

[0018] Two ends of the third connecting pipe are respectively in communication with the first airbag and the outlet of the evaporator. Two ends of the fourth connecting pipe are respectively in communication with the second airbag and the outlet of the evaporator.

[0019] In this embodiment, the first airbag and the second airbag can be respectively connected to the outlet of the evaporator through connecting pipes, so that the states of the first airbag and the second airbag are close to the same.

[0020] In some embodiments of the present application, the refrigeration system further includes a support plate, and the shapes of the first airbag and the second airbag are ellipsoidal;

[0021] The first airbag and the second airbag are arranged between the water receiving device and the support plate, and the first airbag is respectively abutted against the water receiving device and the support plate, and the second airbag is respectively abutted against the water receiving device and the support plate.

[0022] In this embodiment, the shapes of the first airbag and the second airbag can be ellipsoidal, and the two airbags are supported by the support plate so that the two airbags are respectively abutted against the water receiving device, which is convenient for pushing the water receiving device close to the bottom of the evaporator in the defrosting mode.

[0023] In some embodiments of the present application, the included angle between the transverse axis direction of the first airbag and the support plate is less than 45°, and the included angle between the transverse axis direction of the second airbag and the support plate is less than 45°.

[0024] In this embodiment, an included angle less than 45° can make the contact areas of the two airbags with the water receiving device larger, further improving the stability.

[0025] In some embodiments of the present application, when the expansion device is in an unexpanded state, the distance between the water receiving device and the bottom of the evaporator is greater than 40 mm.

[0026] In this embodiment, a distance greater than 40 mm makes the space at the bottom of the evaporator larger during refrigeration of the refrigerator, which is beneficial to air circulation.

[0027] In some embodiments of the present application, the refrigerator further includes a control component, and the control component is electrically connected to the solenoid valve;

[0028] The solenoid valve includes an exhaust port, an intake port, a first outlet and a second outlet; wherein, the first outlet is communicated with the condenser through a first pipeline, and the second outlet is communicated with the evaporator through a second pipeline;

[0029] The control component is configured to:

[0030] When it is determined to turn on the refrigeration mode, control the solenoid valve to open the first outlet and close the second outlet, and the refrigerant flowing out of the compressor enters the condenser through the exhaust port and the first outlet;

[0031] When it is determined to activate the defrosting mode, control the solenoid valve to open the second outlet and close the first outlet, and the refrigerant flowing out of the compressor enters the evaporator through the exhaust port and the second outlet.

[0032] In this embodiment, the solenoid valve can be controlled by a control component to realize the reverse flow of the refrigerant during the defrosting mode.

[0033] In some embodiments of the present application, a freezer compartment is provided in the cabinet, and the evaporator is configured to provide cooling capacity for the freezer compartment.

[0034] In this embodiment, the evaporator can be the evaporator of the freezer compartment, and defrosting can be achieved for this evaporator during reverse-flow defrosting.

[0035] In a second aspect, the present application provides a refrigerator, which includes:

[0036] A cabinet;

[0037] A refrigeration system disposed in the cabinet, configured to provide cooling capacity when in the refrigeration mode and to defrost the evaporator when in the defrosting mode;

[0038] A water receiving device disposed at intervals at the bottom of the evaporator for receiving the ice and frost falling from the evaporator;

[0039] An expansion device disposed at the bottom of the water receiving device and abutted against the water receiving device; the expansion device is connected to the evaporator and is configured to: when the refrigeration system is in the defrosting mode, push the water receiving device close to the bottom of the evaporator.

[0040] In this embodiment, the refrigerator includes a cabinet, a refrigeration system, a water receiving device, and an expansion device. Among them, the refrigeration system is disposed in the cabinet, configured to provide cooling capacity when in the refrigeration mode and to defrost the evaporator when in the defrosting mode. The water receiving device is disposed at intervals at the bottom of the evaporator for receiving the ice and frost falling from the evaporator. The expansion device is disposed at the bottom of the water receiving device and abutted against the water receiving device. The expansion device is connected to the evaporator and is configured to: when the refrigeration system is in the defrosting mode, push the water receiving device close to the bottom of the evaporator, use the heat at the bottom of the evaporator to melt the ice and frost falling on the water receiving device, and reduce the energy consumption of the refrigerator during the defrosting process. Description of the Drawings

[0041] To more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings required for the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0042] Figure 1 Schematic diagram of a refrigerator provided by an embodiment of the present application;

[0043] Figure 2 Schematic diagram of another refrigerator provided by an embodiment of the present application;

[0044] Figure 3 Schematic diagram of the structure of a refrigerator provided by an embodiment of the present application;

[0045] Figure 4 Schematic diagram of the structure of a refrigeration system 103 provided by an embodiment of the present application;

[0046] Figure 5 Schematic diagram of the flow direction of the refrigerant when the refrigeration system 103 in the example of the present application is in the refrigeration mode;

[0047] Figure 6 Schematic diagram of the flow direction of the refrigerant when the refrigeration system 103 in the example of the present application is in the defrosting mode;

[0048] Figure 7 Schematic diagram of the structure of an evaporator 33 provided by an example of an embodiment of the present application;

[0049] Figure 8 Schematic diagram of the structure of an evaporator 33 provided by an example of an embodiment of the present application;

[0050] Figure 9 Schematic diagram of the structure of another evaporator 33 provided by an example of an embodiment of the present application;

[0051] Figure 10 Schematic diagram of the structure of another evaporator 33 provided by an example of an embodiment of the present application;

[0052] Figure 11 Schematic diagram of the flow chart of a control method for a refrigerator provided by an embodiment of the present application.

[0053] Explanation of the reference numerals:

[0054] 10 - Refrigerator; 11 - Freezer compartment;

[0055] 101 - Cabinet; 102 - Door body;

[0056] 103 - Refrigeration system; 104 - Control component;

[0057] 31 - Compressor; 32 - Condenser;

[0058] 33 - Evaporator; 34 - Solenoid valve;

[0059] 35 - Water receiving device; 36 - Expansion device;

[0060] 361 - First airbag; 362 - Second airbag;

[0061] 37 - Support plate. Detailed implementation manners

[0062] To make the objectives, implementation manners and advantages of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application with reference to the accompanying drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part rather than all of the embodiments of this application.

[0063] It should be noted that the brief description of the terms in this application is only for facilitating the understanding of the subsequent described implementation manners, rather than intending to limit the implementation manners of this application. Unless otherwise specified, these terms should be understood according to their ordinary and common meanings.

[0064] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclusively include. For example, a product or device including a series of components does not necessarily have to be limited to those components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0065] When the refrigerator is refrigerating, the moisture in the circulating air will frost on the evaporator and the connecting pipelines. To improve the refrigeration efficiency of the refrigerator, it is necessary to defrost the evaporator.

[0066] Exemplarily, defrosting can be carried out by the counter - current defrosting method, that is, the refrigerant flows counter - currently in each mechanism of the refrigeration system. The high - temperature and high - pressure gas flowing out of the compressor enters the evaporator, and the heat of the high - temperature and high - pressure gas is utilized to achieve defrosting of the evaporator.

[0067] During the defrosting process, the heat convects upward in a cycle, and as the ice and frost melt, the effect of gravity will cause them to move downward and fall to the bottom of the evaporator. There will be a problem that the ice and frost at the bottom of the evaporator cannot be completely melted.

[0068] Currently, a heating wire can be arranged at the bottom of the evaporator to melt the ice at the bottom of the evaporator through the heat of the heating wire. However, using the heating wire for defrosting results in a relatively high power consumption of the refrigerator.

[0069] Therefore, the present application provides a refrigerator. By arranging an airbag at the bottom of the water-receiving aluminum sheet at the bottom of the evaporator, and connecting the airbag to the outlet of the evaporator, when the refrigerator defrosts in a countercurrent manner, the high-pressure refrigerant (high-pressure gas) of the evaporator can be used to inflate the airbag and lift the water-receiving aluminum sheet, so that the water-receiving aluminum sheet is close to the bottom of the evaporator, thereby realizing the melting of the frost falling on the water-receiving aluminum sheet by the heat at the bottom of the evaporator.

[0070] The technical solution of the present application will be described in detail below with reference to specific embodiments. These specific embodiments may be combined with each other or exist independently. For the same or similar concepts or processes, they may not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0071] Figure 1 It is a schematic diagram of a refrigerator provided by an embodiment of the present application. Figure 2 It is a schematic diagram of another refrigerator provided by an embodiment of the present application. As Figure 1 and Figure 2 shown, the refrigerator 10 includes a box body 101, a door body 102, and a storage compartment arranged in the box body 101.

[0072] In a possible implementation manner, as Figure 1 shown, the storage compartment includes a refrigerating compartment and a freezing compartment 11, Figure 1 the refrigerating compartment is not shown in

[0073] In a possible implementation manner, as Figure 2 shown, the storage compartment includes a refrigerating compartment, a freezing compartment 11, and a variable-temperature compartment 13. Exemplarily, Figure 2 the upper compartments are the refrigerating compartment and the freezing compartment 11, and the lower compartment can be a variable-temperature compartment, Figure 1 the refrigerating compartment and the freezing compartment 11 are not shown in

[0074] It can be understood that Figure 1 and Figure 2 are only schematic diagrams of a refrigerator applicable to the present application, and it can also be a refrigerator with other structures. The present application does not limit this.

[0075] In a possible implementation manner, the refrigerator 10 further includes a refrigeration system 103 and a control component 104. Exemplarily, Figure 3 It is a schematic structural diagram of a refrigerator provided by an embodiment of the present application. As Figure 3 shown, the refrigeration system 103 includes a compressor 31, a condenser 32, and an evaporator 33.

[0076] Among them, the compressor 31 is configured to provide power for the refrigeration of the refrigerator 10.

[0077] The condenser 32 is configured to dissipate heat from the refrigerant coming from the compressor 31.

[0078] An evaporator 33, configured to provide cooling capacity for the storage chamber.

[0079] Wherein, a compressor 31 is respectively connected to a condenser 32 and an evaporator 33, and a solenoid valve 34 is provided between the compressor 31 and the condenser 32 and the evaporator 33. The solenoid valve can control the flow direction of the refrigerant flowing out of the compressor 31. For example, in the refrigeration mode, the refrigerant flowing out of the compressor 31 flows to the condenser 32, and in the defrosting mode, the refrigerant flowing out of the compressor 31 flows to the evaporator 33.

[0080] In a possible implementation, Figure 4 is a schematic structural diagram of a refrigeration system 103 provided by an embodiment of the present application, as Figure 4 shown. The solenoid valve 34 includes an exhaust port, an intake port, a first outlet and a second outlet. Among them, the first outlet is connected to the condenser 32 through a first pipeline, the second outlet is connected to the evaporator 33 through a second pipeline, the exhaust port of the solenoid valve 34 is connected to the inlet of the compressor 31, and the intake port of the solenoid valve 34 is connected to the outlet of the compressor 31.

[0081] A control component 104, configured to:

[0082] When it is determined to turn on the refrigeration mode, control the solenoid valve 34 to open the first outlet and close the second outlet. The refrigerant flowing out of the compressor 31 enters the condenser 32 through the exhaust port and the first outlet, then flows to the evaporator 33 through the condenser 32, and finally flows to the compressor 31 to complete the refrigeration cycle of the refrigerator. Exemplarily, Figure 5 is a schematic diagram of the flow direction of the refrigerant when the refrigeration system 103 of the present application example is in the refrigeration mode. It should be understood that closing the second outlet means closing the outlet of the compressor 31 flowing to the evaporator 33. The refrigerant flowing out of the evaporator 33 can enter the intake port through the second outlet and thus enter the compressor 31.

[0083] When it is determined to turn on the defrosting mode, control the solenoid valve 34 to open the second outlet and close the first outlet. The refrigerant flowing out of the compressor 31 enters the evaporator 33 through the exhaust port and the second outlet, then flows from the evaporator 33 to the condenser 32, and finally flows to the compressor 31. Among them, the evaporator 33 releases heat to melt the frost layer on the evaporator 33 to achieve the purpose of defrosting. Exemplarily, Figure 6 is a schematic diagram of the flow direction of the refrigerant when the refrigeration system 103 of the present application example is in the defrosting mode. It should be understood that closing the first outlet means closing the outlet of the compressor 31 flowing to the condenser 32. The refrigerant flowing out of the condenser 32 can enter the intake port through the first outlet and thus enter the compressor 31.

[0084] Specifically, a capillary tube (not shown in the figure) can be provided between the condenser 32 and the evaporator 33. InFigure 5 In this case, the refrigerant at low temperature and low pressure is sucked into the compressor 31, compressed into a refrigerant at high temperature and high pressure in the cylinder of the compressor 31, and then discharged into the condenser 32. The refrigerant gas at high temperature and high pressure dissipates heat through the condenser 32, and its temperature continuously drops, gradually being cooled into a saturated vapor at normal temperature and high pressure. Then, it undergoes throttling and pressure reduction through the capillary tube to become a wet vapor at normal temperature and low pressure. Subsequently, it starts to absorb heat and vaporize in the evaporator 33, not only reducing the temperature of the evaporator 33 and its surroundings, but also turning the refrigerant into a gas at low temperature and low pressure, and then passing through the compressor 31 again to complete the refrigeration cycle of the refrigerator.

[0085] In Figure 6 In this case, the refrigerant at low temperature and low pressure is sucked into the compressor 31, compressed into a refrigerant at high temperature and high pressure in the cylinder of the compressor 31, and then discharged into the evaporator 33. The refrigerant gas at high temperature and high pressure dissipates heat through the evaporator 33, and its temperature continuously drops, gradually being cooled into a saturated vapor at normal temperature and high pressure. Then, it undergoes throttling and pressure reduction through the capillary tube to become a wet vapor at normal temperature and low pressure. Subsequently, it starts to absorb heat and vaporize in the condenser 32, not only reducing the temperature of the condenser 32 and its surroundings, but also turning the refrigerant into a gas at low temperature and low pressure. Then, the gas at low temperature and low pressure returns to the compressor 31. Among them, the refrigerant at high temperature and high pressure can melt the frost condensed on the evaporator 33 by means of heat conduction in the evaporator 33 to achieve the purpose of defrosting.

[0086] Figure 7 FIG. Figure 7 As shown, the refrigeration system 103 further includes a water receiving device 35 and an expansion device 36.

[0087] Among them, the water receiving device 35 is disposed at intervals at the bottom of the evaporator 33, and the expansion device 36 is disposed at the bottom of the water receiving device 35 and is in abutting connection.

[0088] In a possible implementation manner, the expansion device 36 includes a first airbag 361 and a second airbag 362. The first airbag 361 and the second airbag 362 are respectively disposed on both sides of the bottom of the water receiving device 35 and are in abutting connection with the water receiving device 35. By providing an airbag at each end of the water receiving device 35 respectively, the stability of the airbag supporting the water receiving device 35 can be improved.

[0089] Exemplarily, as Figure 7 shown, when the refrigeration system 103 is in the refrigeration mode, the solenoid valve 34 enables the compressor 31 to communicate with the condenser 32. The refrigerant flowing out of the compressor 31 flows through the condenser 32 to the evaporator 33, and the refrigerant flowing out of the evaporator 33 causes the expansion device 36 to be in an unexpanded state.

[0090] That is to say, when the refrigeration system 103 is in the refrigeration mode, the refrigerant flowing out of the evaporator 33 is a low-temperature and low-pressure gas. Exemplarily, the pressure of the refrigerant is usually 0.06 Mpa (megapascal). Since the pressure of the refrigerant is low, the expansion device 36 is in an unexpanded state. The unexpanded state of the expansion device 36 can be referred to Figure 7 .

[0091] Exemplarily, as Figure 8 shown, when the refrigeration system 103 is in the defrosting mode, the solenoid valve 34 connects the compressor 31 and the evaporator 33. The refrigerant flowing out of the compressor 31 flows to the evaporator 33, and the refrigerant flowing out of the evaporator 33 makes the expansion device 36 in an expanded state.

[0092] That is to say, when the refrigeration system 103 is in the refrigeration mode, the refrigerant flowing out of the evaporator 33 is a normal-temperature and high-pressure gas. Exemplarily, the pressure of the refrigerant is usually 0.6 Mpa - 0.7 Mpa. Since the pressure of the refrigerant is higher than the pressure of the refrigerant flowing out of the evaporator 33 in the above refrigeration mode, the expansion device 36 is in an expanded state. The expanded state of the expansion device 36 can be referred to Figure 8 .

[0093] In a possible implementation manner, the water receiving device 35 can be a water receiving aluminum sheet. Exemplarily, the water receiving aluminum sheet can be folded in half to form an angle of 120 degrees, and the side where the angle is located is arranged at the bottom of the evaporator 33 to facilitate receiving the frost falling from the evaporator 33. Refer to Figure 7 and Figure 8 .

[0094] In this embodiment, when the refrigeration system is in the refrigeration mode, the solenoid valve connects the compressor and the condenser. The refrigerant flowing out of the compressor flows through the condenser to the evaporator, and the refrigerant flowing out of the evaporator makes the expansion device in an unexpanded state. When the refrigeration system is in the defrosting mode, the solenoid valve connects the compressor and the evaporator. The refrigerant flowing out of the compressor flows to the evaporator, and the refrigerant flowing out of the evaporator makes the expansion device in an expanded state, pushing the water receiving device close to the bottom of the evaporator, and the heat at the bottom of the evaporator can be used to melt the frost falling on the water receiving device, reducing the energy consumption of the refrigerator during the defrosting process.

[0095] In a possible implementation manner, as Figure 7 and Figure 8 shown, the expansion device 36 further includes a first connecting pipe and a second connecting pipe. Among them, both ends of the first connecting pipe are respectively connected to the first airbag 361 and the outlet of the evaporator 33. The refrigerant flowing out of the evaporator 33 flows through the first connecting pipe to the first airbag 361, making the state of the first airbag 361 in an expanded state or an unexpanded state.

[0096] Moreover, the first airbag 361 is respectively communicated with the second airbag 362 and the outlet of the evaporator 33. One end of the second airbag 362 is communicated with the first airbag 361 through a second connecting pipe, so that the refrigerant flowing out of the evaporator 33 flows through the first airbag 361 to the second airbag 362, making the state of the second airbag 362 be an inflated state or a non-inflated state.

[0097] In a possible implementation manner, Figure 9 is a schematic structural diagram of another evaporator 33 provided by an embodiment of the present application. As Figure 9 shown, the expansion device 36 further includes a third connecting pipe and a fourth connecting pipe.

[0098] Both ends of the third connecting pipe are respectively communicated with the first airbag 361 and the outlet of the evaporator 33. Both ends of the fourth connecting pipe are respectively communicated with the second airbag 362 and the outlet of the evaporator 33. That is to say, the outlet of the evaporator 33 is communicated with the first airbag 361 and the second airbag 362 respectively through two different connecting pipes, which can make the states of the first airbag 361 and the second airbag 362 be close to the same.

[0099] It should be noted that the so-called "close to the same" may mean that the first airbag 361 and the second airbag 362 are inflated or not inflated at the same time, or the time interval between the inflation of the first airbag 361 and the second airbag 362 is small, for example, less than 1 second, so that the first airbag 361 and the second airbag 362 push the water receiving device 35 from both ends of the water receiving device 35 to approach the bottom of the evaporator 33.

[0100] The inflated state of the expansion device 36 can be referred to Figure 9 , and the non-inflated state of the expansion device 36 can be referred to Figure 10 .

[0101] In a possible implementation manner, as Figures 7 to 9 shown, the refrigeration system 103 further includes a support plate 37. The shapes of the first airbag 361 and the second airbag 362 can be ellipsoidal. The first airbag 361 and the second airbag 362 are arranged between the water receiving device 35 and the support plate 37, and the first airbag 361 is respectively abutted against the water receiving device 35 and the support plate 37, and the second airbag 362 is respectively abutted against the water receiving device 35 and the support plate 37.

[0102] Exemplarily, the support plate 37 can be the housing at the bottom of the evaporator chamber where the evaporator 33 is located.

[0103] In this embodiment, the shapes of the first airbag 361 and the second airbag 362 can be ellipsoidal, and the two airbags are supported by the support plate 37, so that the two airbags are respectively abutted against the water receiving device 35, which is convenient for pushing the water receiving device 35 to approach the bottom of the evaporator 33 in the defrosting mode.

[0104] In a possible implementation, the included angle between the horizontal axis direction of the first airbag 361 and the support plate 37 is less than 45°, and the included angle between the horizontal axis direction of the second airbag and the support plate 37 is less than 45°, so that the contact areas of the first airbag 361 and the second airbag 362 with the water receiving device 35 are relatively large, improving the stability of the first airbag 361 and the second airbag 362 in supporting the water receiving device 35.

[0105] In a possible implementation, when the expansion device 36 is in an unexpanded state, that is, when the refrigeration system 103 is in the refrigeration mode, the distance between the water receiving device 35 and the bottom of the evaporator 33 is greater than 40 mm (millimeters) (for reference, see Figure 9 ). So that when refrigerating, the space at the bottom of the evaporator 33 is relatively large, and the air circulation is utilized.

[0106] In a possible implementation, the refrigerator 10 can be a multi-system refrigerator, that is, each compartment is refrigerated separately through different evaporators. Since the evaporator corresponding to the freezer compartment frosts more, the evaporator 33 can be the evaporator of the freezer compartment, configured to provide cold for the freezer compartment, and can defrost the evaporator during reverse defrosting.

[0107] Based on the above refrigerator, Figure 11 is a schematic flowchart of a control method for a refrigerator provided by an embodiment of the present application. This method can be executed by the control component 104 of the above refrigerator, as Figure 11 shown. This method includes the following steps.

[0108] S1101. When it is determined to turn on the refrigeration mode, control the solenoid valve to open the first outlet and close the second outlet.

[0109] S1102. When it is determined to turn on the defrosting mode, control the solenoid valve to open the second outlet and close the first outlet.

[0110] It can be understood that there is no sequence between S1101 and S1102.

[0111] Exemplarily, the control component 104 can determine whether to start the refrigeration mode according to the temperature of the storage compartment of the refrigerator and / or the ambient temperature of the environment where the refrigerator 10 is located, so as to refrigerate the storage compartment. The present application does not limit the judgment method for the control component 104 to start the refrigeration mode.

[0112] Exemplarily, the control component 104 can determine whether to enter the defrosting mode according to factors such as the running time of the evaporator, the frost thickness on the evaporator, or the specific running conditions of the refrigerator. The present application does not limit this.

[0113] In this embodiment, through the control component, the solenoid valve is controlled to realize the reverse flow of the refrigerant in the defrosting mode.

[0114] The present application also provides a computer-readable storage medium, which may include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs. Specifically, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a computer, they are used to implement the technical solutions shown in the above method embodiments.

[0115] The present application also provides a program product, which includes executable instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solutions shown in the above method embodiments are executed. The specific implementation manners and technical effects are similar and will not be elaborated here.

[0116] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0117] For the sake of convenience of explanation, the above description has been made in combination with specific implementation manners. However, the above exemplary discussion is not intended to be exhaustive or to limit the implementation manners to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above implementation manners are for better explaining the principles and practical applications, so that those skilled in the art can better use the implementation manners and various different variations of the implementation manners suitable for specific use considerations.

[0118] In the present application, "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0119] The descriptions such as first and second that appear in the embodiments of the present application are only for schematic and distinguishing the described objects, without an order, and do not represent a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application. For example, the first threshold and the second threshold are only used to distinguish different thresholds, rather than indicating differences in the magnitudes, priorities, or importance levels of these two thresholds.

[0120] In this application, terms such as "exemplary", "in some embodiments", "in other embodiments", etc. are used to represent examples, illustrations, or explanations. 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 use of the term "exemplary" is intended to present concepts in a specific manner.

[0121] In this application, the words "of", "corresponding", "corresponding", and "associated" can sometimes be used interchangeably. It should be noted that when the differences are not emphasized, their intended meanings are the same. In the embodiments of this application, communication and transmission can sometimes be used interchangeably. It should be noted that when the differences are not emphasized, their intended meanings are the same. For example, transmission can include sending and / or receiving, and can be a noun or a verb.

[0122] In this application, "equal to" can be used in combination with "less than" or "greater than", but not simultaneously with both "less than" and "greater than". When "equal to" is used in combination with "less than", the technical solution adopted for "less than" applies. When "equal to" is used in combination with "greater than", the technical solution adopted for "greater than" applies.

Claims

1. A refrigerator, characterized in that, the refrigerator comprises: a cabinet; a refrigeration system disposed in the cabinet, including: a compressor, a condenser, an evaporator, a water receiving device disposed at intervals at the bottom of the evaporator, and an expansion device disposed at the bottom of the water receiving device and in abutment; the compressor is respectively connected to the condenser and the evaporator, and a solenoid valve is disposed between the compressor and the condenser and the evaporator; the expansion device is communicated with the evaporator; wherein, when the refrigeration system is in the refrigeration mode, the solenoid valve enables the compressor to communicate with the condenser, the refrigerant flowing out of the compressor flows through the condenser to the evaporator, and the refrigerant flowing out of the evaporator enables the expansion device to be in an unexpanded state; when the refrigeration system is in the defrosting mode, the solenoid valve enables the compressor to communicate with the evaporator, the refrigerant flowing out of the compressor flows to the evaporator, and the refrigerant flowing out of the evaporator enables the expansion device to be in an expanded state, pushing the water receiving device close to the bottom of the evaporator.

2. The refrigerator according to claim 1, characterized in that, the expansion device includes a first airbag and a second airbag, the first airbag and the second airbag are respectively disposed at two ends of the bottom of the water receiving device and are in abutment with the water receiving device.

3. The refrigerator according to claim 2, characterized in that, the expansion device further includes a first connecting pipe and a second connecting pipe; two ends of the first connecting pipe are respectively connected to the first airbag and the outlet of the evaporator, and the refrigerant flowing out of the evaporator flows through the first connecting pipe to the first airbag, so that the state of the first airbag is an expanded state or an unexpanded state; the first airbag is respectively communicated with the second airbag and the outlet of the evaporator, and one end of the second airbag is communicated with the first airbag through the second connecting pipe.

4. The refrigerator according to claim 2, characterized in that, the expansion device further includes a third connecting pipe and a fourth connecting pipe; two ends of the third connecting pipe are respectively communicated with the first airbag and the outlet of the evaporator, and two ends of the fourth connecting pipe are respectively communicated with the second airbag and the outlet of the evaporator.

5. The refrigerator according to claim 3 or 4, characterized in that, the refrigeration system further includes a support plate, and the shapes of the first airbag and the second airbag are ellipsoidal; the first airbag and the second airbag are disposed between the water receiving device and the support plate, and the first airbag is respectively in abutment with the water receiving device and the support plate, and the second airbag is respectively in abutment with the water receiving device and the support plate.

6. The refrigerator according to claim 5, characterized in that, the included angle between the transverse axis direction of the first airbag and the support plate is less than 45°, and the included angle between the transverse axis direction of the second airbag and the support plate is less than 45°.

7. The refrigerator according to claim 1, characterized in that, when the expansion device is in an unexpanded state, the distance between the water receiving device and the bottom of the evaporator is greater than 40 millimeters.

8. The refrigerator according to any one of claims 1-7, wherein, the refrigerator further includes a control component, and the control component is electrically connected to the solenoid valve; the solenoid valve includes an exhaust port, an intake port, a first outlet, and a second outlet; wherein, the first outlet is communicated with the condenser through a first pipeline, and the second outlet is communicated with the evaporator through a second pipeline; the control component is configured to: when it is determined to turn on the refrigeration mode, control the solenoid valve to open the first outlet and close the second outlet, and the refrigerant flowing out of the compressor enters the condenser through the exhaust port and the first outlet; when it is determined to turn on the defrosting mode, control the solenoid valve to open the second outlet and close the first outlet, and the refrigerant flowing out of the compressor enters the evaporator through the exhaust port and the second outlet.

9. The refrigerator according to claim 1, wherein, a freezer compartment is provided in the cabinet, and the evaporator is configured to provide cooling capacity for the freezer compartment.

10. A refrigerator, wherein, the refrigerator includes: a cabinet; a refrigeration system provided in the cabinet, the refrigeration system is configured to provide cooling capacity when in the refrigeration mode, and is configured to defrost the evaporator when in the defrosting mode; a water receiving device spacedly provided at the bottom of the evaporator for receiving the frost falling from the evaporator; an expansion device provided at the bottom of the water receiving device and abutted against the water receiving device; the expansion device is communicated with the evaporator, and the expansion device is configured to: when the refrigeration system is in the defrosting mode, push the water receiving device close to the bottom of the evaporator.

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