Refrigeration device

Abstract

A refrigeration device, comprising: a box body, comprising a device chamber and a storage chamber; and a refrigeration system disposed within the device chamber, the refrigeration system comprising a compressor, a first heat exchanger and a second heat exchanger, which are connected in sequence by means of a refrigeration line. The refrigerating system further comprises a defrosting line, a defrosting portion and a first water receiving tray, two ends of the defrosting line being connected to an output end of the compressor and an input end of the second heat exchanger, respectively, and the defrosting portion being disposed on the defrosting line, and connected to the first water receiving tray.

Description

Refrigeration equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent applications filed on May 30, 2024, with application number 2024106930826, 2024212198239, and 2024212172879, all of which are incorporated herein by reference in their entirety for all purposes. Technical Field

[0003] This invention belongs to the field of electrical equipment technology, and particularly relates to a refrigeration device. Background Technology

[0004] Refrigerators are essential cooling devices in daily life. A refrigerator typically consists of a cabinet and a door. The cabinet forms a storage compartment to hold items that need to be refrigerated, and the storage compartment is opened and closed through the door to facilitate users' access to items.

[0005] Refrigerators lower the internal temperature by transferring internal heat to the outside. In traditional frost-free refrigerators, the evaporator is usually located in the equipment chamber, which is situated at the bottom of the refrigerator. When the evaporator and drip tray defrost, the temperature inside the equipment chamber rises. Through convection and heat conduction, this can easily cause the temperature in the storage chamber to rise again, affecting the cooling effect of the storage chamber and the quality of the items stored inside.

[0006] Summary of the Invention

[0007] Therefore, it is necessary to provide a refrigeration device to solve the problem that the temperature rise in the device chamber during the defrosting process causes the temperature in the storage chamber to rise again, affecting the storage effect of the storage chamber.

[0008] According to one aspect, a refrigeration device is proposed, comprising:

[0009] The enclosure includes:

[0010] Storage chamber; and

[0011] The equipment chamber is located on one side of the storage chamber; a refrigeration chamber is also provided inside the equipment chamber, and a connecting passage is provided between the refrigeration chamber and the storage chamber;

[0012] Refrigeration system, including:

[0013] The compressor is disposed within the equipment chamber;

[0014] A first heat exchanger is disposed within the equipment chamber;

[0015] The second heat exchanger is installed in the refrigeration room, and the compressor, the first heat exchanger and the second heat exchanger are connected in sequence through refrigeration pipes;

[0016] A defrosting pipeline, the two ends of which are respectively connected to the output end of the compressor and the input end of the second heat exchanger;

[0017] A first water receiving tray is disposed below the second heat exchanger; and

[0018] A defrosting section, wherein the defrosting section is disposed on the defrosting pipe and is connected to the first water receiving tray; and

[0019] A controller, electrically connected to the compressor, is configured to: under the refrigeration program, when the preset defrosting conditions are met, return the refrigerant output from the compressor to the compressor after passing through the defrosting pipeline, the defrosting section, and the second heat exchanger, so as to transfer the heat of the refrigerant in the defrosting section to the first water receiving pan.

[0020] The refrigeration system in the above-mentioned refrigeration equipment includes a refrigeration process and a defrosting process. The controller monitors the temperature in the refrigeration chamber and the storage chamber in real time. When the preset defrosting conditions are met, the controller controls the defrosting pipeline to be connected to the compressor. The high-temperature refrigerant discharged by the compressor first preheats the first water tray through the defrosting pipeline, and then enters the second heat exchanger to defrost and melt the frost on the surface of the evaporator, ensuring that the defrosting water droplets fall into the water tray and are discharged smoothly without being frozen.

[0021] On the other hand, a refrigeration device is also proposed, comprising:

[0022] The enclosure includes:

[0023] Storage chamber;

[0024] The equipment chamber is located on one side of the storage chamber; a refrigeration chamber is also provided inside the equipment chamber, and a connecting passage is provided between the refrigeration chamber and the storage chamber;

[0025] An air valve assembly is disposed within the communicating channel;

[0026] Refrigeration system, including:

[0027] Refrigeration circuit, including;

[0028] The compressor is disposed within the equipment chamber;

[0029] A first heat exchanger is disposed within the equipment chamber;

[0030] A second heat exchanger is disposed within the refrigeration chamber, and the compressor, the first heat exchanger, and the second heat exchanger are sequentially connected via refrigeration piping;

[0031] The defrosting circuit includes:

[0032] The defrosting pipeline is connected in parallel with the first heat exchanger; and

[0033] A defrosting section is provided on the defrosting pipe, and the defrosting section is connected to the first water receiving tray; and

[0034] The controller is electrically connected to the compressor and is configured to: when preset defrosting conditions are met, close the air valve assembly and start the defrosting program so that the heat of the refrigerant in the defrosting section is transferred to the first water receiving pan to defrost the first water receiving pan.

[0035] On the other hand, it is also necessary to provide a refrigeration device, including:

[0036] The enclosure includes:

[0037] Storage chamber; and

[0038] The equipment chamber is located on one side of the storage chamber; a refrigeration chamber is also provided inside the equipment chamber, and a connecting passage is provided between the refrigeration chamber and the storage chamber;

[0039] An air valve assembly is disposed within the connecting channel; the air valve assembly is used to control the opening and closing of the connecting channel;

[0040] Refrigeration system, including:

[0041] The compressor is disposed within the equipment chamber;

[0042] A first heat exchanger is disposed within the equipment chamber;

[0043] The second heat exchanger is installed in the refrigeration room, and the compressor, the first heat exchanger and the second heat exchanger are connected in sequence through refrigeration pipes;

[0044] A defrosting pipeline, the two ends of which are respectively connected to the output end of the compressor and the input end of the second heat exchanger;

[0045] A first water receiving tray is disposed below the second heat exchanger; and

[0046] A defrosting section is provided on the defrosting pipe and is connected to the first water receiving tray.

[0047] On the other hand, it is also necessary to provide a refrigeration device, including:

[0048] The enclosure includes:

[0049] Storage chamber; and

[0050] Equipment chamber, the equipment chamber being located on one side of the storage chamber; and

[0051] Refrigeration system, including:

[0052] The compressor is disposed within the equipment chamber;

[0053] A first heat exchanger is disposed within the equipment chamber;

[0054] The second heat exchanger is disposed in the equipment chamber, and the compressor, the first heat exchanger and the second heat exchanger are connected in sequence through refrigeration pipelines;

[0055] A defrosting pipeline, the two ends of which are respectively connected to the output end of the compressor and the input end of the second heat exchanger;

[0056] A first water receiving tray is disposed below the second heat exchanger; and

[0057] A defrosting section is provided on the defrosting pipe and is connected to the first water receiving tray.

[0058] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 is a perspective view of a refrigeration device according to some embodiments;

[0061] Figure 2 is a perspective view of the refrigeration equipment shown in Figure 1 after the door has been removed;

[0062] Figure 3 is a schematic diagram of the working principle of the refrigeration process of a refrigeration device according to some embodiments;

[0063] Figure 4 is a schematic diagram of the defrosting procedure of a refrigeration device according to some embodiments;

[0064] Figure 5 is a schematic diagram of a communication channel according to some embodiments;

[0065] Figure 6 is an exploded exploded diagram of Figure 5;

[0066] Figure 7 is a perspective view of the device chamber according to some embodiments;

[0067] Figure 8 is a perspective view of a refrigeration chamber according to some embodiments;

[0068] Figure 9 is a perspective view of a refrigeration system according to some embodiments;

[0069] Figure 10 is an exploded exploded view of Figure 9;

[0070] Figure 11 is a perspective view of a support base according to some embodiments;

[0071] Figure 12 is a perspective view of a second heat exchanger according to some embodiments;

[0072] Figure 13 is a perspective view of a first water receiving tray and a second water receiving tray according to some embodiments;

[0073] Figure 14 is an exploded view of a damper assembly according to some embodiments;

[0074] Figure 15 is a perspective view of the damper assembly shown in Figure 14 in the open state;

[0075] Figure 16 is a perspective view of the damper assembly shown in Figure 14 in the closed state;

[0076] Figure 17 is a flowchart of the defrosting procedure of a refrigeration device according to some embodiments;

[0077] Figure 18 is a flowchart of the refrigeration process of a refrigeration device according to some embodiments;

[0078] Figure 19 is a schematic diagram of the refrigeration process with a damper assembly according to some embodiments;

[0079] Figure 20 is a schematic diagram of the defrosting process with an air valve assembly according to some embodiments;

[0080] Figure 21 is a schematic diagram of a defrosting procedure with an air valve assembly according to some embodiments;

[0081] Figure 22 is a schematic diagram of a refrigeration process with a damper assembly according to some embodiments. Detailed Implementation

[0082] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0083] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0084] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0085] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0086] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0087] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0088] Referring to Figures 1 and 2, a refrigeration device is proposed according to some embodiments, including a housing 100 and a refrigeration system.

[0089] In some embodiments, the housing 100 includes a device chamber 110. Referring to Figures 3 and 4, the device chamber 110 is used to install various components required for the operation of the refrigeration system.

[0090] In some embodiments, the housing 100 includes a storage chamber 120. An equipment chamber 110 is located to one side of the storage chamber 120. In this embodiment, the equipment chamber 110 is positioned above the storage chamber 120, which helps to increase the effective volume of the storage chamber 120 and store more items. Furthermore, since the temperature inside the equipment chamber 110 is higher than the temperature inside the storage chamber 120, and the low-temperature airflow moves downwards, the position of the equipment chamber 110 above the storage chamber 120 helps to reduce heat exchange between the equipment chamber 110 and the storage chamber 120, achieving efficient cooling.

[0091] In some embodiments, the refrigeration system includes a compressor 200. The compressor 200 is disposed within the device chamber 110.

[0092] In some embodiments, the refrigeration system includes a first heat exchanger 300. The first heat exchanger 300 is disposed within the equipment chamber 110. Specifically, the first heat exchanger 300 may be a condenser connected to the output of the compressor 200.

[0093] In some embodiments, the refrigeration system includes a second heat exchanger 400. The second heat exchanger 400 acts as an evaporator during refrigeration operation. The compressor 200, the first heat exchanger 300, and the second heat exchanger 400 are connected in sequence via refrigeration piping 10.

[0094] In some embodiments, the refrigeration system includes a dryer filter 50. The dryer filter 50 is disposed between the first heat exchanger 300 and the second heat exchanger 400.

[0095] In some embodiments, the refrigeration system includes a throttling device 60. The throttling device 60 is connected to a dryer filter 50. The output of the first heat exchanger 300 is connected to the second heat exchanger 400 after passing through the dryer filter 50 and the throttling device 60.

[0096] In some embodiments, the refrigeration system includes a gas-liquid separator 70. The input end of the gas-liquid separator 70 is connected to the output end of the second heat exchanger 400, and the output end of the gas-liquid separator 70 is connected to the compressor 200.

[0097] Referring to Figure 3, during the refrigeration process, the high-temperature, high-pressure refrigerant output from the compressor 200 is compressed by the condenser to form a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve causes the high-temperature, high-pressure liquid refrigerant formed in the condenser to expand into a low-pressure liquid refrigerant. The second heat exchanger 400 evaporates the refrigerant that has expanded in the expansion valve and returns the refrigerant gas, which is in a low-temperature, low-pressure state, to the compressor 200. The second heat exchanger 400 cools the items inside the housing 100 by utilizing the latent heat of refrigerant evaporation.

[0098] In some embodiments, the refrigeration system can implement a defrosting process in addition to the refrigeration process.

[0099] Referring to Figures 3 and 4, in some embodiments, the refrigeration system further includes a defrost line 20. The two ends of the defrost line 20 are connected to the output of the compressor 200 and the input of the second heat exchanger 400, respectively.

[0100] In some embodiments, the refrigeration system further includes a defrosting unit 910. The defrosting unit 910 is disposed on the defrosting pipe 20.

[0101] In some embodiments, the refrigeration system further includes a first drip tray 900. The first drip tray 900 is disposed below the second heat exchanger 400. A defrosting unit 910 is connected to the first drip tray 900.

[0102] The defrosting process is achieved through defrosting pipe 20 and defrosting unit 910. The switching between the defrosting and cooling processes is achieved in the following manner:

[0103] In some embodiments, a first switching section is provided between the first heat exchanger 300 and the compressor 200, and a second switching section is provided on the defrosting pipeline 20. During the cooling process, the first switching section is in the connected state and the second switching section is in the disconnected state; during the defrosting process, the first switching section is in the disconnected state and the second switching section is in the connected state.

[0104] Referring to Figure 3, in some embodiments, the first and second switching units can be integrated into a three-way solenoid valve 30. The defrost line 20 is connected to the refrigeration line 10 via the solenoid valve 30. During the refrigeration cycle, the solenoid valve 30 opens the passage between the compressor 200 and the first heat exchanger 300. Referring to Figure 4, during the defrost cycle, the solenoid valve 30 opens the passage between the compressor 200 and the defrost line 20.

[0105] During the defrosting process, the high-temperature, high-pressure refrigerant output from the compressor 200 is introduced into the defrosting line 20, where it releases heat in the defrosting section 910 to defrost the first drip tray 900. During defrosting, the hot air inside the compressor 20 first transfers heat to the first drip tray 900 through the defrosting line 20, causing the temperature of the first drip tray 900 to rise rapidly, ensuring smooth flow of defrost water without freezing.

[0106] The refrigerant output from the defrosting unit 910 passes through the interior of the second heat exchanger 400, where its high-temperature heat can directly and efficiently melt the ice and frost attached to the outside. The entire defrosting process is conducted without the participation of electrical components, making it safe, energy-saving, and free from the risk of electric leakage.

[0107] Referring to Figures 3 and 7, a cooling chamber 160 is also provided within the equipment chamber 110. An air supply component 500 is also provided within the cooling chamber 160. During defrosting, as the temperature inside the cooling chamber 160 rises, the air supply component 500 is shut off to prevent heat transfer to the storage chamber 120. That is, in the cooling process, forced convection by opening the air supply component 500 improves heat exchange (e.g., cooling) efficiency. In the defrosting process, natural convection by closing the air supply component 500 reduces heat exchange. In some embodiments, the air supply component 500 is a fan.

[0108] Referring to Figure 3, convection is achieved between the equipment chamber 110 and the storage chamber 120 through two connecting channels 130. During the defrosting process, the second heat exchanger 400 defrosts, and the high-temperature gas naturally rises in the equipment chamber 110, while the low-temperature air in the storage chamber 120 naturally sinks, which helps to reduce heat exchange and avoid temperature changes.

[0109] Before the defrosting process, a cooling process is performed first to reduce the temperature of the storage chamber 120 to the lowest point within the fluctuation range. This can effectively shift the temperature rise curve of the equipment chamber 110 caused by high-temperature defrosting downward.

[0110] After the defrosting process is completed, the cooling process is started, while the air supply unit 500 remains closed. When the temperature of the cooling chamber 160 is lower than the temperature of the storage chamber 120, the air supply unit 500 is then turned on to prevent the temperature of the storage chamber 120 from rising again due to high-temperature defrosting.

[0111] Referring to FIGS. 3 and 4, in order to control the mutual switching between the refrigeration process and the defrosting process, in some embodiments, the refrigeration device further includes a controller 80. The controller 80 is electrically connected to the compressor 200 and the solenoid valve 30. The controller 80 is configured such that in the refrigeration program, when the preset defrosting condition is satisfied, the refrigerant output from the compressor 200 passes through the defrosting pipeline 20, the defrosting unit 910, and the second heat exchanger 400 and then returns to the compressor 200, so that the heat of the refrigerant in the defrosting unit 910 is transferred to the first water receiving tray 900 to perform defrosting treatment on the first water receiving tray 900.

[0112] Specifically, the controller 80 controls the solenoid valve 30 to switch between the refrigeration pipeline 10 and the defrosting pipeline 20. In the refrigeration program, the solenoid valve 30 opens the passage between the compressor 200 and the first heat exchanger 300; in the defrosting program, the solenoid valve 30 opens the passage between the compressor 200 and the defrosting pipeline 20.

[0113] A first temperature detection component is provided in the first water receiving tray 900. The first temperature detection component is communicatively connected to the controller 80, and the first temperature detection component is used to detect the temperature T in the first water receiving tray 900.

[0114] Referring to FIGS. 17 and 18, the controller 80 is configured to: determine whether the defrosting condition is reached (step S101). If the defrosting condition is not reached, the original shutdown state or the refrigeration program state is maintained (step S102). In some embodiments, the defrosting condition includes determining the continuous operation time of the refrigeration program. When the operation time of the refrigeration program reaches the preset operation cycle, the defrosting program is started.

[0115] In other embodiments, the defrosting condition includes determining the detected temperature of the first temperature detection component. When the detected temperature of the first temperature detection component is lower than the preset temperature T1, the defrosting program is started.

[0116] In some embodiments, the operation cycle of the refrigeration program can be preset. That is, every n hours, the controller 80 starts the defrosting program once. n can be, for example, 8, 12, or 24, etc.

[0117] In other embodiments, the operation cycle of other working components can also be used as the start condition of the defrosting program. For example, the working cycle of the compressor 200. Every n hours the compressor 200 works, the defrosting program is started once.

[0118] In some embodiments, the defrosting condition can also be determined by the detected temperature of the first temperature detection component. When the detected temperature of the first temperature detection component is lower than the preset temperature T1, the defrosting program is started. The preset temperature T1 is also preset by the program. For example, when the detected temperature T of the first detection component < T1, the defrosting condition is started. The defrosting condition can be one of the above two conditions or both can be satisfied.

[0119] In some embodiments, before the defrosting process is initiated, it is first determined whether the cooling program is in progress (step S103). If the cooling program is off, the compressor and air supply are turned on, and the cooling program is started (step S104). If the cooling system is off, the temperature of the storage chamber 120 is already high, and the additional high temperature defrosting will inevitably cause the temperature of the storage chamber 120 to rise even higher. To avoid the above problems, a second temperature detection device is provided in the storage chamber 120. The second temperature detection device is signal-connected to the controller 80 and is used to detect the temperature t inside the storage chamber 120.

[0120] In some embodiments, before starting the defrosting program, the controller 80 determines the detection temperature of the second temperature sensor (step S105). When the detection temperature of the second temperature sensor is lower than the preset temperature t1, the defrosting program is started (step S106). That is, before starting the defrosting program, the refrigeration process is ensured to be in the on state, so that the temperature of the storage chamber 120 is cooled down to the lowest point within the fluctuation range, which can effectively shift the temperature rise curve of the storage chamber 120 caused by high-temperature defrosting downward.

[0121] In some embodiments, during the defrosting process, the first temperature sensor detects the temperature in the first water tray 900 in real time and determines whether the temperature in the first water tray 900 is greater than the preset temperature T2 (step S107). When the temperature in the first water tray 900 is greater than the preset temperature T2, the controller 80 controls the solenoid valve 30 to connect the compressor 200 to the refrigeration pipe 10, the defrosting process is stopped, and the refrigeration process is started (step S108).

[0122] When the cooling program starts, the air supply component 500 is turned off to prevent heat from the cooling chamber 160 from being transferred to the storage chamber 120 and causing the temperature in the storage chamber 120 to rise. When the temperature detected by the first detector is greater than or equal to the temperature detected by the second detector (step S109), the air supply component 500 is turned on (step S110) to deliver the low-temperature airflow from the cooling chamber 160 to the storage chamber 120.

[0123] Referring specifically to Figures 3 and 18, before the cooling program starts, the second temperature sensor detects the temperature inside the storage chamber 120. The controller 80 determines whether the temperature inside the storage chamber 120 is greater than a preset temperature t2 (step S111). When the temperature inside the storage chamber 120 is greater than the preset temperature t2 (where t2 is the upper limit of the temperature inside the storage chamber 120), the compressor 200 and the air supply component 500 are turned on, and the cooling program starts (step S112); otherwise, the cooling program does not start (step S113), where t1... <t2。

[0124] The controller 80 determines whether the temperature inside the storage chamber 120 is lower than a preset temperature t3 (step S114). When the temperature detected by the second temperature sensor is lower than the preset temperature t3 (where t3 is the lower limit of the temperature inside the storage chamber 120), the compressor 200 and the air supply component 500 are shut down (step S115), where t3... <t2。

[0125] The defrosting procedure will now be described in detail:

[0126] Referring to Figures 4 and 17, the refrigeration equipment cools under the action of a refrigeration program. The refrigeration program is intermittently switched on and off based on the temperature inside the storage chamber 120.

[0127] When defrosting conditions (e.g., time and / or temperature conditions) are met, if the refrigeration program is in operation, the solenoid valve 30 opens the passage between the compressor 200 and the defrosting line 20, and closes the passage between the compressor 200 and the first heat exchanger 300.

[0128] If the cooling program is off, turn it on first to preheat the compressor to ensure effective defrosting.

[0129] After the cooling program starts for the target time, the solenoid valve 30 opens the passage between the compressor 200 and the defrost line 20, and closes the passage between the compressor 200 and the first heat exchanger 300.

[0130] When the defrosting process begins, the air supply unit 500 is shut off. The high-temperature, high-pressure gaseous refrigerant discharged from the compressor 20 is transported along the defrosting pipeline 20 under the control of the solenoid valve 30. It first enters the defrosting section 910, preheating the first water collection tray 900 to ensure the smooth drainage of the defrosting water flowing through it. The ice blocks melt smoothly and drain into the second water collection tray 800. Then, the refrigerant enters the second heat exchanger 400 to exchange heat with the frost on its surface, achieving rapid and efficient defrosting. After this process, a low-pressure, medium-temperature gas-liquid mixture is formed, which is then separated by the liquid-gas separator 70. The gaseous mixture returns to the compressor 200, and the cycle continues.

[0131] During the defrosting process, the first temperature sensor monitors the temperature inside the first water tray 900 in real time. When the temperature detected by the first sensor is greater than the preset temperature T2, the controller 80 controls the solenoid valve 30 to connect the compressor 200 to the refrigeration pipe 10, thereby stopping the defrosting process and starting the refrigeration process.

[0132] When the cooling program starts, the air supply unit 500 is turned off to prevent heat from the cooling chamber 160 from being transferred to the storage chamber 120, which would cause the temperature in the storage chamber 120 to rise.

[0133] When the temperature detected by the first sensor is greater than or equal to the temperature detected by the second sensor, the air supply unit 500 is activated, delivering the low-temperature airflow from the refrigeration chamber 160 to the storage chamber 120 to initiate the refrigeration process. During the refrigeration process, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 200 is transported along the refrigeration pipeline 10 under the control of the solenoid valve 30, entering the first heat exchanger 300 and then being delivered to the second heat exchanger 400. Strong convection refrigeration occurs between the refrigerant and the storage chamber within the refrigeration chamber 160 where the second heat exchanger 400 is located. The air supply unit 500 continuously delivers the low-temperature airflow from the refrigeration chamber 160 to the storage chamber 120, gradually lowering the temperature of the storage chamber 120 until the temperature detected by the second temperature sensor is lower than the set temperature t3. At this point, the system switches to a shutdown and natural convection state, at which point the compressor 200 stops and the air supply unit 500 stops. The temperature of the storage chamber 120 gradually rises until the temperature detected by the second temperature sensor is greater than the preset temperature value t2, at which point the refrigeration process restarts, and the refrigeration cycle repeats.

[0134] Referring to Figures 3 and 4, a door frame is provided on the front side of the storage chamber 120. A decondensation pipe 40 is installed inside the door frame, connecting the compressor 200 and the first heat exchanger 300. During the refrigeration process, the high-temperature, high-pressure refrigerant output from the compressor 200 releases some heat through the decondensation pipe 40 before entering the first heat exchanger 300. The decondensation pipe 40 can melt the frost on the door frame, preventing problems such as difficulty in opening the door caused by ice buildup on the door frame.

[0135] Referring to Figures 7 and 8, a separate refrigeration chamber 160 is provided within the equipment chamber 110, and at least one communicating passage 130 is provided between the refrigeration chamber 160 and the storage chamber 120. The compressor 200 and the first heat exchanger 300 are installed within the equipment chamber 110 and located outside the refrigeration chamber 160. The second heat exchanger 400 is located within the refrigeration chamber 160.

[0136] Referring to Figure 9, the air supply component 500 is disposed on one side of the second heat exchanger 400. The air supply component 500 is used to transport the airflow after heat exchange in the second heat exchanger 400 to the storage chamber 120 through the connecting channel 130.

[0137] Storage chamber 120 is used to store items to be refrigerated. For easy access, storage chamber 120 is equipped with multiple support shelves for placing items. Low-temperature airflow from refrigeration chamber 160 exits through the top and rear walls of storage chamber 120 into storage chamber 120.

[0138] Referring to Figures 5 and 6, an inner liner is formed within the storage chamber 120, comprising an inner liner top wall 121, inner liner side walls, and an inner liner rear wall 122. Referring to Figure 7, an equipment base plate 111 is provided at the bottom of the equipment chamber 110. To reduce heat exchange between the storage chamber 120 and the equipment chamber 110, a heat-insulating gap 113 is formed between the inner liner top wall 121 and the equipment base plate 111. A connecting channel 130 connects the equipment base plate 111 and the inner liner top wall 121. Low-temperature airflow output from the refrigeration chamber 160 is transported to the storage chamber 120 after passing through the connecting channel 130.

[0139] Referring to Figures 6 and 7, an upper connecting port 112 is provided on the equipment base plate 111, and a lower connecting port 1211 is provided on the top wall 121 of the inner liner. The number of upper connecting ports 112 and lower connecting ports 1211 is adapted to the connecting channel 130. The top and bottom of the connecting channel 130 are connected to the upper connecting port 112 and the lower connecting port 1211, respectively. In some embodiments, a sealing element is provided between the connecting channel 130 and the upper connecting port 112 and the lower connecting port 1211 to prevent leakage of low-temperature airflow.

[0140] Referring to Figures 10-13, in some embodiments, the second heat exchanger 400 is fixed to the bottom of the refrigeration chamber 160 by a support base 600. The support base 600 is fixed to the equipment base plate 111. A downwardly recessed air passage 660 is formed on the support base 600. Two mounting surfaces 620 are provided on the support base 600, respectively located at both ends of the air passage 660. The bottom of the second heat exchanger 400 is supported on the two mounting surfaces 620. In some embodiments, a first water receiving tray 900 is disposed on the air passage 660, and the first water receiving tray 900 is located below the second heat exchanger 400. Specifically, inclined first support surfaces 630 are formed on both sides of the air passage 660, and the first water receiving tray 900 is inclined under the action of the first support surfaces 630.

[0141] Referring to Figures 11 and 12, the drain pipe 920 is connected to the lowest side of the first water receiving tray 900. To limit the position of the drain pipe 920, a downwardly recessed drain portion 640 is provided on the support base 600, within which the drain pipe 920 is housed. A through-hole 610 is formed at the bottom of the support base 600, communicating with the connecting channel 130.

[0142] Referring to Figure 12, a second water receiving tray 800 is also provided in the equipment chamber 110. The second water receiving tray 800 is located outside the refrigeration chamber 160, and the second water receiving tray 800 and the first water receiving tray 900 are connected by a drain pipe 920. An evaporation pipe 810 is provided at the bottom of the second water receiving tray 800, and the evaporation pipe 810 is connected between the output end of the compressor 200 and the first heat exchanger 300.

[0143] In other embodiments, a refrigeration device is also proposed, which includes a housing 100 and a refrigeration system. The refrigeration device in this embodiment has a generally similar structure to the refrigeration device in the aforementioned embodiments, except that, referring to FIG. 9, a damper assembly 700 is also provided in the connecting channel 130. During defrosting, the damper assembly 700 can be closed to completely isolate the equipment chamber 110 and the storage chamber 120, further reducing heat exchange.

[0144] When the preset defrosting conditions are met, the controller 80 controls the air valve assembly 700 to close and opens the defrosting circuit so that the heat of the refrigerant in the defrosting section 910 is transferred to the first water receiving pan 900 to perform defrosting on the first water receiving pan 900.

[0145] Referring to Figures 9-10, in some embodiments, a damper assembly 700 is disposed between the equipment chamber 110 and the storage chamber 120 to further reduce heat transfer between the two chambers. The damper assembly 700 controls the opening and closing of the communication channel 130. When the refrigeration system is not operating, the damper assembly 700 closes the communication channel 130 to isolate the equipment chamber 110 and the storage chamber 120, further reducing heat transfer and improving cooling and cold preservation effects.

[0146] Specifically, referring to Figures 11 and 12, the support base 600 has a downwardly recessed mounting portion 650, which is formed above the air passage 610. The damper assembly 700 is disposed within the mounting portion 650. Referring to Figure 14, the damper assembly 700 includes a damper bracket 720, a damper portion 710, and a drive portion 730. The damper bracket 720 is disposed on the air passage 610.

[0147] Referring to Figure 14, the drive unit 730 is fixed to the damper bracket 720. The damper unit 710 is connected to the output end of the drive unit 730. The drive unit 730 is used to control the damper unit 710 to rotate up and down along a target angle, thereby controlling the opening and closing of the air passage 610.

[0148] Referring to Figure 14, the damper bracket 720 includes a damper crossbar 721 and a damper upright 722 arranged perpendicularly to each other. The damper crossbar 721 is fixed above the air passage 610. The damper crossbar 721 and the damper upright 722 are used to limit the opening and closing position of the damper section 710. Reinforcing portions 723 are provided at intervals on the damper crossbar 721 and the damper upright 722 to improve the structural strength of the damper bracket 720. In some embodiments, the reinforcing portions 723 may be reinforcing ribs.

[0149] Referring to Figure 15, with the air passage 610 closed, the drive unit 730 drives the air valve unit 710 to rotate until it contacts the air valve crossbar 721, thereby closing the air passage 610.

[0150] Referring to Figure 16, with the air passage 610 open, the drive unit 730 drives the air valve unit 710 to rotate until it contacts the air valve stand 722, thus opening the air passage 610.

[0151] In some embodiments, referring to Figures 5 and 6, in order to improve the efficiency of airflow delivery, the connecting channel 130 includes a first connecting channel 131 and a second connecting channel 132. The first connecting channel 131 is connected to the top wall 121 of the inner liner, and the second connecting channel 132 is connected to the rear wall 122 of the inner liner.

[0152] Referring to Figure 15, an air passage gap 670 is formed between the bottom of the second heat exchanger 400 and the air passage portion 660 of the support base 600. The air passage gap 670 connects the first connecting channel 131 and the second connecting channel 132 to each other, so that the low-temperature airflow output by the air supply component 500 is simultaneously delivered to the storage chamber 120 from the first connecting channel 131 and the second connecting channel 132.

[0153] Referring to Figure 5, an air guiding assembly is also provided inside the storage chamber 120. The air guiding assembly is used to transport the airflow output from the connecting channel 130 to the top and rear of the storage chamber 120. Specifically, the air guiding assembly includes a first air guide 140 disposed at the top of the storage chamber 120 and a second air guide 150 disposed on the rear wall of the storage chamber 120. Both the first air guide 140 and the second air guide 150 are sheet metal formed structures. The first air guide 140 and the second air guide 150 are fixed inside the storage chamber 120 by fasteners such as fastening screws. Multiple air outlets are dispersedly formed on the first air guide 140 and the second air guide 150. The multiple air outlets are arranged in an array to achieve uniform delivery of low-temperature airflow into the storage chamber 120. Specifically, the first air guide 140 is fixed to the top wall 121 of the inner liner, and the second air guide 150 is fixed to the rear wall 122 of the inner liner. A first air guide cavity is formed between the first air guide 140 and the storage chamber 120, and a second air guide cavity is formed between the second air guide 150 and the storage chamber 120. A first connecting channel 131 is connected to the first air guide cavity, and a second connecting channel 132 is connected to the second air guide cavity.

[0154] Referring to Figure 6, the first air guide 140 extends along the depth direction of the storage chamber 120, and includes a first air guide section 141 and a first air outlet section 142. The first air guide section 141 is located between the first connecting channel 131 and the first air outlet section 142. An air outlet 143 is provided at the bottom of the refrigeration chamber 160, formed on the first air outlet section 142 and connected to the connecting channel 130. An air passage 610 formed at the bottom of the support base 600 corresponds to the position of the air outlet 143.

[0155] Referring to Figure 6, the second air guide 150 extends along the height direction of the storage chamber 120 and includes a second air guide section 151 and a second air outlet section 152. The second air guide section 151 is located between the second connecting channel 132 and the second air outlet section 152, and the air outlet is located on the second air outlet section 152. The second air guide section 151 is an inclined structure extending towards the rear wall 122 of the inner liner. The second air guide section 151 and the second connecting channel 132 are connected by a connecting stand 1321.

[0156] In another embodiment, the refrigeration device cools under the action of a refrigeration program. The refrigeration program is intermittently switched on and off based on the temperature inside the storage chamber 120.

[0157] Referring to Figures 20 and 21, the controller 80 is configured to: determine whether defrosting conditions have been met (step S201). If defrosting conditions have not been met, the original shutdown state or refrigeration program state is maintained (step S202). When defrosting conditions (e.g., time conditions and / or temperature conditions) are met, it is determined whether the refrigeration program is in operation (step S203). If the refrigeration program is in a shut-off state, the compressor, air valve assembly, and air supply component are turned on to start the refrigeration program (step S204). If the refrigeration program is in operation, the solenoid valve 30 opens the passage between the compressor 200 and the defrosting pipeline 20, and closes the passage between the compressor 200 and the first heat exchanger 300.

[0158] If the cooling program is off, turn it on first to preheat the compressor to ensure effective defrosting.

[0159] After the cooling program starts for the target time, the solenoid valve 30 opens the passage between the compressor 200 and the defrost line 20, and closes the passage between the compressor 200 and the first heat exchanger 300.

[0160] In some embodiments, before starting the defrosting procedure, the controller 80 determines the detection temperature of the second temperature sensor (step S205). When the detection temperature of the second temperature sensor is lower than the preset temperature t1, the defrosting procedure is started, and the air valve assembly and the air supply component are closed (step S206).

[0161] When the defrosting program is started, the air valve assembly 700 cuts off the connecting channel 130, the air supply component 500 is turned off, and the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 200 is transported along the defrosting pipeline 20 under the control of the solenoid valve 30. It first enters the defrosting section 910, preheats the first water receiving pan 900, so that the defrosting water flowing through it can be smoothly discharged and the ice blocks can be smoothly melted and discharged into the second water receiving pan 800. Then the refrigerant enters the interior of the second heat exchanger 400 and exchanges heat with the ice and frost on its surface to achieve rapid and efficient defrosting. After defrosting, it becomes a low-pressure medium-temperature gas-liquid mixture, which is separated by the liquid-gas separator. The gas returns to the compressor 200, and the cycle continues.

[0162] During the defrosting process, the first temperature sensor detects the temperature in the first water tray 900 in real time and determines whether the temperature in the first water tray 900 is greater than the preset temperature T2 (step S207). When the temperature detected by the first sensor is greater than the preset temperature T2, the controller 80 controls the solenoid valve 30 to connect the compressor 200 to the refrigeration pipe 10, the defrosting process is stopped, and the refrigeration process is started (step S208).

[0163] When the cooling program starts, the air valve assembly 700 and the air supply component 500 are in the off state to prevent heat from the cooling chamber 160 from being transferred to the storage chamber 120 and causing the temperature in the storage chamber 120 to rise.

[0164] When the detection temperature of the first detection element is greater than or equal to the detection temperature of the second detection element (step S209), the air valve assembly 700 opens (step S210), and the low-temperature airflow in the refrigeration chamber 160 is delivered to the storage chamber 120 to carry out the refrigeration process.

[0165] Referring to Figures 19 and 22, before the refrigeration program starts, the second temperature detection device detects the temperature inside the storage chamber 120. It determines whether the temperature inside the storage chamber 120 is greater than the preset temperature t2 (step S211). If the temperature inside the storage chamber 120 is greater than the preset temperature t2, the compressor 200 and the air supply device 500 are turned on, and the refrigeration program starts (step S213). Otherwise, it remains off (step S212). During the refrigeration program, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 200 is transported along the refrigeration pipeline 10 under the control of the solenoid valve 30, enters the first heat exchanger 300, and is then transported to the second heat exchanger 400. In the refrigeration chamber 160 where the second heat exchanger 400 is located, it undergoes strong convection refrigeration with the storage chamber. The air supply unit 500 continuously delivers the low-temperature airflow from the cooling chamber 160 to the storage chamber 120, causing the temperature of the storage chamber 120 to gradually decrease until the temperature detected by the second temperature sensor is lower than the set temperature t3 (step S214). At this time, it switches to a shutdown and natural convection state, and the compressor 200 stops, and the air supply unit 500 stops (step S215). The temperature of the storage chamber 120 gradually rises until the temperature detected by the second temperature sensor is higher than the preset temperature value t2. Then, the cooling program restarts, and the cooling cycle repeats.

[0166] The refrigeration system of the aforementioned refrigeration equipment includes a refrigeration process and a defrosting process. During the refrigeration process, the refrigeration pipe 10 between the compressor 200 and the first heat exchanger 300 is connected, while the defrosting pipe 20 is disconnected from the compressor 200. The second heat exchanger 400 acts as an evaporator to refrigerate the storage chamber. During the defrosting process, the defrosting pipe 20 is connected to the compressor 200, while the refrigeration pipe 10 is disconnected from the compressor 200. The high-temperature refrigerant discharged from the compressor 200 first rapidly preheats the first water collection pan 900 through the defrosting section 910, and then enters the second heat exchanger 400 to melt the frost on its surface. This ensures that the defrosting water droplets fall smoothly into the second water collection pan 800 and are drained away without freezing, which helps reduce the overall size of the equipment and increase the volume of the storage chamber 110.

[0167] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0168] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A refrigeration device, comprising: a cabinet, comprising: a storage chamber; and a device chamber located at one side of the storage chamber; a refrigeration compartment is further arranged in the device chamber, and a communication passage is arranged between the refrigeration compartment and the storage chamber; a refrigeration system, comprising: a compressor arranged in the device chamber; a first heat exchanger arranged in the device chamber; a second heat exchanger arranged in the refrigeration compartment, the compressor, the first heat exchanger and the second heat exchanger are sequentially connected through a refrigeration pipeline; a defrosting pipeline, two ends of the defrosting pipeline are respectively connected with an output end of the compressor and an input end of the second heat exchanger; a first water pan arranged below the second heat exchanger; and a defrosting part arranged on the defrosting pipeline and connected with the first water pan; and a controller electrically connected with the compressor, the controller is configured to: in a refrigeration program, when a preset defrosting condition is met, refrigerant output from the compressor is returned to the compressor after passing through the defrosting pipeline, the defrosting part and the second heat exchanger, so as to transfer heat of the refrigerant in the defrosting part to the first water pan. 2.The refrigeration device according to claim 1, wherein the defrosting pipeline is connected to the refrigeration pipeline through a solenoid valve, in the refrigeration program, the controller controls the solenoid valve to open a passage between the compressor and the first heat exchanger; in a defrosting program, the controller controls the solenoid valve to open a passage between the compressor and the defrosting pipeline. 3.The refrigeration device according to claim 2, further comprising a first temperature detection member arranged in the first water pan and used for detecting a temperature in the first water pan; the defrosting condition comprises judging the detection temperature of the first temperature detection member, when the detection temperature of the first temperature detection member is lower than a preset temperature T1, the defrosting program is started; and / or, the defrosting condition comprises judging a continuous running time of the refrigeration program, when the running time of the refrigeration program reaches a preset running period, the defrosting program is started. 4.The refrigeration device according to claim 3, further comprising a second temperature detection member arranged in the storage chamber and used for detecting a temperature in the storage chamber; before starting the defrosting program, the controller judges the detection temperature of the second temperature detection member, when the detection temperature of the second temperature detection member is lower than a preset temperature t1, the defrosting program is started. 5.The refrigeration device according to claim 4, wherein during the starting of the defrosting program, the first temperature detection member detects the temperature in the first water pan in real time, when the temperature in the first water pan is greater than a preset temperature T2, the controller controls the solenoid valve to communicate the compressor with the refrigeration pipeline, the defrosting program is stopped, and the refrigeration program is started.

6. The refrigeration device of claim 5, wherein the refrigeration chamber is further provided with an air supply element for conveying the airflow after heat exchange with the second heat exchanger into the storage chamber through the communication passage, and the air supply element is in an off state during the defrosting program.

7. The refrigeration device of claim 6, wherein after the refrigeration program start signal is acquired, the second temperature detecting member detects the temperature in the storage chamber, and when the temperature in the storage chamber is greater than a preset temperature t2, the compressor and the air supply member are started, and the refrigeration program is started; otherwise, the refrigeration program is not started. t1 < t2.

8. The refrigeration device of claim 7, wherein during operation of the refrigeration program, the second temperature detecting member detects the temperature in the storage chamber in real time, and when the temperature in the storage chamber is lower than a preset temperature t3, the compressor and the air supply member are turned off, wherein, t3 < t2.

9. The refrigeration device of claim 1, wherein the device chamber is further provided with a second water pan, the second water pan is arranged outside the refrigeration chamber, the second water pan and the water pan are connected through a drain pipe, and the bottom of the second water pan is provided with an evaporation pipe connected between the output end of the compressor and the first heat exchanger.

10. A refrigeration device, comprising: a cabinet, comprising: a storage chamber; a device chamber arranged on one side of the storage chamber; the device chamber is further provided with a refrigeration chamber, and a communication passage is arranged between the refrigeration chamber and the storage chamber; an air valve assembly arranged in the communication passage; a refrigeration system, comprising: a refrigeration circuit, comprising: a compressor arranged in the device chamber; a first heat exchanger arranged in the device chamber; a second heat exchanger arranged in the refrigeration chamber, the compressor, the first heat exchanger, and the second heat exchanger are sequentially connected through a refrigeration pipeline; and a defrosting circuit, comprising: a defrosting pipeline connected in parallel with the first heat exchanger; and a defrosting part arranged on the defrosting pipeline, the defrosting part is connected with the first water pan; and a controller electrically connected with the compressor, the controller is configured to: when a preset defrosting condition is met, the air valve assembly is closed, a defrosting program is started, heat of refrigerant in the defrosting part is transferred to the first water pan, and the first water pan is defrosted.

11. A refrigeration device, comprising: a cabinet, comprising: a storage chamber; and a device chamber arranged on one side of the storage chamber; the device chamber is further provided with a refrigeration chamber, and a communication passage is arranged between the refrigeration chamber and the storage chamber; an air valve assembly arranged in the communication passage; the air valve assembly is used for controlling the opening and closing of the communication passage; a refrigeration system, comprising: a compressor arranged in the device chamber; a first heat exchanger arranged in the device chamber; a second heat exchanger arranged in the refrigeration chamber, the compressor, the first heat exchanger, and the second heat exchanger are sequentially connected through a refrigeration pipeline; a defrosting pipeline, two ends of the defrosting pipeline are respectively connected with the output end of the compressor and the input end of the second heat exchanger; a first water pan arranged below the second heat exchanger; and a defrosting part arranged on the defrosting pipeline, and the defrosting part is connected with the first water pan.

12. The refrigeration device according to claim 11, wherein a bottom of the refrigeration compartment is provided with an air outlet communicating with the communicating passage, and the refrigeration compartment is further provided with an air supply member for conveying the air flow after heat exchange of the second heat exchanger to the storage chamber through the communicating passage.

13. The refrigeration device according to claim 12, further comprising a supporting base, wherein the second heat exchanger is fixed to the bottom of the refrigeration compartment through the supporting base, and a bottom of the supporting base is formed with a wind passing hole corresponding to a position of the air outlet.

14. The refrigeration device according to claim 13, wherein the air valve assembly comprises an air valve bracket, an air valve part and a driving part, the air valve bracket is arranged on the wind passing hole, the driving part is connected to the air valve bracket, and the air valve part is connected to an output end of the driving part for controlling opening and closing of the wind passing hole.

15. The refrigeration device according to claim 11, wherein a heat insulation gap is formed between the device chamber and the storage chamber, and the communicating passage is located in the heat insulation gap.

16. The refrigeration device according to claim 11, wherein the refrigeration system further comprises a second water pan arranged in the device chamber, the second water pan is located outside the refrigeration compartment, the second water pan and the first water pan are connected through a drain pipe, and a bottom of the second water pan is provided with an evaporation pipe connected between an output end of the compressor and the first heat exchanger.

17. The refrigeration device according to claim 11, wherein the refrigeration system further comprises an air guide assembly arranged in the storage chamber, the air guide assembly is connected to a bottom of the communicating passage, and the air guide assembly comprises a first air guide member arranged at a top of the storage chamber and a second air guide member arranged on a rear wall of the storage chamber, the air guide assembly is used for conveying the air flow output from the communicating passage to the storage chamber.

18. The refrigeration device according to claim 11, wherein the defrosting pipe is connected to the refrigeration pipe through an electromagnetic valve, in a refrigeration state, the electromagnetic valve opens a passage between the compressor and the first heat exchanger, and in a defrosting state, the electromagnetic valve opens a passage between the compressor and the defrosting pipe.

19. The refrigeration device according to claim 11, wherein a door frame part is arranged on one side of the storage chamber, a defrosting pipe is arranged in the door frame part, and the defrosting pipe is connected between the compressor and the first heat exchanger.

20. The refrigeration device according to claim 11, wherein a drying filter and a throttling device are further arranged between the first heat exchanger and the second heat exchanger, and a gas-liquid separator is further arranged between the second heat exchanger and the compressor, and the drying filter, the throttling device and the gas-liquid separator are all installed in the device chamber.

21. A refrigeration device, comprising: a cabinet, including: a storage chamber; and a device chamber, the device chamber being located on one side of the storage chamber; and a refrigeration system, including: a compressor, the compressor being arranged in the device chamber; a first heat exchanger arranged in the equipment chamber; a second heat exchanger arranged in the equipment chamber, the compressor, the first heat exchanger and the second heat exchanger being connected in sequence by a refrigeration pipeline; a defrosting pipeline, two ends of the defrosting pipeline being connected with an output end of the compressor and an input end of the second heat exchanger respectively; a first water collecting tray arranged below the second heat exchanger; and a defrosting part arranged on the defrosting pipeline and connected with the first water collecting tray.

22. The refrigeration equipment according to claim 21, wherein a first switch part is arranged between the first heat exchanger and the compressor, and a second switch part is arranged on the defrosting pipeline, in a refrigeration program, the first switch part is in a communication state, and the second switch part is in a disconnection state; in a defrosting program, the first switch part is in a disconnection state, and the second switch part is in a communication state.

23. The refrigeration equipment according to claim 21, wherein the defrosting pipeline is connected on the refrigeration pipeline by a solenoid valve, in a refrigeration program, the solenoid valve opens a passage between the compressor and the first heat exchanger; in a defrosting program, the solenoid valve opens a passage between the compressor and the defrosting pipeline.

24. The refrigeration equipment according to claim 21, wherein the refrigeration system further comprises a second water collecting tray arranged in the equipment chamber, the first water collecting tray and the second water collecting tray are connected by a drain pipe, and an evaporation pipe is further arranged between the compressor and the first heat exchanger, the evaporation pipe is arranged in the second water collecting tray and used for evaporating water in the second water collecting tray.

25. The refrigeration equipment according to claim 21, wherein a door frame part is arranged on one side of the storage chamber, a dew removing pipe is arranged in the door frame part, and the dew removing pipe is connected between the compressor and the first heat exchanger.

26. The refrigeration equipment according to claim 21, wherein a drying filter and a throttling device are further arranged between the first heat exchanger and the second heat exchanger, and a gas-liquid separator is further arranged between the second heat exchanger and the compressor, the drying filter, the throttling device and the gas-liquid separator are all arranged in the equipment chamber.

27. The refrigeration equipment according to claim 24, wherein the equipment chamber is arranged above the storage chamber, a refrigeration chamber is arranged in the equipment chamber, a communication passage is arranged between the refrigeration chamber and the storage chamber, the second heat exchanger and the first water collecting tray are arranged in the refrigeration chamber, a blower is arranged beside the second heat exchanger, and the blower is used for conveying air flow after heat exchange of the second heat exchanger to the storage chamber through the communication passage.

28. The refrigeration appliance of claim 27, further comprising a support base, wherein the second heat exchanger is fixed at the bottom of the refrigeration compartment through the support base, a wind passing portion is formed on the support base, a wind passing gap is formed between the bottom of the second heat exchanger and the wind passing portion, a wind passing hole is formed on the bottom of the support base and communicates with the communication passage.

29. The refrigeration appliance of claim 28, wherein two sides of the wind passing portion are formed with first support surfaces, the first water pan is arranged obliquely under the action of the first support surfaces, and the drain pipe is connected at a side of the first water pan with the lowest position.

30. The refrigeration appliance of claim 21, wherein a device bottom plate is formed on the bottom of the device compartment, an inner container is formed in the storage compartment, the inner container comprises an inner container top wall, a heat insulation gap is formed between the inner container top wall and the device bottom plate, and the communication passage is connected between the device bottom plate and the inner container top wall.

Images