Refrigeration device

Abstract

A refrigeration device, comprising: a box (100), the box (100) comprising: a storage chamber (120) and a device chamber (110), the device chamber (110) being located above the storage chamber (120); a refrigeration compartment (160) disposed in the device chamber (110), at least one communication channel (130) being provided between the refrigeration compartment (160) and the storage chamber (120); a refrigeration system, the refrigeration system comprising: a compressor (200), the compressor (200) being disposed in the device chamber (110); a first heat exchanger (300), the first heat exchanger (300) being disposed in the device chamber (110) and located on the outer side of the refrigeration compartment (160); a second heat exchanger (400), the second heat exchanger (400) being disposed in the refrigeration compartment (160), and the compressor (200), the first heat exchanger (300), and the second heat exchanger (400) being sequentially connected by means of a refrigeration pipeline (10); and an air supply member (500) disposed beside the second heat exchanger (400), the air supply member (500) being used for conveying an airflow having undergone heat exchange by the second heat exchanger (400) into the storage chamber (120) by means of the communication channel (130).

Description

Refrigeration equipment

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202410693126.5 entitled "Refrigeration Equipment", filed on May 30, 2024; Chinese patent application No. 202421217700.1 entitled "Refrigeration Equipment", filed on May 30, 2024; and Chinese patent application No. 202421217241.7 entitled "Refrigeration Equipment", all of which are incorporated herein by reference in their entirety. Technical Field

[0003] This application belongs to the field of electrical equipment technology, and in particular 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 storage compartments to hold items that need to be refrigerated, and the door allows users to easily access these items.

[0005] Refrigerators lower the internal temperature by transferring internal heat to the outside. In air-cooled refrigerators, the evaporator is typically 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. Convection and heat conduction can easily cause the temperature in the storage chamber to rise again, affecting the cooling effect and the quality of the items stored inside.

[0006] To avoid temperature rise in the storage chamber during defrosting, a dual refrigeration system is generally adopted in related technologies. While one refrigeration circuit is in the defrosting circuit, the other refrigeration circuit continues to cool the storage chamber. This makes the entire equipment too large, the manufacturing cost too high, and the energy consumption too high, resulting in unsatisfactory energy-saving effects.

[0007] In addition, in related technologies, the defrosting program is generally activated periodically, and its frost monitoring effect on the water pan and evaporator is not ideal. It cannot intelligently respond to the frost situation of the components in a timely manner, which may result in delayed frost formation and abnormal operation of the components.

[0008] Summary of the Invention

[0009] This application provides a refrigeration device to solve the problems existing in the conventional technology, such as strong convection and heat conduction between the equipment chamber and the storage chamber, which cause the temperature in the equipment chamber to rise during the defrosting process, resulting in a temperature rise in the storage chamber and affecting the storage effect of the storage chamber.

[0010] According to the first aspect, a refrigeration device is proposed, comprising:

[0011] The enclosure includes:

[0012] A storage chamber and an equipment chamber, wherein the equipment chamber is located above the storage chamber;

[0013] A refrigeration chamber is provided inside the equipment chamber, and at least one communication passage is provided between the refrigeration chamber and the storage chamber;

[0014] Refrigeration system, including:

[0015] The compressor is disposed within the equipment chamber;

[0016] The first heat exchanger is disposed in the equipment chamber and located outside the refrigeration chamber;

[0017] 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;

[0018] An air supply component is disposed on the side of the second heat exchanger. The air supply component is used to transport the airflow after heat exchange in the second heat exchanger to the storage chamber through the connecting channel.

[0019] The aforementioned refrigeration equipment has its equipment chamber and refrigeration compartment positioned above the storage chamber, increasing the effective volume of the storage chamber and facilitating the storage of more items. Furthermore, since the air supply components next to the second heat exchanger (e.g., evaporator) are shut off during actual defrosting, no forced convection occurs between the refrigeration compartment and the storage chamber. During defrosting, the temperature in the refrigeration compartment rises, causing the high-temperature airflow to rise naturally, while the low-temperature airflow in the storage chamber naturally sinks. This effectively reduces heat exchange between the refrigeration compartment and the storage chamber, minimizing the temperature rise in the storage chamber during defrosting. No additional refrigeration operation is required, resulting in greater energy savings.

[0020] According to the second aspect, a refrigeration device is proposed, comprising:

[0021] The enclosure includes:

[0022] Equipment chamber and storage chamber, wherein the equipment chamber is located above the storage chamber;

[0023] A refrigeration chamber is provided inside the equipment chamber, and at least one communication passage is provided between the refrigeration chamber and the storage chamber;

[0024] An air valve assembly is disposed within the communication channel and is used to control the opening and closing of the communication channel;

[0025] Refrigeration system, including:

[0026] The compressor is disposed within the equipment chamber;

[0027] The first heat exchanger is disposed in the equipment chamber and located outside the refrigeration chamber;

[0028] 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;

[0029] An air supply component is disposed on the side of the second heat exchanger.

[0030] The refrigeration equipment provided in the second aspect above has a connecting channel between the refrigeration chamber and the storage chamber. The opening and closing of the connecting channel is controlled by a damper assembly. During the actual defrosting process, the damper assembly closes the connecting channel, and the air supply component next to the second heat exchanger (e.g., evaporator) is shut off. No forced convection occurs between the refrigeration chamber and the storage chamber, which can effectively isolate the heat exchange between the refrigeration chamber and the storage chamber, reduce the temperature rise of the storage chamber during the defrosting process, eliminate the need for additional refrigeration operations, and save more energy.

[0031] According to the third aspect, a refrigeration device is proposed, comprising:

[0032] The enclosure includes a refrigeration compartment and a storage compartment;

[0033] A connecting passage is provided between the refrigeration chamber and the storage chamber;

[0034] An air valve assembly is installed inside the housing and is used to control the opening and closing of the communication channel;

[0035] A refrigeration system is installed inside the enclosure, and the refrigeration system includes:

[0036] The refrigeration piping is used to connect the compressor, the first heat exchanger and the second heat exchanger in sequence; the second heat exchanger is located in the refrigeration room, and a first water receiving tray is provided below the second heat exchanger;

[0037] A defrosting pipeline, the two ends of which are connected to the output end of the compressor and the input end of the second heat exchanger, respectively, is provided with a defrosting section, which is connected to the first water receiving tray; and

[0038] The controller is configured such that, under the refrigeration program, when the preset defrosting conditions are met, the air valve assembly closes, and the refrigerant output from the compressor passes through the defrosting pipeline, the defrosting section, and the second heat exchanger before being returned to the compressor, so that the heat of the refrigerant in the defrosting section is transferred to the first water collection pan.

[0039] The refrigeration equipment provided in the third aspect above makes the intelligent control of frost formation more ideal, alleviates the temperature rise in the storage chamber caused by the temperature rise in the equipment chamber during the defrosting process, and thus ensures the storage effect of the storage chamber.

[0040] This application also proposes a refrigeration device in its fourth aspect, comprising:

[0041] The enclosure includes a refrigeration compartment and a storage compartment;

[0042] A connecting passage is provided between the refrigeration chamber and the storage chamber;

[0043] An air valve assembly is installed inside the housing and is used to control the opening and closing of the communication channel;

[0044] Refrigeration system, including:

[0045] Refrigeration circuit, the refrigeration circuit comprising:

[0046] A compressor, a first heat exchanger, and a second heat exchanger are connected by refrigeration piping; a first water receiving tray is provided below the second heat exchanger; and

[0047] Defrosting circuit, the defrosting circuit comprising:

[0048] A defrosting pipeline is provided, which is used to connect in parallel with the first heat exchanger. The defrosting pipeline is provided with a defrosting section, which is connected to the first water receiving pan.

[0049] The controller is configured to: when preset defrosting conditions are met, close the air valve assembly and open the defrosting circuit so that the heat of the refrigerant in the defrosting section is transferred to the first water receiving pan to perform defrosting on the first water receiving pan.

[0050] The refrigeration equipment provided in the fourth aspect above has a connecting channel between the refrigeration chamber and the storage chamber. The opening and closing of the connecting channel is controlled by a damper assembly. During the actual defrosting process, the damper assembly closes the connecting channel, and the air supply component next to the second heat exchanger (e.g., evaporator) is shut off. No forced convection occurs between the refrigeration chamber and the storage chamber, which can effectively isolate the heat exchange between the refrigeration chamber and the storage chamber, reduce the temperature rise of the storage chamber during the defrosting process, eliminate the need for additional refrigeration operations, and save more energy.

[0051] In addition, the controller monitors the temperature in the refrigeration chamber and storage chamber in real time. When the preset defrosting conditions are met, the refrigeration system 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. This ensures that the defrosting water droplets fall into the water tray and are discharged smoothly without being frozen. The system is highly intelligent, the equipment operates stably, and it is also beneficial to reduce the overall size of the equipment and increase the volume of the storage chamber.

[0052] 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

[0053] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the accompanying drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 is a schematic diagram of the external structure of a refrigeration device according to some embodiments.

[0055] Figure 2 is a schematic diagram of the internal structure of a refrigeration device according to some embodiments.

[0056] Figure 3 is a schematic diagram of the location of the connecting channel according to some embodiments.

[0057] Figure 4 is an exploded view of Figure 3.

[0058] Figure 5 is a schematic diagram of the structure of the device chamber according to some embodiments.

[0059] Figure 6 is a structural schematic diagram of a refrigeration room according to some embodiments.

[0060] Figure 7 is a connection diagram of a refrigeration system according to some embodiments.

[0061] Figure 8 is an exploded view of Figure 7.

[0062] Figure 9 is a structural schematic diagram of a support base according to some embodiments.

[0063] Figure 10 is a schematic diagram of the installation of a second heat exchanger according to some embodiments.

[0064] Figure 11 is a schematic diagram of the connection between the first water receiving tray and the second water receiving tray according to some embodiments.

[0065] Figure 12 is a schematic diagram of the disassembled structure of a damper assembly according to some embodiments.

[0066] Figure 13 is a cross-sectional schematic diagram of the damper assembly in the open state according to some embodiments.

[0067] Figure 14 is a structural schematic diagram of the damper assembly in the closed state according to some embodiments.

[0068] Figure 15 is a schematic diagram of a refrigeration device without a damper assembly according to some embodiments.

[0069] Figure 16 is a schematic diagram of the refrigeration equipment in the closed state of the air valve assembly according to some embodiments.

[0070] Figure 17 is a schematic diagram of the refrigeration equipment in the open state of the air valve assembly according to some embodiments.

[0071] Figure 18 is a schematic diagram of a refrigeration system according to some embodiments.

[0072] Figure 19 is a schematic diagram of the operation of a refrigeration process according to some embodiments.

[0073] Figure 20 is a schematic diagram of the defrosting procedure according to some embodiments.

[0074] Figure 21 is a schematic flowchart of a defrosting procedure according to some embodiments.

[0075] Figure 22 is a schematic flowchart of a cooling process according to some embodiments. Detailed Implementation

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] In this application, unless otherwise expressly 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 being 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 being 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.

[0081] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. 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, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0082] This application provides a refrigeration device, which typically includes a housing, a door, and a refrigeration system. The housing contains at least one refrigeration compartment, which is opened and closed via a door to facilitate the storage and retrieval of items.

[0083] Specifically, a refrigeration system executes a refrigeration cycle in refrigeration equipment by using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool the items inside the container.

[0084] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into a high-temperature, high-pressure refrigerant gas and discharges the compressed gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant gas into a liquid phase, releasing heat to the surrounding environment through the condensation process.

[0085] The expansion valve expands the high-temperature, high-pressure liquid refrigerant that has condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator can cool the items inside the container by utilizing the latent heat of refrigerant evaporation.

[0086] This application proposes a refrigeration device, as shown in Figure 1, which includes a housing 100 and a refrigeration system.

[0087] In some embodiments, housing 100 includes equipment chamber 110.

[0088] In some embodiments, the housing 100 further includes a storage chamber 120, with the device chamber 110 located above the storage chamber 120, which helps to increase the effective volume of the storage chamber 120 and store more items.

[0089] Figure 2 is a schematic diagram of the internal structure of the refrigeration device in an embodiment of this application. As shown in Figure 2, the device chamber 110 is located above the storage chamber 120, wherein the device chamber 110 is used to accommodate the working parts required for the operation of the refrigeration system, and the storage chamber 120 is used to store items.

[0090] In some embodiments, as shown in Figures 7 and 8, Figure 7 is a schematic diagram of the refrigeration system structure and Figure 8 is an exploded view of Figure 7. The equipment chamber 110 is used to install the working components required for the operation of the refrigeration system, including a compressor 200, a first heat exchanger 300, a second heat exchanger 400, a gas-liquid separator 70, and a throttling device 60 connected through the refrigeration pipeline 10.

[0091] In some embodiments, as shown in FIG18, FIG18 is a schematic diagram of the refrigeration system principle. The first heat exchanger 300 is specifically a condenser, which is connected to the output end of the compressor 200. After passing through the dryer filter 50 and the throttling device 60, the output end of the first heat exchanger 300 is connected to the second heat exchanger 400. The second heat exchanger 400 acts as an evaporator during the refrigeration process. The output end of the second heat exchanger 400 is connected to the gas-liquid separator 70, and the output end of the gas-liquid separator 70 is connected to the compressor 200.

[0092] During the refrigeration process, the high-temperature, high-pressure refrigerant output from 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 is used to expand the high-temperature, high-pressure liquid refrigerant formed in the condenser into a low-pressure liquid refrigerant.

[0093] The second heat exchanger 400 is used to evaporate the refrigerant that expands in the expansion valve and return the refrigerant gas at a low temperature and low pressure to the compressor 200. The second heat exchanger 400 is used to cool the items inside the housing 100 by utilizing the latent heat of refrigerant evaporation.

[0094] In some embodiments, as shown in Figures 5 and 6, a cooling chamber 160 is provided inside the equipment chamber 110, and the cooling chamber 160 is independently provided relative to the equipment chamber 110.

[0095] In the above embodiment, the equipment chamber 110 and the refrigeration chamber 160 are located above the storage chamber, which increases the effective volume of the storage chamber and is beneficial for storing more items.

[0096] In some embodiments, as shown in FIG15, at least one communication channel 130 is provided between the refrigeration chamber 160 and the storage chamber 120.

[0097] Specifically, the compressor 200 and the first heat exchanger 300 are installed inside the equipment chamber 110 and located outside the refrigeration chamber 160.

[0098] The second heat exchanger 400 is installed in the refrigeration chamber 160. An air supply component 500 is installed on the side of the second heat exchanger 400. The air supply component 500 is used to transport the airflow after heat exchange by the second heat exchanger 400 to the storage chamber 120 through the connecting channel 130.

[0099] In this embodiment, during the actual defrosting process, the air supply component next to the second heat exchanger (e.g., evaporator) is shut off, and no forced convection occurs between the refrigeration chamber and the storage chamber. During the defrosting process, the temperature in the refrigeration chamber rises, the high-temperature airflow naturally rises, and the low-temperature airflow in the storage chamber naturally sinks. This can effectively reduce the heat exchange between the refrigeration chamber and the storage chamber, reduce the temperature rise in the storage chamber during the defrosting process, eliminate the need for additional refrigeration operations, and save more energy.

[0100] The storage chamber 120 is used to store items to be refrigerated. To facilitate retrieval, multiple support shelves are provided in the storage chamber 120 for placing items.

[0101] The low-temperature airflow output from the refrigeration chamber 160 is discharged from the top and rear walls of the storage chamber 120 into the storage chamber 120.

[0102] In some embodiments, as shown in Figures 3 and 4, an inner liner is formed within the storage chamber 120. The inner liner includes a top wall 121, side walls, and a rear wall 122. In some embodiments, as shown in Figure 5, a bottom plate 111 is provided at the bottom of the equipment chamber 110. To reduce the exchange of cold air between the storage chamber 120 and the equipment chamber 110, a heat-insulating gap is formed between the top wall 121 and the bottom plate 111.

[0103] The connecting channel 130 is connected between the equipment base plate 111 and the inner liner top wall 121. The low-temperature airflow output from the refrigeration chamber 160 is delivered to the storage chamber 120 after passing through the connecting channel 130.

[0104] Specifically, as shown in Figure 4, an upper connecting port 112 is provided on the bottom plate 111 of the equipment, and a lower connecting port 1211 is provided on the top wall 121 of the inner liner. The top and bottom of the connecting channel 130 are connected to the upper connecting port 112 and the lower connecting port 1211, respectively.

[0105] In some embodiments, a sealing element is provided between the communication channel 130 and the upper communication port 112 and the lower communication port 1211 to prevent leakage of low-temperature airflow.

[0106] In some embodiments of this application, the second heat exchanger 400 is fixed to the bottom of the refrigeration chamber 160 by a support base 600, which is fixed to the equipment base plate 111.

[0107] In some embodiments, in order to improve the efficiency of airflow delivery, there are two connecting channels 130. Specifically, as shown in Figures 3 and 4, there is a first connecting channel 131 and a second connecting channel 132, and the number of upper connecting ports 112 and lower connecting ports 1211 is adapted to the number of connecting channels 130.

[0108] In this embodiment, 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. An air passage is formed on the support base 600, and an air passage gap is formed between the bottom of the second heat exchanger 400 and the air passage. The air passage gap 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.

[0109] A first air guide 140 is provided on the top of the storage chamber 120, and a second air guide 150 is provided on the rear wall of the storage chamber 120. Multiple air outlets (not shown in the figure) are formed on the first air guide 140 and the second air guide 150.

[0110] Specifically, the first air guide 140 is fixed on the top wall 121 of the inner liner, and the second air guide 150 is fixed on the rear wall 122 of the inner liner.

[0111] 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. The first connecting channel 131 is connected to the first air guide cavity, and the second connecting channel 132 is connected to the second air guide cavity.

[0112] The first air guide 140 extends along the depth direction of the storage chamber 120. The first air guide 140 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, and the air outlet is formed on the first air outlet section 142.

[0113] The second air guide 150 extends along the height direction of the storage chamber 120. The second air guide 150 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.

[0114] The second air guide section 151 is an inclined structure extending towards the rear wall 122 of the inner liner. The second air guide 150 and the second connecting channel 132 are connected by a connecting upright 1321 for connecting the second air guide 150 and the second connecting channel 132.

[0115] The first air guide 140 and the second air guide 150 are both sheet metal forming structures. The first air guide 140 and the second air guide 150 are fixed in the storage chamber 120 by fasteners such as fastening screws.

[0116] The air outlets on the first air guide 140 and the second air guide 150 are arranged in an array to ensure that the low-temperature airflow is uniformly delivered into the storage chamber 120.

[0117] In this embodiment, the equipment chamber 110 is located above the storage chamber 120. Since the temperature inside the equipment chamber 110 is higher and the temperature inside the storage chamber 120 is lower, the low-temperature airflow moves downward, which helps to reduce the heat exchange between the equipment chamber 110 and the storage chamber 120 and achieve efficient cooling.

[0118] In some embodiments of this application, as shown in Figures 9 and 10, the support base 600 is provided with two mounting surfaces 620, which are respectively located at both ends of the air passage section, and the bottom of the second heat exchanger 400 is supported on the two mounting surfaces 620 respectively.

[0119] In some embodiments of this application, a first water receiving tray 900 is also provided on the air passage, and the first water receiving tray 900 is located below the second heat exchanger 400.

[0120] Specifically, a first support surface 630 is formed on both sides of the air passage, and the first water receiving tray 900 is inclined under the action of the first support surface 630. The drain pipe is connected to the side with the lowest position of the first water receiving tray 900.

[0121] To limit the drain pipe, a downwardly extending drain section 640 is provided on the support base 600, and the drain pipe is connected inside the drain section 640. For example, as shown in FIG9, the drain section 640 has a receiving cavity structure for accommodating the drain pipe.

[0122] The bottom of the support base 600 has a through-hole 610, which is connected to the connecting channel 130.

[0123] 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. The second water receiving tray 800 and the first water receiving tray 900 are connected by a drain pipe.

[0124] The bottom plate of the second water receiving tray 800 is equipped with an evaporation pipe 910, which is connected between the output end of the compressor 200 and the first heat exchanger 300.

[0125] As shown in Figure 10, in some embodiments of this application, in order to further reduce heat transfer between the equipment chamber 110 and the storage chamber 120, a damper assembly 700 is provided between the equipment chamber 110 and the storage chamber 120.

[0126] The damper assembly 700 is used to control the opening and closing of the connecting channel 130. Specifically, when the refrigeration system is not performing refrigeration, the damper assembly 700 closes the connecting channel 130, isolating the equipment chamber 110 and the storage chamber 120, thereby further reducing the transfer of cold energy and improving the refrigeration and cold preservation effects.

[0127] In this embodiment, the opening and closing of the connecting channel 130 between the refrigeration chamber 160 and the storage chamber 120 is controlled by the damper assembly 700. During actual defrosting, the damper assembly 700 closes the connecting channel 130, and the air supply component next to the second heat exchanger 400 (e.g., the evaporator) is shut off. This prevents forced convection between the refrigeration chamber 160 and the storage chamber 120, effectively isolating heat exchange between them and reducing the temperature rise in the storage chamber during defrosting. In this embodiment, by using the damper assembly 700 to control the opening and closing of the connecting channel 130 between the refrigeration chamber 160 and the storage chamber 120, no additional refrigeration operation is required, thus avoiding additional energy consumption.

[0128] In some embodiments of this application, the air valve assembly 700 is disposed on the air passage 610.

[0129] Specifically, as shown in Figure 12, the air valve assembly 700 includes an air valve bracket 720, an air valve part 710, and a drive part 730, wherein the air valve bracket 720 is disposed on the air passage 610.

[0130] In some embodiments, as shown in FIG9, a mounting portion 650 is provided on the support base 600, and the mounting portion 650 is formed above the air passage 610.

[0131] In some embodiments, as shown in FIG10, the damper assembly 700 is disposed within the mounting portion 650. In this embodiment, the mounting portion 650 has a receiving cavity structure for accommodating the damper assembly 700.

[0132] In some embodiments, as shown in FIG12, the drive unit 730 is fixed on the air valve bracket 720, the air valve unit 710 is connected to the output end of the drive unit 730, and the drive unit 730 is used to control the air valve unit 710 to flip up and down along the target angle, thereby controlling the opening and closing of the air passage 610.

[0133] Specifically, 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, and the damper crossbar 721 and the damper upright 722 are used to limit the opening and closing position of the damper section 710.

[0134] In this embodiment, the valve crossbar 721 and the valve upright 722 are provided with reinforcing parts 723 (e.g., reinforcing ribs) at intervals to improve the structural strength of the valve support 720.

[0135] In some embodiments, as shown in Figures 13 and 16, when the air passage 610 is 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.

[0136] In some embodiments, as shown in Figures 14 and 17, when the air passage 610 is open, the drive unit 730 drives the air valve unit 710 to rotate until it contacts the air valve stand 722, thereby opening the air passage 610.

[0137] In some embodiments of this application, the refrigeration system can implement a defrosting process in addition to the refrigeration process. The defrosting process is implemented through the defrosting pipe 20 and the defrosting part 810 connected to the defrosting pipe 20.

[0138] The switching between the defrosting and cooling processes is achieved in the following way:

[0139] In some embodiments of this application, a first switch is provided between the first heat exchanger 300 and the compressor 200, and a second switch is provided on the defrosting pipeline 20. During the refrigeration program, the first switch is in the connected state and the second switch is in the disconnected state; during the defrosting program, the first switch is in the disconnected state and the second switch is in the connected state.

[0140] In some other embodiments, the defrosting line 20 is connected to the refrigeration line 10 via a solenoid valve 30. The solenoid valve 30 is a three-way solenoid valve 30. 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 line 20.

[0141] The two ends of the defrosting pipe 20 are connected to the output end of the compressor 200 and the input end of the second heat exchanger 400, respectively, and the defrosting unit 810 is connected in the first water receiving pan 900.

[0142] During the defrosting process, the high-temperature, high-pressure refrigerant output from the compressor 200 is introduced into the defrosting pipe 20, where it releases heat in the defrosting section 810 to defrost the first drip tray 900. During defrosting, the hot air from the compressor 200 first transfers heat to the first drip tray 900 through the defrosting optical path, causing the temperature of the first drip tray 900 to rise rapidly, ensuring smooth flow of defrost water without freezing.

[0143] The refrigerant output from the defrosting unit 810 passes through 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 has no electrical components, making it safe, energy-saving, and free from electrical safety hazards.

[0144] In addition, during the defrosting process, as the temperature inside the refrigeration chamber 160 rises, the air supply unit 500 is shut down to prevent heat from being transferred to the storage chamber 120.

[0145] In other words, during the cooling process, the efficiency of heat exchange (e.g., cooling) is improved by opening the air supply component 500 to force convection, and during defrosting, the heat exchange is reduced by closing the air supply component 500 to allow natural convection.

[0146] In embodiments without the damper assembly 700, the equipment chamber and the storage chamber are connected only by two connecting channels 130 for convection. During defrosting, 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. This helps to reduce heat exchange and avoid temperature changes.

[0147] In embodiments where the damper assembly 700 is provided, the damper assembly 700 can be closed during defrosting, thereby completely isolating the equipment chamber and the storage chamber and further reducing heat exchange.

[0148] In some embodiments, a cooling process is performed before defrosting to reduce the temperature of the storage chamber 120 to the lowest point within the fluctuation range, which can effectively shift the temperature recovery curve (e.g., range) of the equipment chamber 110 caused by high-temperature defrosting downward.

[0149] In some embodiments, after defrosting is completed, the cooling process is started. At this time, the air supply component 500 and the air valve assembly 700 remain closed. When the temperature of the cooling chamber 160 is lower than the temperature of the storage chamber 120, the air supply component 500 and the air valve assembly 700 are turned on to reduce the temperature rise of the storage chamber 120 caused by high-temperature defrosting.

[0150] In some other embodiments of this application, as shown in FIG18, a door frame is provided on the front side of the storage chamber 120, and a decondensation pipe 40 is provided inside the door frame, which is connected between the compressor 200 and the first heat exchanger 300. During the refrigeration process, the high-temperature and high-pressure refrigerant output from the compressor 200 releases some heat through the decondensation pipe 40 before entering the first heat exchanger 300 to release heat. The decondensation pipe 40 can melt the frost on the door frame, avoiding problems such as ice formation on the door frame and difficulty in opening the door.

[0151] The specific processes of the refrigeration and defrosting procedures are described below through specific embodiments.

[0152] The refrigeration process is shown in Figure 19: the air supply component 500 and the air valve assembly 700 are opened, the solenoid valve 30 opens the passage between the compressor 200 and the first heat exchanger 300, and cuts off the defrosting pipe 20 between the compressor 200 and the defrosting section 810. The refrigerant output from the compressor 200 is heat-exchanged by the first heat exchanger 300 and then transported to the second heat exchanger 400 in the refrigeration chamber 160 for heat exchange and cooling. Under the action of the air supply component 500, the low-temperature airflow formed after heat exchange with the refrigerant in the second heat exchanger 400 is output to the storage chamber 120 through the connecting channel 130, forcing convection with the storage chamber 120 to exchange heat and achieve efficient refrigeration.

[0153] The defrosting process is shown in Figure 20: the air supply component 500 and the air valve assembly 700 are closed, the solenoid valve 30 cuts off the passage between the compressor 200 and the first heat exchanger 300, and connects the defrosting pipe 20 between the compressor 200 and the defrosting section 810. The high-temperature refrigerant discharged by the compressor 200 first preheats the first water receiving pan 900 through the defrosting pipe 810, and then enters the second heat exchanger 400 to defrost and melt the frost on the surface of the evaporator, ensuring that the defrosting water droplets fall into the water receiving pan and are drained smoothly without being frozen.

[0154] In some embodiments of this application, as shown in Figures 7 and 8, the equipment chamber 110 is used to install the working components required for the operation of the refrigeration system, including a compressor 200, a first heat exchanger 300, and a second heat exchanger 400.

[0155] In some embodiments, as shown in FIG18, the equipment chamber 110 may further include a gas-liquid separator 70 and a throttling device 60, and the compressor 200, the first heat exchanger 300, the second heat exchanger 400, the gas-liquid separator 70 and the throttling device 60 are connected through the refrigeration pipeline 10.

[0156] In some embodiments, the first heat exchanger 300 is specifically a condenser connected to the output end of the compressor 200. After passing through the dryer filter 50 and the throttling device 60, the output end of the first heat exchanger 300 is connected to the second heat exchanger 400. The second heat exchanger 400 acts as an evaporator during the refrigeration process. The output end of the second heat exchanger 400 is connected to the gas-liquid separator 70, and the output end of the gas-liquid separator 70 is connected to the compressor 200.

[0157] In some embodiments, a damper assembly 700 is also provided in the communication channel 130, as shown in FIG20. During defrosting, the damper assembly 700 can be closed to completely isolate the equipment chamber and the storage chamber, further reducing heat exchange.

[0158] In this embodiment, in addition to the refrigeration process, the refrigeration system can also implement a defrosting process, which is achieved through the defrosting pipe 20 and the defrosting unit 810 connected to the defrosting pipe 20.

[0159] As shown in Figure 19, during the refrigeration process, the high-temperature and high-pressure refrigerant output from the compressor 200 is compressed by the condenser to form a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0160] An expansion valve is used to expand the high-temperature, high-pressure liquid refrigerant that has condensed in the condenser into a low-pressure liquid refrigerant.

[0161] The second heat exchanger 400 is used to evaporate the refrigerant that expands in the expansion valve and return the refrigerant gas in a low temperature and low pressure state to the compressor 200.

[0162] The second heat exchanger 400 is used to cool the items inside the housing 100 by utilizing the latent heat of refrigerant evaporation.

[0163] The switching between the defrosting and cooling processes is achieved in the following way:

[0164] In some embodiments of this application, a first switch is provided between the first heat exchanger 300 and the compressor 200, and a second switch is provided on the defrosting pipeline 20. During the refrigeration program, the first switch is in the connected state and the second switch is in the disconnected state; during the defrosting program, the first switch is in the disconnected state and the second switch is in the connected state.

[0165] In some other embodiments, the defrosting line 20 is connected to the refrigeration line 10 via a solenoid valve 30. The solenoid valve 30 is a three-way solenoid valve 30. During the refrigeration program, the solenoid valve 30 opens the passage between the compressor 200 and the first heat exchanger 300. As shown in FIG20, during the defrosting program, the solenoid valve 30 opens the passage between the compressor 200 and the defrosting line 20.

[0166] In some embodiments, the two ends of the defrosting pipe 20 are respectively connected to the output end of the compressor 200 and the input end of the second heat exchanger 400, and the defrosting part 810 is connected in the first water receiving pan 900.

[0167] During the defrosting process, the high-temperature and high-pressure refrigerant output by the compressor 200 is input into the defrosting pipe 20, where it releases heat in the defrosting section 810 to defrost the first water receiving pan 900. During defrosting, the hot air from the compressor 200 first transfers heat to the first water receiving pan 900 through the defrosting optical path, causing the temperature of the first water receiving pan 900 to rise rapidly, ensuring that the defrosting water flows smoothly without freezing.

[0168] The refrigerant output from the defrosting unit 810 passes through 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 has no electrical components, making it safe, energy-saving, and free from electrical safety hazards.

[0169] In some embodiments, during the defrosting process, the air supply unit 500 is shut down to prevent heat transfer into the storage chamber 120 as the temperature rises in the cooling chamber 160.

[0170] In other words, during the cooling process, the heat exchange (e.g., cooling) efficiency is improved by opening the air supply component 500 to force convection, and during defrosting, the heat exchange is reduced by closing the air supply component 500 to allow natural convection.

[0171] In some embodiments, the equipment chamber and the storage chamber are connected by only two connecting channels 130 for convection. During defrosting, 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.

[0172] In some embodiments, a cooling process is performed before defrosting to reduce the temperature of the storage chamber 120 to the lowest point within the fluctuation range, which can effectively shift the temperature recovery curve (e.g., range) of the equipment chamber 110 caused by high-temperature defrosting downward.

[0173] In some embodiments, after defrosting is completed, the cooling process is started. At this time, the air supply component 500 and the air valve assembly 700 remain closed. When the temperature of the cooling chamber 160 is lower than the temperature of the storage chamber 120, the air supply component 500 and the air valve assembly 700 are turned on to reduce the temperature rise of the storage chamber 120 caused by high-temperature defrosting.

[0174] The specific steps of the refrigeration and defrosting processes are described below with reference to Figures 19, 20, 21, and 22. In some embodiments, in order to control the switching between the refrigeration and defrosting processes and achieve intelligent control, the refrigeration equipment also includes a controller (not shown in the figures).

[0175] The controller is configured such that, under the refrigeration program, when the preset defrosting conditions are met, the air valve assembly 700 closes, and the refrigerant output from the compressor 200 passes through the defrosting pipeline 20, the defrosting section 810, and the second heat exchanger 400 before being returned to the compressor 200, so that the heat of the refrigerant in the defrosting section 810 is transferred to the first water receiving pan 900 to perform defrosting on the first water receiving pan 900.

[0176] Specifically, the controller 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.

[0177] In this embodiment, the controller detects the temperatures in the refrigeration compartment 160 and the storage chamber 120 in real time. When the preset defrosting conditions are met, the refrigeration system controls the defrosting pipeline to be in a connected state with the compressor 200. The high-temperature refrigerant discharged by the compressor 200 first preheats and raises the temperature of the first water receiving tray 900 rapidly through the defrosting pipe, and then enters the second heat exchanger 400 to defrost and melt the frost on the surface of the evaporator, ensuring that the defrosting water drops are discharged smoothly in the water receiving tray without being frozen. It has a high degree of intelligence, stable equipment operation, and is beneficial to reducing the overall size of the equipment and increasing the volume of the storage chamber.

[0178] In some embodiments, a first temperature detection component (not shown in the figure) is provided in the first water receiving tray 900. The first temperature detection component is signal-connected to the controller, and the first temperature detection component is used to detect the temperature T in the first water receiving tray 900.

[0179] In some embodiments, the defrosting conditions include judging 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.

[0180] In some embodiments, the defrosting conditions include judging the detected temperature of the first temperature detection component. When the detected temperature of the first temperature detection component is lower than the first preset temperature T1, the defrosting program is started.

[0181] In some embodiments, the operation cycle of the refrigeration program can be preset, that is, every n hours, the controller starts the defrosting program once.

[0182] In some embodiments, the operation cycle of other working components can also be used as the start condition of the defrosting program. For example, for the working cycle of the compressor 200, every time the compressor 200 works for n hours, the defrosting program is started once.

[0183] In some embodiments, the defrosting conditions can also be determined by the detected temperature of the first temperature detection component.

[0184] Specifically, when the detected temperature of the first temperature detection component is lower than the first preset temperature T1, the defrosting program is started.

[0185] The first preset temperature T1 is also preset by the program. For example, when the detected temperature T of the first temperature detection component < T1, the defrosting condition is started.

[0186] The defrosting conditions can be one of the two conditions mentioned above, or both conditions can be met simultaneously.

[0187] If the refrigeration system is shut down before the defrosting process starts, and the temperature of the storage chamber 120 is already high, the high temperature defrosting will inevitably cause the temperature of the storage chamber 120 to rise even higher.

[0188] To avoid the above problems, in some embodiments, a second temperature detection element (not shown in the figure) is provided in the storage chamber 120. The second temperature detection element is connected to the controller signal and is used to detect the temperature t in the storage chamber 120.

[0189] Specifically, before starting the defrosting program, the controller determines the detection temperature of the second temperature sensor. When the detection temperature of the second temperature sensor is lower than the first preset temperature T1, the defrosting program is started.

[0190] In other words, before the defrosting program is started, the cooling process is ensured to be in the open state, so that the temperature of the storage chamber 120 drops to the lowest point within the fluctuation range, which can effectively shift the temperature rise curve (e.g., range) of the storage chamber 120 caused by high-temperature defrosting downward.

[0191] During the defrosting process, the first temperature sensor detects the temperature in the first water tray 900 in real time. When the temperature detected by the first temperature sensor is greater than the second preset temperature T2, the controller controls the solenoid valve 30 to connect the compressor 200 with the refrigeration pipe 10, the defrosting process is stopped, and the refrigeration process is started.

[0192] In some embodiments, when the cooling program starts, the damper assembly 700 and the air supply component 500 are in a closed 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.

[0193] In some embodiments, when the detected temperature of the first temperature sensor is greater than or equal to the detected temperature of the second temperature sensor, the air valve assembly 700 opens to deliver the low-temperature airflow in the refrigeration chamber 160 to the storage chamber 120.

[0194] In some embodiments, as shown in Figures 19 and 22, before the cooling program is started...

[0195] S10: Monitor whether the detection temperature of the second temperature sensor is greater than the second preset temperature T2.

[0196] S30: The second temperature detection element detects the temperature inside the storage chamber 120. When the detected temperature of the second temperature detection element is greater than the second preset temperature T2 (for example, T2 is the upper limit of the temperature inside the storage chamber 120), the compressor 200, the air valve assembly 700 and the air supply component 500 are turned on, and the cooling program is started; otherwise, the cooling program is not started (S20), where T1 < T2.

[0197] S40: Determine whether the detection temperature of the second temperature sensor is lower than the third preset temperature T3.

[0198] S50: When the detected temperature of the second temperature sensor is lower than the third preset temperature T3 (for example, T3 is the lower limit of the temperature inside the storage chamber 120), the compressor 200, the air valve assembly 700 and the air supply component 500 are shut down, wherein T3 < T2.

[0199] The specific on / off process of the defrosting procedure will be described in detail below with reference to Figures 20 and 21:

[0200] Refrigeration equipment cools down under the action of a refrigeration process.

[0201] The cooling program is intermittently switched on and off based on the temperature inside the storage chamber 120.

[0202] S1: Determine whether the defrosting conditions have been met.

[0203] S2: If the defrosting conditions are not met, maintain the original shutdown state or cooling program state.

[0204] S3: When the defrosting conditions are met (e.g., time conditions and / or temperature conditions), determine whether the refrigeration program is in operation. 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.

[0205] S4: If the cooling program is off, turn it on first to preheat the compressor to ensure defrosting effect.

[0206] 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.

[0207] S5: Determine whether the measured temperature of the second temperature sensor is less than the first preset temperature T1.

[0208] S6: 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 controlled by the solenoid valve 30 and transported along the defrosting pipeline 20. It first enters the defrosting section 810, preheats the first water receiving pan 900, so that the defrosting water flowing through it can be discharged smoothly, and the ice blocks can be melted smoothly 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.

[0209] S7: During the defrosting process, the first temperature sensor detects the temperature in the first water tray 900 in real time. When the temperature detected by the first temperature sensor is greater than the second preset temperature T2, the controller controls the solenoid valve 30 to connect the compressor 200 with the refrigeration pipe 10, the defrosting process is stopped, and the refrigeration process is started (see S8).

[0210] 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.

[0211] S9: When the temperature detected by the first temperature sensor is greater than or equal to the temperature detected by the second temperature sensor, the air valve assembly 700 opens to deliver the low-temperature airflow in the refrigeration chamber 160 to the storage chamber 120 for refrigeration (see S10).

[0212] During the refrigeration process, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 200 is transported along the refrigeration pipeline 10 under the control of the solenoid valve 30. After entering the first heat exchanger 300, it is transported to the second heat exchanger 400. In the refrigeration chamber 160 of the second heat exchanger 400, strong convection refrigeration is carried out with the storage chamber. The fan continuously transports the low-temperature airflow in the refrigeration chamber 160 to the storage chamber 120, so that the temperature of the storage chamber 120 gradually decreases until the temperature detected by the second temperature sensor is lower than the third preset temperature T3. Then, the system switches to a shutdown and natural convection state (for example, the compressor 200 stops and the air supply component 500 stops). The temperature of the storage chamber 120 gradually rises until the temperature detected by the second temperature sensor is greater than the second preset temperature value T2. Then, the refrigeration process is restarted. The refrigeration cycle repeats in this way.

[0213] In some other embodiments of this application, a door frame is provided on the front side of the storage chamber 120, and a decondensation pipe 40 is provided inside the door frame. The decondensation pipe 40 is connected between the compressor 200 and the first heat exchanger 300. During the refrigeration process, the high-temperature and high-pressure refrigerant output from the compressor 200 releases some heat through the decondensation pipe 40 before entering the first heat exchanger 300 to release heat. The decondensation pipe 40 can melt the frost on the door frame, avoiding problems such as ice formation on the door frame and difficulty in opening the door.

[0214] In some embodiments, as shown in FIG5, a cooling chamber 160 is provided in the equipment chamber 110. The cooling chamber 160 is independently provided relative to the equipment chamber 110. At least one communication channel 130 is provided between the cooling chamber 160 and the storage chamber 120, as shown in FIG15.

[0215] Specifically, the compressor 200 and the first heat exchanger 300 are installed inside the equipment chamber 110 and located outside the refrigeration chamber 160.

[0216] The second heat exchanger 400 is installed in the refrigeration chamber 160. An air supply component 500 is installed on the side of the second heat exchanger 400. The air supply component 500 is used to transport the airflow after heat exchange by the second heat exchanger 400 to the storage chamber 120 through the connecting channel 130.

[0217] The storage chamber 120 is used to store items to be refrigerated. To facilitate retrieval, multiple support shelves are provided in the storage chamber 120 for placing items.

[0218] The low-temperature airflow output from the refrigeration chamber 160 is discharged from the top and rear walls of the storage chamber 120 into the storage chamber 120.

[0219] An inner liner is formed inside the storage chamber 120. The inner liner includes an inner liner top wall 121, an inner liner side wall, and an inner liner rear wall 122. An equipment base plate 111 is provided at the bottom of the equipment chamber 110. In order to reduce the exchange of cold energy between the storage chamber 120 and the equipment chamber 110, a heat insulation gap is formed between the inner liner top wall 121 and the equipment base plate 111.

[0220] The connecting channel 130 is connected between the equipment base plate 111 and the inner liner top wall 121.

[0221] The low-temperature airflow output from the refrigeration chamber 160 is transported to the storage chamber 120 after passing through the connecting channel 130.

[0222] In some embodiments, an upper communication port 112 is provided on the bottom plate 111 of the device, and a lower communication port 1211 is provided on the top wall 121 of the inner liner. The top and bottom of the communication channel 130 are connected to the upper communication port 112 and the lower communication port 1211, respectively.

[0223] 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.

[0224] In some embodiments of this application, the second heat exchanger 400 is fixed to the bottom of the refrigeration chamber 160 by a support base 600, which is fixed to the equipment base plate 111.

[0225] As shown in Figure 9, in some embodiments of this application, the support base 600 is provided with two mounting surfaces 620, which are located at both ends of the air passage, and the bottom of the second heat exchanger 400 is supported on the two mounting surfaces 620 respectively.

[0226] In some embodiments of this application, as shown in FIG11, a first water receiving tray 900 is also provided on the air passage, and the first water receiving tray 900 is located below the second heat exchanger 400.

[0227] Specifically, a first support surface 630 is formed on both sides of the air passage, and the first water receiving tray 900 is inclined under the action of the first support surface 630. The drain pipe is connected to the side with the lowest position of the first water receiving tray 900.

[0228] In some embodiments, in order to limit the drain pipe, a downwardly extending drain portion 640 is also provided on the support base 600, and the drain pipe is connected in the drain portion 640.

[0229] The bottom of the support base 600 has a through-hole 610, which is connected to the connecting channel 130.

[0230] 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. The second water receiving tray 800 and the first water receiving tray are connected by a drain pipe.

[0231] The bottom plate of the second water receiving tray 800 is equipped with an evaporation pipe 910, which is connected between the output end of the compressor 200 and the first heat exchanger 300.

[0232] Referring to Figures 7 to 9, in some embodiments of this application, the damper assembly 700 is disposed between the equipment chamber 110 and the storage chamber 120 to further reduce heat transfer between the equipment chamber 110 and the storage chamber 120.

[0233] The damper assembly 700 is used to control the opening and closing of the connecting channel 130. When the refrigeration system is not performing refrigeration, the damper assembly 700 closes the connecting channel 130, isolating the equipment chamber 110 and the storage chamber 120, which can further reduce the transfer of cold energy and improve the refrigeration and cold preservation effect.

[0234] Specifically, in some embodiments of this application, the air valve assembly 700 is disposed on the air passage 610.

[0235] In some embodiments, as shown in FIG12, the air valve assembly 700 includes an air valve bracket 720, an air valve part 710, and a drive part 730, wherein the air valve bracket 720 is disposed on the air passage 610.

[0236] Specifically, a mounting part 650 is provided on the support base 600, and the mounting part 650 is formed above the air passage 610.

[0237] The damper assembly 700 is disposed within the mounting portion 650. In this embodiment, the mounting portion 650 has a receiving cavity structure for accommodating the damper assembly 700.

[0238] The drive unit 730 is fixed on the air valve bracket 720. The air valve 710 is connected to the output end of the drive unit 730. The drive unit 730 is used to control the air valve 710 to flip up and down along the target angle, thereby controlling the opening and closing of the air passage 610.

[0239] 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.

[0240] The valve crossbar 721 and the valve upright 722 are provided with reinforcing parts 723 (e.g., reinforcing ribs) at intervals to improve the structural strength of the valve support 720.

[0241] In some embodiments, as shown in FIG13, when the air passage 610 is 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.

[0242] In some embodiments, as shown in FIG14, when the air passage 610 is open, the drive unit 730 drives the air valve unit 710 to rotate until it contacts the air valve stand 722, thereby opening the air passage 610.

[0243] This application also proposes a refrigeration device, including a housing 100 and a refrigeration system. The housing 100 includes an equipment chamber 110 and a storage chamber 120. The equipment chamber 110 is located above the storage chamber 120, which helps to increase the effective volume of the storage chamber 120 and store more items.

[0244] The equipment chamber 110 is equipped with a compressor 200, a first heat exchanger 300, a second heat exchanger 400, a gas-liquid separator 70, and a throttling device 60, all connected by a refrigeration pipe 10.

[0245] The first heat exchanger 300 is specifically a condenser, which is connected to the output end of the compressor 200. After passing through the dryer filter 50 and the throttling device 60, the output end of the first heat exchanger 300 is connected to the second heat exchanger 400. The second heat exchanger 400 acts as an evaporator during the refrigeration process. The output end of the second heat exchanger 400 is connected to the gas-liquid separator 70, and the output end of the gas-liquid separator 70 is connected to the compressor 200.

[0246] The connecting channel 130 is also equipped with a damper assembly 700. During defrosting, the damper assembly 700 can be closed to completely isolate the equipment chamber and the storage chamber, further reducing heat exchange.

[0247] The refrigeration system includes a refrigeration circuit and a defrosting circuit. The refrigeration circuit includes a compressor 200, a first heat exchanger 300, and a second heat exchanger 400 connected by a refrigeration pipe 10. The defrosting circuit includes a defrosting pipe 20 connected in parallel with the first heat exchanger 300. An independent refrigeration chamber 160 is provided in the equipment chamber 110. The second heat exchanger 400 is located in the refrigeration chamber 160. A first water receiving tray 900 is provided below the second heat exchanger 400. A defrosting part 810 is provided on the defrosting pipe 20 and is connected to the first water receiving tray 900.

[0248] When the preset defrosting conditions are met, the controller controls the air valve assembly 700 to close and opens the defrosting circuit so that the heat of the refrigerant in the defrosting section 810 is transferred to the first water receiving pan 900 to perform defrosting on the first water receiving pan 900.

[0249] In some embodiments of this application, as shown in Figures 3 and 4, in order to improve the efficiency of airflow delivery, there are two connecting channels 130, including a first connecting channel 131 and a second connecting channel 132, and the number of upper connecting ports 112 and lower connecting ports 1211 is adapted to the number of connecting channels 130.

[0250] 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.

[0251] An air passage is formed on the support base 600, and an air passage gap is formed between the bottom of the second heat exchanger 400 and the air passage, which connects the first connecting channel 131 and the second connecting channel 132.

[0252] So that the low-temperature airflow output by the air supply component 500 is simultaneously delivered from the first connecting channel 131 and the second connecting channel 132 to the storage chamber 120.

[0253] The top of the storage chamber 120 is provided with a first air guide 140, and the rear wall of the storage chamber 120 is provided with a second air guide 150. Multiple air outlets are formed on the first air guide 140 and the second air guide 150.

[0254] Specifically, the first air guide 140 is fixed on the top wall 121 of the inner liner, and the second air guide 150 is fixed on the rear wall 122 of the inner liner.

[0255] 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. The first connecting channel 131 is connected to the first air guide cavity, and the second connecting channel 132 is connected to the second air guide cavity.

[0256] The first air guide 140 extends along the depth direction of the storage chamber 120. The first air guide 140 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, and the air outlet is formed on the first air outlet section 142.

[0257] The second air guide 150 extends along the height direction of the storage chamber 120. The second air guide 150 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.

[0258] The second air guide section 151 is an inclined structure extending towards the rear wall 122 of the inner liner. The second air guide 150 and the second connecting channel 132 are connected by a connecting upright 1321 for connecting the second air guide 150 and the second connecting channel 132.

[0259] The first air guide 140 and the second air guide 150 are both sheet metal forming structures. The first air guide 140 and the second air guide 150 are fixed in the storage chamber 120 by fasteners such as fastening screws.

[0260] The air outlets on the first air guide 140 and the second air guide 150 are arranged in an array to ensure that the low-temperature airflow is uniformly delivered into the storage chamber 120.

[0261] The equipment chamber 110 is located above the storage chamber 120. Since the temperature inside the equipment chamber 110 is higher and the temperature inside the storage chamber 120 is lower, the low-temperature airflow moves downward, which helps to reduce the heat exchange between the equipment chamber 110 and the storage chamber 120 and achieve efficient cooling.

[0262] In the refrigeration process, the air supply component 500 and the air valve assembly 700 are opened, the solenoid valve 30 opens the passage between the compressor 200 and the first heat exchanger 300, and cuts off the defrosting pipe 20 between the compressor 200 and the defrosting section 810. The refrigerant output from the compressor 200 is heat-exchanged by the first heat exchanger 300 and then transported to the second heat exchanger 400 in the refrigeration chamber 160 for heat exchange and refrigeration. Under the action of the air supply component 500, the low-temperature airflow formed after heat exchange with the refrigerant in the second heat exchanger 400 is output to the storage chamber 120 through the connecting channel 130, forcing convection with the storage chamber 120 to exchange heat and achieve efficient refrigeration.

[0263] For example, in some embodiments, the defrosting line 20 is connected to the refrigeration line 10 via a solenoid valve 30, which is a three-way solenoid valve 30. Under the refrigeration program, the solenoid valve 30 opens the passage between the compressor 200 and the first heat exchanger 300.

[0264] In the above refrigeration process, the heat exchange efficiency is significantly improved by forcing convection between the air supply component 500 and the storage chamber 120 through the opening of the air supply component 500.

[0265] During the defrosting process, the air supply component 500 and the air valve assembly 700 are closed, the solenoid valve 30 cuts off the passage between the compressor 200 and the first heat exchanger 300, and connects the defrosting pipe 20 between the compressor 200 and the defrosting section 810. The high-temperature refrigerant discharged by the compressor 200 first preheats the first water receiving pan 900 through the defrosting pipe 810, and then enters the second heat exchanger 400 to defrost and melt the frost on the surface of the evaporator, ensuring that the defrosting water droplets fall into the water receiving pan and are drained smoothly without being frozen.

[0266] For example, in some embodiments, the solenoid valve 30 opens the passage between the compressor 200 and the defrost line 20, the two ends of the defrost line 20 being connected to the output end of the compressor 200 and the input end of the second heat exchanger 400, respectively, and the defrost unit 810 being connected in the first water receiving pan 900.

[0267] In the defrosting process described above, the high-temperature, high-pressure refrigerant output from the compressor 200 is introduced into the defrosting pipe 20, where it releases heat in the defrosting section 810 to defrost the first drip tray 900. During defrosting, the hot air from the compressor 200 first transfers heat to the first drip tray 900 through the defrosting optical path, causing the temperature of the first drip tray 900 to rise rapidly, ensuring that the defrosting water flows smoothly and does not freeze.

[0268] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0269] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A refrigeration device, comprising: a cabinet, comprising: a storage chamber; and a device chamber located above the storage chamber; a refrigeration compartment arranged in the device chamber, at least one communication passage being 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 and located outside the refrigeration compartment; a second heat exchanger arranged in the refrigeration compartment, the compressor, the first heat exchanger and the second heat exchanger being connected in sequence through refrigeration pipelines; and an air supply member arranged beside the second heat exchanger, the air supply member being used to deliver air flow after heat exchange of the second heat exchanger to the storage chamber through the communication passage. 2.The refrigeration device according to claim 1, wherein the second heat exchanger is fixed to the bottom of the refrigeration compartment through a support base, a wind passing portion is formed on the support base, and a wind passing gap is formed between the bottom of the second heat exchanger and the wind passing portion. 3.The refrigeration device according to claim 2, wherein a first water collecting tray is further arranged on the wind passing portion, the first water collecting tray is located below the second heat exchanger, a second water collecting tray is further arranged in the device chamber, and the second water collecting tray and the first water collecting tray are connected through a drain pipe. 4.The refrigeration device according to claim 3, wherein first support surfaces are formed on both sides of the wind passing portion, the first water collecting tray is arranged obliquely under the action of the first support surfaces, and the drain pipe is connected to the side of the first water collecting tray with the lowest position. 5.The refrigeration device according to claim 2, wherein a wind passing hole is formed through the bottom of the support base, and the wind passing hole is communicated with the communication passage. 6.The refrigeration device according to claim 1, wherein the communication passage comprises a first communication passage and a second communication passage, a first air guide member is arranged on the top of the storage chamber, a second air guide member is arranged on the rear wall of the storage chamber, a plurality of air outlet holes are dispersedly formed on the first air guide member and the second air guide member, a first air guide cavity is formed between the first air guide member and the storage chamber, a second air guide cavity is formed between the second air guide member and the storage chamber, the first communication passage is communicated with the first air guide cavity, and the second communication passage is communicated with the second air guide cavity. 7.The refrigeration device according to claim 6, wherein the first air guide member extends along the depth direction of the storage chamber, the first air guide member comprises a first air guide section and a first air outlet section, the first air guide section is located between the first communication passage and the first air outlet section, and the air outlet holes are formed on the first air outlet section. 8.The refrigeration device according to claim 6, wherein the second air guide member extends along the height direction of the storage chamber, the second air guide member comprises a second air guide section and a second air outlet section, the second air guide section is located between the second communication passage and the second air outlet section, and the air outlet holes are located on the second air outlet section.

9. The refrigeration appliance of claim 3, wherein the bottom tray of the second water pan is provided with an evaporation line connected between the output of the compressor and the first heat exchanger.

10. The refrigeration appliance of claim 1, wherein the refrigeration system further comprises a gas-liquid separator provided between the compressor and the second heat exchanger, and a throttling device provided between the first heat exchanger and the second heat exchanger.

11. A refrigeration appliance, comprising: a cabinet, including: an appliance chamber; and a storage chamber, the appliance chamber being located above the storage chamber; a refrigeration compartment provided in the appliance chamber, at least one communication passage being provided between the refrigeration compartment and the storage chamber; an air valve assembly provided in the communication passage for controlling opening and closing of the communication passage; a refrigeration system, including: a compressor provided in the appliance chamber; a first heat exchanger provided in the appliance chamber and located outside the refrigeration compartment; a second heat exchanger provided in the refrigeration compartment, the compressor, the first heat exchanger and the second heat exchanger being connected in sequence by refrigeration lines; an air supply member provided beside the second heat exchanger.

12. The refrigeration appliance of claim 11, wherein the second heat exchanger is fixed in the refrigeration compartment by a supporting base, a bottom of the supporting base being formed with a through air passing hole, the air passing hole being in communication with the communication passage, and the air valve assembly being provided on the air passing hole.

13. The refrigeration appliance of claim 2, wherein the air valve assembly includes an air valve bracket, an air valve part and a driving part, the air valve bracket being provided on the air passing hole, the driving part being connected to the air valve bracket, and the air valve part being connected to an output end of the driving part for controlling opening and closing of the air passing hole.

14. The refrigeration appliance of claim 13, wherein the air valve bracket includes an air valve horizontal bracket and an air valve vertical bracket provided perpendicularly to each other, the air valve horizontal bracket being fixed above the air passing hole, and the air valve horizontal bracket and the air valve vertical bracket being respectively used for limiting opening and closing positions of the air valve part.

15. The refrigeration appliance of claim 12, wherein the communication passage includes a first communication passage and a second communication passage, the air passing hole includes a first air passing hole and a second air passing hole in communication with the first communication passage and the second communication passage respectively, and the supporting base is formed with an air passing part thereon, a bottom of the second heat exchanger and the air passing part forming an air passing gap therebetween, the first air passing hole and the second air passing hole being respectively located on two sides of the air passing gap.

16. The refrigeration appliance of claim 15, wherein the air passing part is further provided with a first water pan thereon, the first water pan being located below the second heat exchanger, and the appliance chamber is further provided with a second water pan, the second water pan and the first water pan being connected by a drain pipe.

17. The refrigeration device of claim 16, wherein two sides of the overwind portion are formed with first support surfaces, the first water pan is arranged to be inclined under the action of the first support surfaces, and the drain pipe is connected to a side of the first water pan at which the first water pan is lowest.

18. The refrigeration device of claim 11, wherein a bottom of the device chamber is formed with a device bottom plate, an inner container is formed in the storage chamber, a heat insulation gap is formed between a top wall of the inner container and the device bottom plate, and the communication passage is connected between the device bottom plate and the top wall of the inner container.

19. The refrigeration device of claim 11, wherein a back side of the device chamber is provided with heat dissipation holes for realizing air flow exchange between the device chamber and the outside.

20. The refrigeration device of claim 16, wherein a bottom of the second water pan is provided with an evaporation pipeline, and the evaporation pipeline is connected between an output end of the compressor and the first heat exchanger.

21. A refrigeration device, comprising: a cabinet including a refrigeration chamber and a storage chamber; a communication passage arranged between the refrigeration chamber and the storage chamber; a wind valve assembly arranged in the cabinet for controlling opening and closing of the communication passage; a refrigeration system arranged in the cabinet, the refrigeration system comprising: a refrigeration pipeline for sequentially connecting a compressor, a first heat exchanger, and a second heat exchanger; the second heat exchanger is arranged in the refrigeration chamber, and a first water pan is arranged below the second heat exchanger; 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; an evaporation pipeline arranged on the defrosting pipeline, the defrosting pipeline is connected in the first water pan; and a controller configured to: in a refrigeration program, when a preset defrosting condition is met, the wind valve assembly is closed, refrigerant output from the compressor passes through the defrosting pipeline, the defrosting portion, and the second heat exchanger, and is fed back into the compressor, so that heat of the refrigerant in the defrosting portion is transmitted to the first water pan.

22. The refrigeration device of claim 21, wherein the defrosting pipeline is connected to the refrigeration pipeline through a solenoid valve, in the refrigeration program, the solenoid valve opens a passage between the compressor and the first heat exchanger; in the defrosting program, the solenoid valve opens a passage between the compressor and the defrosting pipeline.

23. The refrigeration device of claim 21, wherein the first water pan is provided with a first temperature detection member for detecting a temperature in the first water pan; the defrosting condition includes 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, and / or the defrosting condition includes judging a detection temperature of the first temperature detection member, when the detection temperature of the first temperature detection member is lower than a first preset temperature T1, the defrosting program is started.

24. The refrigeration device of claim 23, wherein a second temperature detecting member is arranged in the storage chamber to detect a temperature in the storage chamber; before starting the defrosting program, the controller determines the temperature detected by the second temperature detecting member, and when the temperature detected by the second temperature detecting member is lower than a first preset temperature T1, the defrosting program is started.

25. The refrigeration device of claim 24, wherein during the defrosting program, the first temperature detecting member detects the temperature in the first water pan in real time, and when the temperature detected by the first temperature detecting member is greater than a second preset temperature T2, the controller controls the electromagnetic valve to connect the compressor with the refrigeration circuit, the defrosting program is stopped, and the refrigeration program is started; when the temperature detected by the first temperature detecting member is greater than the temperature detected by the second temperature detecting member, the air valve assembly is opened.

26. The refrigeration device of claim 24, wherein a blowing member is further arranged in the refrigeration chamber to deliver the airflow after being exchanged by the second heat exchanger to the storage chamber through the communication passage; the blowing member is synchronously opened and closed with the air valve assembly. T1 < T2; 27. The refrigeration device of claim 26, wherein before the refrigeration program is started, the second temperature detecting member detects the temperature in the storage chamber, and when the detected temperature of the second temperature detecting member is greater than a second preset temperature T2, the compressor, the air valve assembly and the air feeding member are started, and the refrigeration program is started; otherwise, the refrigeration program is not started, wherein, when the temperature detected by the second temperature detecting member is lower than a third preset temperature T3, the compressor, the air valve assembly and the blowing member are stopped, wherein T3 < T2.

28. The refrigeration device of claim 21, wherein the second heat exchanger is fixed to the bottom of the refrigeration chamber by a supporting base, and a bottom of the supporting base is formed with a wind passing hole matched with the position of the communication passage; 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 the output end of the driving part to control the opening and closing of the wind passing hole.

29. The refrigeration device of claim 28, wherein a second water pan is further arranged outside the refrigeration chamber, the second water pan and the first water pan are connected by a drain pipe, and an evaporation circuit is arranged at the bottom of the second water pan, and the evaporation circuit is connected between the output end of the compressor and the first heat exchanger.

30. A refrigeration device, comprising: a cabinet comprising a refrigeration chamber and a storage chamber; a communication passage arranged between the refrigeration chamber and the storage chamber; an air valve assembly arranged in the cabinet to control the opening and closing of the communication passage; a refrigeration system comprising: a refrigeration circuit comprising: a compressor, a first heat exchanger and a second heat exchanger connected by a refrigeration circuit; a first water pan arranged below the second heat exchanger; and a defrosting circuit comprising: a defrosting circuit for being connected in parallel with the first heat exchanger, and a defrosting part arranged on the defrosting circuit, and the defrosting part is connected in the first water pan; a controller configured to: when a preset defrosting condition is met, the air valve assembly is closed, the defrosting circuit is started to make the heat of the refrigerant in the defrosting part transferred to the first water pan to defrost the first water pan. ​

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