Refrigeration equipment

Abstract

The utility model relates to refrigeration equipment which comprises a box body and a refrigeration system, and the box body comprises an equipment cavity and a storage cavity; the refrigerating system is arranged in the equipment cavity and comprises a refrigerating pipeline and a defrosting pipeline, a compressor, a first heat exchanger and a second heat exchanger are sequentially connected to the refrigerating pipeline, and the two ends of the defrosting pipeline are connected with the output end of the compressor and the input end of the second heat exchanger correspondingly; wherein a defrosting part is arranged on the defrosting pipeline, a first water receiving disc is arranged below the second heat exchanger, and the defrosting part is connected into the first water receiving disc; in a defrosting procedure, a high-temperature refrigerant discharged by a compressor firstly preheats and heats the first water pan quickly through a defrosting pipe, and then enters a second heat exchanger to defrost and melt frost on the surface of an evaporator, so that defrosting water drops drop in the water pan and are discharged smoothly without being frozen; on the premise that the defrosting requirement is met, the overall size of the refrigeration equipment can be reduced, the overall size of the refrigeration equipment can be reduced, and power consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and in particular relates to a refrigeration device. Background Art

[0002] Refrigerators are essential refrigeration equipment in daily life. Refrigerators usually include a cabinet and a door. A storage chamber is formed in the cabinet to place items that need to be refrigerated and stored, and the storage chamber is opened and closed through the door to facilitate users to store and retrieve items.

[0003] A refrigerator lowers the temperature inside the box by transferring internal heat to the outside. In existing air-cooled refrigerators, the evaporator is generally arranged in an equipment chamber, and the equipment chamber is arranged at the bottom of the refrigerator. When the evaporator and the water tray are defrosted, the temperature in the equipment chamber rises, which is easy to cause the temperature of the storage chamber to rise through convection, heat conduction, etc., affecting the refrigeration effect of the storage chamber and the quality of the items in the storage chamber.

[0004] In order to avoid temperature rise in the storage chamber during the defrosting process, a dual refrigeration system is generally adopted in the prior art. When 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 is high, the energy consumption is high, and the energy saving effect is poor. Summary of the invention

[0005] The purpose of the utility model is to provide a refrigeration device to solve the problems existing in the prior art, such as strong convection and heat conduction between the device chamber and the storage chamber, the temperature in the device chamber rises during the defrosting process, causing the temperature in the storage chamber to rise again, affecting the storage effect of the storage chamber, and the large size of the dual refrigeration system equipment, high power consumption, and poor energy-saving effect.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a refrigeration device, which comprises:

[0008] A box body, which includes an equipment chamber and a storage chamber;

[0009] A refrigeration system is arranged in the equipment chamber, the refrigeration system comprises a refrigeration pipeline and a defrost pipeline, the refrigeration pipeline is sequentially connected with a compressor, a first heat exchanger and a second heat exchanger, and two ends of the defrost pipeline are respectively connected with an output end of the compressor and an input end of the second heat exchanger;

[0010] Wherein, a defrost part is arranged on the defrost pipeline, a first water receiving pan is arranged below the second heat exchanger, and the defrost part is connected to the first water receiving pan.

[0011] In some embodiments of the present application, a first switch portion is arranged between the first heat exchanger and the compressor, and a second switch portion is arranged on the defrost pipeline. In a refrigeration program, the first switch portion is in a connected state, and the second switch portion is in a disconnected state; in a defrost program, the first switch portion is in a disconnected state, and the second switch portion is in a connected state.

[0012] In some embodiments of the present application, the defrost pipeline is connected to the refrigeration pipeline through a solenoid valve, and the solenoid valve is a three-way solenoid valve. Under the refrigeration program, the solenoid valve opens the passage between the compressor and the first heat exchanger; under the defrost program, the solenoid valve opens the passage between the compressor and the defrost pipeline.

[0013] In some embodiments of the present application, a second water receiving pan is further provided in the equipment chamber, the first water receiving pan and the second water receiving pan are connected by a drain pipe, an evaporation tube is also provided between the compressor and the first heat exchanger, and the evaporation tube is provided in the second water receiving pan for evaporating the water in the second water receiving pan.

[0014] In some embodiments of the present application, a door frame portion is provided at the front side of the storage chamber, a dew removal pipe is provided inside the door frame portion, and the dew removal pipe is connected between the compressor and the first heat exchanger.

[0015] In some embodiments of the present application, a drying filter and a throttling device are further provided between the first heat exchanger and the second heat exchanger, and a gas-liquid separator is further provided between the second heat exchanger and the compressor, and the drying filter, the throttling device and the gas-liquid separator are all installed in the equipment chamber.

[0016] In some embodiments of the present application, a refrigeration chamber is provided in the equipment chamber, at least one connecting channel is provided between the refrigeration chamber and the storage chamber, the second heat exchanger and the first water receiving pan are provided in the refrigeration chamber, and an air supply member is provided beside the second heat exchanger, and the air supply member is used to transport the airflow after heat exchange in the second heat exchanger into the storage chamber through the connecting channel.

[0017] In some embodiments of the present application, the second heat exchanger is fixed to the bottom of the refrigeration compartment through a support base, an airflow recess is formed on the support base, an airflow gap is formed between the bottom of the second heat exchanger and the airflow recess, and a penetrating airflow hole is formed at the bottom of the support base, and the airflow hole is connected to the connecting channel.

[0018] In some embodiments of the present application, first supporting surfaces are formed on both sides of the air passage recess, the first water receiving tray is tilted under the action of the first supporting surface, and the drain pipe is connected to the lowest side of the first water receiving tray.

[0019] In some embodiments of the present application, an equipment bottom plate is formed at the bottom of the equipment chamber, an inner liner is formed in the storage chamber, an insulating gap is formed between the top wall of the inner liner and the equipment bottom plate, and the connecting channel is connected between the equipment bottom plate and the top wall of the inner liner.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] The refrigeration system of the refrigeration equipment involved in the present application includes a refrigeration process and a defrosting process. In the refrigeration process, the refrigeration pipeline between the compressor and the first heat exchanger is in a connected state, the defrosting pipeline and the compressor are in a disconnected state, and the second heat exchanger acts as an evaporator to refrigerate the storage chamber; the pipeline connection of the refrigeration system is simple, which is conducive to reducing the overall size of the equipment, increasing the volume of the storage chamber, and saving energy consumption while meeting the defrosting requirements;

[0022] Under the defrost program, the defrost pipeline is connected to the compressor, and the refrigeration pipeline is disconnected from the compressor. The high-temperature refrigerant discharged from the compressor is first preheated to the first water receiving pan through the defrost pipe, and then enters the second heat exchanger to defrost and melt the frost on the evaporator surface, ensuring that the defrost water droplets fall into the water receiving pan and are discharged smoothly without being frozen.

[0023] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 is a schematic diagram of the internal structure of a refrigeration device according to an embodiment;

[0026] Figure 2 It is a schematic diagram of the refrigeration system principle;

[0027] Figure 3 It is a schematic diagram of the refrigeration process operation;

[0028] Figure 4 This is the working diagram of the defrost program;

[0029] Figure 5 It is a schematic diagram of the principle of a refrigeration device with a damper assembly;

[0030] Figure 6 is a schematic diagram of the position of the communication channel according to an embodiment;

[0031] Figure 7 for Figure 6 Split diagram;

[0032] Figure 8 It is a schematic diagram of the equipment chamber structure;

[0033] Fig. 9 is a schematic diagram of the structure of a refrigeration compartment according to an embodiment;

[0034] Fig.10 is a schematic diagram of the structural connection of a refrigeration system according to an embodiment;

[0035] Fig.11 for Fig.10 Schematic diagram of the splitting;

[0036] Fig.12 is a schematic diagram of the support base structure;

[0037] Fig.13 This is the installation diagram of the second heat exchanger;

[0038] Fig.14 is a schematic diagram of the connection between the first water receiving tray and the second water receiving tray;

[0039] Fig.15 This is a schematic diagram of the disassembled structure of the air valve assembly;

[0040] Fig.16 It is a schematic diagram of the structure of the air valve assembly when it is in the open state;

[0041] Fig.17 It is a schematic diagram of the structure of the air valve assembly in the closed state;

[0042] Reference numerals:

[0043] 10. Refrigeration pipeline; 20. Defrosting pipeline; 30. Solenoid valve; 40. Dew removal pipe; 50. Dry filter; 60. Throttling device; 70. Gas-liquid separator;

[0044] 100, box body;

[0045] 110. Equipment chamber; 111. Equipment bottom plate; 112. Upper connecting port;

[0046] 120, storage chamber; 121, top wall of inner container; 1211, lower connecting port; 122, rear wall of inner container;

[0047] 130, communication channel; 131, first communication channel; 132, second communication channel; 1321, connecting stand;

[0048] 140, first air guide member; 141, first air guide section; 142, first air outlet section;

[0049] 150, second air guide member; 151, second air guide section; 152, second air outlet section;

[0050] 160. Refrigeration room;

[0051] 200. Compressor;

[0052] 300, a first heat exchanger;

[0053] 400, a second heat exchanger;

[0054] 500, air supply parts;

[0055] 600, support base; 610, air hole; 620, mounting surface; 630, first support surface; 640, drainage recess; 650, mounting recess;

[0056] 700, air valve assembly; 710, air valve unit; 720, air valve bracket; 721, air valve horizontal frame; 722, air valve vertical frame; 723, reinforcing ribs; 730, driving unit;

[0057] 800, second water receiving tray; 810, defrosting part;

[0058] 900. First water receiving tray; 910. Evaporation pipe. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0064] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0065] The refrigeration device in the present application generally comprises a box body, a door body and a refrigeration system, wherein at least a refrigeration compartment is formed in the box body, and the refrigeration compartment is opened and closed through the door body to meet the requirements of storing and retrieving articles.

[0066] The refrigeration system uses a compressor, condenser, expansion valve and evaporator to perform the refrigeration cycle of the refrigeration equipment. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to achieve cooling of the items in the box.

[0067] The low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0068] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas to the compressor. The evaporator can cool the items in the box by utilizing the latent heat of evaporation of the refrigerant.

[0069] refer to Figure 1 The present application proposes a refrigeration device, which includes a box body 100 and a refrigeration system. The box body 100 includes an equipment chamber 110 and a storage chamber 120. The equipment chamber 110 is located above the storage chamber 120, which is beneficial to increase the effective volume of the storage chamber 120 and store more items.

[0070] Combination Figure 2 , Fig.11 , Fig.12 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 a refrigeration pipeline 10.

[0071] The first heat exchanger 300 is specifically a condenser, which is connected to the output end of the compressor 200. The output end of the first heat exchanger 300 is connected to the second heat exchanger 400 after passing through the drying filter 50 and the throttling device 60. The second heat exchanger 400 serves as an evaporator during the refrigeration operation. 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.

[0072] refer to Figure 3 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.

[0073] The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant.

[0074] The second heat exchanger 400 evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 200 .

[0075] The second heat exchanger 400 cools the items in the cabinet 100 by utilizing latent heat of evaporation of the refrigerant.

[0076] refer to Figure 4 In some embodiments of the present application, the refrigeration system can implement a defrosting process in addition to the refrigeration process. The defrosting process is implemented through the defrost pipeline 20 and the defrost part 810 connected to the defrost pipeline 20.

[0077] The switch between defrosting process and refrigeration process is realized in the following ways:

[0078] In some embodiments of the present application, a first switch portion is arranged between the first heat exchanger 300 and the compressor 200, and a second switch portion is arranged on the defrost pipeline 20. In the refrigeration program, the first switch portion is in a connected state, and the second switch portion is in a disconnected state; in the defrost program, the first switch portion is in a disconnected state, and the second switch portion is in a connected state.

[0079] In other embodiments, the defrost pipeline 20 is connected to the refrigeration pipeline 10 through a solenoid valve 30, and the solenoid valve 30 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; under the defrost program, the solenoid valve 30 opens the passage between the compressor 200 and the defrost pipeline 20.

[0080] Two ends of the defrost pipeline 20 are connected to the output end of the compressor 200 and the input end of the second heat exchanger 400 respectively, and the defrost part 810 is connected to the first water receiving tray 900 .

[0081] During the defrosting process, the high-temperature and high-pressure refrigerant output by the compressor 200 is input into the defrost pipeline 20, releases heat in the defrost part 810, and defrosts the first water receiving pan 900. During defrosting, the hot air from the compressor 200 first transfers the heat to the first water receiving pan 900 through the defrost light path, so that the temperature of the first water receiving pan 900 rises rapidly, ensuring that the defrost water flows smoothly without being frozen.

[0082] The refrigerant output from the defrost part 810 then passes through the inside of the second heat exchanger 400, and its high-temperature heat can directly and efficiently melt the ice and frost attached to the outside. The entire defrost process has no electrical components, is safe and energy-saving, and has no electrical safety hazards.

[0083] During the defrosting process, since the temperature in the refrigeration chamber 160 rises, in order to prevent heat from being transferred to the storage chamber 120, the air supply member 500 is turned off.

[0084] That is, during the cooling process, the heat exchange (cooling) efficiency is improved by opening the air supply member 500 for forced convection, and during defrosting, the heat exchange is reduced by closing the air supply member 500 for natural convection;

[0085] There is convection between the equipment room and the storage room only through two connecting channels 130. During defrosting, the second heat exchanger 400 defrosts, the high-temperature gas naturally floats up in the equipment chamber 110, and the low-temperature air in the storage chamber 120 naturally sinks, which is beneficial to reduce heat exchange and avoid temperature changes.

[0086] refer to Figure 5 In some embodiments of the present application, a wind valve assembly 700 is further provided in the communication channel 130. During defrosting, the wind valve assembly 700 can be closed to completely isolate the equipment compartment and the storage compartment, further reducing heat exchange.

[0087] Before defrosting, a refrigeration process is performed to reduce the temperature of the storage chamber 120 to the lowest point within the fluctuation range, which can effectively move downward the temperature rise curve (range) of the equipment chamber 110 caused by high-temperature defrosting.

[0088] After defrosting is completed, the refrigeration process is started. At this time, the air supply member 500 and the air valve assembly 700 remain closed. When the temperature of the refrigeration chamber 160 is lower than the temperature of the storage chamber 120, the air supply member 500 and the air valve assembly 700 are opened to reduce the temperature rise value of the storage chamber 120 caused by high-temperature defrosting.

[0089] Combination Figure 4 In some other embodiments of the present application, a door frame portion is provided on the front side of the storage chamber 120, and a dew-removing pipe 40 is provided in the door frame portion. The dew-removing 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 part of the heat through the dew-removing pipe 40 before entering the first heat exchanger 300 to release the heat. The dew-removing pipe 40 can melt the frost on the door frame portion to avoid freezing of the door frame portion and difficulties in opening the door body.

[0090] refer to Figure 6-Figure 9 A refrigeration chamber 160 is disposed in the equipment chamber 110 . The refrigeration chamber 160 is independently disposed relative to the equipment chamber 110 . At least one communication channel 130 is disposed between the refrigeration chamber 160 and the storage chamber 120 .

[0091] The compressor 200 and the first heat exchanger 300 are installed in the equipment chamber 110 and are located outside the refrigeration compartment 160 .

[0092] The second heat exchanger 400 is disposed in the refrigeration chamber 160 . An air supply member 500 is disposed beside the second heat exchanger 400 . The air supply member 500 is used to transport the airflow after heat exchange in the second heat exchanger 400 to the storage chamber 120 through the communication channel 130 .

[0093] The storage chamber 120 is used to store items to be refrigerated. In order to facilitate taking and placing, a plurality of supporting shelves are provided in the storage chamber 120 for placing the items.

[0094] The low-temperature airflow output from the refrigerating compartment 160 is output from the top wall and the rear wall of the storage chamber 120 into the storage chamber 120 .

[0095] An inner liner is formed in the storage chamber 120, and the inner liner includes an inner liner top wall 121, inner liner side walls and an inner liner rear wall 122. An equipment bottom 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, an insulating gap is formed between the inner liner top wall 121 and the equipment bottom plate 111.

[0096] The communication channel 130 is connected between the equipment bottom plate 111 and the inner tank top wall 121 .

[0097] The low-temperature airflow output from the refrigeration chamber 160 is transported to the storage chamber 120 after passing through the communication channel 130 .

[0098] Specifically, an upper communication port 112 is provided on the equipment bottom plate 111 , lower communication ports 1211 are provided on the inner tank top wall 121 , and the top and bottom of the communication channel 130 are connected to the upper communication port 112 and the lower communication port 1211 , respectively.

[0099] A sealing member is provided between the communication channel 130 and the upper communication port 112 and the lower communication port 1211 to prevent leakage of the low-temperature airflow.

[0100] In some embodiments of the present application, the second heat exchanger 400 is fixed to the bottom of the refrigeration compartment 160 via a support base 600 , and the support base 600 is fixed to the equipment bottom plate 111 .

[0101] refer to Figure 6 , Figure 7 In order to improve the efficiency of air flow delivery, there are two communicating channels 130 , including a first communicating channel 131 and a second communicating channel 132 , and the number of the upper communicating ports 112 and the lower communicating ports 1211 is adapted to the communicating channels 130 .

[0102] The first communication channel 131 is in communication with the top wall 121 of the inner container, and the second communication channel 132 is in communication with the rear wall 122 of the inner container.

[0103] A wind passing concave portion is formed on the support base 600 , and a wind passing gap is formed between the bottom of the second heat exchanger 400 and the wind passing concave portion. The wind passing gap connects the first connecting channel 131 and the second connecting channel 132 to each other.

[0104] The low-temperature airflow output by the air supply member 500 is simultaneously delivered to the storage chamber 120 from the first communication channel 131 and the second communication channel 132 .

[0105] A first air guide 140 is disposed on the top of the storage chamber 120 , and a second air guide 150 is disposed on the rear wall of the storage chamber 120 . A plurality of air outlet holes are dispersedly formed on the first air guide 140 and the second air guide 150 .

[0106] Specifically, the first air guide member 140 is fixed on the top wall 121 of the inner container, and the second air guide member 150 is fixed on the rear wall 122 of the inner container.

[0107] A first air guide cavity is formed between the first air guide member 140 and the storage chamber 120, a second air guide cavity is formed between the second air guide member 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.

[0108] The first air guide 140 extends along the depth direction of the storage chamber 120 , and includes a first air guide section 141 and a first air outlet section 142 . The first air guide section 141 is located between the first connecting channel 131 and the first air outlet section 142 , and an air outlet is formed on the first air outlet section 142 .

[0109] The second air guide member 150 extends along the height direction of the storage chamber 120 , and includes a second air guide section 151 and a second air outlet section 152 . The second air guide section 151 is located between the second connecting channel 132 and the second air outlet section 152 , and the air outlet is located on the second air outlet section 152 .

[0110] The second air guiding section 151 is an inclined structure extending toward the rear wall 122 of the inner container. The second air guiding member 150 and the second connecting channel 132 are connected via a connecting vertical portion 1321 for connecting the second air guiding member 150 and the second connecting channel 132 .

[0111] The first air guide member 140 and the second air guide member 150 are both sheet metal formed structures, and the first air guide member 140 and the second air guide member 150 are fixed in the storage chamber 120 by fasteners such as fastening screws.

[0112] The air outlet holes on the first air guide member 140 and the second air guide member 150 are arranged in an array to achieve uniform delivery of the low-temperature airflow into the storage chamber 120 .

[0113] The equipment chamber 110 is arranged 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 is beneficial to reduce the heat exchange between the equipment chamber 110 and the storage chamber 120 and achieve efficient refrigeration.

[0114] refer to Figure 12-14 In some embodiments of the present application, two mounting surfaces 620 are provided on the support base 600 , and the mounting surfaces 620 are respectively located at two ends of the wind recess, and the bottom of the second heat exchanger 400 is supported on the two mounting surfaces 620 .

[0115] In some embodiments of the present application, a first water receiving tray 900 is further provided on the air passing recess, and the first water receiving tray 900 is located below the second heat exchanger 400 .

[0116] Specifically, first supporting surfaces 630 are formed on both sides of the air passage recess, the first water receiving tray 900 is tilted under the action of the first supporting surfaces 630 , and the drain pipe is connected to the lowest side of the first water receiving tray 900 .

[0117] In order to limit the position of the drain pipe, a drain recess 640 extending downward is further provided on the support base 600 , and the drain pipe is connected to the drain recess 640 .

[0118] A through air hole 610 is formed at the bottom of the support base 600 , and the through air hole 610 is communicated with the communication channel 130 .

[0119] 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 is connected to a water receiving tray via a drainage pipe.

[0120] The bottom plate of the second water receiving tray 800 is provided with an evaporation tube 910 , and the evaporation tube 910 is connected between the output end of the compressor 200 and the first heat exchanger 300 .

[0121] Combination Figure 10-12 In some embodiments of the present application, the air valve 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 .

[0122] The air valve assembly 700 is used to control the opening and closing of the connecting passage 130. When the refrigeration system is not in refrigeration operation, the air valve assembly 700 closes the connecting passage 130, isolating the equipment chamber 110 and the storage chamber 120, which can further reduce the transfer of cold and improve the refrigeration and cold preservation effects.

[0123] Specifically, in some embodiments of the present application, the air valve assembly 700 is disposed on the air hole 610 .

[0124] refer to Fig.15 The air valve assembly 700 includes an air valve bracket 720 , an air valve portion 710 and a driving portion 730 , and the air valve bracket 720 is disposed on the air hole 610 .

[0125] Specifically, a mounting recess 650 is provided on the support base 600 , and the mounting recess 650 is formed above the air hole 610 .

[0126] The air valve assembly 700 is disposed in the mounting recess 650 .

[0127] The driving part 730 is fixed on the air valve bracket 720 , and the air valve part 710 is connected to the output end of the driving part 730 . The driving part 730 is used to control the air valve part 710 to flip up and down along a target angle, thereby controlling the opening and closing of the air hole 610 .

[0128] The air valve bracket 720 includes an air valve horizontal frame 721 and an air valve vertical frame 722 which are vertically arranged to each other. The air valve horizontal frame 721 is fixed above the air hole 610 . The air valve horizontal frame 721 and the air valve vertical frame 722 are respectively used to limit the switch position of the air valve part 710 .

[0129] Reinforcing ribs 723 are arranged at intervals on the air valve horizontal frame 721 and the air valve vertical frame 722 to improve the structural strength of the air valve bracket 720.

[0130] refer to Fig.16 When the air hole 610 is in the open state, the driving unit 730 drives the air valve unit 710 to rotate until it contacts the air valve stand 722, thereby opening the air hole 610.

[0131] refer to Fig.17 When the air hole 610 is closed, the driving unit 730 drives the air valve unit 710 to rotate until it contacts the air valve cross frame 721 to close the air hole 610.

[0132] Below is the specific process of refrigeration process and defrosting process:

[0133] Refrigeration process: the air supply member 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 defrost pipeline 20 between the compressor 200 and the defrost part 810. The refrigerant output from the compressor 200 is transported to the second heat exchanger 400 in the refrigeration chamber 160 for heat exchange and refrigeration after heat exchange in the first heat exchanger 300. Under the action of the air supply member 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.

[0134] Defrosting process: the air supply part 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 the defrost pipeline 20 between the compressor 200 and the defrost part 810 is connected. The high-temperature refrigerant discharged from the compressor 200 is firstly preheated to the first water receiving pan 900 through the defrost 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 defrosted water droplets fall into the water receiving pan and are discharged smoothly without being frozen.

[0135] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0136] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A refrigeration device, characterized in that: include: A box body, which includes an equipment chamber and a storage chamber; A refrigeration system is arranged in the equipment chamber, the refrigeration system comprises a refrigeration pipeline and a defrost pipeline, the refrigeration pipeline is sequentially connected with a compressor, a first heat exchanger and a second heat exchanger, and two ends of the defrost pipeline are respectively connected with an output end of the compressor and an input end of the second heat exchanger; Wherein, a defrost part is arranged on the defrost pipeline, a first water receiving pan is arranged below the second heat exchanger, and the defrost part is connected to the first water receiving pan.

2. The refrigeration equipment according to claim 1, characterized in that: A first switch part is arranged between the first heat exchanger and the compressor, and a second switch part is arranged on the defrost pipeline. In the refrigeration program, the first switch part is in a connected state, and the second switch part is in a disconnected state; in the defrost program, the first switch part is in a disconnected state, and the second switch part is in a connected state.

3. The refrigeration equipment according to claim 1, characterized in that: The defrost pipeline is connected to the refrigeration pipeline through a solenoid valve, and the solenoid valve is a three-way solenoid valve. Under the refrigeration program, the solenoid valve opens the passage between the compressor and the first heat exchanger; under the defrost program, the solenoid valve opens the passage between the compressor and the defrost pipeline.

4. The refrigeration equipment according to claim 1, characterized in that: A second water receiving pan is also provided in the equipment chamber, the first water receiving pan and the second water receiving pan are connected via a drainage pipe, an evaporation tube is also provided between the compressor and the first heat exchanger, the evaporation tube is provided in the second water receiving pan, and is used to evaporate the water in the second water receiving pan.

5. The refrigeration equipment according to claim 1, characterized in that: A door frame is provided at the front side of the storage chamber, a dew removal pipe is provided in the door frame, and the dew removal pipe is connected between the compressor and the first heat exchanger.

6. The refrigeration device according to claim 1, characterized in that: A drying filter and a throttling device are further provided between the first heat exchanger and the second heat exchanger, and a gas-liquid separator is further provided between the second heat exchanger and the compressor. The drying filter, the throttling device and the gas-liquid separator are all installed in the equipment chamber.

7. The refrigeration equipment according to claim 4, characterized in that: The equipment chamber is located above the storage chamber, a refrigeration chamber is arranged in the equipment chamber, at least one communication channel is arranged between the refrigeration chamber and the storage chamber, the second heat exchanger and the first water receiving pan are arranged in the refrigeration chamber, an air supply member is arranged beside the second heat exchanger, and the air supply member is used to transport the airflow after heat exchange by the second heat exchanger to the storage chamber through the communication channel.

8. The refrigeration device according to claim 7, characterized in that: The second heat exchanger is fixed to the bottom of the refrigeration compartment through a support base, a wind passing recess is formed on the support base, a wind passing gap is formed between the bottom of the second heat exchanger and the wind passing recess, a penetrating wind hole is formed at the bottom of the support base, and the wind hole is connected to the connecting channel.

9. The refrigeration device according to claim 8, characterized in that: First supporting surfaces are formed on both sides of the air passing concave portion, the first water receiving tray is tilted under the action of the first supporting surfaces, and the drain pipe is connected to the lowest side of the first water receiving tray.

10. The refrigeration device according to claim 1, characterized in that: An equipment bottom plate is formed at the bottom of the equipment chamber, an inner liner is formed in the storage chamber, a heat insulating gap is formed between the top wall of the inner liner and the equipment bottom plate, and the connecting channel is connected between the equipment bottom plate and the top wall of the inner liner.

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