Refrigeration equipment

Abstract

The refrigeration equipment comprises a container body and a first air duct body, the container body is provided with a first chamber and a second chamber, the first air duct body is arranged in the first chamber, a heat exchanger chamber is defined by the first air duct body and the rear side wall of the container body, and a first storage cavity is formed in the side, away from the heat exchanger chamber, of the first air duct body; the first air duct body is provided with a first air supply duct and a first air return duct, the first air supply duct communicates with the first storage chamber and the heat exchanger chamber, and the first air return duct communicates with the heat exchanger chamber and the second chamber; the first air supply duct and the first air return duct are integrally formed and located on the same side of the heat exchanger chamber. The first air supply duct and the first air return duct are integrated in the first air duct body, so that the air duct design is more compact, the occupation of the internal space of the container body is reduced, and the storage space can be increased.

Description

Technical Field

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

[0002] Refrigerators are essential household appliances in our daily lives. Air-cooled refrigerators currently dominate the consumer market due to their inherent resistance to frost buildup. Air-cooled refrigerators require an air duct system to control the circulation of cold air, and the return air structure is a crucial component of this duct system.

[0003] For the built-in refrigerators currently popular on the market, very high storage capacity is required, but the traditional air duct structure takes up a lot of internal space, especially the refrigerated return air structure, which needs to be connected from one compartment to another, taking up a large space and affecting the storage capacity of the built-in refrigerator. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a refrigeration device that can reduce the space occupied by the return air duct in the internal space of the refrigeration device, thereby increasing the storage capacity of the refrigeration device.

[0005] The refrigeration device according to the embodiment of the present invention includes:

[0006] a body of bile, provided with a first chamber and a second chamber; and

[0007] A first air duct body is arranged in the first chamber, and the first air duct body and the rear side wall of the duct body define a heat exchanger chamber. A first storage chamber is formed on the side of the first air duct body facing away from the heat exchanger chamber. The first air duct body is provided with a first supply air duct and a first return air duct, the first supply air duct connects the first storage chamber and the heat exchanger chamber, and the first return air duct connects the heat exchanger chamber and the second chamber; wherein, the first supply air duct and the first return air duct are integrally formed, and the first supply air duct and the first return air duct are located on the same side of the heat exchanger chamber.

[0008] The refrigeration equipment according to the embodiment of the present utility model has at least the following beneficial effects:

[0009] By integrally forming the first return air duct and the first supply air duct, that is, integrating the first return air duct and the first supply air duct into the first duct body, the overall structure of the duct system is simplified, making the entire duct system design more compact, reducing the internal space occupied by the duct body, and increasing storage space. In particular, compared to conventional refrigerators that often place the return air duct on the back of the evaporator or embed it within the refrigerator's foam layer, the first return air duct of the present application is located on the front side of the evaporator. The first return air duct utilizes the internal space of the first duct body, eliminating the need to increase the thickness of the refrigeration device's foam layer or to reserve installation space on the back side of the evaporator. This increases the storage space of the first compartment, effectively increasing the storage space of the refrigeration device. Furthermore, by placing the entire first duct body within the first compartment and providing the first air passage on the partition, air from the second compartment enters the heat exchanger compartment through the first air passage and the first return air duct. This eliminates the need for the first return air duct to occupy the internal space of the second compartment, thereby increasing the storage space of the second compartment and further increasing the storage space of the refrigeration device.

[0010] According to some embodiments of the present invention, a first return air inlet is provided at one end of the first air duct body close to the second chamber, and the first return air inlet connects the first return air duct and the second chamber;

[0011] A first return air outlet is provided on a side of the first air duct body facing the heat exchanger chamber, and the first return air outlet is close to an end of the first air duct body away from the second chamber, and the first return air outlet connects the first return air duct and the heat exchanger chamber.

[0012] According to some embodiments of the present invention, the first return air outlet extends along a first direction, the length of the first return air outlet along the first direction is H, the length of the first air duct body along the first direction is L, satisfying L / 3≤H≤2L / 3; wherein, the first direction is parallel to the width direction of the duct body.

[0013] According to some embodiments of the present invention, the width of the first return air duct along the first direction increases gradually from one end of the first return air duct close to the second chamber to the end away from the second chamber, and the first direction is parallel to the width direction of the gallbladder body.

[0014] According to some embodiments of the present invention, the refrigeration device includes a heat exchanger, and the heat exchanger is disposed in the heat exchanger chamber;

[0015] The first air duct body includes an air duct front cover and an air duct rear cover. The air duct rear cover is located between the heat exchanger and the air duct front cover. The first return air duct is defined between the air duct rear cover and the air duct front cover.

[0016] According to some embodiments of the present invention, in the wall body of the first return air duct formed by the first air duct body, along the circumference of the first return air duct, except for the wall body facing the heat exchanger chamber, at least one wall body in the remaining directions is provided with a heat insulation layer.

[0017] According to some embodiments of the present invention, the first air duct body further includes a guide plate, which is disposed in the first return air duct and extends in a direction away from the second chamber.

[0018] According to some embodiments of the present invention, the first return air duct and the first supply air duct are arranged along a first direction, a first side wall is provided on a side of the first return air duct away from the first supply air duct, and the first direction is parallel to the width direction of the duct body;

[0019] The distance between the guide plate and the first side wall increases gradually from an end of the guide plate close to the second chamber to an end of the guide plate far from the second chamber.

[0020] According to some embodiments of the present invention, the refrigeration equipment further includes a partition, which divides the inner cavity of the bladder body into the first chamber and the second chamber, and the partition is provided with a first air passage, which connects the second chamber and the first return air duct, so that the air in the second chamber flows into the heat exchanger chamber through the first air passage and the first return air duct.

[0021] According to some embodiments of the present invention, the partition is provided with a second air passage, and the second air passage is connected to the first air supply duct;

[0022] The refrigeration equipment also includes a second air duct body, which is arranged in the second chamber. The second air duct body is provided with a second air supply duct, and the second air supply duct connects the second chamber and the second air passage, so that the cold air in the heat exchanger chamber is sent into the second chamber through the first air supply duct, the second air passage, and the second air supply duct.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic structural diagram of a refrigeration device according to an embodiment of the present utility model;

[0026] Figure 2 for Figure 1A partial cross-sectional view of the refrigeration equipment along section AA;

[0027] Figure 3 This is a schematic structural diagram of the first air duct body according to an embodiment of the present utility model;

[0028] Figure 4 This is a front view of the first air duct body of an embodiment of the utility model;

[0029] Figure 5 for Figure 4 A cross-sectional view of the first air duct body along section CC;

[0030] Figure 6 for Figure 1 A partial cross-sectional view of the refrigeration equipment along section BB;

[0031] Figure 7 for Figure 6 A partial enlarged view of point E in the middle;

[0032] Figure 8 for Figure 4 A schematic cross-sectional view of the first air duct body along section DD;

[0033] Figure 9 This is a left side view of the first air duct body of the embodiment of the utility model;

[0034] Figure 10 for Figure 9 A stepped cross-sectional view of the first air duct body along section GG;

[0035] Figure 11 This is a rear view of the first air duct body of an embodiment of the present utility model;

[0036] Figure 12 for Figure 2 A partial enlarged view of point F in the middle.

[0037] Figure Number:

[0038] Refrigeration equipment 10; box liner assembly 100;

[0039] Gallbladder body 110; first chamber 111; heat exchanger chamber 1111; first storage chamber 1112; second chamber 112;

[0040] Partition 120; first air passage 121; second air passage 122; heat exchanger 200;

[0041] First air duct body 300; first air supply duct 300a; first air return duct 300b;

[0042] Air duct front cover 310; first end wall 311; first side wall 312; second side wall 313; third side wall 314; first air outlet 315;

[0043] Air duct rear cover 320; first area 320a; first return air outlet 321; first return air inlet 322; air supply port 323; air intake hole 324;

[0044] Air guide plate 330; second return air duct 331;

[0045] Thermal insulation layer 340; first thermal insulation layer 341; second thermal insulation layer 342; third thermal insulation layer 343; fourth thermal insulation layer 344;

[0046] deflector 350;

[0047] Second air duct body 400; second air supply duct 410; second air outlet 412;

[0048] Fan 500; thermal insulation 600; air passage cavity 610; first air door 700. DETAILED DESCRIPTION

[0049] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0050] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0052] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0053] The present application provides a refrigeration device, which may be an electrical appliance such as a refrigerator or freezer.

[0054] Please refer to Figure 1 , Figure 1Schematic diagram of the structure of a refrigeration device according to an embodiment of the present invention. The refrigeration device 10 includes a liner assembly 100 and a first air duct body 300 .

[0055] The liner assembly 100 includes a liner body 110, which is used to form a storage space for the refrigeration device 10, for installing the air duct, shelves, drawers and other components of the refrigeration device 10, and for storing items to be stored at low temperatures. The number of liner bodies 110 can be one, two, or more. Depending on the refrigeration temperature, the liner body 110 can serve as a freezer liner or a refrigerator liner. The refrigeration temperature of the freezer liner is lower than that of the refrigerator liner. The following mainly describes the freezer liner in detail.

[0056] A partition 120 is provided within the container body 110, separating the container body 110 into a first chamber 111 and a second chamber 112. By delivering different amounts of cooling to the first and second chambers 111, 112, the first and second chambers 111, 112 are maintained at different storage temperatures, creating multiple storage temperature zones within the same container body 110 to meet the user's storage needs for different items. It is understood that an insulation layer may be provided within the partition 120. This insulation layer provides thermal insulation and can block heat transfer between the first and second chambers 111, 112, preventing the temperatures of the first and second chambers 111, 112 from interfering with each other.

[0057] In one embodiment, the cooling temperature of the first chamber 111 is -24°C to -18°C, and the cooling temperature of the second chamber 112 is -18°C to -5°C. The cooling temperature of the first chamber 111 is lower than that of the second chamber 112, and the second chamber 112 can be used as a variable temperature chamber.

[0058] The partition 120 may extend along the height direction of the refrigeration device 10 (i.e., the up-down direction in the figure), so that the first chamber 111 and the second chamber 112 are arranged in the horizontal direction, and the first chamber 111 and the second chamber 112 are respectively located on the left and right sides of the partition 120; the partition 120 may also extend along the width direction of the refrigeration device 10 (i.e., the left-right direction in the figure), so that the first chamber 111 and the second chamber 112 are arranged in the vertical direction, and the first chamber 111 and the second chamber 112 are respectively located on the upper and lower sides of the partition 120. This embodiment of the present application is not limited to this.

[0059] In one embodiment, if Figure 1 As shown, the partition 120 extends along the width direction of the refrigeration device 10, and the first chamber 111 and the second chamber 112 are located on the upper and lower sides of the partition 120. For convenience of description, the chamber located on the lower side of the partition 120 is defined as the first chamber 111, and the chamber located on the upper side of the partition 120 is defined as the second chamber 112.

[0060] Please combine Figure 1 And refer to Figure 2 , Figure 2 for Figure 1 A partial cross-sectional view of the refrigeration device along section AA. The first air duct body 300 is disposed within the first compartment 111. The first air duct body 300 and the rear sidewall of the duct body 110 define a heat exchanger chamber 1111. A first storage chamber 1112 is formed on the side of the first air duct body 300 facing away from the heat exchanger chamber 1111. A heat exchanger 200, such as an evaporator, is disposed within the heat exchanger chamber 1111. The first storage chamber 1112 is used to store items. For example, storage shelves or drawers can be installed within the first storage chamber 1112 to hold items that require low-temperature storage. The first air duct body 300 can define a supply air channel and a return air channel. Air within the first storage chamber 1112 can enter the heat exchanger chamber 1111 through the return air channel, exchange heat with the heat exchanger 200 within the heat exchanger chamber 1111, and be cooled to form cold air. The cooled cold air is then delivered to the first storage chamber 1112 through the supply air channel.

[0061] Please combine Figure 2 And refer to Figure 3 、 Figure 4 and Figure 5 , Figure 3 This is a schematic structural diagram of the first air duct body according to an embodiment of the present utility model. Figure 4 This is a front view of the first air duct body of the embodiment of the utility model. Figure 5 for Figure 4 A cross-sectional view of the first air duct body along section CC. The first air duct body 300 is provided with a first air supply duct 300a. The first air supply duct 300a connects the first storage chamber 1112 and the heat exchanger chamber 1111. The first air supply duct 300a allows cold air in the heat exchanger chamber 1111 to be delivered to the first storage chamber 1112 through the first air supply duct 300a, thereby cooling the first storage chamber 1112.

[0062] The first air duct body 300 is provided with a first air outlet 315, and the first air supply duct 300a is connected to the first storage chamber 1112 through the first air outlet 315. It is understood that the number of first air outlets 315 can be multiple so that the cold air can be evenly blown to various areas of the first storage chamber 1112 to achieve uniform cooling of the first storage chamber 1112.

[0063] The first air duct body 300 is also provided with an air guide plate 330, which is arranged at the bottom of the first air duct body 300. The air guide plate 330 and the rear side wall of the duct body 110 are enclosed to form a second return air duct 331. The second return air duct 331 is also connected to the first storage chamber 1112 and the heat exchanger chamber 1111. The air in the first storage chamber 1112 that has undergone heat exchange with the stored items can flow into the heat exchanger chamber 1111 through the second return air duct 331.

[0064] The refrigeration device 10 also includes a fan 500, which is a power source that provides power to drive air flow. In one embodiment, the fan 500 is disposed in the first air supply duct 300a. The first air duct body 300 is provided with an air intake hole 324 on the side facing the heat exchanger chamber 1111. The first air supply duct 300a is connected to the heat exchanger chamber 1111 through the air intake hole 324. Specifically, during the operation of the fan 500, a negative pressure is generated in the first air supply duct 300a, and the cold air in the heat exchanger chamber 1111 is sucked into the first air supply duct 300a through the air intake hole 324. Under the continuous action of the fan 500, the cold air entering the first air supply duct 300a is sent into the first storage chamber 1112 through the first air outlet 315 for heat exchange, so that the temperature of the first storage chamber 1112 is reduced. The air after heat exchange flows back to the heat exchanger chamber 1111 through the second return air duct 331, exchanges heat with the heat exchanger 200 for cooling. The cooled cold air is again sent into the first storage chamber 1112 through the first air supply duct 300a under the action of the suction force of the fan 500, and this cycle is repeated to realize the air-cooling circulation of the first storage chamber 1112.

[0065] Since the heat exchanger chamber 1111 is located in the first chamber 111, in order to blow cold air to the second chamber 112, the partition 120 can be provided with an air supply channel and an air return channel connecting the first chamber 111 and the second chamber 112, so that the cold air in the heat exchanger chamber 1111 enters the second chamber 112 through the air supply channel to cool the second chamber 112, and the air after heat exchange in the second chamber 112 flows back into the heat exchanger chamber 1111 through the air return channel.

[0066] In one embodiment, please refer to Figure 2 The partition 120 is provided with a second air passage 122, which connects the second chamber 112 and the heat exchanger chamber 1111. Under the action of the fan 500, the cold air in the heat exchanger chamber 1111 is sent into the second chamber 112 through the second air passage, thereby cooling the second chamber 112.

[0067] Please refer to Figure 6 and Figure 7 , Figure 6 for Figure 1 Partial cross-sectional view of the refrigeration equipment along section BB, Figure 7 for Figure 6A partial enlarged view of point E in the middle. The partition 120 is provided with a first air passage 121, which connects the first chamber 111 and the second chamber 112. The first air duct body 300 is provided with a first return air duct 300b, one end of which connects to the heat exchanger chamber 1111 and the other end to the first air passage 121. This allows air in the second chamber 112 to flow into the heat exchanger chamber 1111 through the first air passage 121 and the first return air duct 300b.

[0068] Please combine Figure 6 、 Figure 7 And refer to Figure 8 , Figure 8 for Figure 4 A schematic cross-sectional view of the first air duct body along section DD is shown. A first return air inlet 322 is provided at the top of the first air duct body 300. One end of the first return air duct 300b communicates with the first air passage 121 via the first return air inlet 322. The first air duct body 300 is also provided with a first return air outlet 321. The other end of the first return air duct 300b communicates with the heat exchanger chamber 1111 via the first return air outlet 321.

[0069] Specifically, during the cooling process of the second chamber 112, under the action of the fan 500, the cold air in the heat exchanger chamber 1111 enters the second chamber 112 through the second air passage 122 for heat exchange, thereby reducing the temperature of the second chamber 112. The air after heat exchange flows back to the heat exchanger chamber 1111 through the first air passage 121 and the first return air duct 300b for heat exchange and cooling. The cooled cold air is then sent back to the second chamber 112 through the second air passage 122 under the action of the fan 500. This cycle is repeated to achieve air cooling circulation for the second chamber 112.

[0070] The first air supply duct 300a and the first air return duct 300b are integrally formed and are located on the same side of the heat exchanger chamber 1111. Figure 9 and Figure 10 , Figure 9 This is a left view of the first air duct body of the embodiment of the utility model. Figure 10 for Figure 9 The first return air duct 300b and the first supply air duct 300a are arranged along a first direction, which is parallel to the width direction of the duct body 110, that is, parallel to the width direction of the refrigeration device 10.

[0071] That is to say, the first air supply duct 300a and the first return air duct 300b of the embodiment of the present application are integrated on the first air duct body 300, and the first air supply duct 300a and the first return air duct 300b are almost located in the same layer of space of the first air duct body 300, and the first return air duct 300b is located on the front side of the evaporator.

[0072] Then, the embodiment of the present application integrates the first return air duct 300b and the first supply air duct 300a on the first air duct body 300. In other words, the supply air duct of the first chamber 111 and the return air duct of the second chamber 112 are integrated into the same air duct body, which simplifies the overall structure of the air duct system and makes the design of the entire air duct system more compact. It can reduce the occupation of the internal space of the body 110 and increase the storage space. In particular, compared with traditional refrigerators that often set the return air duct on the back of the evaporator or pre-embed the return air duct in the foam layer of the refrigerator, the first return air duct 300b of the present application is located on the front side of the evaporator. The first return air duct 300b utilizes the internal space of the first air duct body 300, and there is no need to increase the thickness of the foam layer of the refrigeration device 10 or reserve installation space on the back side of the evaporator. The storage space of the first chamber 111 is increased, thereby effectively increasing the storage space of the refrigeration device 10. Moreover, in the embodiment of the present application, the entire first air duct body 300 is disposed in the first chamber 111. By providing the first air passage 121 on the partition 120, the air in the second chamber 112 enters the heat exchanger chamber 1111 through the first air passage 121 and the first return air duct 300b. The first return air duct 300b does not need to occupy the internal space of the second chamber 112, thereby increasing the storage space of the second chamber 112 and further increasing the storage space of the refrigeration equipment.

[0073] Furthermore, by integrating the first return air duct 300b and the first supply air duct 300a into the first duct body 300, the embodiment of the present application achieves both supply air to the first chamber 111 and return air to the second chamber 112 through a single duct member. Compared to conventional refrigerators that utilize separate duct members for return air to the second chamber 112, this reduces the number of components and simplifies the structure of the duct system. This, in turn, simplifies the overall assembly of the refrigeration device 10 and improves production efficiency. Furthermore, if the duct system needs to be subsequently repaired, the entire first duct body 300 can be removed from the duct body 110, eliminating the need for multiple disassemblies and facilitating maintenance.

[0074] Combined with reference Figure 6 and Figure 8 As shown, the first air duct body 300 includes an air duct front cover 310 and an air duct rear cover 320. The air duct rear cover 320 is located between the heat exchanger 200 and the air duct front cover 310. The first return air duct 300b is defined between the air duct rear cover 320 and the air duct front cover 310.

[0075] A first slot may be provided on the side of the duct front cover 310 facing the duct rear cover 320, and the first slot and the duct rear cover 320 together form the first return air duct 300b. Of course, in other optional embodiments, a second slot may be provided on the side of the duct rear cover 320 facing the duct front cover 310, and the second slot and the duct front cover 310 together form the first return air duct 300b.

[0076] In one embodiment, the air duct rear cover 320 is in contact with the heat exchanger 200. Figure 6 As shown, the heat exchanger 200 contacts the side of the duct rear cover 320 facing away from the duct front cover 310. Specifically, the cooling energy generated by the heat exchanger 200 during the cooling process can be transferred to the duct rear cover 320. In other words, the surface of the duct rear cover 320 contacts the heat exchanger 200, exchanging heat and lowering the temperature of the duct rear cover 320. Consequently, the return air entering the first return air duct 300b from the second chamber 112 exchanges heat with the duct rear cover 320. In other words, before entering the heat exchanger chamber 1111, this return air first exchanges heat with the duct rear cover 320, initially cooling it. Then, after entering the heat exchanger chamber 1111 from the first return air duct 300b, it exchanges heat with the duct rear cover 320 again, further cooling it. In this way, the first return air duct 300b is defined by the duct rear cover 320 and the duct front cover 310, and the duct rear cover 320 is in contact with the heat exchanger 200, so that the return air can be heat exchanged and cooled in the first return air duct 300b, which can improve the heat exchange efficiency of the return air, thereby improving the cooling efficiency of the refrigeration equipment 10.

[0077] To further improve the return air heat exchange efficiency, the first return air outlet 321 is disposed on a side of the first air duct body 300 facing the heat exchanger chamber 1111 , and the first return air outlet 321 is close to an end of the first air duct body 300 away from the second chamber 112 .

[0078] Please combine Figure 8 And refer to Figure 11 , Figure 11 This is a rear view of the first air duct body of an embodiment of the present invention. The first return air outlet 321 is provided on the air duct rear cover 320. The air duct rear cover 320 includes a first area 320a. The first area 320a is located at the end of the air duct rear cover 320 away from the partition 120. The first return air outlet 321 is provided in the first area 320a.

[0079] Through the above arrangement, the first return air outlet 321 is arranged at the farthest end of the air duct rear cover 320 from the partition 120, so as to Figure 1For example, when the partition 120 extends along the width direction of the duct body 110, the first return air outlet 321 is set at the bottom end of the air duct rear cover 320. Then, the first return air duct 300b has a longer length when extending to the first return air outlet 321. The return air entering the first return air duct 300b needs to flow to the bottom end of the air duct rear cover 320 before entering the heat exchanger chamber 1111. This increases the heat exchange distance of the return air in the second chamber 112 and the heat exchange time of the return air, which can further improve the return air heat exchange efficiency, thereby improving the cooling efficiency of the refrigeration device 10.

[0080] Since the air flowing into the first return air duct 300b is relatively hot air flowing out of the second chamber 112 after heat exchange (relatively speaking, the temperature of this hot air is lower than the ambient air temperature outside the refrigeration equipment 10), in order to prevent this hot air from exchanging heat with the air duct front cover 310 and causing the air duct front cover 310 to affect the temperature in the first storage chamber 1112, a heat insulation layer can be provided in the first return air duct 300b.

[0081] In one embodiment, in the wall of the first return air duct 300b formed by the first air duct body 300, along the circumference of the first return air duct 300b, except for the wall facing the heat exchanger chamber 1111, at least one wall in the remaining directions is provided with a heat insulation layer 340.

[0082] Please refer to Figure 8 and Figure 10 The first air duct body 300 includes a first end wall 311, a first side wall 312, a second side wall 313, and a third side wall 314, which form the first return air duct 300b. The first end wall 311 faces the first storage chamber 1112. The first side wall 312, the second side wall 313, and the third side wall 314 are connected to the side of the first end wall 311 facing away from the first storage chamber 1112. The second side wall 313 is located between the first side wall 312 and the first supply air duct 300a, and the third side wall 314 is connected between the first side wall 312 and the second side wall 313. A heat insulating layer 340 is provided on at least one of the first end wall 311, the first side wall 312, the second side wall 313, and the third side wall 314.

[0083] It should be noted that the first side wall 312, the second side wall 313, and the third side wall 314 are connected to the side of the first end wall 311 facing away from the first storage chamber 1112. The connection here can be a freely detachable connection or a non-detachable connection. For example, when the first return air duct 300b is formed by the second groove on the air duct rear cover 320 and the air duct front cover 310, the first side wall 312, the second side wall 313, and the third side wall 314 can be the wall structure forming the second groove on the air duct rear cover 320, and the first end wall 311 is the structure on the air duct front cover 310. In this case, the first side wall 312, the second side wall 313, and the third side wall 314 are connected to the first end wall 311 in abutting manner, that is, a freely detachable connection.

[0084] like Figure 8 As shown, the thermal insulation layer 340 may include a first thermal insulation layer 341, which is arranged on the inner surface of the first end wall 311, that is, the side of the first end wall 311 facing away from the first storage chamber 1112. The first thermal insulation layer 341 can thermally isolate the first return air duct 300b from the first end wall 311, block the heat from being transferred to the first end wall 311, and prevent the hot air in the first return air duct 300b from passing through the first end wall 311 to exchange heat with the cold air in the first storage chamber 1112, thereby avoiding affecting the temperature in the first storage chamber 1112.

[0085] like Figure 10 As shown, the heat insulation layer 340 may include a second heat insulation layer 342, and the second heat insulation layer 342 is provided on the inner surface of the second side wall 313. The inner surface of the second side wall 313 refers to the side of the second side wall 313 facing the first return air duct 300b. By providing the second heat insulation layer 342, the second heat insulation layer 342 thermally isolates the first return air duct 300b and the second side wall 313, blocks heat from being transferred to the second side wall 313, thereby blocking heat from being transferred to the first end wall 311 through the second side wall 313, and preventing heat from being transferred through the first end wall 311 to the cold air in the first storage chamber 1112 to avoid heat from being transferred to the first end wall 311. At the same time, since the second side wall 313 is located between the first return air duct 300b and the first supply air duct 300a, the second heat insulation layer 342 can also thermally isolate the first return air duct 300b from the first supply air duct 300a, preventing the hot air in the first return air duct 300b from exchanging heat with the cold air in the first supply air duct 300a through the second side wall 313, thereby avoiding the temperature of the cold air in the first supply air duct 300a from rising, which results in more cold air being required to reduce the temperature of the first storage chamber 1112 to the required cooling temperature, thereby avoiding increased power consumption.

[0086] The thermal insulation layer 340 may include a third thermal insulation layer 343, which is arranged on the inner surface of the first side wall 312, that is, the side of the first side wall 312 facing the first return air duct 300b. The third thermal insulation layer 343 thermally isolates the first return air duct 300b from the first side wall 312, blocks the heat from being transferred to the first side wall 312, and thus blocks the heat from being transferred to the first end wall 311 through the first side wall 312, further preventing the heat from being exchanged with the cold air in the first storage chamber 1112 through the first end wall 311, thereby avoiding affecting the temperature in the first storage chamber 1112.

[0087] The thermal insulation layer 340 may also include a fourth thermal insulation layer 344, which is arranged on the inner surface of the third side wall 314, that is, the side of the third side wall 314 facing the first return air duct 300b. The fourth thermal insulation layer 344 thermally isolates the first return air duct 300b from the third side wall 314, blocks the heat from being transferred to the third side wall 314, and further prevents the hot air in the first return air duct 300b from passing through the third side wall 314 to exchange heat with the cold air in the first storage chamber 1112, thereby avoiding affecting the temperature in the first storage chamber 1112.

[0088] It can be understood that by providing the above-mentioned insulation layer 340, during the process of heating and defrosting the heat exchanger 200, the insulation layer 340 can also block the heat in the first return air duct 300b, preventing the heat from being transferred to the first storage chamber 1112 through the first air duct body 300, thereby avoiding affecting the temperature in the first storage chamber 1112 when the heat exchanger 200 is heated and defrosted.

[0089] In one embodiment, a first trough (not shown) is provided on the side of the duct front cover 310 facing the duct rear cover 320. The first trough and the duct rear cover 320 together form the first return air duct 300b. The first end wall 311, first side wall 312, second side wall 313, and third side wall 314 are all trough walls of the first trough, that is, they are all wall structures on the duct front cover 310. By providing the first return air duct 300b to be formed by the first trough on the duct front cover 310 and the duct rear cover 320, the thermal insulation layer 340 is entirely provided on the duct front cover 310, facilitating the production of the first duct body 300.

[0090] Please refer again Figure 10 In one embodiment, the width of the first return air duct 300 b along the first direction increases gradually from an end of the first return air duct 300 b close to the partition 120 to an end of the first return air duct 300 b away from the partition 120 .

[0091] That is, the first return air duct 300b has a narrower width at the end near the first return air inlet 322 and a wider width at the end near the first return air outlet 321, resulting in a trumpet-shaped cross-section of the first return air duct 300b. This provides the first return air duct 300b with a larger space, facilitating return air flow to the second chamber 112. Furthermore, the first return air outlet 321 is located at the rear end of the first return air duct 300b, and since the rear end of the first return air duct 300b is wider, the length of the first return air outlet 321 can be increased accordingly based on the width of the rear end of the first return air duct 300b, further facilitating return air flow. Return air entering the first return air duct 300b flows through the larger first return air outlet 321 to a larger area within the heat exchanger chamber 1111, thereby increasing the heat exchange area between the return air and the heat exchanger 200 and improving the heat exchange effect.

[0092] Please continue to refer to Figure 10 The first side wall 312 and the second side wall 313 are arranged relative to each other along the first direction, the first side wall 312 is located between the first return air duct 300b and the first supply air duct 300a, and one end of the first return air outlet 321 is close to the first side wall 312, and the other end is close to the second side wall 313.

[0093] By setting one end of the first return air outlet 321 adjacent to the first side wall 312 and the other end of the first return air outlet 321 adjacent to the second side wall 313, the length of the first return air outlet 321 is set larger, close to the maximum width of the tail end of the first return air duct 300b, so that the return air flowing out of the first return air outlet 321 can flow to more space areas in the heat exchanger chamber 1111, thereby improving the heat exchange efficiency.

[0094] In one embodiment, if Figure 11 As shown, the length of the first return air outlet 321 along the first direction is H, and the length of the first air duct body 300 along the first direction is L, satisfying L / 3≤H≤2L / 3. In other words, along the first direction, the length of the first return air outlet 321 is at least greater than one-third of the total length of the first air duct body 300. Therefore, compared to traditional air duct structures, the return air flowing out of the first return air outlet 321 can flow to a larger area within the heat exchanger chamber 1111, rather than just to one side of the heat exchanger chamber 1111. This allows the return air to utilize a larger area of ​​the heat exchanger 200 for heat exchange, thereby improving the utilization rate of the heat exchanger 200 and the heat exchange efficiency of the return air. Moreover, the length of the first return air outlet 321 is designed to be larger, which can improve the frosting situation at the first return air outlet 321. Even if frost condenses at the first return air outlet 321, it is difficult for the frost to block the entire first return air outlet 321, and enough space can be left for the return air to pass through. This can effectively improve the situation in related technologies where the return air outlet is easily blocked by frost, effectively reduce the impact on the return air flow, and improve the air cooling cycle efficiency.

[0095] It will be appreciated that in this embodiment, the length of the first return air outlet 321 is set to no longer than two-thirds of the total length of the first air duct body 300. This avoids the need to enlarge the first return air duct 300b to increase the length of the first return air outlet 321. This prevents the first return air duct 300b from occupying too much space, resulting in insufficient space within the first air duct body 300 for forming the first supply air duct 300a, thereby avoiding affecting the air supply efficiency of the first chamber 111.

[0096] Taking into account the design of the first return air duct 300b and the first supply air duct 300a, in one embodiment, the length of the first return air outlet 321 along the first direction is equal to half the length of the first air duct body 300 along the first direction, that is, H = L / 2. With this configuration, the length of the first return air outlet 321 is relatively long, and the return air flowing into the heat exchanger chamber 1111 from the first return air outlet 321 can exchange heat with at least half the area of ​​the heat exchanger 200, achieving high heat exchange efficiency. At the same time, sufficient space is left on one side of the first return air duct 300b for the first supply air duct 300a, avoiding the need for the first supply air duct 300a to be too small, thereby ensuring efficient air supply to the first chamber 111.

[0097] Please continue to refer to Figure 10 The first air duct body 300 further includes a guide plate 350 , which is disposed in the first return air duct 300 b and extends in a direction away from the partition 120 .

[0098] By setting the guide plate 350, the air entering the first return air duct 300b can be guided to flow along the guide plate 350. Figure 10 For example, when the width of the first return air duct 300b is small near the return air inlet 322 and large near the first return air outlet 321, the first return air inlet 322 is small, and the guide plate 350 can divide the airflow entering from the first return air inlet 322 into two parts, and guide the two parts of the airflow to flow along both sides of the guide plate 350, so that the return air is dispersed and can flow through various parts of the first return air duct 300b, avoiding the return air from concentrating on one side of the first return air duct 300b, so that the return air can flow to various parts of the first return air outlet 321, and then flow to more space areas in the heat exchanger chamber 1111 through the first return air outlet 321.

[0099] It can be understood that the guide plate 350 can be set to one or more, and the specific number of the guide plates 350 can be set according to the specific length adaptability of the first return air outlet 321. The drawings of this embodiment only take the example of setting one guide plate 350, and it cannot be regarded as a limitation of this application.

[0100] To facilitate the flow of return air, a deflector 350 can be fixed within the first return air duct 300b. Specifically, the deflector 350 can be connected to the duct front cover 310 and extend toward the duct rear cover 320, or it can be connected to the duct rear cover 320 and extend toward the duct front cover 310. In one embodiment, the deflector 350 is connected to the duct front cover 310 and is integrally formed with the duct front cover 310.

[0101] In one embodiment, the distance between the guide plate 350 and the first side wall 312 increases from the end of the guide plate 350 close to the partition 120 to the end away from the partition 120. In other words, the guide plate 350 and the first side wall 312 are not parallel, and the closer the guide plate 350 is to the first return air outlet 321, the greater the distance between the guide plate 350 and the first side wall 312. Figure 10 As shown, the guide plate 350 may be designed as an inclined plate relative to the first side wall 312 .

[0102] Through the above-mentioned setting, the guide plate 350 can better guide the return air to flow toward the first return air outlet 321 away from the first side wall 312, avoiding the air in the first return air duct 300b from concentrating on the side close to the first side wall 312, so as to further make the return air flow to more areas in the heat exchanger chamber 1111, thereby improving the utilization rate of the heat exchanger 200 and improving the return air heat exchange effect.

[0103] In order to better blow cold air into the second chamber 112, the refrigeration device 10 may further be provided with other air duct structures, for example, a second air duct body may be provided, the second air duct body being connected to the heat exchanger chamber 1111 of the first chamber 111, and the cold air in the heat exchanger chamber 1111 being sent into the second chamber 112 through the second air duct body.

[0104] In one embodiment, please combine Figure 2 And refer to Figure 12 , Figure 12 for Figure 2 A partial enlarged view of point F in the middle. The partition 120 is provided with a second air passage 122, which connects the second compartment 112 and the first air supply duct 300a. Specifically, an air supply port 323 is provided at the top of the first air duct body 300, through which the first air supply duct 300a connects to the second air passage 122. The refrigeration device 10 includes a second air duct body 400, which is disposed in the second compartment 112 and is provided with a second air supply duct 410. The second air supply duct 410 connects the second compartment 112 and the second air passage 122, allowing cold air within the heat exchanger chamber 1111 to be delivered into the second compartment 112 via the first air supply duct 300a, the second air passage 122, and the second air supply duct 410.

[0105] The second air duct body 400 is provided with a second air outlet 412, which is located in the top area of ​​the second air duct body 400. The second air supply duct 410 is connected to the second chamber 112 through the second air outlet 412. The cold air entering the second air supply duct 410 is blown into the second chamber 112 through the second air outlet 412, so that the cold air is better blown to various areas of the second chamber 112, making the temperature uniform throughout the second chamber 112.

[0106] In this embodiment, the second air passage 122 is connected to the first air supply duct 300a, so that the cold air in the heat exchanger chamber 1111 enters the second air passage 122 through the first air supply duct 300a. That is, within the area of ​​the first chamber 111, the second chamber 112 utilizes the first air supply duct 300a for air supply, rather than designing an independent air supply duct on the first air duct body 300 to deliver the cold air to the second air duct body 400. As a result, only the first air supply duct 300a and the first return air duct 300b are provided on the first air duct body 300, avoiding reducing the air supply space of the first air supply duct 300a and meeting the air supply requirements of the first chamber 111 and the second chamber 112.

[0107] Furthermore, since the first return air duct 300b is disposed in the first air duct body 300, by providing the first air passage 121 on the partition 120, the air in the second chamber 112 directly passes through the first air passage 121 and the first return air duct 300b and enters the heat exchanger chamber 1111. The first return air duct 300b does not occupy the internal space of the second air duct body 400, and there is no need to provide an additional return air duct on the second air duct body 400. The second air duct body 400 is only used to form the second air supply duct 410, so that the volume of the second air duct body 400 can be designed to be smaller, thereby reducing the space occupied by the second chamber 112 and increasing the storage space of the second chamber 112.

[0108] To achieve different refrigeration temperatures for the first storage chamber 1112 and the second chamber 112, please continue to refer to Figure 12 The refrigeration device 10 includes a first damper 700 , which is used to control the connection or isolation between the second air passage 122 and the second air supply duct 410 .

[0109] Specifically, when cooling the first storage chamber 1112 and the second chamber 112 simultaneously, the first damper 700 connects the second air passage 122 with the second air supply duct 410. During the operation of the fan 500, the cold air in the heat exchanger chamber 1111 is sucked into the first air supply duct 300a. Under the continuous action of the fan 500, a portion of the cold air entering the first air supply duct 300a is sent into the first storage chamber 1112 through the first air outlet 315, thereby cooling the first storage chamber 1112. The other portion of the cold air is sent into the second chamber 112 through the second air passage 122, the second air supply duct 410, and the second air outlet 412, thereby cooling the second chamber 112. When the second compartment 112 reaches the required cooling temperature, the temperature in the first storage chamber 1112 is generally not yet lowered to the required temperature. In this case, the first damper 700 is controlled to isolate the second air passage 122 from the second air supply duct 410 , so that the cold air in the heat exchanger chamber 1111 is only delivered into the first storage chamber 1112 through the first air supply duct 300 a and the first air outlet 315 , and does not enter the second compartment 112 .

[0110] Due to the temperature difference between the first chamber 111 and the second chamber 112, if no treatment is done, condensation is likely to occur at the first damper 700, and condenses into frost as the cold wind blows through, hindering the movement of the first damper 700. In this regard, the refrigeration device 10 further includes a heat insulating member 600, such as Figure 12 As shown, the thermal insulation member 600 is arranged in the second air passage 122, the thermal insulation member 600 is provided with an air passage cavity 610, and the first air door 700 is movably arranged in the air passage cavity 610. The first air door 700 is used to expose or block the air passage cavity 610 to connect or isolate the second air supply duct 410 from the second air passage 122.

[0111] By disposing the first damper 700 within the air passage cavity 610 of the thermal insulation member 600, the thermal insulation member 600 isolates the high temperature environment of the second chamber 112 from the low temperature environment of the first chamber 111 (high temperature environment and low temperature environment are relative terms, and the temperatures of both are lower than the temperature outside the refrigeration device 10). At the same time, the first damper 700 can also be made of a thermal insulation material, which can reduce condensation generated at the first damper 700, improve the situation where frost is easily formed at the first damper 700, and avoid affecting the normal movement of the first damper 700.

[0112] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Refrigeration equipment, characterized in that include: The gallbladder body is provided with a first chamber and a second chamber; and A first air duct body is arranged in the first chamber, and the first air duct body and the rear side wall of the duct body define a heat exchanger chamber. A first storage chamber is formed on the side of the first air duct body facing away from the heat exchanger chamber. The first air duct body is provided with a first supply air duct and a first return air duct, the first supply air duct connects the first storage chamber and the heat exchanger chamber, and the first return air duct connects the heat exchanger chamber and the second chamber; wherein, the first supply air duct and the first return air duct are integrally formed, and the first supply air duct and the first return air duct are located on the same side of the heat exchanger chamber.

2. The refrigeration equipment according to claim 1, characterized in that A first return air inlet is provided at one end of the first air duct body close to the second chamber, and the first return air inlet is connected to the first return air duct and the second chamber; A first return air outlet is provided on a side of the first air duct body facing the heat exchanger chamber, and the first return air outlet is close to an end of the first air duct body away from the second chamber, and the first return air outlet connects the first return air duct and the heat exchanger chamber.

3. The refrigeration equipment according to claim 2, characterized in that The first return air outlet extends along a first direction, the length of the first return air outlet along the first direction is H, the length of the first air duct body along the first direction is L, and L / 3≤H≤2L / 3 is satisfied; wherein, the first direction is parallel to the width direction of the duct body.

4. The refrigeration equipment according to any one of claims 1 to 3, characterized in that: The width of the first return air duct along the first direction increases gradually from one end of the first return air duct close to the second compartment to one end of the first return air duct far from the second compartment, and the first direction is parallel to the width direction of the duct body.

5. The refrigeration equipment according to any one of claims 1 to 3, characterized in that: The refrigeration equipment includes a heat exchanger, and the heat exchanger is arranged in the heat exchanger room; The first air duct body includes an air duct front cover and an air duct rear cover. The air duct rear cover is located between the heat exchanger and the air duct front cover. The first return air duct is defined between the air duct rear cover and the air duct front cover.

6. The refrigeration equipment according to any one of claims 1 to 3, characterized in that: Among the walls of the first return air duct formed by the first air duct body, along the circumference of the first return air duct, except for the wall facing the heat exchanger chamber, at least one wall in the remaining directions is provided with a heat insulation layer.

7. The refrigeration equipment according to any one of claims 1 to 3, characterized in that: The first air duct body further includes a guide plate, which is arranged in the first return air duct and extends in a direction away from the second chamber.

8. The refrigeration equipment according to claim 7, characterized in that The first air return duct and the first air supply duct are arranged along a first direction, a first side wall is provided on a side of the first air return duct away from the first air supply duct, and the first direction is parallel to the width direction of the duct body; The distance between the guide plate and the first side wall increases gradually from an end of the guide plate close to the second chamber to an end of the guide plate far from the second chamber.

9. The refrigeration equipment according to any one of claims 1 to 3, characterized in that: The refrigeration device further includes a partition that separates the inner cavity of the bladder body into the first chamber and the second chamber. The partition is provided with a first air passage that connects the second chamber and the first return air duct, so that air in the second chamber flows into the heat exchanger chamber through the first air passage and the first return air duct.

10. The refrigeration equipment according to claim 9, characterized in that: The partition is provided with a second air passage, and the second air passage is connected to the first air supply duct; The refrigeration equipment also includes a second air duct body, which is arranged in the second chamber. The second air duct body is provided with a second air supply duct, and the second air supply duct connects the second chamber and the second air passage, so that the cold air in the heat exchanger chamber is sent into the second chamber through the first air supply duct, the second air passage, and the second air supply duct.

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