Refrigeration appliance

Abstract

The application relates to the field of electrical appliances, and particularly discloses a refrigeration device. The refrigeration device comprises a cabinet, a first chamber, a first air duct assembly located in the first chamber, a fluid passage formed in the first air duct assembly, a first evaporator and a first fan; the fluid passage comprises an air outlet and an air return opening which are in communication with the inside and outside of the fluid passage, and an evaporating cavity for accommodating the first evaporator, the air outlet is located above the air return opening and is in communication with the evaporating cavity; the fluid passage further comprises an air return cavity which extends along the up-down direction and is in communication with the air return opening and the evaporating cavity, the air return opening is located at the upper end of the air return cavity, and the air return cavity and the first evaporator at least partially overlap in the up-down direction. The refrigeration device provided by the application has the air return opening of the first air duct assembly away from the bottom of the fluid passage by a certain distance, so that the cold air at the bottom of the fluid passage is not easy to leak outwards from the air return opening into the first chamber, thus, the food in the first chamber can be prevented from being frozen, and the air return opening is not easy to freeze.

Description

Technical Field

[0001] This invention relates to the field of electrical appliances, and more particularly to a refrigeration device. Background Technology

[0002] In existing refrigeration equipment, a fluid passage is formed in the air duct assembly. The fluid passage includes an air outlet and a return air outlet that connect it to the compartment. An evaporator and a fan are installed in the fluid passage. Under the action of the fan, the gas in the fluid passage that has been cooled by the evaporator can enter the compartment through the air outlet to cool the compartment. Meanwhile, the gas in the compartment can enter the fluid passage through the return air outlet to form an air circulation.

[0003] Cold air in the fluid passage will accumulate at the bottom of the fluid passage. In existing refrigeration equipment, the return air vent is located at the bottom of the air duct assembly. Therefore, the cold air in the fluid passage may leak back into the room through the return air vent, thereby freezing the food in the room. Ice formation is also prone to occur at the return air vent. Summary of the Invention

[0004] The purpose of this invention is to provide a refrigeration device that prevents cold air in the fluid channel from leaking outward from the return air vent.

[0005] To achieve the above objectives, the present invention provides a refrigeration device, including a housing, a first inner liner located inside the housing and forming a first compartment, a first air duct assembly located inside the first compartment, wherein a fluid passage is formed within the first air duct assembly, and the refrigeration device further includes a first evaporator and a first fan.

[0006] The fluid passage includes an air outlet and an air return outlet that connect the inside and outside of it, and an evaporation chamber that houses the first evaporator. The first fan is located in the fluid passage and above the first evaporator. The air outlet is located above the air return outlet and connects to the evaporation chamber.

[0007] The fluid passage also includes a return air cavity that extends in the vertical direction and connects the return air inlet and the evaporation chamber. The return air inlet is located at the upper end of the return air cavity, and the return air cavity and the first evaporator at least partially overlap in the vertical direction.

[0008] As a further improvement of the present invention, the lower end of the return air cavity is connected to the evaporation cavity through the communication port, the position of the return air port is higher than the first evaporator, and the position of the communication port is lower than the first evaporator.

[0009] As a further improvement of the present invention, the fluid passage includes two return air inlets and two return air chambers, the two return air chambers being located on both sides of the evaporation chamber in the lateral direction, and the two return air inlets being located at the upper ends of the two return air chambers.

[0010] As a further improvement of the present invention, the first air duct assembly is connected to the rear side wall of the first inner liner, and the return air vent is disposed on the side facing the lateral direction.

[0011] As a further improvement of the present invention, the air outlet includes a first air outlet located on the upper side of the first air duct assembly, a second air outlet and a third air outlet located on both sides of the first air duct assembly in the lateral direction.

[0012] The first air outlet is arranged facing upwards, and the second and third air outlets are arranged in opposite directions in the lateral direction. The first air duct assembly also includes a guide surface provided at the air outlet. The guide surface is used to tilt and deflect the flow direction of the gas in the fluid passage forward when it flows outward through the air outlet.

[0013] As a further improvement of the present invention, the front side of the first air duct assembly is a front surface corresponding to the fluid passage, and a flow guide channel is provided on the front side of the first air duct assembly near the first fan. One end of the flow guide channel is connected to the fluid passage, and the other end is a blower that connects to the external area of ​​the air duct assembly. The blower is arranged downward and extends forward beyond the front surface.

[0014] As a further improvement of the present invention, the fluid passage further includes a fan cavity, the fan cavity being connected to the air outlet and the evaporation chamber, the first fan being located inside the fan cavity, and the flow guiding channel being connected to the fan cavity.

[0015] As a further improvement of the present invention, the first air duct assembly includes a rear housing and a front housing located in front of the rear housing. The rear housing includes a rear housing wall disposed close to the rear side wall of the first inner liner. The evaporation chamber is formed by recessing forward from the rear housing wall. The fan chamber and the return air chamber are formed by the front housing and the rear housing. An air intake port communicating with the evaporation chamber and the fan chamber is provided on the rear housing.

[0016] As a further improvement of the present invention, the first air duct assembly further includes a cover plate disposed on the front side of the front housing, the air guiding channel includes a first air guiding section formed on the front housing and a second air guiding section formed on the cover plate, the first air guiding section connects the fan cavity and the second air guiding section, and the air outlet is located at the end of the second air guiding section away from the first air guiding section.

[0017] As a further improvement of the present invention, the refrigeration equipment further includes a second compartment and a second evaporator disposed in the second compartment. The refrigeration equipment also includes a compressor, a condenser, and a capillary tube, wherein the compressor, the condenser, the capillary tube, the second evaporator, and the first evaporator are arranged in series.

[0018] Beneficial effects:

[0019] The refrigeration equipment provided by the present invention has a return air inlet of the first air duct component that is a certain distance from the bottom of the fluid passage. Therefore, the cold air at the bottom of the fluid passage is not easily leaked outward from the return air inlet into the first compartment. In this way, the food in the first compartment can be prevented from freezing, and the return air inlet is not easily iced. Attached Figure Description

[0020] Figure 1 This is a front view of a refrigeration device provided in an embodiment of the present invention after the door has been removed;

[0021] Figure 2 This is a side view of a refrigeration device provided according to an embodiment of the present invention;

[0022] Figure 3 This is a perspective view of a first air duct assembly, a first fan, and a first evaporator provided in an embodiment of the present invention;

[0023] Figure 4 This is yet another perspective view of a first air duct assembly, a first fan, and a first evaporator provided in an embodiment of the present invention;

[0024] Figure 5 This is an exploded view of a first air duct assembly, a first fan, and a first evaporator provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a refrigeration system of a refrigeration device provided in an embodiment of the present invention;

[0026] Figure 7 for Figure 1 A front view of the first air duct component in the middle;

[0027] Figure 8 for Figure 7 A portion of the cross-sectional view of the first air duct assembly after it has been cut open from the AA direction;

[0028] Figure 9 for Figure 5 A schematic diagram of the middle and rear shell structure.

[0029] In the picture:

[0030] 100. Refrigeration equipment; 101. Compressor; 102. Condenser; 103. Dryer filter; 104. Capillary tube; 105. Second evaporator; 106. First door body; 107. Second door body;

[0031] 10. Box body;

[0032] 20. First inner liner; 21. First compartment;

[0033] 30. First air duct assembly; 31. Fluid passage; 311. Air outlet; 311a. First air outlet; 311b. Second air outlet; 311c. Third air outlet; 312. Return air outlet; 313. Evaporation chamber; 314. Return air chamber; 314a. Connecting port; 315. Fan chamber; 32. Front surface; 33. Guide channel; 331. Air outlet; 332. First guide section; 333. Second guide section; 34. Front housing; 35. Rear housing; 351. Air intake; 352. Rear housing wall; 353. Edge band; 354. Notch; 36. Cover plate; 361. Lug structure; 37. Baffle strip; 38. Guide surface; 38a. First guide surface; 38b. Second guide surface; 38c. Third guide surface; 38d. Fourth guide surface; 38e. Fifth guide surface.

[0034] 40. First evaporator;

[0035] 50. First fan;

[0036] 60. Second inner liner; 61. Second compartment;

[0037] 70. Sealing strip. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0039] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0040] like Figure 1-5 As shown, an embodiment of the present invention provides a refrigeration device 100, which includes a housing 10, a first inner liner 20 located inside the housing 10 and forming a first chamber 21, and a first air duct assembly 30 located inside the first chamber 21, wherein a fluid passage 31 is formed in the first air duct assembly 30.

[0041] The refrigeration equipment 100 also includes a first evaporator 40 and a first fan 50. The fluid passage 31 includes an air outlet 311 and an air return outlet 312 that connect the inside and outside of it, and an evaporation chamber 313 that houses the first evaporator 40. The first fan 50 is located in the fluid passage 31, and both the air outlet 311 and the air return outlet 312 are connected to the evaporation chamber 313.

[0042] When the first evaporator 40 is working, it can absorb heat to reduce the temperature of the gas in the evaporation chamber 313. When the first fan 50 is working, the low-temperature gas in the evaporation chamber 313 can be discharged to the first chamber 21 through the air outlet 311 to cool the first chamber 21. The gas in the first chamber 21 can enter the evaporation chamber 313 through the return air outlet 312 to form an air circulation.

[0043] In this embodiment, the first fan 50 is located above the first evaporator 40, the air outlet 311 is located above the return air inlet 312, and the fluid passage 31 also includes a return air cavity 314 extending in the vertical direction. The return air cavity 314 connects the return air inlet 312 and the evaporator 313. The return air inlet 312 is located at the upper end of the return air cavity 314, and the return air cavity 314 and the first evaporator 40 overlap at least partially in the vertical direction.

[0044] It should be noted that the up and down direction in this article refers to the position of the refrigeration equipment 100. Figure 1 The vertical direction shown is as follows: the horizontal direction is where the refrigeration device 100 is in the state shown. Figure 1 In the state described above, the left-right and front-back directions are where the refrigeration device 100 is in a certain position. Figure 2 The left and right directions in the described state, where the left side is the front and the right side is the back.

[0045] When the refrigeration equipment 100 cools the first chamber 21, the first fan 50 starts. Gas in the first chamber 21 enters the return air chamber 314 through the return air inlet 312, flows downwards within the return air chamber 314, and then enters the evaporation chamber 313. The gas then flows upwards within the evaporation chamber 313, and finally flows out of the fluid passage 31 through the air outlet 311 back into the first chamber 21. As described above, the return air chamber 314 and the first evaporator 40 at least partially overlap vertically. Therefore, when the gas flows upwards within the evaporation chamber 313, it passes through at least a portion of the first evaporator 40, enabling the first evaporator 40 to cool it.

[0046] When the first fan 50 stops working, because the lower the temperature of the gas, the greater its density, the colder gas in the fluid passage 31 will settle at the bottom of the fluid passage 31. In the above arrangement, the return air vent 312 is located at the upper end of the return air chamber 314, and therefore has a certain distance from the bottom of the fluid passage 31. The cold air at the bottom of the fluid passage 31 is not likely to leak out from the return air vent 312 into the first chamber 21, thus preventing freezing of the food in the first chamber 21. Ice formation is also less likely to occur at the return air vent 312.

[0047] Continue to combine Figure 1 , 6 As shown, the refrigeration equipment 100 also includes a second inner liner 60 disposed within the housing 10 and forming a second compartment 61, and a second evaporator 105 located within the second compartment 61. The second evaporator 105 is used to refrigerate the second compartment 61. Specifically, the components of the refrigeration equipment 100 used for refrigeration also include a compressor 101, a condenser 102, and a capillary tube 104, which are arranged in series.

[0048] The compressor 101, condenser 102, capillary tube 104, second evaporator 105, and first evaporator 40 constitute the refrigeration system of the refrigeration equipment 100. The compressor 101, condenser 102, capillary tube 104, second evaporator 105, and first evaporator 40 are connected in series. When the refrigeration equipment 100 is refrigerating, the refrigerant will flow through the compressor 101, condenser 102, capillary tube 104, second evaporator 105, and first evaporator 40 in sequence.

[0049] The refrigeration process of the refrigeration equipment 100 is as follows: The compressor 101 first compresses the refrigerant into a high-temperature, high-pressure gas. Then, the refrigerant passes through the condenser 102. Under the action of the condenser 102, the high-temperature, high-pressure gas becomes a low-temperature, high-pressure liquid. Then, the refrigerant enters the capillary tube 104. Under the throttling and pressure reduction action of the capillary tube 104, the low-temperature, high-pressure liquid becomes a low-temperature, low-pressure liquid. Then, the refrigerant sequentially enters the second evaporator 105 and the first evaporator 40. In the second evaporator 105 and the first evaporator 40, the refrigerant can absorb a large amount of heat and be converted into a low-temperature, low-pressure gas, thereby reducing the surface temperature of the second evaporator 105 and the first evaporator 40. Then, the refrigerant returns to the compressor 101 and is compressed into a high-temperature, high-pressure gas again, thus enabling the refrigeration cycle.

[0050] As can be seen, since the first evaporator 40 and the second evaporator 105 are connected in series, in this embodiment, when cooling the first compartment 21 and / or the second compartment 61, refrigerant will flow through both the first evaporator 40 and the second evaporator 105 to absorb heat. For example, when cooling the second compartment 61 is required, both the first evaporator 40 and the second evaporator 105 will absorb heat, and the gas in the fluid passage 31 within the first air duct assembly 30 will become cold. If cooling of the first compartment 21 is not required at this time, the first fan 50 can only be controlled to stop. As described above, the return air inlet 312 of the first air duct assembly 30 is a certain distance from the bottom of the fluid passage 31. Therefore, the cold air at the bottom of the fluid passage 31 is not easily leaked outward from the return air inlet 312 into the first compartment 21.

[0051] The refrigeration equipment 100 may also include a dryer filter 103 disposed between the condenser 102 and the capillary tube 104. The compressor 101, condenser 102, capillary tube 104, dryer filter 103, second evaporator 105 and first evaporator 40 are arranged in series. The dryer filter 103 can filter out moisture and impurities in the refrigerant.

[0052] In this embodiment, some of the settings in the second compartment 61 can be the same as those in the first compartment 21. That is, the refrigeration equipment 100 also includes a second air duct assembly and a second fan located in the second compartment 61. The second evaporator 105 and the second fan are located in the fluid passage 31 of the second air duct assembly.

[0053] The compartments in the refrigeration equipment 100 can be divided into a refrigerator compartment, a freezer compartment, and a variable temperature compartment according to different set temperatures. In this embodiment, the first compartment 21 is a refrigerator compartment, and the second compartment 61 is a freezer compartment.

[0054] The refrigeration equipment 100 also includes a first door 106 for opening and closing the first compartment 21 and a second door 107 for opening and closing the second compartment 61. The first door 106 and the second door 107 are specifically connected to the housing 10 via hinges so that they can rotate relative to the housing 10. The user opens and closes the first compartment 21 by rotating the first door 106 and opens and closes the second compartment 61 by rotating the second door 107.

[0055] In this embodiment, the return air inlet 312 is positioned higher than the first evaporator 40, ensuring sufficient distance between the return air inlet 312 and the bottom of the fluid passage 31. The lower end of the return air chamber 314 connects to the evaporation chamber 313 via a connecting port 314a, which is positioned lower than the first evaporator 40. Gas in the first chamber 21, after entering the return air chamber 314 through the return air inlet 312, enters the evaporation chamber 313 through the connecting port 314a, and then flows upwards within the evaporation chamber 313. In this embodiment, the connecting port 314a is positioned lower than the first evaporator 40, allowing the gas to flow sufficiently through the first evaporator 40 as it flows upwards into the evaporation chamber 313. This enables the first evaporator 40 to effectively reduce the temperature of the gas flowing through it. The gas flowing through the first evaporator 40 can then enter the first chamber 21 through the air outlet 311, thus cooling the first chamber 21.

[0056] Specifically, the fluid passage 31 includes two return air inlets 312 and two return air chambers 314. The two return air chambers 314 are located on both sides of the evaporation chamber 313 in the lateral direction, and the two return air inlets 312 are located at the upper ends of the two return air chambers 314. With the above arrangement, the gas in the first chamber 21 can enter the two return air chambers 314 through the two return air inlets 312, and then enter the evaporation chamber 313 through the two return air chambers 314. In this way, the two sides of the first evaporator 40 can cool the two streams of gas entering the evaporation chamber 313 respectively, and the first evaporator 40 is fully utilized.

[0057] In this embodiment, the first air duct assembly 30 is connected to the rear side wall of the first inner liner 20. A shelf for placing food may be provided on the front side of the first air duct assembly 30, and the return air vent 312 is positioned facing laterally. With this configuration, when gas in the fluid passage 31 leaks from the return air vent 312 into the first compartment 21, it will flow downwards along the rear side wall of the first inner liner 20 (e.g., Figure 1 As shown in the diagram, the air flows towards the food located in front of the first air duct assembly 30, rather than directly towards it, thus further reducing the risk of the food being frozen. The first air duct assembly 30 may also be provided with a baffle strip 37 at the return air inlet 312 to limit the leakage of gas in the fluid passage 31 from the return air inlet 312 to the outside.

[0058] As described above, this embodiment is provided with two return air inlets 312, which are arranged in opposite directions in the lateral direction. When the gas in the fluid passage 31 leaks outward from the two return air inlets 312, it flows to both sides in the lateral direction respectively.

[0059] The air outlet 311 includes a first air outlet 311a located on the upper side of the first air duct assembly 30, a second air outlet 311b located on both sides of the first air duct assembly 30 in the lateral direction, and a third air outlet 311c. The first air outlet 311a, the second air outlet 311b, and the third air outlet 311c are arranged around the first fan 50. The first fan 50 is axially inlet and radially outlet. When it is working, it can drive the gas in the fluid passage 31 to be discharged outward through the first air outlet 311a, the second air outlet 311b, and the third air outlet 311c into the first compartment 21. The design of the above-mentioned multiple air outlets 311 can ensure the air volume of the first air duct assembly 30 when the refrigeration equipment 100 is cooling the first compartment 21.

[0060] In this embodiment, the first air outlet 311a is arranged facing upwards, and the second air outlet 311b and the third air outlet 311c are arranged in opposite directions in the lateral direction. The first air duct assembly 30 also includes a guide surface 38 disposed at the air outlet 311. The guide surface 38 is used to tilt and deflect the flow direction of the gas in the fluid passage 31 forward when it flows outward through the air outlet 311. With the above arrangement, the cold air flowing out of the air outlet 311 at a forward tilt first flows forward and then flows downwards to fully flow through the first chamber 21.

[0061] In this embodiment, there are two first air outlets 311a, and one second air outlet 311b and one third air outlet 311c. In other embodiments, the number of first air outlets 311a, second air outlets 311b, and third air outlets 311c may also be other.

[0062] As mentioned above, there are multiple air outlets 311. Therefore, there should also be multiple guide surfaces 38 so that each air outlet 311 is provided with a corresponding guide surface 38.

[0063] Continue to combine Figure 7-8 As shown, the front side of the first air duct assembly 30 is a front surface 32 corresponding to the fluid passage 31. When the temperature inside the fluid passage 31 decreases, the temperature of the front surface 32 also decreases, making it prone to condensation or frost. To address this, in this embodiment, a guide channel 33 is provided on the front side of the first air duct assembly 30 near the first fan 50. One end of the guide channel 33 is connected to the fluid passage 31, and the other end is a blower 331 connecting to the external area of ​​the first air duct assembly 30. The blower 331 is positioned downwards and extends forward beyond the front surface 32. When the first fan 50 is working, some of the gas inside the fluid passage 31 flows out of the fluid passage 31 through the guide channel 33 and then flows downwards across the front surface 32 of the first air duct assembly 30, thereby drying the moisture on the front surface 32 and reducing condensation or frost.

[0064] Multiple flow channels 33 can be provided. When the first fan 50 is working, the gas flowing out from multiple flow channels 33 can more effectively dry the moisture on the front surface 32. In this embodiment, two flow channels 33 are specifically provided, and the two flow channels 33 are located on both sides of the first fan 50 in the lateral direction.

[0065] The fluid passage 31 also includes a fan chamber 315, which connects the air outlet 311 and the evaporation chamber 313. The first fan 50 is located in the fan chamber 315. When the first fan 50 is working, it draws the gas in the evaporation chamber 313 into the fan chamber 315, and then the gas is discharged outward from the fan chamber 315 through the air outlet 311.

[0066] The first air duct assembly 30 includes a rear housing 35 and a front housing 34 located in front of the rear housing 35. The rear housing 35 and the front housing 34 are combined together. The rear housing 35 includes a rear housing wall 352 disposed close to the rear side wall of the first inner liner 20. An evaporation chamber 313 is formed by a forward recess from the rear housing wall 352. A fan chamber 315 and a return air chamber 314 are formed by the front housing 34 and the rear housing 35. An air intake 351 communicating with the evaporation chamber 313 and the fan chamber 315 is provided on the rear housing 35. The front housing 34 can be made of foam material to provide a certain degree of thermal insulation. When manufacturing the first air duct assembly 30, the front housing 34 and the rear housing 35 can be manufactured separately first, and then assembled together. This facilitates the formation of a relatively complex fluid passage 31 within the first air duct assembly 30.

[0067] The first air duct assembly 30 also includes a cover plate 36 located on the front side of the front housing 34. The air guide channel 33 includes a first air guide section 332 formed on the front housing 34 and a second air guide section 333 formed on the cover plate 36. The first air guide section 332 connects the ventilation chamber 315 and the second air guide section 333. The air outlet 331 is located at the end of the second air guide section 333 away from the first air guide section 332. The second air guide section 333 is formed by a lug structure 361 protruding from the front surface 32 of the cover plate 36.

[0068] In this embodiment, the rear housing 35 is connected to the cover plate 36, and the cover plate 36 is connected to the rear side wall of the first inner liner 20. Thus, the entire first air duct assembly 30 can be fixed to the rear side wall of the first inner liner 20. Specifically, the rear housing 35 can be connected to the cover plate 36 by snap-fit, and the cover plate 36 can be connected to the rear side wall of the first inner liner 20 by snap-fit.

[0069] In this embodiment, the rear sidewall of the first inner liner 20 seals the evaporation chamber 313. The refrigeration device 100 may also include a sealing strip 70 disposed between the rear shell wall 352 and the rear sidewall of the first inner liner 20. The sealing strip 70 can prevent the cold air in the evaporation chamber 313 from leaking outward from between the rear shell wall 352 and the rear sidewall of the first inner liner 20.

[0070] The rear housing 35 also includes a edging 353 extending forward from the edge of the rear housing wall 352, which covers the front housing 34. The air outlet 311 and the air return 312 are both formed on the front housing 34, and the edging 353 is provided with a notch 354 corresponding to the air outlet 311 or the air return 312.

[0071] In this embodiment, the guide surface 38 includes a first guide surface 38a, a second guide surface 38b, and a third guide surface 38c formed on the cover plate 36. The first guide surface 38a is located in front of the first air outlet 311a and extends obliquely from rear to front. The second guide surface 38b is located in front of the second air outlet 311b and extends obliquely from rear to front. The third guide surface 38c is located in front of the third air outlet 311c and extends obliquely from rear to front. The guide surface 38 also includes a fourth guide surface 38d and a fifth guide surface 38e formed on the rear housing 35. The fourth guide surface 38d is located behind the second air outlet 311b and extends obliquely from rear to front. The fifth guide surface 38e is located behind the second air outlet 311b and extends obliquely from rear to front.

[0072] In summary, the refrigeration equipment 100 provided by the present invention has a certain distance between the return air vent 312 of the first air duct assembly 30 and the bottom of the fluid passage 31. Therefore, the cold air at the bottom of the fluid passage 31 is not easily leaked outward from the return air vent 312 into the first compartment 21. In this way, the food in the first compartment 21 can be prevented from freezing, and the return air vent 312 is not easily iced.

[0073] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0074] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A refrigeration device, characterized in that, The refrigeration equipment includes a housing (10), a first inner liner (20) located inside the housing (10) and forming a first chamber (21), a first air duct assembly (30) located in the first chamber (21), a fluid passage (31) formed in the first air duct assembly (30), and the refrigeration equipment also includes a first evaporator (40) and a first fan (50). The fluid passage (31) includes an air outlet (311) and an air return outlet (312) connecting its interior and exterior, and an evaporation chamber (313) housing the first evaporator (40). The first fan (50) is located in the fluid passage (31) and above the first evaporator (40). The air outlet (311) is located above the air return outlet (312) and connects to the evaporation chamber (313). The fluid passage (31) further includes a return air cavity (314) extending in the vertical direction and connecting the return air inlet (312) and the evaporation cavity (313). The return air inlet (312) is located at the upper end of the return air cavity (314), and the return air cavity (314) and the first evaporator (40) overlap at least partially in the vertical direction.

2. The refrigeration equipment according to claim 1, characterized in that, The lower end of the return air chamber (314) is connected to the evaporation chamber (313) through the connecting port (314a). The return air port (312) is located higher than the first evaporator (40), and the connecting port (314a) is located lower than the first evaporator (40).

3. The refrigeration equipment according to claim 1, characterized in that, The fluid passage (31) includes two return air inlets (312) and two return air chambers (314). The two return air chambers (314) are located on both sides of the evaporation chamber (313) in the lateral direction, and the two return air inlets (312) are located at the upper ends of the two return air chambers (314).

4. The refrigeration equipment according to claim 3, characterized in that, The first air duct assembly (30) is connected to the rear side wall of the first inner liner (20), and the return air vent (312) is arranged facing the side in the lateral direction.

5. The refrigeration equipment according to claim 4, characterized in that, The air outlet (311) includes a first air outlet (311a) located on the upper side of the first air duct assembly (30), a second air outlet (311b) and a third air outlet (311c) located on both sides of the first air duct assembly (30) in the lateral direction; The first air outlet (311a) is arranged facing upwards, and the second air outlet (311b) and the third air outlet (311c) are arranged in opposite directions in the lateral direction. The first air duct assembly (30) also includes a guide surface (38) provided at the air outlet (311). The guide surface (38) is used to tilt and deflect the flow direction of the gas in the fluid passage (31) when it flows outward through the air outlet (311).

6. The refrigeration equipment according to claim 1, characterized in that, The front side of the first air duct assembly (30) is a front surface (32) corresponding to the fluid passage (31). A guide channel (33) is provided on the front side of the first air duct assembly (30) near the first fan (50). One end of the guide channel (33) is connected to the fluid passage (31), and the other end is a blower (331) connected to the external area of ​​the air duct assembly. The blower (331) is set downward and extends forward beyond the front surface (32).

7. The refrigeration equipment according to claim 6, characterized in that, The fluid passage (31) further includes a fan cavity (315), which connects the air outlet (311) and the evaporation chamber (313). The first fan (50) is located in the fan cavity (315), and the flow guide channel (33) connects to the fan cavity (315).

8. The refrigeration equipment according to claim 7, characterized in that, The first air duct assembly (30) includes a rear housing (35) and a front housing (34) located in front of the rear housing (35). The rear housing (35) includes a rear housing wall (352) disposed close to the rear side wall of the first inner liner (20). The evaporation chamber (313) is formed by recessing forward from the rear housing wall (352). The fan chamber (315) and the return air chamber (314) are formed by the front housing (34) and the rear housing (35). The rear housing (35) has an air intake (351) that connects the evaporation chamber (313) and the fan chamber (315).

9. The refrigeration equipment according to claim 8, characterized in that, The first air duct assembly (30) further includes a cover plate (36) disposed on the front side of the front housing (34), the flow channel (33) includes a first flow section (332) formed on the front housing (34) and a second flow section (333) formed on the cover plate (36), the first flow section (332) connects the fan cavity (315) and the second flow section (333), and the air outlet (331) is located at the end of the second flow section (333) away from the first flow section (332).

10. The refrigeration equipment according to claim 1, characterized in that, The refrigeration equipment also includes a second compartment (61) and a second evaporator (105) disposed in the second compartment (61). The refrigeration equipment also includes a compressor (101), a condenser (102), and a capillary tube (104). The compressor (101), the condenser (102), the capillary tube (104), the second evaporator (105), and the first evaporator (40) are arranged in series.

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