Refrigerator

Abstract

The utility model provides a refrigerator which comprises a refrigerator body, a refrigeration door, an air duct assembly and an air curtain assembly. A refrigerating chamber with an opening in the front side is formed in the refrigerator body; the air curtain assembly comprises an air inlet duct, an air curtain duct, an exhaust duct, an air curtain fan and an air door assembly; the exhaust duct is provided with an exhaust outlet penetrating out of the box body; an inlet of the exhaust duct and an inlet of the air curtain duct are respectively communicated with the air inlet duct; the air door assembly can selectively guide air in the air inlet duct into the air curtain duct and the air exhaust duct, so that an air curtain is selectively formed in the refrigerating chamber. Or, the gas in the refrigerating chamber is discharged out of the refrigerator, so that the peculiar smell in the refrigerator can be effectively discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a refrigerator. Background Art

[0002] For air-cooled refrigerator products, according to existing test tests: when the ambient temperature is 30°C, the temperature inside the refrigerator will rise by 5°C-6°C if the refrigerator door is opened for 10 seconds. If it is opened for 1-2 minutes, the temperature inside the box will reach the external ambient temperature. After closing the refrigerator door, if the compartment temperature is to return to the set temperature, the compressor must continue to run for at least 20 minutes. Under the existing technology, there is a large amount of cold loss in the refrigerator when the door is opened. The refrigerator door opening stage will not only cause huge temperature fluctuations in the compartment, affecting the preservation effect of the food, but also increase the power consumption of the refrigerator accordingly. Therefore, in the prior art, an air curtain structure is set in the refrigerator to isolate the air flow inside and outside the refrigerator after the refrigerator is opened.

[0003] Wind curtain, also known as air curtain, is mainly used above the doorways of shopping malls, theaters, hotels, restaurants, etc. for refrigeration, air conditioning, dust prevention and heat insulation. It can isolate indoor and outdoor air and prevent indoor and outdoor air from exchanging cold and heat. At the same time, it also has the functions of dust prevention, pollution prevention, and mosquito and fly prevention.

[0004] In daily life, users often put vegetables, meat, seafood, fruits and other ingredients into the refrigerator. Due to the wide variety of ingredients, each ingredient has its own unique smell. In order to ensure normal refrigeration performance, the internal gas of the air-cooled refrigerator often works in the form of internal circulation. As time goes by, the smell of various ingredients will accumulate more and more, causing the odor inside the refrigerator to gradually increase. Since the gas circulation of the air-cooled refrigerator is an internal circulation, the odorous gas will always circulate in the refrigerator, making it impossible to remove the odor in the refrigerator compartment. Utility Model Content

[0005] The utility model aims to provide a refrigerator which can effectively discharge the peculiar smell in the refrigerator.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] According to one aspect of the utility model, the utility model provides a refrigerator, comprising a box body, a refrigerating door, an air duct assembly and an air curtain assembly; a refrigerating chamber with a front opening is constructed in the box body; the refrigerating door covers the front side of the box body and is rotatably connected to the box body so as to be able to open or close the refrigerating chamber; the air duct assembly is arranged in the box body to provide cooling to the refrigerating chamber; the air curtain assembly comprises an air inlet duct, an air curtain duct, an air exhaust duct, an air curtain fan and an air door assembly; the air inlet duct, the air curtain duct and The exhaust duct is formed at the top of the refrigerating chamber, and the wind curtain fan is arranged in the air inlet duct; the air inlet duct is provided with an air inlet penetrating the air inlet duct and the refrigerating chamber; the air curtain duct is provided with an air curtain outlet for discharging air downward at the front end of the refrigerating chamber; the exhaust duct is provided with an exhaust outlet penetrating to the outside of the box; the inlet of the exhaust duct and the inlet of the air curtain duct are respectively connected to the air inlet duct; the damper assembly can selectively introduce the gas in the air inlet duct into the air curtain duct or the exhaust duct.

[0008] In some embodiments of the present application, the inlet of the exhaust duct and the inlet of the air curtain duct are respectively connected to the outlet of the air inlet duct, and the damper assembly is arranged at the outlet of the air inlet duct.

[0009] In some embodiments of the present application, the damper assembly includes a damper housing fixed at the outlet of the air inlet duct, two damper baffles, and a driving unit for driving the damper baffles to rotate; two air guide ports are provided on the damper housing, and the two air guide ports are respectively connected to the wind curtain air duct and the exhaust duct; the two damper baffles are respectively arranged corresponding to one of the air guide ports, and the two damper baffles are rotatably arranged on the damper housing so as to be able to open and close the corresponding air guide ports respectively.

[0010] In some embodiments of the present application, the driving unit includes a damper motor, a main transmission gear fixedly connected to the output shaft of the damper motor, two auxiliary gears and two driven gears; the two driven gears are fixed on the rotating shaft of the damper baffle; the two auxiliary gears are respectively meshed with the main transmission gear; the two auxiliary gears are provided with teeth at part of their axial positions for meshing with the driven gears, so that the two damper baffles can be driven to rotate respectively when the damper motor rotates forward and reversely.

[0011] In some embodiments of the present application, the wind curtain fan is a volute fan, and the rotation axis of the fan blades of the volute fan is vertically arranged so that the volute fan rotates in a horizontal plane; the extension direction of the air outlet of the volute fan is tangent to the rotation circle of the fan blades of the volute fan.

[0012] In some embodiments of the present application, an inner liner with an opening on the front side is provided in the box body, and the refrigerating chamber is formed in the inner liner; a top plate is provided in the inner liner, and the top plate covers the top wall of the inner liner, and the air inlet duct and the air curtain duct are formed between the top wall of the inner liner and the top plate.

[0013] In some embodiments of the present application, the upper surface of the top plate is formed with protruding wind guide ribs, and the wind guide ribs are attached to the top wall of the inner liner; the air inlet duct and the wind curtain duct are formed between the wind guide ribs, the top wall of the inner liner and the top plate.

[0014] In some embodiments of the present application, a through window is provided on the top plate, a detachable humidification box is provided in the window, and the humidification box is located in the air duct of the air curtain.

[0015] In some embodiments of the present application, an odor sensor is provided in the cold storage chamber.

[0016] In some embodiments of the present application, a heater for defrosting is provided in the box.

[0017] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0018] In the utility model, the air duct assembly provides coldness to the refrigerating chamber, so that a refrigerating environment is formed in the refrigerating chamber. The air curtain fan drives the air in the refrigerating chamber to pass through the air inlet duct, the air door assembly and the air curtain duct in sequence, so as to form an air curtain at the front end of the refrigerating chamber. The air curtain fan provides power to the cold air in the air curtain duct, increases the air volume of the air curtain outlet, so as to form an air curtain with a larger air volume at the front end of the refrigerating chamber, enhances the heat insulation performance of the air curtain, effectively isolates the air inside and outside the refrigerating chamber, and enhances the refrigeration performance of the refrigerator.

[0019] The exhaust duct is provided with an exhaust port extending outside the refrigerator; the inlet of the exhaust duct and the inlet of the air curtain duct are respectively connected to the air inlet duct; the damper assembly can selectively guide the gas in the air inlet duct to the air curtain duct and the exhaust duct, thereby selectively forming an air curtain in the refrigerator. Alternatively, the gas in the refrigerator is discharged outside the refrigerator, so as to effectively remove the odor in the refrigerator.

[0020] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of a refrigerator embodiment of the utility model.

[0024] Figure 2 It is a structural schematic diagram of a refrigerating chamber in an embodiment of a refrigerator of the utility model.

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure from another perspective of the structure shown.

[0026] Figure 4 yes Figure 2 Schematic cross-section of the structure shown.

[0027] Figure 5 It is a structural schematic diagram of the air curtain assembly of the utility model on the top plate.

[0028] Figure 6 It is a structural schematic diagram of the top plate of the utility model from one viewing angle.

[0029] Figure 7 It is a structural schematic diagram of the top plate of the utility model from another perspective.

[0030] Figure 8 It is a schematic diagram of the connection between the damper assembly and the exhaust duct of the utility model.

[0031] Fig. 9 It is a structural schematic diagram of the damper assembly of the utility model from one perspective.

[0032] Fig.10 It is a structural schematic diagram of the damper assembly of the utility model from another perspective.

[0033] Fig.11 It is a partial structural schematic diagram of the damper assembly of the utility model.

[0034] Fig.12 It is a structural schematic diagram of the air door housing of the utility model.

[0035] The reference numerals in the accompanying drawings are as follows: 100, housing; 110, refrigerator compartment; 120, freezer compartment; 200, air duct assembly; 300, air curtain assembly; 310, air inlet duct; 311, air curtain fan; 312, air inlet; 320, air curtain duct; 321, air curtain outlet; 330, exhaust duct; 340, damper assembly; 341, damper housing; 342, damper baffle; 343, damper motor; 344, main drive gear; 345, auxiliary gear; 346, driven gear; 347, air guide port; 350, humidification box; 400, top plate; 410, air guide ribs; 420, window. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete and will fully convey the concept of the example embodiments to those skilled in the art.

[0037] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0038] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0039] In current life, users often put vegetables, meat, seafood, fruits and other ingredients into the refrigerator during actual use. Due to the wide variety of ingredients, each ingredient has its own unique smell. In order to ensure normal refrigeration performance, the internal gas of the air-cooled refrigerator often works in the form of internal circulation. As time goes by, the smell of various ingredients will gather more and more, causing the odor inside the refrigerator to gradually increase. Since the gas circulation of the air-cooled refrigerator is an internal circulation, the gas with odor will always circulate in the refrigerator, making it impossible to remove the odor in the refrigerator compartment. The present application provides a refrigerator to solve the above technical problems.

[0040] Figure 1 It is a structural schematic diagram of a refrigerator embodiment of the utility model. Figure 2It is a schematic structural diagram of the refrigerating chamber 110 in the refrigerator embodiment of the present invention. Figure 3 yes Figure 2 A schematic diagram of the structure from another perspective of the structure shown. Figure 4 yes Figure 2 Schematic cross-section of the structure shown.

[0041] See also Figures 1 to 4 A refrigerator is an appliance that maintains a constant low temperature to store items. The refrigerator in this embodiment may also be a refrigeration display cabinet or a wine cabinet. The refrigerator is used as an example for the following description. The refrigerator includes a box body 100, an air duct assembly 200 disposed in the box body 100, an air curtain assembly 300 disposed in the box body 100, and a refrigeration assembly disposed in the box body 100.

[0042] A refrigerating chamber 110 and a freezing chamber 120 with front openings are constructed in the box body 100, and the refrigerating chamber 110 and the freezing chamber 120 constitute a refrigerating compartment of the refrigerator. The refrigerating chamber 110 and the freezing chamber 120 are arranged at intervals, and the refrigeration component transfers cold energy to the air in the air duct component 200, so that cold air can be obtained in the air duct component 200. The air duct component 200 can selectively penetrate the refrigerating chamber 110 or the freezing chamber 120 to introduce the air in the air duct component 200 into the refrigerating chamber 110 and / or the freezing chamber 120, so that the refrigerating chamber 110 and the freezing chamber 120 can be cooled respectively to maintain a refrigerated and frozen environment.

[0043] In this embodiment, the refrigerating chamber 110 and the freezing chamber 120 are both provided with an air outlet and an air return port connected with the air duct assembly 200, so that the air in the refrigerating chamber 110 and the freezing chamber 120 can circulate with the air in the air duct assembly 200, respectively, so that the air in the air duct assembly 200 can transfer cold energy to the refrigerating chamber 110 and the freezing chamber 120, respectively. Temperature sensors are provided in the refrigerating chamber 110 and the freezing chamber 120 for detecting the real-time temperature in the refrigerating chamber 110 and the freezing chamber 120.

[0044] The front side of the refrigerator compartment 110 is provided with a refrigerator door (not shown in the figure), which covers the front side of the box body 100 and is rotatably connected to the box body 100 to open or close the refrigerator compartment 110, so that items can be taken in and out of the refrigerator compartment 110. The front side of the freezer compartment 120 is correspondingly provided with a freezer door.

[0045] The connection relationship of the specific structure of the box body 100 can be referred to the structure of the box body 100 in the related art, which will not be described in detail here.

[0046] In this embodiment, the wind curtain assembly 300 is disposed in the refrigerating chamber 110, and is used to form a wind curtain at the front end of the refrigerating chamber 110 after the refrigerating chamber 110 is opened, so as to block the heat exchange inside and outside the refrigerating chamber 110, thereby effectively ensuring the low temperature environment of the refrigerating chamber 110.

[0047] The air duct assembly 200 is disposed in the box body 100 and can provide cooling to the refrigerating chamber 110 and the freezing chamber 120. The specific structure and position relationship of the air duct assembly 200 refer to the structure and position relationship of the air duct assembly 200 in the related art, which will not be repeated here.

[0048] The refrigeration component is used to release the heat in the refrigerator to the outside environment, and to provide coldness to the refrigeration room to maintain the low temperature environment in the refrigeration room. The refrigeration component includes components such as a compressor, a condenser, an evaporator, and a capillary. The compressor, the condenser, the capillary, and the evaporator are connected in sequence, and the outlet of the evaporator is connected to the inlet of the compressor, thereby forming a channel for the circulation of the refrigerant in the compressor, the condenser, the capillary, and the evaporator.

[0049] The high-temperature and high-pressure gaseous refrigerant in the compressor is transported to the condenser, where it releases heat to the external environment, thereby converting the high-temperature and high-pressure gaseous refrigerant into a low-temperature and high-pressure liquid refrigerant. The low-temperature and high-pressure liquid refrigerant is converted into a low-temperature and low-pressure liquid refrigerant through the throttling and decompression effect of the capillaries. The low-temperature and low-pressure liquid refrigerant is transported to the evaporator and the air in the air duct assembly 200 for heat exchange.

[0050] An evaporation chamber for placing an evaporator is provided in the box 100. The evaporation chamber can be located in the air duct assembly 200 or can be provided separately. A heater is provided in the evaporation chamber. The heater is used to heat the air in the evaporation chamber for defrosting.

[0051] Figure 5 It is a schematic structural diagram of the air curtain assembly 300 of the utility model on the top plate 400. Figure 6 It is a structural schematic diagram of the top plate 400 of the utility model from one viewing angle. Figure 7 It is a structural schematic diagram of the top plate 400 of the utility model from another perspective.

[0052] See also Figures 1 to 7 In this embodiment, the air curtain assembly 300 is disposed in the refrigerating chamber 110 and is located at the top of the refrigerating chamber 110 .

[0053] In one embodiment, the air curtain assembly 300 is disposed outside the refrigerating chamber 110 and is located outside the top of the refrigerating chamber 110 .

[0054] The air curtain assembly 300 may include an air inlet 310, which is used to communicate with the refrigerating chamber 110 so as to suck the air in the refrigerating chamber 110 into the air inlet 310. An air curtain fan 311 is provided in the air inlet 310 so as to suck the air in the refrigerating chamber 110 into the air inlet 310. The air inlet 310 is provided with an air inlet 312 that runs through the air inlet 310 and the refrigerating chamber 110.

[0055] The air curtain assembly 300 may include an air curtain duct 320, and the air curtain duct 320 is provided with an air curtain outlet 321 for discharging air downward at the front end of the refrigerating chamber 110, and the inlet of the air curtain duct 320 is respectively connected to the air inlet duct 310, so that the gas in the air inlet duct 310 can enter the air curtain duct 320. The gas in the air curtain duct 320 is discharged from the air curtain outlet 321, so that an air curtain can be formed at the front end of the refrigerating chamber 110.

[0056] The air curtain assembly 300 may include an exhaust duct 330, the inlet of which is connected to the air inlet duct 310. The exhaust duct 330 is provided with an exhaust port (not shown) extending to the outside of the housing 100, so that the gas in the air inlet duct 310 can be discharged to the outside of the refrigerator through the exhaust duct 330. The gas in the refrigerating chamber 110 can be discharged to the outside of the refrigerator through the air inlet duct 310 and the exhaust duct 330 in sequence, so that the odorous gas in the refrigerating chamber 110 can be discharged to the outside of the refrigerator, thereby achieving the effect of removing the odor.

[0057] The box body 100 is provided with an inner liner with an opening at the front side, and a refrigerating chamber 110 is formed in the inner liner. A top plate 400 is provided in the inner liner, and the top plate 400 covers the top wall in the inner liner, and an air inlet duct 310 and an air curtain duct 320 are formed between the top wall of the inner liner and the top plate 400.

[0058] The upper surface of the top plate 400 is formed with protruding air guide ribs 410 , which are attached to the top wall of the inner liner; an air inlet duct 310 and an air curtain duct 320 are formed between the air guide ribs 410 , the top wall of the inner liner and the top plate 400 .

[0059] The air curtain duct 320 is formed at the top of the refrigerating chamber 110, the air curtain fan 311 is arranged in the air inlet duct 310, and a plurality of through holes are arranged on the top plate 400 to respectively form an air curtain outlet 321 and an air inlet 312 of the air inlet duct 310. The air curtain outlet 321 and the air inlet 312 pass through the refrigerating chamber 110, and the air inlet 312 of the air inlet duct 310 is located behind the air curtain outlet 321, so that the air curtain assembly 300 can drive the air in the refrigerating chamber 110 to circulate between the air curtain assembly 300 and the refrigerating chamber 110, which can play a role in making the temperature in the refrigerating chamber 110 uniform.

[0060] In this embodiment, the air inlet 312 of the air inlet duct 310 is disposed in the refrigerating chamber 110, and the air used to form the air curtain of the air curtain duct 320 comes from the refrigerating chamber 110, rather than the air duct assembly 200, which effectively avoids the influence of the gas in the air duct assembly 200 on the air curtain at the front side of the refrigerating chamber 110. The air curtain outlet 321 is disposed at the front end of the refrigerating chamber 110, and the air curtain outlet 321 discharges air downwardly, so as to form an air curtain at the front end of the refrigerating chamber 110.

[0061] In this embodiment, the air inlet 312 of the air inlet duct 310 is adjacent to the rear wall of the refrigerating chamber 110, so that the air curtain assembly 300 can drive the air flow in the refrigerating chamber 110 to the maximum extent and range, making the temperature in the refrigerating chamber 110 more uniform.

[0062] In this embodiment, the wind curtain fan 311 is a volute fan, and the rotation axis of the fan blades of the volute fan is vertically arranged so that the volute fan rotates in a horizontal plane; the extension direction of the air outlet of the volute fan is tangent to the rotation circle of the fan blades of the volute fan. The rotation axis of the volute fan is vertically arranged so that the fan blades of the volute fan are horizontally arranged, so that the height of the volute fan in the vertical direction is narrower, and after the volute fan is arranged in the air inlet 310, the space occupied in the vertical direction is smaller, so that on the basis of ensuring the installation of the volute fan, the lower surface of the top plate 400 has a smaller distance relative to the upper wall of the cold storage room 110, and the wind curtain assembly 300 occupies a smaller volume of the cold storage room 110, so that the cold storage room 110 has a larger effective volume.

[0063] The air inlet of the volute fan is arranged vertically, and the air inlet 312 is located directly below the air inlet of the volute fan to facilitate the volute fan to draw air from the cold storage chamber 110, so that the path from the air in the cold storage chamber 110 to the air inlet 312 of the volute fan is shorter and the kinetic energy loss is smaller, thereby making the air output at the wind curtain outlet 321 larger.

[0064] Figure 8 It is a schematic diagram of the connection between the damper assembly 340 and the exhaust duct 330 of the utility model. Fig. 9 It is a structural schematic diagram of the damper assembly 340 of the utility model from one perspective. Fig.10 It is a structural schematic diagram of the damper assembly 340 of the utility model from another perspective. Fig.11 It is a partial structural schematic diagram of the damper assembly 340 of the utility model. Fig.12 It is a structural schematic diagram of the damper housing 341 of the utility model.

[0065] See also Figures 2 to 12 The wind curtain assembly 300 may include a damper assembly 340 , and the inlet of the exhaust duct 330 and the inlet of the wind curtain duct 320 are respectively connected to the air inlet duct 310 ; the damper assembly 340 can selectively introduce the gas in the air inlet duct 310 into the wind curtain duct 320 or the exhaust duct 330 .

[0066] In this embodiment, the inlet of the exhaust duct 330 and the inlet of the wind curtain duct 320 are respectively connected to the outlet of the air inlet duct 310, and the damper assembly 340 is arranged at the outlet of the air inlet duct 310 so as to selectively introduce the gas in the air inlet duct 310 into the wind curtain duct 320 or the exhaust duct 330.

[0067] The damper assembly 340 may include a damper housing 341 fixed at the outlet of the air inlet duct 310, and two air guide ports 347 are provided on the damper housing 341, and the two air guide ports 347 correspond to the exhaust duct 330 and the air curtain duct 320 respectively. In some embodiments, two damper housings 341 are provided, and one air guide port 347 is provided on each of the two damper housings 341.

[0068] The damper assembly 340 may include two damper baffles 342, which are rotatably disposed on the damper housing 341 to respectively open and close the corresponding air guide ports 347, thereby controlling the formation of a wind curtain in the refrigerating chamber 110 or discharging the gas in the refrigerating chamber 110.

[0069] The damper assembly 340 may include a driving unit for driving the damper baffle 342 to rotate, and the driving unit is used to control the rotation of the damper baffle 342 to control the opening and closing of the corresponding air guide port 347.

[0070] In this embodiment, the driving unit may include a damper motor 343 for driving the damper baffle 342 to rotate.

[0071] The driving unit may further include a main transmission gear 344 fixedly connected to the output shaft of the damper motor 343. The main transmission gear 344 is transmission-connected to the damper baffle 342 to drive the damper baffle 342 to rotate.

[0072] The driving unit may further include two auxiliary gears 345 , the two auxiliary gears 345 are respectively meshed with the main transmission gear 344 , and the two auxiliary gears 345 are respectively transmission-connected to a damper baffle 342 to drive the corresponding damper baffle 342 to rotate.

[0073] The driving unit may also include two driven gears 346, which are fixed on the rotating shaft of the damper baffle 342; two auxiliary gears 345 are respectively meshed with the main transmission gear 344; the two auxiliary gears 345 are provided with teeth at a part of their axial position for meshing with the driven gears 346, so as to drive the two damper baffles 342 to rotate respectively when the damper motor 343 rotates forward and reversely.

[0074] The two driven gears 346 are formed with a meshing area (an area provided with teeth) and a smooth area (an area not provided with teeth) in the axial direction.

[0075] In this embodiment, a through window 420 is provided on the top plate 400, and a detachable humidification box 350 is provided in the window 420. The humidification box 350 is located in the air curtain duct 320 for humidifying the refrigerating chamber 110. The humidification box 350 is detachably connected so that humidification water can be added in the humidification box 350.

[0076] An odor sensor is provided in the refrigerator compartment 110 to detect the odor component or odor concentration in the refrigerator compartment 110 to confirm the odor concentration in the refrigerator. The odor sensor can record the odor concentration inside the refrigerator compartment 110 and detect the odor situation inside the refrigerator compartment 110 in real time. When the odor sensor detects that the odor concentration inside the compartment is too high, it will send a signal to perform self-cleaning to remove the odor in the refrigerator compartment 110.

[0077] In the present invention, the air duct assembly 200 provides cold air to the refrigerating chamber 110, so that a refrigerating environment is formed in the refrigerating chamber 110. The air curtain fan 311 drives the air in the refrigerating chamber 110 to pass through the air inlet duct 310, the damper assembly 340 and the air curtain duct 320 in sequence, so as to form an air curtain at the front end of the refrigerating chamber 110. The air curtain fan 311 provides power to the cold air in the air curtain duct 320, increases the air volume of the air curtain outlet 321, so as to form an air curtain with a larger air volume at the front end of the refrigerating chamber 110, enhance the heat insulation performance of the air curtain, effectively isolate the air inside and outside the refrigerating chamber 110, and enhance the refrigeration performance of the refrigerator.

[0078] The exhaust duct 330 is provided with an exhaust port extending to the outside of the housing 100; the inlet of the exhaust duct 330 and the inlet of the air curtain duct 320 are respectively connected to the air inlet duct 310; the damper assembly 340 can selectively introduce the gas in the air inlet duct 310 into the air curtain duct 320 and the exhaust duct 330, thereby selectively forming an air curtain in the refrigerating chamber 110. Alternatively, the gas in the refrigerating chamber 110 is discharged to the outside of the refrigerator, so as to effectively discharge the odor in the refrigerator.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this specification, the description of the reference terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of contradiction, technicians in this field can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples.

[0081] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A refrigerator, characterized in that: include: A box body, in which a refrigerating chamber with an opening at the front is constructed; A refrigerating door, covering the front side of the box body and rotatably connected to the box body so as to be able to open or close the refrigerating chamber; An air duct assembly is disposed in the box body and is used to provide cooling to the refrigerating chamber; An air curtain assembly, comprising an air inlet duct, an air curtain duct, an exhaust duct, an air curtain fan and an air door assembly; the air inlet duct, the air curtain duct and the exhaust duct are all formed at the top of the refrigerating chamber, the air curtain fan is arranged in the air inlet duct; the air inlet duct is provided with an air inlet penetrating the air inlet duct and the refrigerating chamber; the air curtain duct is provided with an air curtain outlet for downward air discharge at the front end of the refrigerating chamber; Among them, the exhaust duct is provided with an exhaust port extending through the outside of the box; the inlet of the exhaust duct and the inlet of the wind curtain duct are respectively connected to the air inlet duct; the damper assembly can selectively introduce the gas in the air inlet duct into the wind curtain duct or the exhaust duct.

2. The refrigerator according to claim 1, characterized in that: The inlet of the exhaust duct and the inlet of the air curtain duct are respectively connected to the outlet of the air inlet duct, and the damper assembly is arranged at the outlet of the air inlet duct.

3. The refrigerator according to claim 2, characterized in that: The damper assembly includes a damper housing fixed at the outlet of the air inlet duct, two damper baffles, and a driving unit for driving the damper baffles to rotate; two air guide ports are provided on the damper housing, and the two air guide ports are respectively connected to the wind curtain air duct and the exhaust duct; the two damper baffles are respectively arranged corresponding to one of the air guide ports, and the two damper baffles are rotatably arranged on the damper housing so as to be able to open and close the corresponding air guide ports respectively.

4. The refrigerator according to claim 3, characterized in that: The driving unit includes a damper motor, a main transmission gear fixedly connected to the output shaft of the damper motor, two auxiliary gears and two driven gears; the two driven gears are fixed on the rotating shaft of the damper baffle; the two auxiliary gears are respectively meshed with the main transmission gear; the two auxiliary gears are provided with teeth at a part of their axial positions for meshing with the driven gears, so that the two damper baffles can be driven to rotate respectively when the damper motor rotates forward and reversely.

5. The refrigerator according to claim 1, characterized in that: The wind curtain fan is a volute fan, and the rotation axis of the fan blades of the volute fan is vertically arranged so that the volute fan rotates in a horizontal plane; the extension direction of the air outlet of the volute fan is tangent to the rotation circle of the fan blades of the volute fan.

6. The refrigerator according to claim 5, characterized in that: An inner liner with an opening at the front is arranged in the box body, and the refrigerating chamber is formed in the inner liner; a top plate is arranged in the inner liner, and the top plate covers the top wall in the inner liner, and the air inlet duct and the air curtain duct are formed between the top wall of the inner liner and the top plate.

7. The refrigerator according to claim 6, characterized in that: The upper surface of the top plate is formed with protruding air guide ribs, and the air guide ribs are attached to the top wall of the inner liner; the air inlet duct and the air curtain duct are formed between the air guide ribs, the top wall of the inner liner and the top plate.

8. The refrigerator according to claim 6, characterized in that: A through window is provided on the top plate, a detachable humidification box is arranged in the window, and the humidification box is located in the air duct of the air curtain.

9. The refrigerator according to claim 1, characterized in that: An odor sensor is arranged in the refrigerating chamber.

10. The refrigerator according to claim 1, characterized in that: A heater for defrosting is arranged in the box.

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