Refrigerator

Abstract

The utility model provides a refrigerator, including refrigerator main part, the refrigerator main part is formed with refrigeration space in, and refrigeration space is equipped with sealed fresh -keeping room, and sealed fresh -keeping room includes the room shell with accommodation space and food container, and food container can be pulled to realize its switching between food fresh -keeping position and food taking and placing position via the import and export of accommodation space, when food container is at food fresh -keeping position, import and export can be closed by food container, and accommodation space has the controllable on -off exhaust passage, and the exhaust passage is connected with the outside space of refrigerator main part, and the exhaust passage is equipped with exhaust fan, and exhaust fan can export the peculiar smell gas in accommodation space to the outside space and form negative pressure in accommodation space when operating, the utility model can prevent the peculiar smell of excessive concentration to spread in refrigeration space, forms the negative pressure environment in the region of accommodation space, prevents the peculiar smell to spread in other food storage room in refrigeration space.

Description

Technical Field

[0001] This utility model belongs to the field of refrigerator design technology, and specifically relates to a refrigerator. Background Technology

[0002] Refrigerators have become an essential household appliance for every family. In actual use, various kinds of food are usually placed together in the refrigerator compartment, which can lead to cross-contamination of odors between different foods. Furthermore, food left for a long time can produce odorous gases such as methanethiol, hydrogen sulfide, acetaldehyde, and xylene.

[0003] In related technologies, to prevent odor cross-contamination between different foods within the same refrigeration space of a refrigerator, odor-removing components such as activated carbon filters are often installed in the refrigeration space. However, this method suffers from drawbacks: the odor-removing components are easily saturated and require frequent replacement; the odor diffusion path is not blocked (for example, cooked foods with strong odors continue to release volatile substances during storage, resulting in odor residue), and cross-contamination still occurs. To further overcome these shortcomings, existing technologies incorporate independent structures within the same refrigeration space (e.g., the refrigerator compartment), separate from other storage compartments. This allows odor-prone foods to be stored separately in these independent compartments, effectively preventing odor diffusion during storage and thus reducing the likelihood of cross-contamination with foods in other compartments within the same refrigeration space. However, when these independent compartments are opened (e.g., a drawer is pulled out), odors will diffuse from these compartments to other compartments, and cross-contamination between different foods is still not effectively eliminated. Utility Model Content

[0004] Therefore, this utility model provides a refrigerator that overcomes the shortcomings of related technologies where, when an independently set storage compartment inside the refrigerator is opened (e.g., a storage drawer is pulled out), odors will spread from that storage compartment to other compartments, and the cross-contamination of odors between different foods is still not effectively eliminated.

[0005] To address the aforementioned problems, this utility model provides a refrigerator, comprising a refrigerator body with a refrigeration space within it. The refrigeration space contains at least two food storage compartments, one of which is a sealed fresh-keeping compartment. The sealed fresh-keeping compartment includes a compartment shell with a storage space and a food container. The storage space has an inlet and outlet, and the food container has a food preservation position and a food retrieval position. The food container can be pulled out via the inlet and outlet to switch between these positions. When the food container is in the food preservation position, the inlet and outlet can be sealed by the food container. A cooling airflow duct is formed within the refrigerator body and is controllably connected to the storage space. The storage space has a controllably openable exhaust channel connected to the external space of the refrigerator body. An exhaust fan is installed within the exhaust channel. When the exhaust fan operates, it can expel odorous gases from the storage space to the external space and create negative pressure within the storage space.

[0006] In some embodiments, the exhaust duct is formed on the outer shell of the compartment.

[0007] In some embodiments, the exhaust outlet of the exhaust duct has an exhaust damper capable of controlling the opening and closing of the exhaust outlet.

[0008] In some embodiments, the exhaust duct is also equipped with an odor adsorption element.

[0009] In some embodiments, the odor adsorbent is a porous material coated with active copper ions.

[0010] In some embodiments, a cooling plate is provided inside the outer shell of the compartment, which can exchange heat with the cooling airflow in the cooling airflow duct to achieve radiative cooling within the accommodating space.

[0011] In some embodiments, a cooling channel is formed between the outer shell of the compartment and the cold guide plate, which communicates with the cooling airflow duct. The cooling airflow duct is located at the rear of the refrigerator body. The cooling channel extends from the rear of the refrigerator body to the front and forms an air inlet on the outer shell of the compartment near the front of the refrigerator body, which communicates with the accommodating space. The air inlet is provided with an air inlet damper that can control its opening and closing. The exhaust channel is located on the outer shell of the compartment near the rear of the refrigerator body.

[0012] In some embodiments, the outer shell of the compartment is further provided with a steam generating device, the steam generating device having a steam nozzle located within the accommodating space.

[0013] In some embodiments, the inner wall surfaces of the food container and the outer shell of the compartment are coated with a photocatalytic material, and the accommodating space is also equipped with an ultraviolet lamp.

[0014] In some embodiments, a VOC sensor is also provided within the accommodating space.

[0015] The refrigerator provided by this utility model has the following beneficial effects: By setting up a controllable ventilation channel between the sealed fresh-keeping compartment and the external environment, when the food container is in the food preservation position, the system can control the ventilation channel to connect with the external environment and the cooling airflow duct to the compartment when the odor concentration is high. This controls the operation of the exhaust fan in the controller, driving the odor in the compartment to be discharged from the refrigerator in a timely manner, preventing excessively high concentrations of odor from spreading and mixing with other odors in the refrigeration space. At the same time, when the food container is in the food removal position, the system controls the operation of the aforementioned exhaust fan so that the odor airflow in the compartment can be discharged to the outside of the refrigeration space through the ventilation channel, creating a negative pressure environment in the compartment area, preventing the odor from spreading and mixing with other food storage compartments in the refrigeration space at this time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a simplified schematic diagram of the internal structure of the refrigerator in an embodiment of this utility model. Figure 2 yes Figure 1 A schematic diagram of the internal structure of the sealed fresh-keeping compartment (food containers are not shown in the diagram). Figure 3 yes Figure 2 A three-dimensional structural diagram (partial cross-section) of the sealed food preservation compartment in the middle. Figure 4 yes Figure 2 A front view of a sealed food storage room from one perspective; Figure 5 This is a schematic diagram of the control logic of an odor removal method according to another embodiment of the present invention; Figure 6 This is a schematic diagram of the control logic of an odor removal method according to another embodiment of this utility model; Figure 7This is a schematic diagram of the user selection interface for the types of food stored in the sealed preservation compartment of the refrigerator of this utility model, as shown on the display panel in one embodiment.

[0018] The attached figures are labeled as follows: 1. Refrigerator body; 11. Cooling airflow duct; 12. Refrigeration compartment door; 13. Evaporator; 14. Evaporator fan; 15. Compressor; 2. Sealed fresh-keeping compartment; 21. Compartment shell; 211. Cold guide plate; 212. Cooling airflow duct; 2121. Air inlet; 2122. Air inlet damper; 22. Inlet and outlet; 23. Exhaust duct; 231. Exhaust fan; 232. Odor adsorption component; 233. Exhaust damper; 3. Steam generator; 31. Steam nozzle; 4. Ultraviolet lamp; 5. VOC sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0023] See also Figures 1 to 7 As shown, according to an embodiment of the present invention, a refrigerator is provided, including a refrigerator body 1, within which a refrigeration space (not indicated in the figure) is formed. It is understood that this refrigeration space is a relatively enclosed space with an opening for users to access and store food. The opening is provided with an openable and closable refrigeration space door 12 (e.g., a refrigerator body 12). Figure 1As shown in the figure, the refrigeration space has at least two food storage compartments, one of which is a sealed fresh-keeping compartment 2. The sealed fresh-keeping compartment 2 includes a compartment shell 21 with a accommodating space (not shown in the figure) and a food container (not shown in the figure). Generally, the aforementioned food container can adopt a drawer box structure. The accommodating space has an inlet and outlet 22. The food container has a food preservation position and a food retrieval position. The food container can be pulled out through the inlet and outlet 22 to switch between the food preservation position and the food retrieval position. When the food container is in the food preservation position, the inlet and outlet 22 can be closed by the food container. A cooling airflow duct 11 is formed inside the refrigerator body 1. An evaporator 13 and an evaporation fan 14 are provided in the cooling airflow duct 11. The cooling airflow duct 11 is controllably connected to the accommodating space and can... It is understood that the aforementioned cooling airflow duct 11 is also connected to other food storage compartments within the aforementioned refrigeration space. The accommodating space has a controllable exhaust duct 23, which is connected to the external space (i.e., the external environment space) of the refrigerator body 1. An exhaust fan 231 is installed in the exhaust duct 23. When the exhaust fan 231 is running, it can exhaust the odorous gas in the accommodating space to the external space and create a negative pressure in the accommodating space. It should be noted that the negative pressure here refers to the fact that the gas pressure in the accommodating space is lower than the atmospheric pressure in the environment space where the refrigerator body 1 is located during the operation of the exhaust fan 231. The specific difference is based on the fundamental principle of ensuring that the odor in the accommodating space will not escape and diffuse to the refrigeration space outside the accommodating space. It can be determined through experiments, and the negative pressure value can be controlled and adjusted by changing the operating speed of the exhaust fan 231.

[0024] In this technical solution, by setting up an exhaust duct 23 that allows for controllable connection and disconnection between the storage space of the sealed fresh-keeping compartment 2 and the external environment, when the food container is in the food fresh-keeping position, the exhaust duct 23 can be connected to the external environment and the cooling airflow duct 11 can be connected to the storage space when the odor concentration in the storage space is high. The exhaust fan 231 in the controller is also connected to the storage space to drive the odor in the storage space to be discharged from the refrigerator in a timely manner, preventing the excessively high concentration of odor from spreading and mixing with other odors in the refrigeration space. At the same time, when the food container is in the food removal and placement position, the exhaust fan 231 is controlled to operate so that the odor airflow in the storage space can be discharged to the outside of the refrigeration space through the exhaust duct 23, forming a negative pressure environment in the storage space area, preventing the odor from spreading and mixing with other food storage rooms in the refrigeration space at this time.

[0025] In some embodiments, the exhaust duct 23 is formed on the compartment housing 21. It is understood that, preferably, the exhaust outlet of the exhaust duct 23 is located in the rear area of ​​the refrigerator body 1 to reduce discomfort caused to the user by direct airflow.

[0026] The on / off control of the exhaust duct 23 can be achieved in various feasible ways. In a specific embodiment, the exhaust outlet of the exhaust duct 23 has an exhaust damper 233 that can control the on / off of the exhaust outlet. Setting an exhaust damper 233 at the exhaust outlet of the exhaust duct 23 can simplify the structure of the exhaust duct 23. It is understood that the opening and closing of the exhaust damper 233 is driven by a matching motor.

[0027] In some embodiments, the exhaust duct 23 is also provided with an odor adsorbent 232, which can remove the odor from the odor airflow discharged from the containment space before discharging it to the external environment, thus preventing odor pollution to the external environment. It should be noted that in this utility model, the odor adsorbent 232 is set in the exhaust duct 23, which can utilize the active suction effect of the exhaust fan 231 to actively remove the odor airflow in the containment space, resulting in a better odor removal effect.

[0028] In some embodiments, the odor adsorbent 232 is a porous material coated with active copper ions, such as activated carbon coated with active copper ions. The odor adsorbent 232 uses the adsorption effect of the porous material to adsorb odor molecules into it and simultaneously uses the catalytic effect of the active copper ions to efficiently decompose the adsorbed odor molecules and release them into the external environment. Because the adsorption and catalytic decomposition of odor molecules are carried out simultaneously, the odor adsorbent 232 has a long service life.

[0029] In some embodiments, a cooling plate 211 is provided inside the outer shell 21 of the compartment. The cooling plate 211 can exchange heat with the cooling airflow in the cooling airflow duct 11 to achieve radiative cooling in the accommodating space. That is, in this utility model, the food in the sealed fresh-keeping compartment 2 is refrigerated and preserved by the heat radiation of the cooling plate 211 instead of the air-cooled through-flow method for temperature regulation. This can prevent the odor airflow in the compartment from spreading to other compartments in the refrigerator with the cooling airflow, and further reduce the chance of odor diffusion.

[0030] In one specific embodiment, see [link to specific implementation details]. Figure 1 As shown, a cooling channel 212 is formed between the compartment shell 21 and the cold guide plate 211, which is connected to the cooling airflow duct 11. The cooling airflow duct 11 is located at the back of the refrigerator body 1. The cooling channel 212 extends from the back of the refrigerator body 1 to the front and forms an air inlet 2121 on the compartment shell 21 near the front of the refrigerator body 1, which is connected to the accommodating space (the air inlet here is relative to the state of entering the accommodating space). The air inlet 2121 is provided with an air inlet damper 2122 that can control its opening and closing. The exhaust channel 23 is located on the compartment shell 21 near the back of the refrigerator body 1.

[0031] In this technical solution, the connection between the cooling channel 212 and the accommodating space, i.e., the aforementioned air inlet 2121, is located on the front side of the accommodating space near the refrigerator body 1, while the exhaust channel 23 is located on the rear side near the refrigerator body 1. This allows for more efficient removal of odorous airflow from the accommodating space when the exhaust fan 231 is operating. It is understood that the aforementioned air inlet damper 2122 is equipped with a rotary motor capable of opening and closing it. When the exhaust fan 231 is not rotating, the air inlet damper 2122 should be in a closed state; conversely, it should be in an open state.

[0032] In some embodiments, the outer shell 21 of the compartment is also provided with a steam generating device 3. The steam generating device 3 has a steam nozzle 31 located in the accommodating space. When steam deodorization is required, the steam generating device 3 is controlled to generate high-temperature steam and spray it into the accommodating space through the steam nozzle 31 (multiple nozzles can be provided). The aforementioned steam generating device 3 can be any existing device capable of forming water mist (i.e. steam) at a preset temperature. In a specific embodiment, the aforementioned preset temperature is about 80°C.

[0033] In this technical solution, high-temperature steam can effectively soften odor molecules adhering to the inner walls and crevices of the storage space and food container, thereby achieving efficient removal of residual odors. Then, the airflow driven by the aforementioned exhaust fan 231 is used to efficiently dry the storage space. This ensures that food with different odors (or no odor) does not cross-contaminate within the food container and storage space, thus improving the quality of food storage.

[0034] In some embodiments, the food container and the inner wall of the compartment shell 21 are coated with a photocatalytic material, and the accommodating space is also provided with an ultraviolet lamp 4. Specifically, the ultraviolet lamp 4 is fixed on the top inner wall of the compartment shell 21. Specifically, the aforementioned photocatalytic material can be a semiconductor such as titanium dioxide with a particle size of less than 100 nm. Under the irradiation of the ultraviolet lamp 4, it can decompose odor molecules, thereby reducing the probability of odor molecules adhering to the inner wall of the compartment.

[0035] It is understandable that, in order to detect the odor concentration in the storage space in real time, a VOC sensor 5 is also provided in the storage space. It is also understandable that the refrigerator's control unit can receive the real-time detection results of the VOC sensor 5, perform corresponding calculations, and issue corresponding control execution commands.

[0036] According to embodiments of this utility model, in conjunction with reference to... Figure 5 and Figure 6As shown, a method for removing and controlling odors in a refrigerator as described above is also provided, comprising the following steps: Obtain the position of the food container; When the food container is in the food preservation position, the speed of the exhaust fan 231 in the exhaust duct 23 is adjusted according to the real-time odor concentration Cs in the containment space. Specifically, when Cs < C0, the speed of the exhaust fan 231 is controlled to be 0, and the cooling airflow duct 11 is disconnected from the containment space and the exhaust duct 23 is disconnected from the external space; when C0 ≤ Cs ≤ C1, the speed of the exhaust fan 231 is controlled to be a first speed V1, and the cooling airflow duct 11 is controlled to be disconnected from the external space. 1. The accommodating space is connected to the exhaust duct 23, and the exhaust duct 23 is connected to the external space. When C1 < Cs ≤ C2, the speed of the exhaust fan 231 is controlled to the second speed V2, and the cooling airflow duct 11 is connected to the accommodating space, and the exhaust duct 23 is connected to the external space. When Cs > C2, the speed of the exhaust fan 231 is controlled to the third speed V3, and the cooling airflow duct 11 is connected to the accommodating space, and the exhaust duct 23 is connected to the external space. C0 is the odor level. The set values ​​are: C1 is the first odor setting value, C2 is the second odor setting value, and 0 < V1 < V2 < V3; or, when the food container is in the food handling position, the speed of the exhaust fan 231 in the exhaust channel 23 is adjusted according to the duration ts of the food container being in the food handling position. Specifically, when ts ≤ t1, the speed of the exhaust fan 231 is controlled to the fourth speed V4, and the cooling airflow duct 11 is controlled to be connected to the accommodating space, and the exhaust channel 23 is controlled to be connected to the external... The space is connected; when t1 < ts ≤ t2, the speed of the exhaust fan 231 is controlled to the fifth speed V5, and the cooling airflow duct 11 is connected to the accommodating space and the exhaust channel 23 is connected to the external space; when ts > t2, the speed of the exhaust fan 231 is controlled to the sixth speed V6, and the cooling airflow duct 11 is connected to the accommodating space and the exhaust channel 23 is connected to the external space, where t1 is the first opening duration, t2 is the second opening duration, and 0 < V4 < V5 < V6.

[0037] In this technical solution, when the food container is in the food preservation position, that is, when the aforementioned sealed preservation chamber 2 is in a sealed state, odor removal can be performed based on the real-time odor concentration within the storage space. When the odor is low, the exhaust fan 231 does not operate, and at this time, both the exhaust duct 23 and the cooling channel 212 are in a cut-off state, and the sealed preservation chamber 2 is in a sealed state. Radiative cooling preservation of the food within the storage space is achieved by relying on the aforementioned cold-conducting plate 211. When the odor concentration is high, the exhaust fan 231 is controlled to operate to promptly expel the odorous airflow from the storage space, preventing... To prevent excessively high odor concentration from spreading to other rooms, the exhaust fan 231 rotates at higher speeds to ensure a timely decrease in odor concentration. When the food container is in the food handling position, the exhaust fan 231 is controlled to expel the odor airflow from the container space in a timely manner. This prevents excessively high odor concentration from spreading to other rooms through the opening of the food container when it is open. The exhaust fan 231 rotates at higher speeds to ensure that the airflow from the external environment can be discharged through the container space and the exhaust duct 23.

[0038] In the aforementioned control method, it is understood that when the exhaust fan 231 is running, that is, when the speed is not 0, the exhaust channel 23 and the aforementioned cooling channel 212 should be kept in a connected state. If the exhaust fan 231 is not running, that is, when the speed is 0, the exhaust channel 23 and the aforementioned cooling channel 212 should be kept in a disconnected state.

[0039] In some embodiments, when the accommodating space is equipped with an ultraviolet lamp 4, when C1 < Cs ≤ C2, the voltage of the ultraviolet lamp 4 is controlled to be a first voltage U1; or, when Cs > C2, the voltage of the ultraviolet lamp 4 is controlled to be a second voltage U2, U1 < U2, so as to further improve the efficiency and effect of odor removal.

[0040] In some embodiments, the odor removal and control method further includes the following steps: Obtain user commands. When the user instruction is to place food, the type of food to be placed is obtained, and the real-time odor concentration Cs in the accommodating space is detected; When Cs≤C3, the user is prompted to place the food in the food container; When Cs > C3, determine whether the type of food to be placed is consistent with the type of food taken out from the current food container. If they are consistent, prompt the user to place the food into the food container. When the food categories are inconsistent and C3 < Cs ≤ C4, the user is prompted to place the food in the food container after a first preset time ty1 (e.g., 5 minutes), and the exhaust fan 231 is controlled to run at the seventh speed V7, while the ultraviolet lamp 4 is controlled to run at the third voltage U3. When the food categories are inconsistent and Cs > C4, the user is prompted to place the food in the food container after the second preset time ty2. The steam generator 3 is then controlled to run for the third preset time ty3 (e.g., 10 minutes) and then turned off. After that, the exhaust fan 231 is controlled to run at the eighth speed V8 to expel the odor airflow in time and dry the food container and the storage space. At the same time, the ultraviolet lamp 4 is controlled to run at the fourth voltage U4, where V7 < V8.

[0041] In this technical solution, when a user intends to place new food into the sealed fresh-keeping compartment 2, the system compares the type of food placed this time with the previously placed food. If they are the same type, there is no risk of cross-contamination of odors, so the user is prompted to place the food directly for storage. If they are different types, the system removes odors based on the real-time odor concentration in the storage space. If the odor concentration is too high, steam is used to soften and remove the odor, preventing cross-contamination of odors within the storage space and improving the storage and fresh-keeping experience. It should be noted that when placing different types of food into a food container, the user should first remove the original food from the sealed fresh-keeping compartment 2, empty the container, switch it to the food fresh-keeping position, and then use the display interface on the refrigerator body 1 (e.g., ...) to... Figure 7 Select the corresponding food type on the screen (as shown). The refrigerator's control system can then execute the aforementioned control method after receiving the user's command.

[0042] The values ​​of V1 and V4, V2 and V5, and V3 and V6 mentioned above can be equal or unequal; the appropriate choice is sufficient. The values ​​of V7, V8, U1, U2, U3, U4, t1, t2, C1, C2, C3, and C4 should be selected appropriately according to actual needs.

[0043] In a specific embodiment, 500r / min≤V1≤1000r / min, 1500r / min≤V2≤2500r / min, 3000r / min≤V3≤5000r / min, V4=V1, V5=V2, V6=V3, 5V≤U1<U2≤24V, and 10ppb≤C1≤C2≤100ppb.

[0044] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A refrigerator, characterized in that, The refrigerator includes a main body (1), which has a refrigeration space. The refrigeration space has at least two food storage compartments, one of which is a sealed fresh-keeping compartment (2). The sealed fresh-keeping compartment (2) includes a compartment shell (21) with a accommodating space and a food container. The accommodating space has an inlet and outlet (22). The food container has a food preservation position and a food retrieval position. The food container can be pulled out through the inlet and outlet (22) to switch between the food preservation position and the food retrieval position. When the food container is in the food preservation position... When the refrigerator is in the fresh position, the inlet and outlet (22) can be sealed by the food container. A cooling airflow duct (11) is formed inside the refrigerator body (1). The cooling airflow duct (11) is controllably connected to the accommodating space. The accommodating space has a controllable exhaust channel (23). The exhaust channel (23) is connected to the external space of the refrigerator body (1). An exhaust fan (231) is provided inside the exhaust channel (23). When the exhaust fan (231) is running, it can exhaust the odor gas in the accommodating space to the external space and form a negative pressure in the accommodating space.

2. The refrigerator according to claim 1, characterized in that, The exhaust duct (23) is formed on the outer shell (21) of the compartment.

3. The refrigerator according to claim 1, characterized in that, The exhaust outlet of the exhaust duct (23) has an exhaust damper (233) that can control the opening and closing of the exhaust outlet.

4. The refrigerator according to claim 1, characterized in that, The exhaust duct (23) is also equipped with an odor adsorption component (232).

5. The refrigerator according to claim 4, characterized in that, The odor adsorbent (232) is a porous material coated with active copper ions.

6. The refrigerator according to claim 1, characterized in that, The outer shell (21) of the compartment is provided with a cooling plate (211), which can exchange heat with the cooling airflow in the cooling airflow duct (11) to achieve radiative cooling in the accommodating space.

7. The refrigerator according to claim 6, characterized in that, A cooling channel (212) is formed between the compartment shell (21) and the cooling guide plate (211) in communication with the cooling airflow duct (11). The cooling airflow duct (11) is located at the back of the refrigerator body (1). The cooling channel (212) extends from the back of the refrigerator body (1) to the front and forms an air inlet (2121) in the compartment shell (21) near the front of the refrigerator body (1) that communicates with the accommodating space. The air inlet (2121) is provided with an air inlet damper (2122) that can control its opening and closing. The exhaust channel (23) is located at the back of the compartment shell (21) near the back of the refrigerator body (1).

8. The refrigerator according to claim 1, characterized in that, The outer shell (21) of the compartment is also provided with a steam generating device (3), and the steam nozzle (31) of the steam generating device (3) is located in the accommodating space.

9. The refrigerator according to claim 1, characterized in that, The food container and the inner wall of the chamber shell (21) are coated with photocatalytic material, and the accommodating space is also equipped with an ultraviolet lamp (4).

10. The refrigerator according to claim 1, characterized in that, The accommodating space is also equipped with a VOC sensor (5).

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