Refrigerator and odor purification method thereof

Abstract

The refrigerator comprises a refrigerator body, a door body is arranged at an opening of the refrigerator body, and at least one storage chamber is arranged in the refrigerator body and used for storing articles; the air duct is arranged in the storage chamber, and an air return port and an air outlet of the air duct are formed in the storage chamber; the fan is used for controlling the air velocity between the air return port and the air outlet of the air duct; the odor sensor is used for detecting the odor concentration of the odor gas in the air duct; the deodorization module is used for deodorizing gas flowing through the air duct; the controller is configured to detect the odor concentration in the air duct; and controlling the fan to work according to the odor concentration. The odor concentration in the refrigerator can be actively detected, active deodorization is carried out, and the deodorization effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerators, and in particular to a refrigerator and a method for purifying odor of the refrigerator. Background Art

[0002] It is inevitable that household refrigerators will have odor problems during use, which seriously affects the user experience. At present, the most common refrigerator deodorization method is passive deodorization, which achieves the purpose of deodorization by absorbing the odor in the refrigerator through the deodorization module. Most of the existing deodorization modules are installed on the door body, with poor air circulation, limited deodorization effect, and inconvenient replacement. As the use time increases, the deodorization effect gradually decreases. There are also some deodorization devices that only optimize the structure of the deodorization module, making the deodorization module easy to install and replace, but it is still passive deodorization, and the deodorization effect is not obvious. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a refrigerator and a method for purifying the odor of the refrigerator, which can actively detect the odor concentration in the refrigerator and perform active deodorization, and the deodorization effect is better.

[0004] An embodiment of the present invention provides a refrigerator, comprising:

[0005] A box body, wherein a door body is provided at the opening of the box body, and at least one storage room is provided in the box body for storing items;

[0006] A refrigeration system, the refrigeration system comprising a pipeline loop consisting of a compressor, a condenser, a capillary tube and an evaporator connected by pipelines;

[0007] An air duct, the air duct is arranged in the storage room, and the return air inlet and the air outlet of the air duct are both arranged in the storage room;

[0008] A fan, the fan is used to control the air flow rate between the return air outlet and the air outlet of the air duct;

[0009] An odor sensor, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct;

[0010] a deodorizing module, the deodorizing module being used to deodorize the gas flowing through the air duct;

[0011] A controller, the controller being configured to:

[0012] detecting the odor concentration in the air duct;

[0013] The operation of the fan is controlled according to the odor concentration.

[0014] Preferably, the controller is further configured to:

[0015] When the odor concentration is lower than a first preset value, turning off the fan;

[0016] When the odor concentration is not lower than the first preset value, the fan is controlled to run at a preset speed.

[0017] Preferably, the refrigerator further comprises:

[0018] A display module, the display module is used to receive and display the alarm information fed back by the controller;

[0019] The controller is also configured to:

[0020] When the odor concentration is not lower than a preset value, an alarm message containing the odor concentration is generated and sent to the display module.

[0021] Preferably, the air outlet of the air duct includes:

[0022] A conventional air outlet, wherein an electric damper is arranged in the air guide slot of the conventional air outlet;

[0023] A deodorizing air outlet, wherein the deodorizing module is arranged in an air guide groove of the deodorizing air outlet;

[0024] The controller is also configured to:

[0025] The electric damper is controlled to be opened or closed according to the detected odor concentration.

[0026] Furthermore, the controller is also configured to:

[0027] When the odor concentration is lower than a first preset value, the electric damper is controlled to open, and the fan is controlled to run at a preset first speed;

[0028] When the odor concentration is not lower than the first preset value, controlling the electric damper to close, and controlling the fan to run at a preset second speed;

[0029] Wherein, the second speed is not lower than the first speed.

[0030] As a preferred solution, the refrigerator further comprises:

[0031] A main electric damper, the main electric damper is arranged between the air outlet and the return air outlet of the air duct;

[0032] The controller is also configured to:

[0033] When the odor concentration is lower than a second preset value, controlling the main electric damper to close;

[0034] When the odor concentration is not lower than the second preset value, the main electric damper is controlled to open.

[0035] Preferably, the deodorization module is an adsorption deodorization module;

[0036] The adsorption deodorization module is installed inside the air duct through a detachable device.

[0037] As a preferred solution, the number of the conventional air outlets is two; the number of the deodorizing air outlets is two;

[0038] The number of the return air vents is two;

[0039] The two conventional air outlets are respectively installed at two symmetrical positions around the center of the storage room;

[0040] The two deodorizing air outlets are respectively installed at two symmetrical positions in the center of the storage room;

[0041] The two return air outlets are respectively installed at two symmetrical positions around the center of the storage room.

[0042] Preferably, the air guide groove of the air duct is composed of a groove on the thermal insulation foam board;

[0043] An evaporator is also arranged in the air duct.

[0044] The embodiment of the present invention further provides a method for purifying odor of a refrigerator, the refrigerator comprising:

[0045] A box body, wherein a door body is provided at the opening of the box body, and at least one storage room is provided in the box body for storing items;

[0046] A refrigeration system, the refrigeration system comprising a pipeline loop consisting of a compressor, a condenser, a capillary tube and an evaporator connected by pipelines;

[0047] An air duct, the air duct is arranged in the storage room, and the return air inlet and the air outlet of the air duct are both arranged in the storage room;

[0048] A fan, the fan is used to control the air flow rate between the return air outlet and the air outlet of the air duct;

[0049] An odor sensor, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct;

[0050] A deodorizing module, the deodorizing module is used to deodorize the gas flowing through the air duct;

[0051] Controller;

[0052] The method comprises:

[0053] detecting the odor concentration in the air duct;

[0054] The operation of the fan is controlled according to the odor concentration.

[0055] Compared with the prior art, the refrigerator and the odor purification method of the refrigerator disclosed in the present invention include: a box body, a door body is provided at the opening of the box body, and at least one storage room is provided in the box body for storing articles; a refrigeration system, the refrigeration system is composed of a pipeline circulation composed of a compressor, a condenser, a capillary tube and an evaporator connected by a pipeline; an air duct, the air duct is arranged in the storage room, and the return air port and the air outlet of the air duct are both arranged in the storage room; a fan, the fan is used to control the air flow rate between the return air port and the air outlet of the air duct; an odor sensor, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct; a deodorization module, the deodorization module is used to deodorize the gas flowing through the air duct; a controller, the controller is configured to: detect the odor concentration in the air duct; and control the operation of the fan according to the odor concentration. The present application can actively detect the odor concentration in the refrigerator and perform active deodorization, and the deodorization effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention;

[0057] Figure 2 is a schematic structural diagram of a refrigeration system of a refrigerator provided in an embodiment of the present invention;

[0058] Figure 3 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0059] Figure 4 is a schematic structural diagram of the air duct provided by the present invention in the first embodiment;

[0060] Figure 5 is a flow chart of a control process of a controller provided by an embodiment of the present invention;

[0061] Figure 6 is a schematic structural diagram of the air duct provided by the present invention in a second embodiment;

[0062] Figure 7 is a flow chart of a control process of a controller provided by another embodiment of the present invention;

[0063] Figure 8 is a schematic structural diagram of the air duct provided by the present invention in a third embodiment;

[0064] Fig. 9 is a flow chart of a control process of a controller provided by another embodiment of the present invention;

[0065] Fig.10It is a schematic structural diagram of the air duct provided by the present invention in the fourth embodiment. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0068] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0069] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] See also Figure 1 , is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention. The embodiment of the present invention provides a refrigerator, including a box body 101, in which a storage chamber 102 is provided, including a refrigerating chamber and / or a freezing chamber 103 for storing items with preservation or freezing requirements, and also includes a refrigeration system 104 for performing the refrigeration operation of the refrigerator.

[0071] It should be noted that the refrigerator performs refrigeration operation through the refrigeration system to provide cold energy to the storage chamber so as to maintain the storage chamber at a constant low temperature. Figure 2, is a structural schematic diagram of a refrigeration system of a refrigerator provided in an embodiment of the present invention, wherein the refrigeration system is composed of a compressor 201, a condenser 202, a drying filter 203, a capillary tube 204 and an evaporator 205, and the working structure of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process.

[0072] The compression process is as follows: plug in the power cord of the refrigerator, and when the box has a cooling demand, the compressor starts working, and the low-temperature, low-pressure refrigerant is sucked into the compressor, compressed into a high-temperature, high-pressure superheated gas in the compressor cylinder, and then discharged into the condenser; the condensation process is as follows: the high-temperature, high-pressure refrigerant gas dissipates heat through the condenser, the temperature continues to drop, and is gradually cooled to a saturated vapor at room temperature and high pressure, and further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature. The pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows: the condensed refrigerant saturated liquid flows into the capillary after the moisture and impurities are filtered out by the drying filter, and the refrigerant is throttled and depressurized through it, and the refrigerant becomes a wet vapor at room temperature and low pressure; the evaporation process is as follows: it then begins to absorb heat and vaporize in the evaporator, which not only reduces the temperature of the evaporator and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator returns to the compressor again, repeating the above process, transferring the heat in the refrigerator to the air outside the box, and achieving the purpose of refrigeration.

[0073] It should be noted that the above embodiment is only a specific structure and working principle of a conventional refrigerator. The refrigerator disclosed in this embodiment may also have the structure of the above-mentioned existing refrigerator to achieve corresponding functions.

[0074] A refrigerator provided by an embodiment of the present invention includes:

[0075] Specifically, see Figure 3 , is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention, the refrigerator comprising: a box body 101, a refrigeration system 104, an air duct 301, a fan 302, an odor sensor 303, a deodorization module 304 and a controller 305.

[0076] A door is provided at the opening of the box body 101, and at least one storage room 102 is provided in the box body for storing items;

[0077] A refrigeration system 104, the refrigeration system comprising a pipeline loop consisting of a compressor, a condenser, a capillary tube and an evaporator connected by pipelines;

[0078] An air duct 301 is arranged in the storage room, and an air return port and an air outlet of the air duct are both arranged in the storage room;

[0079] A fan 302, the fan is used to control the air flow rate between the return air outlet and the air outlet of the air duct;

[0080] An odor sensor 303, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct;

[0081] A deodorizing module 304, which is used to deodorize the gas flowing through the air duct;

[0082] A controller 305, wherein the controller is configured to:

[0083] detecting the odor concentration in the air duct;

[0084] The operation of the fan is controlled according to the odor concentration.

[0085] It should be noted that the storage compartments in a refrigerator generally include a refrigerator compartment, a freezer compartment, and a variable temperature compartment. Different temperatures are set to preserve different foods. However, the temperature in the freezer compartment is generally set below minus 10 degrees Celsius, and the stored food is generally frozen and does not produce odor. In the refrigerator compartment, due to the higher temperature, the stored food is prone to odor and needs to be deodorized. Therefore, the deodorization function is generally configured in the refrigerator compartment.

[0086] Refrigeration system 104, the refrigeration system includes a compressor 201, a condenser 202, a capillary tube 204 and an evaporator 205. The refrigeration system is composed of a pipeline loop composed of a compressor, a condenser, a capillary tube and an evaporator connected by a pipeline. The refrigerant in the pipeline flows in the compressor, the condenser, the capillary tube and the evaporator in turn. The generated cold energy is transmitted to the storage room through the evaporator to cool the storage room.

[0087] The air duct 301 is arranged in the storage room 102. The return air port and the air outlet of the air duct are arranged in the storage room. By allowing the air in the storage room to flow through the air outlet and the return air port in the air duct, deodorization is performed through the air duct.

[0088] See also Figure 4 , is a schematic diagram of the structure of the air duct provided by the present invention in the first embodiment. A fan 302, an odor sensor 303, and a deodorization module 304 are arranged in the air duct.

[0089] The fan 302 is installed in the air duct, and the air flow rate between the return air port and the air outlet of the air duct is controlled by controlling the fan speed.

[0090] The odor sensor 303 is arranged inside the air duct and is used to detect the odor concentration of the odorous gas in the air duct. The odor sensor can detect the concentration of odorous gases such as ammonia / amines and thiols in the air, and send the concentration value of the odorous gas to the controller as the odor concentration.

[0091] The deodorization module 304 deodorizes the gas flowing through the deodorization module in the air duct.

[0092] It should be noted that the Figure 4 The fan 302, odor sensor 303 and deodorization module 304 in the air duct are arranged in sequence between the return air port 401 and the air outlet 402. The air outlet direction of the fan is arranged at the air outlet of the air duct. Due to the exhaust effect of the fan, the air in the air duct flows through the fan 302, odor sensor 303 and deodorization module 304 in sequence. The odor gas concentration in the air duct is detected by the odor sensor, and the air is deodorized by the deodorization module. In other embodiments, the fan 302, odor sensor 303 and deodorization module 304 can be arranged in other sequences, which will not be repeated here.

[0093] The controller 305 is electrically connected to the fan 302 and the odor sensor 303 respectively.

[0094] The controller detects the odor concentration in the air in the air duct through the odor sensor;

[0095] The fan operation is controlled according to the odor concentration.

[0096] It should be noted that the control of the fan can be specifically as follows: when the odor concentration is low, the fan is turned off; when the odor concentration exceeds a preset value, the fan is controlled to run at a preset speed.

[0097] As another way, the controller may control the fan according to the odor concentration by matching the corresponding rotation speed in a preset matching database according to the odor concentration, and controlling the fan to operate according to the matched rotation speed.

[0098] The odor concentration in the refrigerator storage room is detected by the odor sensor, and the fan speed is controlled according to the odor concentration. The wind speed of the air in the storage room circulating in the air duct is then controlled to control the deodorization efficiency of the deodorization module, thereby achieving active deodorization with higher deodorization efficiency.

[0099] In another embodiment provided by the present invention, the controller is further configured to:

[0100] When the odor concentration is lower than a first preset value, turning off the fan;

[0101] When the odor concentration is not lower than the first preset value, the fan is controlled to run at a preset speed.

[0102] When this embodiment is implemented, see Figure 5 , is a flow chart of the control process of the controller provided in an embodiment of the present invention. When performing odor purification control, the controller performs the following steps:

[0103] Step S501, detecting the odor concentration in the air duct;

[0104] Step S502, determining whether the odor concentration is lower than a first preset value;

[0105] If yes, execute step S503;

[0106] If not, execute step S504;

[0107] Step S503, turn off the fan; that is, when the odor concentration in the air duct is lower than the first preset value, that is, the odor concentration in the air duct is low at this time, and the air in the refrigerator is relatively fresh, turn off the fan, and the air in the storage room flows normally in the air duct, and the air slowly flows through the deodorization module, and the deodorization module passively absorbs the odor factors in the gas in the storage room, slowly deodorizes, and reduces the noise during the operation of the fan and the consumption rate of the deodorization module.

[0108] Step S504, control the fan to run at a preset speed. That is, when the odor concentration in the air duct is not lower than the first preset value, that is, at this time, the odor concentration in the air duct is high, the concentration of odorous gases such as ammonia / amines and mercaptans in the air in the refrigerator is high, and there is odor in the refrigerator, turn on the fan, control the fan to run at the first preset value, accelerate the air flow rate in the air duct, quickly absorb the odor factors in the gas in the storage room through the deodorization module, and quickly purify the air in the refrigerator.

[0109] It should be noted that when the odor concentration is not lower than the first preset value, the corresponding rotation speed can be matched in the preset matching database according to the odor concentration, and the fan operation can be controlled according to the matched rotation speed to achieve accurate matching of deodorization rate and odor concentration and fine purification control.

[0110] By detecting the odor concentration, when the air in the refrigerator is relatively fresh, the fan does not work, and the deodorization module slowly deodorizes the air that normally flows in the refrigerator, avoiding the power consumption caused by the long-term operation of the fan, and preventing the deodorization module from being consumed too quickly. On the premise of keeping the air in the refrigerator fresh, the use time of the deodorization module is extended.

[0111] In another embodiment provided by the present invention, the refrigerator further comprises:

[0112] A display module, the display module is used to receive and display the alarm information fed back by the controller;

[0113] The controller is also configured to:

[0114] When the odor concentration is not lower than a preset value, an alarm message containing the odor concentration is generated and sent to the display module.

[0115] In a specific embodiment of this invention, the refrigerator further includes a display module.

[0116] The controller is electrically connected to the display module.

[0117] The display module is configured on the outside of the refrigerator shell, and the display panel is responsible for information exchange with the controller and displays the concentration of the odorous gas in real time. When the concentration of the odorous gas exceeds the standard, the display panel will automatically light up, and by displaying the alarm code and the number of alarms, it will receive and display the alarm information fed back by the controller to remind the user.

[0118] See also Figure 5 In step S502, when the controller determines that the odor concentration is not lower than the first preset value, the controller is further configured to perform the following steps:

[0119] Step S505, generating and sending an alarm message including the odor concentration to a display module.

[0120] The display module displays the concentration of odorous gases in real time, and after receiving the alarm information, reminds the user that the odor exceeds the standard, and reminds the user to actively deal with the smelly items in the refrigerator.

[0121] It not only actively purifies and removes odors and curbs the spread of odors, but also actively reminds users through the display module to clean the source of odors to achieve better deodorization and purification effects.

[0122] In another embodiment provided by the present invention, the air outlet of the air duct comprises:

[0123] A conventional air outlet, wherein an electric damper is arranged in the air guide slot of the conventional air outlet;

[0124] A deodorizing air outlet, wherein the deodorizing module is arranged in an air guide groove of the deodorizing air outlet;

[0125] The controller is also configured to:

[0126] The electric damper is controlled to be opened or closed according to the detected odor concentration.

[0127] When this embodiment is implemented, see Figure 6 , is a schematic structural diagram of the air duct provided by the present invention in a second embodiment;

[0128] The air outlet of the air duct includes a conventional air outlet 601 and a deodorizing air outlet 602;

[0129] A separate first air guide groove 604 is formed at the conventional air outlet 601 , and a separate second air guide groove 605 is formed at the deodorizing air outlet 602 .

[0130] An electric damper 603 is disposed in the first air guide slot 604 of the conventional air outlet 601 . The electric damper 603 controls the opening or closing of the first air guide slot 604 under the control of a controller.

[0131] The second air guide groove 605 of the deodorizing air outlet 602 is provided with a deodorizing module 304, and the deodorizing module 304 only deodorizes the air passing through the second air guide groove.

[0132] It should be noted that the Figure 4 The fan 302, odor sensor 303 and deodorization module 304 in the air duct are arranged in sequence between the return air port 401 and the air outlet 402. The air outlet direction of the fan is arranged at the air outlet of the air duct. Due to the exhaust effect of the fan, the air in the air duct flows through the fan 302, odor sensor 303 and deodorization module 304 in sequence. The odor gas concentration in the air duct is detected by the odor sensor, and the air is deodorized by the deodorization module. In other embodiments, the fan 302, odor sensor 303 and deodorization module 304 can be arranged in other sequences, which will not be repeated here.

[0133] The controller controls the opening or closing of the electric damper according to the detected odor concentration, and can control whether the air in the air duct passes through the conventional air outlet.

[0134] When the electric damper is opened, the air is discharged from the air duct through the conventional air outlet and the deodorization air outlet. At this time, the deodorization module only deodorizes the air in the second air guide groove. The air flowing through the second air guide groove is reduced, the deodorization efficiency is reduced, and the consumption of the deodorization module can also be slowed down.

[0135] When the electric damper is closed, the air can only be discharged from the air duct through the deodorization outlet, and the air in the air duct needs to be discharged from the second air guide slot, the wind speed increases, and the deodorization efficiency improves.

[0136] By setting the conventional air outlet and the deodorizing air outlet, the deodorizing efficiency can be precisely controlled.

[0137] In another embodiment provided by the present invention, the controller is further configured to:

[0138] When the odor concentration is lower than a first preset value, the electric damper is controlled to open, and the fan is controlled to run at a preset first speed;

[0139] When the odor concentration is not lower than the first preset value, controlling the electric damper to close, and controlling the fan to run at a preset second speed;

[0140] Wherein, the second speed is not lower than the first speed.

[0141] When this embodiment is implemented, see Figure 7 , is a flow chart of a control process of a controller provided by another embodiment of the present invention. When performing odor purification control, the controller performs the following steps:

[0142] Step S701, detecting the odor concentration in the air duct;

[0143] Step S702, determining whether the odor concentration is lower than a first preset value;

[0144] If yes, execute step S703;

[0145] If not, execute step S704;

[0146] Step S703, control the electric damper to open, and control the fan to run at a preset first speed; that is, when the odor concentration in the air duct is lower than the first preset value, that is, the odor concentration in the air duct is low at this time, and the air in the refrigerator is relatively fresh, open the electric damper, and run the fan at a lower first speed. The air in the storage room is accelerated by the fan and is discharged through the conventional air outlet and the deodorization air outlet. The amount of air flowing through the deodorization module is reduced, and the deodorization module adsorbs the odor factors in the gas in the storage room, slowly deodorizes, and slows down the consumption rate of the deodorization module.

[0147] Step S704, control the electric damper to close, and control the fan to run at a preset second speed. That is, when the odor concentration in the air duct is not lower than the first preset value, that is, at this time, the odor concentration in the air duct is high, the concentration of odorous gases such as ammonia / amines and mercaptans in the air in the refrigerator is high, and there is odor in the refrigerator, turn on the fan, control the fan to run at a faster second preset value, accelerate the air flow rate in the air duct, close the electric damper, and the air can only be discharged from the deodorization outlet. The deodorization module quickly absorbs the odor factors in the gas in the storage room, accelerates the deodorization efficiency of the deodorization module, and quickly purifies the air in the refrigerator.

[0148] It should be noted that when the first speed is not lower than the second speed, that is, when the odor concentration is low, the fan runs at a lower wind speed. When the odor concentration is high, the wind speed is increased to improve the deodorization efficiency.

[0149] By detecting the odor concentration, when the air in the refrigerator is relatively fresh, the deodorizing module deodorizes the air normally flowing in the second air guide slot through the conventional air outlet diversion, so as to avoid the deodorizing module being consumed too quickly and extend the use time of the deodorizing module while keeping the air in the refrigerator fresh.

[0150] In another embodiment provided by the present invention, the refrigerator further comprises:

[0151] A main electric damper, the main electric damper is arranged between the air outlet and the return air outlet of the air duct;

[0152] The controller is also configured to:

[0153] When the odor concentration is lower than a second preset value, controlling the main electric damper to close;

[0154] When the odor concentration is not lower than the second preset value, the main electric damper is controlled to open.

[0155] When this embodiment is implemented, see Figure 8 , is a schematic diagram of the structure of the air duct provided by the present invention in the third embodiment. A main electric damper 801 is also arranged in the air duct; the main electric damper is arranged between the air outlet and the return air outlet of the air duct to control the air circulation in the air duct.

[0156] See also Fig. 9 , is a flow chart of a control process of a controller provided by another embodiment of the present invention. When performing odor purification control, the controller performs the following steps:

[0157] Step S901, detecting the odor concentration in the air duct;

[0158] Step S902, determining whether the odor concentration is lower than a second preset value;

[0159] If yes, execute step S903;

[0160] If not, execute step S904;

[0161] Step S503, controlling the main electric damper to close; that is, when the odor concentration in the air duct is lower than the second preset value, that is, the odor concentration in the air duct is low at this time, and the air in the refrigerator is relatively fresh, the main electric damper is closed to stop the air in the storage room from flowing in the air duct, and only a small amount of air flows through the deodorization module, thereby slowing down the consumption rate of the deodorization module.

[0162] Step S904, control the main electric damper to open. That is, when the odor concentration in the air duct is not lower than the second preset value, that is, at this time, the odor concentration in the air duct is high, the concentration of odorous gases such as ammonia / amines and mercaptans in the air in the refrigerator is high, and there is odor in the refrigerator, the fan is turned on, the main electric damper is turned on, the air flow rate in the air duct is accelerated, and the deodorization module quickly absorbs the odor factors in the gas in the storage room, and quickly purifies the air in the refrigerator.

[0163] In another embodiment provided by the present invention, the deodorization module is an adsorption deodorization module;

[0164] The adsorption deodorization module is installed inside the air duct through a detachable device.

[0165] In the specific implementation of this embodiment, the deodorization module is an adsorption deodorization module, the main component of which is a composite material prepared from fatty acid zinc and inorganic salts. The composite material adsorbs odor factors in the air to purify the air.

[0166] The adsorption deodorization module is installed in the air duct through a detachable device and is installed in a position in the air duct that is convenient for disassembly. When the adsorption deodorization module is consumed, the deodorization module can be detached and replaced to improve the deodorization effect.

[0167] In another embodiment provided by the present invention, the number of the conventional air outlets is two; the number of the deodorizing air outlets is two;

[0168] The number of the return air vents is two;

[0169] The two conventional air outlets are respectively installed at two symmetrical positions around the center of the storage room;

[0170] The two deodorizing air outlets are respectively installed at two symmetrical positions in the center of the storage room;

[0171] The two return air outlets are respectively installed at two symmetrical positions around the center of the storage room.

[0172] When this embodiment is implemented, Fig.10 , is a schematic structural diagram of the air duct provided by the present invention in a fourth embodiment;

[0173] The number of the deodorizing air outlets is two, namely the first deodorizing air outlet 1001 and the second deodorizing air outlet 1002; the number of the conventional air outlets is two, namely the first conventional air outlet 1003 and the second conventional air outlet 1004;

[0174] There are two return air vents, namely a first return air vent 1005 and a second return air vent 1006;

[0175] A first deodorizing module 1007 is disposed in the air guide groove of the first deodorizing air outlet 1001 , and a second deodorizing module 1008 is disposed in the air guide groove of the second deodorizing air outlet 1002 .

[0176] The first conventional air outlet 1003 is provided with a first electric damper 1009 , and the second conventional air outlet 1004 is provided with a second electric damper 1010 .

[0177] The first return air outlet and the second return air outlet are converged through the fan air guide groove 1011 at the fan 302, and the fan air guide groove 1011 is divided into four independent air guide grooves, which are respectively connected to the first deodorizing air outlet 1001, the second deodorizing air outlet 1002, the first conventional air outlet 1003 and the second conventional air outlet 1004.

[0178] The two conventional air outlets are respectively installed at two symmetrical positions around the center of the storage room. Fig.10 In the figure, the first conventional air outlet 1003 and the second conventional air outlet 1004 are installed at symmetrical positions on the left and right sides.

[0179] The two deodorizing air outlets are respectively installed at two symmetrical positions in the center of the storage room. Fig.10 In the figure, the first deodorizing air outlet 1001 and the second deodorizing air outlet 1002 are installed on the left and right sides.

[0180] The two return air vents are respectively installed at two symmetrical positions around the center of the storage room. Fig.10 In the figure, the first return air outlet 1005 and the second return air outlet 1006 are installed on the left and right sides.

[0181] By setting up multiple symmetrical air vents, uniform circulation of air in the storage room can be achieved.

[0182] In another embodiment provided by the present invention, the air guide groove of the air duct is composed of a groove on the thermal insulation foam board;

[0183] An evaporator is also arranged in the air duct.

[0184] When this embodiment is implemented, see Fig.10 The air guide groove of the air duct is composed of grooves on the insulation foam board 1012; an evaporator is also arranged in the air duct.

[0185] The air in the refrigerator enters the air duct from the return air port, and the air is cooled by refrigeration devices such as the evaporator and DC fan in turn. The cooled air is discharged from the air duct through the air outlet, and the temperature can be lowered while deodorizing to ensure the deodorizing effect.

[0186] Another embodiment of the present invention provides a method for purifying odor of a refrigerator, the refrigerator comprising:

[0187] A box body, wherein a door body is provided at the opening of the box body, and at least one storage room is provided in the box body for storing items;

[0188] A refrigeration system, the refrigeration system comprising a pipeline loop consisting of a compressor, a condenser, a capillary tube and an evaporator connected by pipelines;

[0189] An air duct, the air duct is arranged in the storage room, and the return air inlet and the air outlet of the air duct are both arranged in the storage room;

[0190] A fan, the fan is used to control the air flow rate between the return air outlet and the air outlet of the air duct;

[0191] An odor sensor, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct;

[0192] A deodorizing module, the deodorizing module is used to deodorize the gas flowing through the air duct;

[0193] Controller;

[0194] The method comprises:

[0195] detecting the odor concentration in the air duct;

[0196] The operation of the fan is controlled according to the odor concentration.

[0197] It should be noted that the refrigerator dehumidification control method provided in the embodiment of the present invention is the same as all the process steps executed by the refrigerator controller in the above embodiment, see Figure 5 The working principles and beneficial effects of the two correspond one to one. For the specific workflow diagram, see Figure 7 and Fig. 9 , so I will not go into details.

[0198] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0199] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein a door body is provided at the opening of the box body, and at least one storage room is provided in the box body for storing items; A refrigeration system, the refrigeration system comprising a pipeline loop consisting of a compressor, a condenser, a capillary tube and an evaporator connected by pipelines; An air duct, the air duct is arranged in the storage room, and the return air inlet and the air outlet of the air duct are both arranged in the storage room; A fan, the fan is used to control the air flow rate between the return air outlet and the air outlet of the air duct; An odor sensor, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct; A deodorizing module, the deodorizing module is used to deodorize the gas flowing through the air duct; A controller, the controller being configured to: detecting the odor concentration in the air duct; The operation of the fan is controlled according to the odor concentration.

2. The refrigerator according to claim 1, characterized in that: The controller is also configured to: When the odor concentration is lower than a first preset value, turning off the fan; When the odor concentration is not lower than the first preset value, the fan is controlled to run at a preset speed.

3. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: A display module, the display module is used to receive and display the alarm information fed back by the controller; The controller is also configured to: When the odor concentration is not lower than a preset value, an alarm message containing the odor concentration is generated and sent to the display module.

4. The refrigerator according to claim 1, characterized in that: The air outlet of the air duct comprises: A conventional air outlet, wherein an electric damper is arranged in the air guide slot of the conventional air outlet; A deodorizing air outlet, wherein the deodorizing module is arranged in an air guide groove of the deodorizing air outlet; The controller is also configured to: The electric damper is controlled to be opened or closed according to the detected odor concentration.

5. The refrigerator according to claim 4, characterized in that: The controller is also configured to: When the odor concentration is lower than a first preset value, the electric damper is controlled to open, and the fan is controlled to run at a preset first speed; When the odor concentration is not lower than the first preset value, controlling the electric damper to close, and controlling the fan to run at a preset second speed; Wherein, the second speed is not lower than the first speed.

6. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: A main electric damper, the main electric damper is arranged between the air outlet and the return air outlet of the air duct; The controller is also configured to: When the odor concentration is lower than a second preset value, controlling the main electric damper to close; When the odor concentration is not lower than the second preset value, the main electric damper is controlled to open.

7. The refrigerator according to claim 1, characterized in that: The deodorization module is an adsorption deodorization module; The adsorption deodorization module is installed inside the air duct through a detachable device.

8. The refrigerator according to claim 4, characterized in that: The number of the conventional air outlets is two; the number of the deodorizing air outlets is two; The number of the return air vents is two; The two conventional air outlets are respectively installed at two symmetrical positions around the center of the storage room; The two deodorizing air outlets are respectively installed at two symmetrical positions in the center of the storage room; The two return air outlets are respectively installed at two symmetrical positions around the center of the storage room.

9. The refrigerator according to claim 1, characterized in that: The air guide groove of the air duct is composed of grooves on the thermal insulation foam board; An evaporator is also arranged in the air duct.

10. A method for purifying odor of a refrigerator, characterized in that: The refrigerator comprises: A box body, wherein a door body is provided at the opening of the box body, and at least one storage room is provided in the box body for storing items; A refrigeration system, the refrigeration system comprising a pipeline loop consisting of a compressor, a condenser, a capillary tube and an evaporator connected by pipelines; An air duct, the air duct is arranged in the storage room, and the return air inlet and the air outlet of the air duct are both arranged in the storage room; A fan, the fan is used to control the air flow rate between the return air outlet and the air outlet of the air duct; An odor sensor, the odor sensor is used to detect the odor concentration of the odorous gas in the air duct; A deodorizing module, the deodorizing module is used to deodorize the gas flowing through the air duct; Controller; The method comprises: detecting the odor concentration in the air duct; The operation of the fan is controlled according to the odor concentration.

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