A humidity control device and a refrigerator

Abstract

The embodiment of the present application provides a kind of humidity control device and refrigerator, humidity control device is connected with the drawer interchamber of refrigerator, including filter, fan, air duct component, ventilation cover, air duct component includes air inlet and air outlet, is connected with the drawer interchamber by air outlet, ventilation cover is set on the shell of refrigerator, and is connected with air inlet, for introducing ambient air;Fan is arranged in air duct component, for adjusting the air flow rate in air duct component;Filter is arranged in air duct component, for filtering ambient air.The embodiment of the present application can when the internal humidity of drawer interchamber is less than preset value range, start fan to intensify the air flow speed in air duct component, more quickly introduce ambient air into drawer interchamber, to increase the internal humidity of drawer interchamber, humidification is carried out by the way of introducing ambient air, can solve the problem that existing active humidity control needs to rely on water box and ultrasonic wave technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, in particular to a humidity control device and a refrigerator. BACKGROUND

[0002] With the continuous improvement of people's material living standards and the quality of life, consumers pay more and more attention to healthy life and have higher and higher requirements for the freshness of food. As an important product for food storage, consumers have higher and higher requirements for the freshness of refrigerators. Most of the current market refrigerators above the middle and high-end have fruit and vegetable preservation functions. The essence of the fruit and vegetable preservation function is to control the humidity in the refrigerator to reduce the water loss rate of fruits and vegetables, so that the user can store fruits and vegetables for a longer time and prolong the preservation period of the food.

[0003] The current mainstream active humidity control preservation function on the market mainly increases a water box in the compartment, and then uses ultrasonic technology to blow water mist into the compartment at regular intervals to make the humidity in the compartment stable at a preset value. Due to the water box and ultrasonic technology, the volume of the compartment is lost, and the ultrasonic technology produces a lot of noise during operation, affecting the user experience. SUMMARY

[0004] In view of the above problems, the present application is proposed to provide a humidity control device and a refrigerator which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above problems, the present application discloses a humidity control device applied to a refrigerator, wherein the humidity control device is connected with a drawer compartment of the refrigerator, and the humidity control device comprises a filter, a fan, an air duct assembly and an air vent cover.

[0006] The air duct assembly comprises an air inlet and an air outlet, and the air outlet is connected with the drawer compartment.

[0007] The air vent cover is arranged on a shell of the refrigerator and connected with the air inlet, and is used for introducing external air.

[0008] The fan is arranged in the air duct assembly and used for adjusting the air flow rate in the air duct assembly.

[0009] The filter is arranged in the air duct assembly and used for filtering the external air.

[0010] Optionally, the air duct assembly comprises a first air duct and a second air duct.

[0011] The first air duct is connected with the drawer compartment and the second air duct respectively, and the second air duct is connected with the air vent cover.

[0012] Optionally, the fan is arranged inside the first air duct.

[0013] Optionally, the air duct assembly is provided with a first water collecting tank for collecting condensate water formed by the air duct assembly.

[0014] The humidity control device further comprises a first electric heating element arranged in the first air duct, the first electric heating element being used for heating the condensate water in the first water collecting tank.

[0015] Optionally, the first water collecting tank is arranged at a port where the first air duct is connected to the second air duct, and the first electric heating element is arranged around the first air duct.

[0016] Optionally, the first air duct is provided with a drain hole for draining the condensate water exceeding the capacity of the first water collecting tank.

[0017] Optionally, a drain pipe corresponding to the drain hole is further arranged for draining the condensate water.

[0018] Optionally, the first air duct is arranged in a box body of the refrigerator, and the second air duct is arranged in a foaming layer between the box body of the refrigerator and the shell.

[0019] Correspondingly, the application discloses a refrigerator, which comprises a drawer chamber and the humidity control device.

[0020] The humidity control device is connected to the drawer chamber of the refrigerator, and comprises a filter, a fan, an air duct assembly and an air duct cover.

[0021] The air duct assembly comprises an air inlet and an air outlet, and the air outlet is connected to the drawer chamber.

[0022] The air duct cover is arranged on the shell of the refrigerator and connected to the air inlet, and is used for introducing external air.

[0023] The fan is arranged in the air duct assembly and used for adjusting the air flow rate in the air duct assembly.

[0024] The filter is arranged in the air duct assembly and used for filtering the external air.

[0025] Optionally, the air duct assembly comprises a first air duct and a second air duct.

[0026] The first air duct is connected to the drawer chamber and the second air duct respectively, and the second air duct is connected to the air duct cover.

[0027] Optionally, the fan is arranged inside the first air duct.

[0028] Optionally, the ventilation channel assembly is provided with a first water collecting tank for collecting condensate water formed by the ventilation channel assembly from the external air;

[0029] The humidity control device further comprises a first electric heating element arranged in the first ventilation channel, and the first electric heating element is used for heating the condensate water in the first water collecting tank.

[0030] Optionally, the first water collecting tank is arranged at a port where the first ventilation channel is connected to the second ventilation channel, and the first electric heating element is arranged around the first ventilation channel.

[0031] Optionally, the first ventilation channel is provided with a drain hole for discharging condensate water exceeding the capacity of the first water collecting tank.

[0032] Optionally, a drain pipe corresponding to the drain hole is further arranged for discharging the condensate water.

[0033] Optionally, the first ventilation channel is arranged in a box body of the refrigerator, and the second ventilation channel is arranged in a foaming layer between the box body of the refrigerator and the shell.

[0034] Optionally, the drawer compartment bottom is provided with a second water collecting tank and a second electric heating element.

[0035] The embodiments of the present application have the following advantages:

[0036] In the embodiments of the present application, the humidity control device is connected to the drawer compartment of the refrigerator, and the humidity control device comprises a filter, a fan, a ventilation channel assembly, and a ventilation cover. The ventilation channel assembly comprises an air inlet and an air outlet, and is connected to the drawer compartment through the air outlet. The ventilation cover is arranged on the shell of the refrigerator and is connected to the air inlet, and is used for introducing external air. The fan is arranged in the ventilation channel assembly and is used for adjusting the air flow rate in the ventilation channel assembly. The filter is arranged in the ventilation channel assembly and is used for filtering the external air. When the humidity in the drawer compartment is less than a preset value, the fan is started to introduce the external air into the drawer compartment through the ventilation channel assembly and the filter to remove impurities, so as to increase the humidity in the drawer compartment. In this way, the volume waste caused by active humidity control can be improved, the volume utilization rate of the refrigerator can be improved, and the active humidity control mode can be optimized without increasing a separate water source. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structure diagram of the humidity control device in the embodiments of the present application;

[0038] Figure 2 is a sectional view of the humidity control device in the embodiments of the present application;

[0039] Figure 3is a structural diagram of a refrigerator applying a humidity control device in an embodiment of the present application;

[0040] Figure 4 is a working flowchart of the humidity control device in an embodiment of the present application.

[0041] Legend of reference signs:

[0042] humidity control device 1, humidity control film 2, temperature and humidity sensor 3, dehumidification air door 4, oxygen control film 5, drawer compartment 6, second electric heating element 61, second water collecting groove 62, drain pipe 8, box body 9, shell 10, filter 11, fan 12, ventilation duct assembly 13, first ventilation duct 131, drain hole 1311, first water collecting groove 1312, second ventilation duct 132, air outlet 133, air inlet 134, ventilation cover 14, first electric heating element 15. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0044] The current mainstream fresh-keeping function on the market mainly falls into two categories: one is passive humidity control fresh-keeping, mainly by adjusting the humidity and oxygen concentration in the compartment through humidity control film, oxygen control film, etc. to slow down the respiration of fruits and vegetables; the other is active humidity control fresh-keeping, mainly by separately adding a water box in the compartment, and then using ultrasonic technology to blow water mist into the compartment at regular intervals, so that the humidity in the drawer compartment is stabilized at a preset value. Both of these two methods have certain limitations. The humidity in the passive humidity control drawer compartment is mainly provided by the stored fruits and vegetables. The more fruits and vegetables stored in the drawer compartment, the higher the humidity in the drawer compartment, and vice versa. Therefore, when the fruits and vegetables stored in the drawer compartment are less, the humidity in the drawer compartment often fails to reach the preset value, resulting in an increase in the water loss rate of fruits and vegetables, especially the wilting, drying and water loss of leafy vegetables, which reduces the appearance, taste and nutritional content of fruits and vegetables. Active humidity control can achieve the preset humidity value regardless of the number of fruits and vegetables in the drawer compartment, but the internal volume is lost due to the water box and ultrasonic technology. In addition, in the case of too high humidity, condensate water is often formed in the drawer compartment, which is easy to breed bacteria, mold and other microorganisms, and fruits and vegetables may also be soaked and rotten, which is not conducive to the preservation of fruits and vegetables.

[0045] One of the core ideas of the embodiments of the present application is that the embodiments of the present application can start the fan to introduce the air from the outside into the drawer chamber through the ventilation channel assembly and after removing impurities through the filter, thereby increasing the humidity of the drawer chamber. In this way, the volume waste caused by active humidity control can be improved, the refrigerator volume utilization rate can be improved, and the active humidity control mode can be optimized. No separate water source needs to be added, and ultrasonic technology does not need to be used. The noise problem generated in the humidification process using ultrasonic technology can be solved, the user experience is improved, and the utilization rate of condensed water can be improved. A variety of humidification modes can be realized. Excess condensed water can be discharged through the drain hole, and the problem of food spoilage caused by excess condensed water that cannot be processed in the prior art can be solved.

[0046] Figure 1 FIG. 1 is a structural diagram of a humidity control device according to an embodiment of the present application, Figure 2 FIG. 2 is a sectional view of the humidity control device according to the embodiment of the present application.

[0047] Referring to Figures 1 to 2 The humidity control device 1 provided by the embodiments of the present application includes a filter 11, a fan 12, a ventilation channel assembly 13, and a ventilation cover 14. The humidity control device 1 is connected with a drawer chamber 6 of a refrigerator, and can be seen in Figure 3 The ventilation channel assembly 13 includes an air inlet 134 and an air outlet 133, and is connected with the drawer chamber 6 through the air outlet 133. The ventilation cover 14 is arranged on a shell 10 of the refrigerator and is connected with the air inlet 134, and is used to introduce air from the outside. The fan 12 is arranged in the ventilation channel assembly 13 and is used to adjust the air flow rate in the ventilation channel assembly 13. The filter 11 is arranged in the ventilation channel assembly 13 and is used to filter the air from the outside. By starting the fan to introduce the air from the outside into the drawer chamber through the ventilation channel assembly and after removing impurities through the filter, the humidity of the drawer chamber can be increased. The volume waste caused by active humidity control can be improved, the refrigerator volume utilization rate can be improved, and the active humidity control mode can be optimized. No separate water source needs to be added, and ultrasonic technology does not need to be used. The noise problem generated in the humidification process using ultrasonic technology can be solved, and the user experience is improved.

[0048] Exemplarily, the filter 11 can be an activated carbon box, and the activated carbon in the activated carbon box can adsorb and remove impurities in the external air, and the micropores on the activated carbon box can change the air volume and air speed, so as to achieve non-inductive air supply. Exemplarily, the activated carbon box can be arranged at the air outlet 133 of the ventilation duct assembly 13, and after filtering the external air flowing to the air outlet 133 of the ventilation duct assembly 13, the air volume and air speed are changed, and the filtered external air is sent to the drawer chamber 6 through the air outlet 133 of the ventilation duct assembly 13. The activated carbon box can also be arranged at other positions of the ventilation duct assembly 13. It should be noted that the specific form of the filter and the specific position of the filter in the ventilation duct assembly 13 can be adjusted according to actual needs in actual application, and the embodiments of the present application do not limit this.

[0049] The fan 12 is arranged in the ventilation duct assembly 13, and when the internal humidity of the drawer chamber 6 is lower than the preset value, the air flow speed in the ventilation duct assembly 13 can be increased by starting the fan 12, so that the external air can be introduced into the drawer chamber 6 more quickly, and the internal humidity of the drawer chamber 6 is increased. Of course, in addition to using the fan 12, an air pump can also be used, and any device that can increase the air flow speed in the ventilation duct assembly 63 is suitable for the embodiments of the present application, and the embodiments of the present application do not limit this. In addition, the drawer chamber 6 can be connected with the temperature and humidity sensor 3, which can be seen from Figure 3 , Figure 3 The structure diagram of the refrigerator to which the humidity control device is applied in the embodiments of the present application is shown, the temperature and humidity sensor 3 can detect the internal humidity of the drawer chamber 6, and whether the internal humidity of the drawer chamber 6 reaches the preset value is detected. When the internal humidity of the drawer chamber 6 is lower than the preset value, the fan 12 is started by the electric control mainboard, so as to increase the internal humidity of the drawer chamber 6. The preset value can be a specific value or a value range, and the specific value or the value range of the preset value can be set according to actual needs in actual application, and the embodiments of the present application do not limit this. Exemplarily, when the preset value is a value range, the preset value range can be 30%-50%, the temperature and humidity sensor 3 can detect the internal humidity of the drawer chamber 6, and whether the internal humidity of the drawer chamber 6 falls within 30%-50% is detected. If less than 30%, it is determined that the internal humidity of the drawer chamber 6 is lower than the preset value, and if greater than 50%, it is determined that the internal humidity of the drawer chamber 6 is higher than the preset value. In addition, the temperature and humidity sensor 3 can also be replaced by a humidity sensor.

[0050] The ventilation cover 14 is arranged on the shell 10 of the refrigerator and is connected with the air inlet 134. External air can be introduced into the ventilation duct assembly 13 through the opening, so that the external air is used to increase the internal humidity of the drawer compartment 6, which can effectively solve the problem that the volume of the compartment of the mainstream refrigerator on the market is reduced due to the use of an additional water source device for active humidity control, and improve the volume utilization rate of the refrigerator. At the same time, the noise problem generated in the humidification process by using the ultrasonic technology in the prior art is solved, and the user experience is improved.

[0051] The shell 10 of the refrigerator includes a back plate of the refrigerator. Exemplarily, the ventilation cover 14 can be arranged on the back plate of the refrigerator. In actual application, the specific position of the ventilation cover 14 arranged on the shell 10 can be set according to actual needs, and the embodiment of the present application does not limit this.

[0052] In the embodiment of the present application, the ventilation duct assembly 13 includes a first ventilation duct 131 and a second ventilation duct 132. The first ventilation duct 131 is connected with the drawer compartment 6 and the second ventilation duct 132, respectively. The second ventilation duct 132 is connected with the ventilation cover 14. The fan 12 can be arranged inside the first ventilation duct 131. The first ventilation duct 131 is connected with the second ventilation duct 132. The cross section inside the first ventilation duct 131 is larger than the cross section inside the second ventilation duct 132. The purpose of the large cross section is to connect together, so as to arrange the fan inside the first ventilation duct 131. The size of the fan needs to be adapted to avoid air leakage. If a small-sized element such as an air pump is used to replace the fan 12, the cross section inside the first ventilation duct 131 can be reduced. Of course, the cross section inside the first ventilation duct 131 can also be the same as the cross section inside the second ventilation duct 132. In actual application, the cross sections can be adjusted according to actual needs, and the embodiment of the present application does not limit this.

[0053] In the embodiment of the present application, the ventilation duct assembly 13 is provided with a first water collecting groove 1312 for collecting condensate water formed by external air in the ventilation duct assembly 13. The humidity control device 1 further includes a first electric heating element 15 arranged in the first ventilation duct 131. The first electric heating element 15 is used to heat the condensate water in the first water collecting groove 1312.

[0054] The first water collecting groove 1312 is used to collect the condensate water formed by external air in the ventilation duct assembly 13. The cross section of the ventilation duct assembly 13 is arc-shaped. The condensate water formed on the inner wall of the ventilation duct assembly 13 can automatically flow into the first water collecting groove 1312 as a reserve water source. When the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 is lower than a preset value, the first electric heating element 15 can heat the condensate water in the first water collecting groove 1312, so as to improve the utilization rate of the condensate water. By using the humidification mode of the newly added electric heating, multiple humidification modes are combined, and better humidification effect can be achieved.

[0055] In the embodiment of the present application, the first water collecting groove 1312 is arranged at the port where the first air duct 131 connects to the second air duct 132; and the first electric heating element 15 is arranged around the first air duct 131.

[0056] The temperature of the drawer compartment 6 inside the refrigerator is low, and compared with the air inside the refrigerator, the outside air is hot and humid. When the outside air enters the drawer compartment 6 through the second air duct 132, condensate water is easily formed at the connection between the second air duct 132 and the first air duct 131. The first water collecting groove 1312 arranged at the port where the first air duct 131 connects to the second air duct 132 can collect the condensate water. Exemplarily, the first electric heating element 15 can be arranged around the first air duct 131. In this way, the first electric heating element 15 can heat the condensate water in the first water collecting groove 1312 arranged at the port where the first air duct 131 connects to the second air duct 132, so that the condensate water in the first air duct 131 is evaporated and converted into water mist, thereby increasing the internal humidity of the drawer compartment 6. The first electric heating element 15 can be an electric heating wire.

[0057] The electric heating wire is heated by using a metal conductive material. Exemplarily, the heating wire can be made of nickel-chromium alloy or copper-nickel alloy. These materials have excellent electrical and physical properties, can be quickly heated at a lower voltage, and will not have color variation and other reactions at high temperatures. The material of the electric heating wire can be selected according to actual conditions in actual application, and the embodiment of the present application does not limit this.

[0058] When the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 is lower than the preset value, the electric control mainboard controls the fan 12 to start. The starting of the fan 12 can increase the air flow speed in the air duct assembly 13 of the humidity control device 1, and more quickly introduce the outside air into the drawer compartment 6, thereby increasing the internal humidity of the drawer compartment 6. When the fan 12 of the humidity control device 1 runs for a preset running time after starting, the temperature and humidity sensor 3 detects the internal humidity of the drawer compartment 6 again. If the internal humidity of the drawer compartment 6 is still lower than the preset value, the fan 12 of the humidity control device 1 continues to run, and the first electric heating element 15 is started to electrically heat the condensate water in the first water collecting groove 1312. The condensate water will evaporate under heating, and can increase the internal humidity of the drawer compartment 6 in a short time. By electrically heating the condensate water, the fan 12 of the humidity control device 1 can assist the fan 12 to humidify under the condition of running and humidifying, so that the internal humidity of the drawer compartment 6 reaches the preset value. The preset running time can be set according to actual needs in actual application, and the embodiment of the present application does not limit this.

[0059] In the embodiment of the present application, the first ventilation channel 131 is provided with a drain hole 1311 for discharging the condensed water exceeding the capacity of the first water collecting groove 1312. Exemplarily, the drain hole 1311 can be arranged at the middle part of the first ventilation channel 131. The condensed water formed on the inner wall of the first ventilation channel 131 is automatically converged into the first water collecting groove 1312, and part of the condensed water is used as the reserve water source for the electric heating of the first electric heating element 15. The other part of the condensed water, i.e. the excess condensed water, can be discharged through the drain hole 1311.

[0060] In the embodiment of the present application, a drain pipe 8 corresponding to the drain hole 1311 is arranged for discharging the condensed water. Exemplarily, the drain pipe 8 can be suspended directly below the drain hole 1311. The condensed water passing through the drain hole 1311 can drop into the drain pipe 8 by dripping. The drain pipe 8 can also be connected to the drain pipe 8. The condensed water passing through the drain hole 1311 can directly flow into the drain pipe 8. Finally, the condensed water in the drain pipe 8 is discharged into a water pan through the drain pipe 8. The drain pipe 8 is connected to the water pan (not shown in the figure). The water pan is used to collect the excess condensed water flowing through the drain pipe 8, which can prevent the excess condensed water from causing the fruit and vegetable food materials stored in the drawer compartment 6 to rot, thereby keeping the fruit and vegetable food materials fresh. The arrangement of the drain pipe 8 corresponding to the drain hole 1311 can be adjusted according to actual needs in practical application, which is not limited in the embodiment of the present application. By arranging the first water collecting groove 1312 and the drain hole 1311 in the first ventilation channel 131, the condensed water collected by the first water collecting groove 1312 can be humidified by the electric heating of the first electric heating element 15. This not only increases the humidity of the drawer compartment 6, but also improves the utilization rate of the condensed water, and enriches the humidification method. In addition, the excess condensed water can be discharged through the drain hole 1311.

[0061] In the embodiment of the present application, the first ventilation channel 131 is arranged in the box body 9 of the refrigerator, and the second ventilation channel 132 is arranged in the foaming layer between the box body 9 and the shell 10 of the refrigerator.

[0062] Exemplarily, the foaming layer is usually made of foaming materials such as polyurethane foam or polystyrene foam. These materials have good heat preservation and heat insulation properties, which can effectively prevent cold air leakage and hot air entry, thereby ensuring the temperature stability of the refrigerator. The foaming layer of the refrigerator is the key to ensuring the heat preservation performance of the refrigerator. If the foaming layer of the refrigerator is not thick enough or the material is not good, it will cause cold air leakage and hot air entry, thereby affecting the refrigeration effect of the refrigerator. If the foaming layer of the refrigerator is appropriately thick and the material is good, it can effectively maintain the temperature stability of the refrigerator, thereby ensuring the refrigeration effect of the refrigerator.

[0063] The second ventilation channel 132 can be pre-embedded in the foaming layer between the box body 9 and the shell 10, the ventilation cover 14 is arranged on the shell 10 of the refrigerator, the first ventilation channel 131 is connected with the drawer compartment 6, and the ventilation cover 14 and the first ventilation channel 131 and the second ventilation channel 132 are assembled to form a ventilation channel penetrating through the foaming layer of the refrigerator and connecting the drawer compartment 6 of the refrigerator with the outside. By pre-embedding the second ventilation channel 132 in the foaming layer between the box body 9 and the shell 10, the volume of the drawer compartment 6 is not occupied, the problem of waste of the volume of the compartment caused by increasing the water box and the like in the existing active humidity control is improved, and the volume utilization rate of the refrigerator is improved.

[0064] When the internal humidity of the drawer compartment 6 is lower than the preset value, the embodiment of the present application introduces external air through the ventilation cover 14 and the ventilation channel assembly 13, uses the fan 12 to increase the air flow speed in the ventilation channel assembly 13, removes impurities in the external air through the filter 11, and then introduces the filtered air into the drawer compartment 6, thereby increasing the internal humidity of the drawer compartment 6. The problem of waste of the volume of the compartment caused by the need to set a water box in the existing active humidity control technology is solved, and the embodiment of the present application realizes humidification by introducing external air, does not need the user to add water regularly, and does not need to realize humidification through ultrasonic technology, thereby avoiding the relatively large noise generated when humidification is realized through ultrasonic technology, does not need to separately add a water source, and improves the user experience. In addition, the first electric heating element 15, the first water collecting groove 1312 and the drain hole 1311 are arranged, the condensed water can be collected as a standby water source, and when needed, the condensed water is evaporated into water mist through electric heating, thereby increasing the internal humidity of the drawer compartment 6, thereby improving the utilization rate of the condensed water, realizing multiple humidification modes, and the excess condensed water can be discharged through the drain hole 1311, thereby solving the problem that the excess condensed water cannot be treated in the prior art, thereby intensifying the rotting of food materials.

[0065] Reference Figure 3 The refrigerator includes a humidity control device 1, a humidity control film 2, a temperature and humidity sensor 3, a dehumidification air door 4, an oxygen control film 5, and a drawer compartment 6. The structure of the humidity control device 1 is similar to that of the foregoing embodiments, and can be referred to each other, and the present embodiment will not be described again.

[0066] In the embodiment of the present application, the second electric heating element 61 and the second water collecting groove 62 are arranged at the bottom of the drawer compartment 6. The first ventilation channel 131 is easy to form condensate water due to temperature difference at the connection with the drawer compartment 6, and the second water collecting groove 62 is used to collect the condensate water formed at the connection of the first ventilation channel 131 with the drawer compartment 6, and the collected condensate water is used as a reserve water source. When the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 is lower than the preset value, the second electric heating element 61 can heat the condensate water in the second water collecting groove 62 to increase the internal humidity of the drawer compartment 6. The second electric heating element 61 can be an electric heating wire, of course, the specific form of the second electric heating element 61 can be set according to actual needs in actual application, and the embodiment of the present application does not limit this.

[0067] The drawer compartment 6 can be used to store fruits, vegetables and other food materials, and can preserve the stored fruits, vegetables and other food materials. The user can adjust the internal humidity of the drawer compartment 6 according to the type of fruits and vegetables stored in the drawer compartment 6 to prolong the preservation period of the food materials. For example, the user can adjust the internal humidity of the drawer compartment 6 to 30%-50%, and the temperature and humidity sensor 3 detects whether the internal humidity of the drawer compartment 6 falls within the range of 30%-50%. If it is less than 30%, it is determined that the internal humidity of the drawer compartment 6 is lower than the preset value, and if it is greater than 50%, it is determined that the internal humidity of the drawer compartment 6 is higher than the preset value. For example, the user can adjust and set the internal humidity of the drawer compartment 6 through the physical adjustment button, or can adjust and set the internal humidity of the drawer compartment 6 through the touch panel. The way the user adjusts and sets the internal humidity of the drawer compartment 6 can be set according to actual needs in actual application, and the embodiment of the present application does not limit this.

[0068] The temperature and humidity sensor 3 is connected with the drawer compartment 6, and the temperature and humidity sensor 3 can detect the internal humidity of the drawer compartment 6 to detect whether the internal humidity of the drawer compartment 6 reaches the preset value. The electric control mainboard can perform corresponding operations according to the detection result to make the internal humidity of the drawer compartment 6 reach the preset value. The preset value can be a specific value or a value range, and the specific value or the value range of the preset value can be set according to actual needs in actual application, and the embodiment of the present application does not limit this. The temperature and humidity sensor 3 can also be replaced by a humidity sensor.

[0069] When the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 is lower than the preset value, the electric control mainboard controls the fan 12 of the humidity control device 1 to start. The start of the fan 12 of the humidity control device 1 can increase the air flow speed in the ventilation channel assembly 13 of the humidity control device 1, and more quickly introduce external air into the drawer compartment 6, thereby increasing the internal humidity of the drawer compartment 6.

[0070] When the running time of the fan 12 of the humidity control device 1 reaches the preset running time after starting, the temperature and humidity sensor 3 detects the internal humidity of the drawer compartment 6 again. If the internal humidity of the drawer compartment 6 reaches the preset value, the electric control main board controls the fan 12 of the humidity control device 1 to stop running, so that the internal humidity of the drawer compartment 6 reaches the preset value and remains at the preset value. The preset running time can be set according to actual needs in actual application, and the embodiment of the present application does not limit this. For example, the preset running time can be 30 seconds. When the running time of the fan 12 of the humidity control device 1 reaches the preset running time after starting, the temperature and humidity sensor 3 detects the internal humidity of the drawer compartment 6 again. If the internal humidity of the drawer compartment 6 is still lower than the preset value, the fan 12 of the humidity control device 1 continues to run, and the first electric heating element 15 in the humidity control device 1 is started to electrically heat the condensed water in the first water collecting groove 1312, and the second electric heating element 61 arranged at the bottom of the drawer compartment 6 is started to electrically heat the condensed water in the second water collecting groove 62. The condensed water will evaporate under heating and can increase the internal humidity of the drawer compartment 6 in a short time. By electrically heating the condensed water, the fan 12 of the humidity control device 1 can assist the fan 12 to humidify under the condition of running, so that the internal humidity of the drawer compartment 6 reaches the preset value. When the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 reaches the preset value, the electric control main board controls the fan 12 of the humidity control device 1 to stop running and closes the first electric heating element 15 and the second electric heating element 61, so that the internal humidity of the drawer compartment 6 reaches the preset value and remains at the preset value.

[0071] By electrically heating the condensed water by the first electric heating element 15 and the second electric heating element 61, on the one hand, when the user requires high internal humidity of the drawer compartment 6 and the fan 12 of the humidity control device 1 cannot extract external air to reach the preset humidity value required by the user in a short time, the first electric heating element 15 and the second electric heating element 61 evaporate the condensed water by electrical heating to increase the internal humidity of the drawer compartment 6 in a short time. On the other hand, the condensed water in the first water collecting groove 1312 and the second water collecting groove 62 can be evaporated regularly to prevent excess condensed water from overflowing.

[0072] The dehumidification air door 4 is connected with the drawer compartment 6, the dehumidification air door 4 can adjust the high and low of the internal humidity of the drawer compartment 6 through the opening and closing state of the air door, when the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 is higher than the preset value, the fan 12 of the humidity control device 1 is not started, the electric control mainboard can control the dehumidification air door 4 connected with the drawer compartment 6 to open the air door, so that the internal humid air of the drawer compartment 6 is discharged to the outside of the drawer compartment 6 through air convection, to prevent the internal humidity of the drawer compartment 6 from being too high to form condensate water, which causes the condensate water to accelerate the rotting of fruits and vegetables and other food materials, the internal humid air of the drawer compartment 6 is discharged to the outside of the drawer compartment 6 through air convection through the air door, which can reduce the internal humidity of the drawer compartment 6, when the opening time of the air door reaches the preset opening time, the temperature and humidity sensor 3 detects the internal humidity of the drawer compartment 6 again, when the temperature and humidity sensor 3 detects that the internal humidity of the drawer compartment 6 reaches the preset value, the electric control mainboard controls the dehumidification air door 4 connected with the drawer compartment 6 to close the air door, so that the internal humid air of the drawer compartment 6 is prevented from being discharged to the outside of the drawer compartment 6 through air convection through the air door, so that the internal humidity of the drawer compartment 6 reaches the preset value and remains at the preset value. The preset opening time can be set according to actual needs in actual application, and the embodiments of the present application do not limit this. The dehumidification air door 4 can be replaced by a cover plate combined with a gear motor, and the specific form of the dehumidification air door 4 can be set according to actual needs in actual application, and the embodiments of the present application do not limit this.

[0073] Exemplarily, when the fruits and vegetables stored in the drawer compartment 6 are more, the water vapor generated by the transpiration of the plant type fresh food materials such as fruits and vegetables is also more, the internal humidity of the drawer compartment 6 is relatively high, and condensate water is easily generated under the condition of low temperature in the refrigerator, the accumulation of condensate water is easy to breed bacteria, mold and other microorganisms, and fruits and vegetables may be soaked and rotten, which is not conducive to the preservation of fruits and vegetables, at this time, the dehumidification air door 4 is opened to discharge the excess water vapor, so as to ensure that the drawer compartment 6 is always in a suitable humidity.

[0074] The humidity control film 2 is connected with the drawer compartment 6, the oxygen control film 5 is connected with the drawer compartment 6, and the humidity control film 2 and the oxygen control film 5 can assist in adjusting the internal humidity and oxygen concentration of the drawer compartment 6.

[0075] Referring to Figure 4Fig. 6 shows a schematic diagram of the working process of the humidity control device in the embodiment of the present application. The user can preset the humidity value of the drawer chamber 6, and the temperature and humidity sensor 3 judges whether the internal humidity of the drawer chamber 6 reaches the preset value. When the internal humidity of the drawer chamber 6 is less than the preset value, the fan 12 is started to introduce external air for humidification. The internal humidity of the drawer chamber 6 is judged again. If it is still less than the preset value, the auxiliary electric heating evaporation condensate is started to humidify synchronously. If the preset value is reached, the fan 12 is closed to stop the introduction of external air for humidification, so that the internal humidity of the drawer chamber 6 is maintained at the preset value.

[0076] When the temperature and humidity sensor 3 detects that the internal humidity of the drawer chamber 6 is greater than the preset value, the dehumidification air door is opened to reduce the internal humidity of the drawer chamber 6. The internal humidity of the drawer chamber 6 is judged again. If it is still greater than the preset value, the dehumidification air door is kept in the open state. If the internal humidity of the drawer chamber 6 reaches the preset value, the air door is closed to stop dehumidification, so that the internal humidity of the drawer chamber 6 is maintained at the preset value.

[0077] It should be noted that, for the method embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the embodiments of the present application are not limited by the action order described, because according to the embodiments of the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification all belong to preferred embodiments, and the actions involved are not necessarily the ones that the embodiments of the present application must have.

[0078] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0079] Finally, it should also be noted that, in this document, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or terminal device including the element.

[0080] The above describes in detail the moisture control device and the refrigerator provided by the present application. The principles and implementation manners of the present application are described by using specific examples. The above description of the examples is only used to help understand the method of the present application and the core idea thereof. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In summary, the content of the present description should not be understood as a limitation on the present application.

Claims

1. A humidity control device, characterized in that, Applied to a refrigerator, the humidity control device is connected to the drawer compartment of the refrigerator, and the humidity control device includes: a filter, a fan, a ventilation duct assembly, a ventilation cover, and a first electric heating element; The ventilation duct assembly includes an air inlet and an air outlet, and is connected to the drawer compartment through the air outlet; The ventilation cover is installed on the shell of the refrigerator and connected to the air inlet for introducing outside air; The fan is installed inside the ventilation duct assembly and is used to adjust the airflow rate in the ventilation duct assembly; The filter is disposed within the ventilation duct assembly and is used to filter the outside air; The ventilation duct assembly is provided with a first water collection tank, which is used to collect condensate formed by the outside air in the ventilation duct assembly. The first electric heating element is used to heat the condensate in the first water collection tank.

2. The humidity control device according to claim 1, characterized in that, The ventilation duct assembly includes a first ventilation duct and a second ventilation duct; The first ventilation duct is connected to the drawer compartment and the second ventilation duct, and the second ventilation duct is connected to the ventilation cover.

3. The humidity control device according to claim 2, characterized in that, The fan is installed inside the first ventilation duct.

4. The humidity control device according to claim 2, characterized in that, The first electric heating element is disposed in the first ventilation duct.

5. The humidity control device according to claim 4, characterized in that, The first water collection tank is located at the port where the first ventilation duct connects to the second ventilation duct; the first electric heating element is arranged to enclose the first ventilation duct.

6. The humidity control device according to claim 4, characterized in that, The first ventilation duct is provided with a drain hole for discharging condensate that exceeds the capacity of the first water collection tank.

7. The humidity control device according to claim 6, characterized in that, Also includes: A drain pipe corresponding to the drain hole is used to drain condensate.

8. The humidity control device according to claim 2, characterized in that, The first ventilation duct is disposed in the refrigerator liner, and the second ventilation duct is disposed in the foam layer between the refrigerator liner and the shell.

9. A refrigerator, characterized in that, It includes a drawer compartment and a humidity control device as described in any one of claims 1-8.

10. The refrigerator according to claim 9, characterized in that, The bottom of the drawer compartment is provided with a second water collection tank and a second electric heating element. The second water collection tank is used to collect condensate, and the second electric heating element is used to heat the condensate in the second water collection tank.

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