Refrigeration equipment

Abstract

The utility model discloses refrigeration equipment which comprises a fresh-keeping chamber, a cold air supply path, an oxygen adjusting module and a moisture permeable module, and the cold air supply path is communicated with a refrigeration system and supplies cold air to the outer side of the fresh-keeping chamber; the oxygen adjusting module is used for adjusting the oxygen concentration in the fresh-keeping chamber, and the humidity difference between the fresh-keeping chamber and the outer side of the fresh-keeping chamber is adjusted through the moisture permeable module. According to the refrigeration equipment, the oxygen concentration, humidity and temperature can be accurately adjusted, the oxygen adjusting module ensures the maintenance of a low-oxygen or high-oxygen environment, the moisture permeable module adjusts the humidity difference, the relatively high humidity in the fresh-keeping chamber can be maintained, the moisture of food materials can be kept, the condensation or frosting phenomenon can be avoided, and the refrigeration efficiency is improved. The food materials can be stored in an environment with proper oxygen concentration, proper temperature and proper humidity, and the fresh-keeping effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of refrigeration and preservation, and particularly relates to a refrigeration equipment. BACKGROUND

[0002] With the increasing demand of modern families for food preservation, users have higher requirements for the preservation environment of fresh vegetables, fresh meat and other fresh food materials in household refrigeration equipment. The existing refrigeration equipment usually uses direct cooling or simple air blowing to achieve food storage. Such preservation mode is not necessarily the most ideal storage mode for keeping food fresh for a long time.

[0003] If more parameters of the storage conditions of food are provided, the increase of these parameters increases the complexity of the equipment and also faces problems such as how to ensure the running efficiency, control accuracy and temperature distribution uniformity of each dimension, and there may be conflicts between multiple dimensions, for example, when cold air is blown into the food for refrigeration, the humidity is changed, and when the humidity is adjusted, the temperature fluctuates. Therefore, the existing refrigeration equipment still has some obstacles to overcome in food preservation. SUMMARY

[0004] To solve the problem of how to control the storage environment parameters of food in the prior art, the purpose of the utility model is to provide a refrigeration equipment that can accurately control the storage environment of food from multiple dimensions such as temperature, humidity and oxygen content.

[0005] To achieve the above-mentioned purpose of the utility model, an embodiment of the utility model provides a refrigeration equipment, which comprises:

[0006] a preservation chamber;

[0007] a cold air supply path, which is connected to a refrigeration system and supplies cold air to the outside of the preservation chamber;

[0008] an oxygen adjusting module, which is used to adjust the oxygen concentration in the preservation chamber;

[0009] a moisture permeable module, which is used to adjust the humidity difference between the preservation chamber and its outside.

[0010] As a further improvement of the utility model, a groove is arranged on the upper wall of the preservation chamber, the moisture permeable module is accommodated in the groove, and the cold air of the cold air supply path blows over the upper surface of the moisture permeable module.

[0011] As a further improvement of the utility model, the cold air supply path comprises an air outlet, a plurality of air deflectors are arranged on the upper wall, the plurality of air deflectors are arranged opposite to the air outlet, and the plurality of air deflectors guide the cold air to a plurality of directions covering the moisture permeable module.

[0012] As a further improvement of the utility model, the plurality of air deflector includes left air deflector, right air deflector and a plurality of intermediate air deflector, left air deflector and its one intermediate air deflector between the left air path is formed, the right air deflector and its one intermediate air deflector between the right air path is formed, the left air path and the right air path The air volume is basically same.

[0013] As a further improvement of the utility model, the intermediate air deflector extends along the front and rear direction, the distance between the left air deflector and the intermediate air deflector gradually increases along the airflow direction, and the distance between the right air deflector and the intermediate air deflector gradually increases along the airflow direction.

[0014] As a further improvement of the utility model, the refrigeration equipment further includes a temperature sensor, the temperature sensor is arranged on the outer side of the upper wall, and the left air deflector or the right air deflector separates the temperature sensor from the cold air of the cold air supply path.

[0015] As a further improvement of the utility model, the end of the left air deflector and / or the right air deflector away from the air outlet is provided with an air outlet, the side wall of the fresh-keeping compartment is provided with an air guide wall, the lower part of the fresh-keeping compartment is provided with a return air cavity, and the cold air supply path includes a return air outlet. The cold air blown out from the air outlet is sequentially blown to the return air outlet through the air guide wall and the return air cavity.

[0016] As a further improvement of the utility model, the refrigeration equipment further includes a drawer arranged in the fresh-keeping compartment, the fresh-keeping compartment includes a forward opening, and the drawer has an upward opening. When the drawer is located in the fresh-keeping compartment, the drawer and the door frame of the fresh-keeping compartment are sealed and abutted by a first sealing ring.

[0017] As a further improvement of the utility model, the fresh-keeping compartment includes a first air inlet and a first air return port, the drawer includes a second air inlet and a second air return port, the oxygen regulating module supplies air to the first air inlet, and the air is sequentially returned to the oxygen regulating module through the second air inlet, the second air return port and the first air return port.

[0018] As a further improvement of the utility model, the oxygen regulating module includes an air outlet and a third air return port, and the air outlet and the third air return port are both directed to the bottom wall of the fresh-keeping compartment.

[0019] The rear wall of the fresh-keeping compartment is provided with an oxygen regulating air path, the oxygen regulating air path includes a gas groove arranged on the rear wall, a second sealing ring and a back plate, the back plate and the rear wall abut the second sealing ring, one end of the gas groove extends to the air outlet, and the other end extends to the first air inlet in the middle of the rear wall.

[0020] As a further improvement of the utility model, the first gas return port is arranged on the bottom wall of the fresh-keeping chamber, and the second gas return port is arranged on the side and bottom of the drawer.

[0021] As a further improvement of the utility model, the moisture permeable module is arranged on the rear wall of the drawer.

[0022] As a further improvement of the utility model, the oxygen adjusting module is used to increase the oxygen concentration in the fresh-keeping chamber to be higher than the oxygen concentration outside.

[0023] As a further improvement of the utility model, the oxygen adjusting module is used to decrease the oxygen concentration in the fresh-keeping chamber to be lower than the oxygen concentration outside.

[0024] As a further improvement of the utility model, the moisture permeable module is arranged as a salt solution or a solid adsorbent or a water washing gel or an electrolytic dehumidification module.

[0025] Compared with the common technology, the utility model has the following beneficial effects: the refrigeration equipment can realize accurate adjustment of oxygen concentration, humidity and temperature, the oxygen adjusting module ensures the maintenance of low-oxygen or high-oxygen environment, for example, low-oxygen is used to inhibit the respiration of food materials to prolong the fresh-keeping period; the moisture permeable module adjusts the humidity difference, which can not only maintain relatively high humidity in the fresh-keeping chamber to keep the moisture of food materials, but also can avoid the condensation or frosting phenomenon; the cold air path supplies cold air outside the fresh-keeping chamber, which can not only ensure uniform distribution of cold air, but also maintain the relative sealing of the fresh-keeping chamber, avoid the influence of cold air on the oxygen content or humidity in the fresh-keeping chamber, and simultaneously control the oxygen, humidity and temperature, so that the food materials can be stored in an environment with suitable oxygen concentration, temperature and humidity, the nutrition and freshness of the food materials are maximally maintained, the fresh-keeping effect is greatly improved, and the use experience of users is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of the refrigeration equipment of an embodiment of the utility model;

[0027] Figure 2 is a partial structural schematic view of the refrigeration equipment of an embodiment of the utility model;

[0028] Figure 3 is Figure 2 the explosion view of the structure in

[0029] Figure 4 is Figure 2 the sectional view of the structure in

[0030] Figure 5 is a front view structural schematic view of the fresh-keeping chamber of an embodiment of the utility model;

[0031] Figure 6 is the explosion view of the rear view angle of the fresh-keeping compartment of an embodiment of the utility model;

[0032] Figure 7 is the top view of the fresh-keeping compartment of an embodiment of the utility model;

[0033] Figure 8 is the bottom view of the fresh-keeping compartment of an embodiment of the utility model;

[0034] Figure 9 is the structural schematic view of the drawer of an embodiment of the utility model;

[0035] Among them, 100, refrigeration equipment;10, fresh-keeping compartment;101, door frame;102, opening;11, upper wall;111, left air deflector;112, middle air deflector;113, right air deflector;114, left air path;115, right air path;116, air outlet;117, groove;118, temperature sensor;12, back wall;121, air groove;122, first air inlet;123, back plate;124, second sealing ring;13, side wall;14, bottom wall;20, drawer;201, open mouth;21, second air inlet;22, second air return;30, moisture-permeable module;40, air duct back plate;41, air outlet hole;51, air outlet;52, third air return;60, refrigeration compartment;70, first sealing ring. DETAILED DESCRIPTION

[0036] The utility model will be described in detail below in combination with the specific implementation of the drawings shown. But these implementation does not limit the utility model, the conversion of structure, method or function that the ordinary skill in the art makes according to these implementation is included in the protection scope of the utility model.

[0037] It should be understood that the terms such as "upper", "above", "lower", "below" used herein to indicate the spatial relative position are for the purpose of convenient description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms can be intended to include different orientations of the device in use or work in addition to the orientation shown in the drawings.

[0038] An embodiment of the utility model provides a kind of refrigeration equipment that can accurately regulate and control the storage environment of food material from temperature, humidity, oxygen content etc.

[0039] The refrigeration equipment 100 of this embodiment can be refrigerator, refrigerator, wine cabinet, refrigerated cabinet etc., the overall structure of refrigerator is shown as follows in the refrigeration equipment 100 is taken as example to be explained, refrigerator. Figure 1

[0040] ​The refrigerator includes a refrigeration system, a refrigeration compartment, a fresh-keeping compartment 10, a cooling air supply circuit, an oxygen control module, and a humidity control module 30. The refrigeration system includes a compressor, condenser, capillary tube, evaporator, fan, and refrigeration piping. The evaporator can be located in the evaporator chamber, and there can be one or more evaporators. For example, in a dual-system refrigerator with separate refrigeration compartments 60 and 60, a separate refrigeration evaporator and a separate refrigeration evaporator can be installed. The cooling air supply circuit connects the fresh-keeping compartment 10, the refrigeration compartment, and the refrigeration system. A fan can be installed in the cooling air supply circuit to blow the cold air from the evaporator in the evaporator chamber to the refrigeration compartment and the fresh-keeping compartment 10.

[0041] The refrigeration compartments may include a refrigerator compartment 60, a freezer compartment, a variable temperature compartment, etc. The following description of the refrigeration compartments outside the fresh food compartment 10 will take the refrigerator compartment 60 as an example.

[0042] like Figures 1 to 3 As shown, the fresh food compartment 10 is a compartment specifically designed for the preservation of fresh ingredients. The humidity and / or oxygen concentration in the fresh food compartment 10 are adjustable. The fresh food compartment 10 includes a cavity with an opening 102. A drawer 20 can be accommodated in the cavity through the opening 102. The drawer 20 includes an opening 201. Users can pull out the drawer 20 through the opening 102 and take ingredients into the drawer 20 by opening it.

[0043] To clearly express the positions and directions described in this embodiment, in this embodiment, the direction of gravity is defined as up and down, that is, the direction of gravity is down and the opposite direction is up. When the user operates the items inside the refrigerator, the user is defined as standing in front of the refrigerator, and the opposite direction is behind. The two sides of the plane containing the front, back, up, and down are the left and right sides, respectively. Correspondingly, the opening 102 is located in front of the fresh food compartment 10, the opening 201 is located above the drawer 20, and the drawer 20 is pushed and pulled in the front-back direction.

[0044] As described in the background section, food storage also requires more controllable storage conditions, such as temperature, humidity, and oxygen content.

[0045] Taking humidity control as an example, the humidity difference between the fresh food compartment 10 and the outside can be adjusted by the moisture permeation module 30. The humidity that needs to be adjusted in the fresh food compartment 10 can be set as needed. For example, dry food is suitable for lower humidity, while fresh vegetables and fruits are suitable for higher humidity.

[0046] The moisture permeable module 30 has the characteristic that when the humidity inside the drawer 20 is higher than the humidity outside the drawer 20, the passive moisture permeable ability of the moisture permeable module 30 can take the water vapor in the fresh-keeping chamber 10 to the outside of the fresh-keeping chamber 10, and the faster the airflow speed outside the fresh-keeping chamber 10, the lower the external air pressure, and the stronger the passive dehumidification ability of the moisture permeable module 30. Conversely, if the airflow speed outside the fresh-keeping chamber 10 is slow, the moisture permeable ability of the moisture permeable module 30 is weak, and the humidity in the fresh-keeping chamber 10 can be maintained at a higher level, that is, the higher the wind speed outside the fresh-keeping chamber 10, the lower the humidity in the fresh-keeping chamber 10, and the lower the wind speed outside the fresh-keeping chamber 10, the higher the humidity in the fresh-keeping chamber 10.

[0047] A humidity sensor can be arranged in the fresh-keeping chamber 10 to detect the humidity in the drawer 20 in real time. Subsequently, the wind speed can be adjusted according to the detection result of the humidity, that is, the wind speed can be adjusted in time according to the actual humidity demand, so that the humidity in the drawer 20 is always within the most suitable range. When the humidity is high and needs to be reduced, the wind speed can be increased accordingly, and vice versa, when the humidity is relatively low, the wind speed can be reduced to slow down the evaporation of water vapor in the moisture permeable module 30. The adjustment method of the wind speed can control the different duty cycles of the fan, for example, the duty cycle is within the interval of 30% to 70%, and different humidity is matched with different duty cycle. This design can effectively prevent the problem of dry environment caused by too low humidity or condensation or frosting caused by too high humidity, thereby improving the overall preservation effect.

[0048] The oxygen adjusting module is used to adjust the oxygen concentration in the fresh-keeping chamber 10, and the oxygen adjusting module can adjust the oxygen concentration in the fresh-keeping chamber 10 to be lower than the oxygen concentration outside or higher than the oxygen concentration outside to adapt to the needs of different food materials.

[0049] Taking the oxygen content adjustment as an example, some fresh food materials can inhibit their respiration in a low-oxygen environment, significantly reduce the oxidation speed of the food materials, reduce the reproduction of microorganisms, and prolong the preservation time. Especially for some fruits and vegetables that are prone to spoilage, the preservation effect in such an environment is particularly significant. The low-oxygen environment greatly improves the preservation ability of some food materials, making them suitable for more high-end food storage needs.

[0050] The oxygen concentration of the external atmosphere is generally about 21%, and the oxygen concentration of the fresh-keeping chamber 10 can be reduced to the range of 17% to 20%.

[0051] For example, the oxygen content is adjusted to be higher. Some food materials have better storage effect in the environment with higher oxygen concentration, such as fresh pork, beef and mutton. Higher oxygen concentration in the high-oxygen packaging can inhibit the growth and reproduction of anaerobic bacteria. Higher oxygen concentration can combine with deoxy myoglobin on the surface of the meat to form a thicker layer of oxygenated myoglobin, maintain the red color of the meat, and improve the color stability of the meat. Meanwhile, higher oxygen concentration can protect the color of the meat, because lower oxygen concentration can induce the oxidation of deoxy myoglobin to high-iron myoglobin. Under the condition of higher oxygen concentration, the surface of the meat is mainly oxygenated myoglobin, which cannot be directly oxidized to high-iron myoglobin.

[0052] By adjusting the oxygen concentration to be higher than the external environment, for example, the oxygen concentration in the fresh-keeping compartment 10 can be adjusted to the range of 22% to 25%. The oxygen adjusting module can provide a more suitable storage environment for these food materials, maximize the preservation period of the food materials, and maintain the best taste and nutritional ingredients.

[0053] The cooling air path of the present embodiment supplies cold air to the outside of the fresh-keeping compartment 10. The environment in the fresh-keeping compartment 10 is only directly communicated with the oxygen adjusting module, and is relatively isolated from the space outside the fresh-keeping compartment 10. The cold quantity is indirectly transmitted to the fresh-keeping compartment 10 through the outer wall of the fresh-keeping compartment 10, which avoids the direct blowing of cold air to the food materials in the drawer 20 and the direct removal of internal moisture by air flow, prevents the humidity in the drawer 20 from being too low, and also avoids the environment after oxygen content adjustment from contacting the external atmospheric environment again, causing the change of oxygen content.

[0054] In this way, the fresh-keeping compartment 10 realizes dynamic adjustment of the oxygen concentration through the oxygen adjusting module, ensures that the oxygen concentration in the room can be flexibly adjusted according to the needs of the stored food materials, and the introduction of the moisture permeable module 30 provides the fresh-keeping compartment 10 with humidity control function. By adjusting the humidity, the problem of excessive drying or dampness leading to water loss or spoilage of the food materials is avoided. Therefore, according to the characteristics of the food materials, the appropriate humidity, temperature and oxygen content are selected, and the changes brought by oxygen adjustment and humidity control are considered. After adjustment, it can be stably operated in this state, providing a better storage environment for the food materials, maximizing the nutrition and freshness, and greatly improving the preservation effect.

[0055] The oxygen adjusting module comprises at least one anode and at least one cathode. The anode is controllably connected to the positive electrode of the power supply, and the cathode is controllably connected to the negative electrode of the power supply.

[0056] In this way, when the controller controls the oxygen adjusting module to operate, under the control of the controller, the positive electrode of the power supply is connected to the anode, and the negative electrode of the power supply is connected to the cathode, that is, the power supply supplies power to the oxygen adjusting module. When the controller controls the oxygen adjusting module to stop, under the control of the controller, the positive electrode of the power supply is disconnected from the anode, and the negative electrode of the power supply is disconnected from the cathode, that is, the power supply stops supplying power to the oxygen adjusting module.

[0057] The oxygen regulating module further comprises an inner cavity capable of containing electrolyte, the first side of the cathode is exposed to the inner cavity, and the second side is exposed to the external air of the oxygen regulating module.

[0058] When the oxygen regulating module is running, i.e. in the case of power on, the cathode is used to consume oxygen in the external air of the oxygen regulating module through an electrochemical reaction, specifically, the oxygen is reduced at the cathode, and the reaction formula is O2+2H2O+4e - →4OH - In this way, an oxygen-poor fresh-keeping atmosphere can be formed outside the oxygen regulating module.

[0059] One side or both sides of the anode are exposed to the inner cavity, and the anode is used to generate oxygen in the inner cavity through an electrochemical reaction to form an oxygen-rich fresh-keeping atmosphere, specifically, OH - in the electrolyte can be oxidized at the anode to generate oxygen, and the reaction formula is 4OH - →O2+2H2O+4e - The generated oxygen is collected to form an oxygen-rich fresh-keeping atmosphere.

[0060] In this way, the oxygen concentration can be adjusted according to the needs, and a suitable oxygen-poor fresh-keeping atmosphere or oxygen-rich fresh-keeping atmosphere can be selected.

[0061] Further, as shown in Figure 3 、 4 , 5, a recess 117 is arranged on the upper wall 11 of the fresh-keeping chamber 10, and the moisture permeable module 30 is accommodated in the recess 117, and the cold air of the cold air path blows through the upper surface of the moisture permeable module 30. In this way, compared with the case where the moisture permeable module 30 is directly fixed on the upper surface of the upper wall 11, the cold air blows through the surface of the moisture permeable module 30, and the moisture permeable module 30 can minimize the blocking of the airflow on the windward surface, and the airflow blows more smoothly through the upper surface of the moisture permeable module 30. Ideally, the upper surface of the moisture permeable module 30 can be almost flush with the upper surface of the upper wall 11, or the upper surface of the moisture permeable module 30 can slightly protrude from the upper surface of the upper wall 11. In addition, the embedding of the moisture permeable module 30 in the recess 117 makes the installation more stable and reliable, and the moisture permeable module 30 accommodated in the recess 117 can be more closely combined with the upper wall 11, avoiding displacement or loosening of the moisture permeable module 30 and the upper wall 11, avoiding shaking or separation from the upper wall 11 during use, and improving the durability and stability of the entire system.

[0062] As shown in Figure 4 、 5As shown in FIG. 7, the cold air supply path includes the air outlet hole 41, and a plurality of air deflectors are arranged on the upper wall 11 and arranged opposite to the air outlet hole 41. The plurality of air deflectors guide the cold air to multiple directions covering the moisture permeable module 30. Through the reasonable layout of the air deflectors, the cold air flow is uniformly guided to every corner of the moisture permeable module 30. On the one hand, it avoids the concentrated area or dead angle of the cold air, avoids the condensate water accumulation in a certain area, enhances the working efficiency of the moisture permeable module 30, and ensures the consistency of the humidity adjustment. On the other hand, the cold air blows from multiple directions, and the cold air flow is more smooth, which ensures the uniformity of the temperature of each area of the fresh-keeping compartment 10, and solves the problem of uneven distribution of cold air.

[0063] As shown in FIG. 7, the plurality of air deflectors include a left air deflector 111, a right air deflector 113, and a plurality of intermediate air deflectors 112. The left air deflector 111 and one of the intermediate air deflectors 112 form a left air path 114, and the right air deflector 113 and one of the intermediate air deflectors 112 form a right air path 115. The air outlet amount of the left air path 114 and the right air path 115 is basically the same. In this way, the air flow on the left and right sides is balanced, so that the cold air can be more uniformly distributed, avoiding the situation that one side of the cold air is too strong or too weak, and ensuring that the food can be stored under balanced temperature and humidity conditions. Figure 7 In addition, the intermediate air deflectors 112 extend in the front-rear direction, the distance between the left air deflector 111 and the intermediate air deflector 112 gradually increases along the air flow direction, and the distance between the right air deflector 113 and the intermediate air deflector 112 gradually increases along the air flow direction.

[0064] The gradual increase in distance can adopt a straight line inclination or a circular arc structure, so that the left air deflector 111 and the right air deflector 113 form an included angle with the front-rear direction. The included angle range can be 30°-60°. In addition, according to the setting position of the temperature sensor 118 described below, the left air deflector 111 and the right air deflector 113 can give way to it.

[0065] This gradual widening design effectively optimizes the cold air flow path, avoids the generation of local air flow obstruction or vortex phenomenon, improves the smoothness of the cold air flow in the entire air path, not only helps to improve the refrigeration effect, but also prevents the energy loss of the cold air in the air path, improves the overall energy efficiency. In addition, the gradual widening design can make the cold air more uniformly distributed to the moisture permeable module 30 and the inside of the drawer 20 when passing through the air deflector, further improving the fresh-keeping effect.

[0066] As shown in FIG. 7, the plurality of air deflectors include a left air deflector 111, a right air deflector 113, and a plurality of intermediate air deflectors 112. The left air deflector 111 and one of the intermediate air deflectors 112 form a left air path 114, and the right air deflector 113 and one of the intermediate air deflectors 112 form a right air path 115. The air outlet amount of the left air path 114 and the right air path 115 is basically the same. In this way, the air flow on the left and right sides is balanced, so that the cold air can be more uniformly distributed, avoiding the situation that one side of the cold air is too strong or too weak, and ensuring that the food can be stored under balanced temperature and humidity conditions.

[0067] Figure 7 ​As shown, the refrigeration equipment 100 further comprises a temperature sensor 118, which is arranged on the outer side of the upper wall 11, and the left air deflector 111 or the right air deflector 113 separates the temperature sensor 118 from the cold air of the cold air supply path. The temperature sensor 118 can detect the temperature in the drawer 20 in real time, thereby effectively controlling the cold air temperature and ensuring that the cold air is always within the optimal fresh-keeping temperature range. In addition, if the temperature sensor 118 is in the cold air of the cold air supply path, the temperature sensor 118 directly detects the temperature of the cold air and cannot accurately reflect the temperature in the drawer 20, which is not conducive to temperature control of the drawer 20. Therefore, the setting position of the temperature sensor 118 avoids its direct exposure to the cold air flow, reduces the temperature detection error, and can further accurately control the temperature to improve the fresh-keeping quality of the food materials.

[0068] Further, as shown in Figure 6 , 7 , the end of the left air deflector 111 and / or the right air deflector 113 away from the air outlet hole 41 is provided with an air outlet 116, the side wall 13 of the fresh-keeping compartment 10 is provided with an air deflector, and the lower part of the fresh-keeping compartment 10 is provided with an air return cavity. The cold air supply path comprises an air return port. The cold air blown out of the air outlet 116 passes through the air deflector and the air return cavity in sequence and is blown to the air return port. Preferably, the end of the left air deflector 111 and the right air deflector 113 away from the air outlet hole 41 is provided with an air outlet 116, and the air outlet 116 is designed symmetrically. By providing the air outlet 116 at the end of the left air deflector 111 and / or the right air deflector 113 away from the air outlet hole 41, and providing the air deflector on the side wall 13 of the fresh-keeping compartment 10 and the air return cavity below, the closed-loop circulation of the cold air flow is realized, the cold air can effectively return on the outer side of the fresh-keeping compartment 10, and the cold air flow is more stable and effective, avoiding the stagnation of cold air in local areas or the formation of dead angles in excessive local positions which are not easy to be refrigerated.

[0069] As shown in Figure 3 , the refrigeration equipment 100 comprises a first sealing ring. When the drawer 20 is located in the fresh-keeping compartment 10, the drawer 20 and the door frame 101 of the fresh-keeping compartment 10 are sealed and abutted by the first sealing ring. The first sealing ring ensures that the drawer 20 can be tightly attached to the fresh-keeping compartment 10 when it is closed, avoiding the entry of external air into the fresh-keeping compartment 10 and destroying the low-oxygen environment.

[0070] Further, as shown in Figure 4 , 6 , 9, the fresh-keeping compartment 10 comprises a first air inlet 122 and a first air return port, and the drawer 20 comprises a second air inlet 21 and a second air return port. The oxygen adjusting module supplies air to the first air inlet 122 and then passes through the second air inlet 21, the second air return port 22 and the first air return port in sequence before returning to the oxygen adjusting module. By introducing air flow through the first air inlet 122 and then passing through the closed-loop circulation of the second air inlet 21 and the air return port inside the drawer 20, it is ensured that the oxygen can be uniformly distributed in the fresh-keeping compartment 10.

[0071] As shown in Figure 6 The oxygen adjusting module includes an air outlet 51 and a third air return port 52, both of which are directed towards the bottom wall 14 of the fresh-keeping compartment 10. The rear wall 12 of the fresh-keeping compartment 10 is provided with an oxygen adjusting air path, which includes a gas groove 121, a second sealing ring 124 and a back plate 123 provided on the rear wall 12. The back plate 123 abuts against the second sealing ring 124 between the back plate 123 and the rear wall 12. One end of the gas groove 121 extends to the air outlet 51, and the other end extends to the first air inlet 122 in the middle of the rear wall 12. In this way, the oxygen adjusting module can more accurately distribute the specially designed oxygen concentration gas into the fresh-keeping compartment 10, and the second sealing ring 124 ensures that the air flow does not leak from the gap, improving the sealing of the oxygen transmission to the fresh-keeping compartment 10.

[0072] As shown in Figure 8 The first air return port is provided on the bottom wall 14 of the fresh-keeping compartment 10, and the second air return port 22 is provided in multiple and respectively provided on the side and bottom of the drawer 20. In this way, the oxygen is adjusted from the bottom and the humidity is adjusted from the top, and the temperature is adjusted outside the fresh-keeping compartment 10, forming a reasonable space layout.

[0073] In addition, in other embodiments, in addition to being provided on the top, the moisture permeable module 30 can also be provided on the rear wall 12 of the drawer 20, and when the drawer 20 is pushed or pulled to the bottom, it is attached to the rear wall 12 with the transparent module, adjusting the humidity from the rear, and the space closer to the front of the drawer 20 is more likely to have more food, and the space closer to the rear is more likely to have less food, that is, compared to the front of the drawer 20, the space in the rear is relatively empty, so the design of the rear-mounted moisture permeable module 30 can effectively prevent the food from directly contacting the moisture permeable module 30, and can also effectively utilize the space.

[0074] In addition, the moisture permeable module 30 is provided as a salt solution or a solid adsorbent or a washing water gel or an electrolytic dehumidification module. The diversified humidity adjusting mode can be flexibly selected according to the needs to meet the preservation requirements of different users for different food.

[0075] Among them, the salt solution can be lithium bromide, lithium chloride or calcium chloride solution, etc. The pressure difference between the water vapor partial pressure of the treated air and the surface vapor pressure of the moisture absorbing solution is used as the driving force for water transfer, and the air humidity is controlled by the moisture absorbing and releasing characteristics of the solution. The electrolytic dehumidification module can apply direct current to the electrode, and use the electrolyte membrane to remove the moisture in the container. The water is decomposed into hydrogen ions and oxygen by electrolysis, the hydrogen ions migrate to the cathode side through the electrolyte membrane, combine with the oxygen in the air to form water molecules and discharge out of the container.

[0076] Compared with the prior art, the embodiment has the following beneficial effects:

[0077] The refrigeration equipment 100 can realize accurate adjustment of oxygen concentration, humidity and temperature, the oxygen adjusting module ensures maintenance of a low-oxygen or high-oxygen environment, for example, to inhibit respiration of food materials in a low-oxygen environment to prolong the preservation period; the moisture permeable module 30 adjusts humidity difference, which can maintain relatively high humidity in the preservation chamber 10 to keep moisture of food materials, and can also avoid condensation or frosting phenomenon; the cold air supply path supplies cold air outside the preservation chamber 10, which can ensure uniform distribution of cold air and maintain relative sealing of the preservation chamber 10, avoid the cold air from affecting the oxygen content or humidity in the preservation chamber 10, and simultaneously control oxygen, humidity and temperature, so that food materials can be stored in an environment with suitable oxygen concentration, temperature and humidity, maximumly maintain nutrition and freshness of the food materials, greatly improve the preservation effect, and significantly improve the user experience.

[0078] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0079] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application, and equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A refrigeration appliance characterized in that, The application relates to a refrigeration device, comprising: a fresh-keeping chamber (10); a cold air supply path connected with a refrigeration system and supplying cold air to the outside of the fresh-keeping chamber (10); an oxygen adjusting module for adjusting the oxygen concentration in the fresh-keeping chamber (10); a moisture permeation module (30) for adjusting the moisture difference between the fresh-keeping chamber (10) and the outside thereof.

2. The refrigeration appliance of claim 1, wherein, The upper wall (11) of the fresh-keeping chamber (10) is provided with a groove (117), and the moisture permeation module (30) is arranged in the groove (117), and the cold air of the cold air supply path blows over the upper surface of the moisture permeation module (30).

3. The refrigeration appliance of claim 2, wherein, The cold air supply path comprises an air outlet hole (41), and the upper wall (11) is provided with a plurality of air deflectors which are arranged opposite to the air outlet hole (41) and guide the cold air to a plurality of directions covering the moisture permeation module (30).

4. The refrigeration appliance of claim 3, wherein, The plurality of air deflectors comprise a left air deflector (111), a right air deflector (113) and a plurality of intermediate air deflectors (112), the left air deflector (111) and one of the intermediate air deflectors (112) form a left air path (114), the right air deflector (113) and one of the intermediate air deflectors (112) form a right air path (115), and the air outlet amount of the left air path (114) and the right air path (115) is basically the same.

5. The refrigeration appliance of claim 4, wherein, The intermediate air deflectors (112) extend along the front-rear direction, the distance between the left air deflector (111) and the intermediate air deflectors (112) gradually increases along the air flow direction, and the distance between the right air deflector (113) and the intermediate air deflectors (112) gradually increases along the air flow direction.

6. The refrigeration appliance of claim 4, wherein, The refrigeration device further comprises a temperature sensor (118) arranged on the outside of the upper wall (11), and the left air deflector (111) or the right air deflector (113) separates the temperature sensor (118) from the cold air of the cold air supply path.

7. The refrigeration appliance of claim 5, wherein, The end of the left air deflector (111) and / or the right air deflector (113) away from the air outlet hole (41) is provided with an air outlet (116), the side wall (13) of the fresh-keeping chamber (10) is provided with an air deflector, the lower part of the fresh-keeping chamber (10) is provided with a return air cavity, the cold air blown out of the air outlet (116) blows to the return air outlet through the air deflector and the return air cavity in sequence.

8. The refrigeration appliance of claim 1, wherein, The refrigeration device further comprises a drawer (20) arranged in the fresh-keeping chamber (10), the fresh-keeping chamber (10) comprises a forward opening (102), the drawer (20) has an upward opening (201), and when the drawer (20) is located in the fresh-keeping chamber (10), the drawer (20) and the door frame (101) of the fresh-keeping chamber (10) are sealed and abutted by a first sealing ring.

9. The refrigeration appliance of claim 8, wherein, The fresh-keeping compartment (10) comprises a first air inlet (122) and a first air return port, the drawer (20) comprises a second air inlet (21) and a second air return port (22), the oxygen regulating module supplies air to the first air inlet (122) and returns to the oxygen regulating module in turn through the second air inlet (21), the second air return port (22) and the first air return port.

10. The refrigeration appliance of claim 9, wherein, The oxygen regulating module comprises an air outlet (51) and a third air return port (52), and the air outlet (51) and the third air return port (52) are both directed to the bottom wall (14) of the fresh-keeping compartment (10). The rear wall (12) of the fresh-keeping compartment (10) is provided with an oxygen regulating air path, the oxygen regulating air path comprises an air groove (121), a second sealing ring (124) and a back plate (123) arranged on the rear wall (12), the second sealing ring (124) is abutted between the back plate (123) and the rear wall (12), one end of the air groove (121) extends to the air outlet (51), and the other end extends to the first air inlet (122) in the middle of the rear wall (12).

11. The refrigeration appliance of claim 9, wherein, The first air return port is arranged on the bottom wall (14) of the fresh-keeping compartment (10), and the second air return port (22) is arranged on the side and the bottom of the drawer (20).

12. The refrigeration appliance of claim 8, wherein, The moisture permeable module (30) is arranged on the rear wall (12) of the drawer (20).

13. The refrigeration appliance of claim 1, wherein, The oxygen regulating module is used for regulating the oxygen concentration in the fresh-keeping compartment (10) to be higher than the oxygen concentration in the outside environment.

14. The refrigeration appliance of claim 1, wherein, The oxygen regulating module is used for regulating the oxygen concentration in the fresh-keeping compartment (10) to be lower than the oxygen concentration in the outside environment.

15. The refrigeration appliance of claim 1, wherein, The moisture permeable module (30) is arranged as a salt solution, a solid adsorbent, a water washing gel or an electrolytic dehumidification module.

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