Refrigeration device and control method therefor

Abstract

The present disclosure provides a refrigeration device and a control method thereof. The refrigeration device comprises: a compartment configured to refrigerate stored articles; and an air supply device comprising an air supply channel and a fan, wherein the air supply channel is provided with a first air inlet, a second air inlet and an air outlet; the first air inlet is configured to communicate with external environment where the refrigeration device is situated to obtain fresh air, the second air inlet communicates with a return air channel of the refrigeration device to obtain frozen return air, the air outlet communicates with an interior of the compartment, and the fan is arranged inside the air supply channel and configured to drive the fresh air and the frozen return air to form mixed gas as a humidification source to enter the compartment. The control method of a refrigeration device comprises: starting the fan so that the fresh air and the frozen return air form the mixed gas to enter the compartment if a humidity of the compartment is less than a preset humidity. The refrigeration device and the control method thereof in the present disclosure can improve the control effect.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure is based on and claims priority to China Patent Application No. 202410088568.7 filed on January 22, 2024 and China Patent Application No. 202311697175.8 filed on December 11, 2023, the disclosure of which is incorporated by reference herein in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the field of a refrigeration device, in particular to a refrigeration device and a control method thereof.BACKGROUND

[0003] With the improvement of people's material living standards, the requirements for the preservation function of the refrigerator are becoming higher and higher. The temperature and humidity of the fruit and vegetable compartment are important factors to determine the preservation time and quality of fruits and vegetables. At present, the temperature control technology is already very mature. For the humidity control and the preservation, the dominant refrigerators usually use the following methods at present: one is passive humidity control technology, which is a technology of controlling the humidity using a moisture-permeable film, present with the problem of low efficiency in humidity adjustment and the problems that it is possible to sacrifice some moisture of fruits and vegetables so as to lead to serious moisture loss of fruits and vegetables and that it is difficult to dissipate dewing on the surface of fruits and vegetables so as to lead to accelerated decay; one is ultrasonic humidification technology, in which the user is required to replenish water in time, and scattered water droplets are added into the compartment so that it is likely to form dewing on the surface of fruits and vegetables so as to lead to accelerated decay of fruits and vegetables; and also a volatile humidification technology, in which not only the user is required to replenish water in time, but also the humidification effect is so poor that it is very difficult to maintain high humidity for a long time.SUMMARY

[0004] It is an object of the present disclosure to provide a refrigeration device and a control method thereof, so as to improve the humidity control effect of the refrigeration device.

[0005] In a first aspect of the present disclosure, a refrigeration device is provided. The refrigeration device comprises: a compartment configured to refrigerate stored articles; and an air supply device comprising an air supply channel and a fan, wherein the air supply channel is provided with a first air inlet, a second air inlet and an air outlet; the first air inlet is configured to communicate with external environment where the refrigeration device is situated to obtain fresh air, the second air inlet communicates with a return air channel of the refrigeration device to obtain frozen return air, the air outlet communicates with an interior of the compartment, and the fan is arranged inside the air supply channel and configured to drive the fresh air and the frozen return air to form mixed gas as a humidification source to enter the compartment.

[0006] In some embodiments, the air supply channel has a first channel segment and a second channel segment, wherein the second channel segment is located downstream of the first channel segment along an airflow direction, and the first air inlet communicates with the second air inlet at an upstream end of the first channel segment along the airflow direction, and the fan is arranged inside the second channel segment.

[0007] In some embodiments, the air supply channel has a second channel segment and a third channel segment, wherein the third channel segment is located downstream of the second channel segment along an airflow direction, and the third channel segment is internally provided with a porous adsorptive member.

[0008] In some embodiments, the air supply channel is provided with a drain outlet, and the refrigeration device comprises a drain pipe correspondingly arranged below the third channel segment and configured to collect condensed water generated by the third channel segment.

[0009] In some embodiments, the air supply channel comprises a first channel segment, a second channel segment and a third channel segment which are sequentially arranged along an airflow direction, wherein the first air inlet communicates with the second air inlet at an upstream end of the first channel segment along the airflow direction, the fan is arranged inside the second channel segment, and the third channel segment is internally provided with a porous adsorptive member.

[0010] In some embodiments, the air supply device comprises a first heating member arranged in at least a portion of an outer periphery of the air supply channel and configured to heat the mixed gas in the air supply channel.

[0011] In some embodiments, the refrigeration device comprises a condensate drain pan and a second heating member, wherein the condensate drain pan is configured to collect condensed water generated by the refrigeration device, the position where the condensate drain pan is located is in fluid communication with a return air channel of the refrigeration device, and the second heating member is arranged at the condensate drain pan and configured to heat the condensed water in the condensate drain pan.

[0012] In some embodiments, the refrigeration device comprises a humidity control film arranged on the compartment and configured to cause water vapor to flow from one side with a higher humidity to one side with a lower humidity between the inside and outside of the compartment.

[0013] In some embodiments, the refrigeration device comprises a humidity detection device configured to detect a humidity of the compartment to control the fan to start or stop according to the humidity of the compartment.

[0014] In some embodiments, the refrigeration device comprises: a dehumidification air damper openably and closably arranged on the compartment; and a humidity detection device configured to detect a humidity of the compartment to control the dehumidification air damper to open or close according to the humidity of the compartment.

[0015] In some embodiments, the refrigeration device comprises: a refrigeration air damper openably and closably arranged on the compartment and configured to adjust a communication state between the compartment and the air inlet channel of the refrigeration device; and a temperature detection device configured to detect a temperature of the compartment to control the refrigeration air damper to open or close according to the temperature of the compartment.

[0016] In a second aspect of the present disclosure, a control method of a refrigeration device according to the first aspect of the present disclosure is provided. The control method comprises: starting the fan so that the fresh air and the frozen return air form the mixed gas to enter the compartment if a humidity of the compartment is less than a preset humidity.

[0017] In some embodiments, the control method further comprises: determining a rotation speed of the fan according to a difference between the humidity of the compartment and the preset humidity and a volume of mixed gas required to be replenished to make the humidity of the compartment reach the preset humidity.

[0018] In some embodiments, the control method comprises: increasing the rotation speed of the fan until the humidity variation rate V RH of the compartment reaches the target rate V RH target if the humidity variation rate V RH of the compartment is less than the target rate V RH target after the fan is started; and / or reducing the rotation speed of the fan until the humidity variation rate V RH of the compartment reaches the target rate V RH target if the humidity variation rate V RH of the compartment is greater than the target rate V RH target after the fan is started.

[0019] In some embodiments, the control method further comprises: starting a first heating member if the rotation speed of the fan has reached a maximum rotation speed, and the humidity variation rate V RH has not reached the target rate V RH target , wherein the first heating member is arranged in at least a portion of an outer periphery of the air supply channel to heat the mixed gas in the air supply channel.

[0020] In some embodiments, the control method further comprises: starting a second heating member if a heating power of the first heating member has reached a maximum heating power and the humidity variation rate V RH has not reached the target rate V RH target , wherein the second heating member is arranged on the condensate drain pan to heat the condensed water in the condensate drain pan.

[0021] In some embodiments, the control method further comprises: starting a second heating member if the rotation speed of the fan has reached a maximum rotation speed and the humidity variation rate V RH has not reached the target rate V RH target , wherein the second heating member is arranged on the condensate drain pan to heat the condensed water in the condensate drain pan.

[0022] In some embodiments, the control method further comprises: stopping the running of the fan and opening a refrigeration air damper arranged on the compartment if the temperature of the compartment is greater than a preset temperature after the fan is started, so that cold air outside the compartment flows into the compartment through the refrigeration air damper.

[0023] In some embodiments, if the humidity of the compartment is greater than a preset humidity, the dehumidification air damper arranged on the compartment is opened so that the gas in the compartment flows out of the compartment through the dehumidification air damper.

[0024] In the refrigeration device provided by the embodiment of the present disclosure, when the fan is started, fresh air and frozen return air enter the air supply channel through the first air inlet and the second air inlet respectively, and enter the air supply channel under a blast pressure formed by the fan. Under the disturbance of the fan, the fresh air and the frozen return air can be mixed in advance, so that the fresh air and the frozen return air may adequately perform heat exchange and water vapor exchange to form uniform mixed gas as a gas phase humidification source during the mixing process, so that it is possible to humidify the compartment evenly and efficiently.

[0025] Compared with the passive humidity control technology, in the humidification mode of the embodiment of the present disclosure, moisture for humidification is provided by the fresh air external to the refrigeration device, rather than by a transpiration effect of articles such as fruits and vegetables themselves, so that it is possible to reduce moisture loss of fruits and vegetables.

[0026] Compared with the ultrasonic humidification technology, in the humidification mode of the embodiment of the present disclosure, the humidification source is the mixed gas of fresh air and frozen return air, so that it is not likely to form dewing on the surface of the article.

[0027] Compared with the volatile humidification technology, in the humidification mode of the embodiment of the present disclosure, immediately when the fan is started, the air supply device may continuously and stably provide the mixed gas to the compartment, without considering the problem of water replenishment, and without additional operation by the user.

[0028] Therefore, the refrigeration device provided by the present disclosure may improve own humidity control effect.

[0029] The control method of a refrigeration device provided by the present disclosure has the advantages possessed by the aforementioned refrigeration device.

[0030] Other features and advantages of the present disclosure will become explicit from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings described here, which are intended to provide a further understanding of the present disclosure, constitute part of the present disclosure. The illustrative embodiments of the present disclosure as well as the descriptions thereof, which are intended to explain the present disclosure, do not constitute improper definitions on the present disclosure. In the accompanying drawings: Fig. 1 is a schematic structural view of a compartment of a refrigeration device according to some embodiments of the present disclosure. Fig. 2 is a schematic view of a sectional structure of an air supply device according to some embodiments of the present disclosure. Fig. 3 is a schematic view of an exploded structure of an air supply device according to some embodiments of the present disclosure. Fig. 4 is a flowchart of some embodiments of a control method of a refrigeration device according to some embodiments of the present disclosure. Fig. 5 is a flowchart of other embodiments of a control method of a refrigeration device according to some embodiments of the present disclosure.

[0032] In Figs. 1 to 5, each reference numeral respectively represents: 1. compartment; 10. humidity control tank; 21. humidity control film; 22. oxygen control film; 3. temperature and humidity sensor; 4. dehumidification air damper; 5. third heating member; 6. air supply device; 61. air supply channel; 61A. first channel segment; 61B. second channel segment; 61C. third channel segment; 611. ventilation cover; 612. first venting pipe; 613. second venting pipe; 614. adsorptive material box; 615. first air inlet; 616. second air inlet; 617. air outlet; 618. water sump; 619. drain outlet; 62. fan; 63. first heating member; 7. back plate; 8. drain pipe; 9. inner liner.DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present disclosure will be explicitly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Apparently, the embodiments described are merely some of the embodiments of the present disclosure, rather than all of the embodiments. The following descriptions of at least one exemplary embodiment which are in fact merely illustrative, shall by no means serve as any limitation on the present disclosure as well as its application or use. On the basis of the embodiments of the present disclosure, all the other embodiments obtained by those of ordinary skill in the art on the premise that no inventive effort is involved shall fall into the protection scope of the present disclosure.

[0034] The relative arrangements, numerical expressions and values of the components and steps elaborated in these embodiments shall not limit the scope of the present invention unless specified otherwise. At the same time, it should be understood that, for ease of description, the dimensions of various parts shown in the accompanying drawings are not drawn according to actual proportional relations. The techniques, methods, and devices known to those of ordinary skill in the relevant art might not be discussed in detail. However, these techniques, methods, and devices shall be considered as part of the specification where appropriate. Among all the examples shown and discussed here, any specific value shall be construed as merely exemplary, rather than as a limitation. Thus, other examples in the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters present similar items in the following accompanying drawings, and therefore, once a certain item is defined in one accompanying drawing, a further discussion thereof is not required in subsequent accompanying drawings.

[0035] In the description of the present disclosure, it is necessary to understand that, such wordings as "first" and "second" which are used to define the parts, are only intended to facilitate distinguishing corresponding parts. Unless specified otherwise, the above-described wordings do not have particular meanings, and thus cannot be understood as limiting the protection scope of the present disclosure.

[0036] In the description of the present disclosure, it is necessary to understand that, the azimuth or positional relations indicated by such azimuth terms as "front, rear, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom", which are usually based on the azimuth or positional relations illustrated by the accompanying drawings, are only intended for facilitating description of the present disclosure and simplifying the description. Unless specified otherwise, such azimuth terms do not indicate or imply that the device or element referred to has to present a particular azimuth or to be constructed and operated in a particular azimuth, so that it cannot be understood as limiting the protection scope of the present disclosure. The azimuth terms "inside, outside" mean the interior and exterior relative to the contour of each member itself.

[0037] Referring to Figs. 1 to 3, in some embodiments of the present disclosure, a refrigeration device including a compartment 1 and an air supply device 6 is provided. The compartment 1 is configured to refrigerate stored articles. The air supply device 6 includes an air supply channel 61 and a fan 62, wherein the air supply channel 61 is provided with a first air inlet 615, a second air inlet 616 and an air outlet 617; the first air inlet 615 is configured to communicate with external environment where the refrigeration device is situated to obtain fresh air, the second air inlet 616 communicates with a return air channel of the refrigeration device to obtain frozen return air, the air outlet 617 communicates with an interior of the compartment 61, and the fan 62 is arranged inside the air supply channel 61 and configured to drive the fresh air and the frozen return air to form mixed gas as a humidification source to enter the compartment 1.

[0038] The refrigeration device may be a refrigerator, a freezer or the like. The compartment 1 may be a fruit and vegetable compartment or other compartments with humidity control requirements. Alternatively, referring to Figs. 1 and 2, the air supply device 6 is arranged at the rear wall of the compartment 1, that is, the side wall of the compartment 1 on one side proximate to the back plate 7 of the refrigeration device, and the air supply device 6 is mounted between the back plate 7 and the compartment 1.

[0039] The principles that the above-described mixed gas may serve as a humidification source are as follows: since the environment in which the refrigeration device is situated is usually a comfortable environment for human body such as indoors, the temperature and humidity of fresh air are both higher than the temperature and humidity in the compartment 1, and water vapor in fresh air may serve as a moisture source for humidifying the compartment 1.

[0040] The inventors have found that, the mixing process of fresh air with both high temperature and humidity and frozen return air with both low temperature and humidity may be presented as a straight line on the enthalpy- humidity diagram, wherein a segment of straight line corresponding to a refrigeration temperature range of the compartment 1 is slightly higher above a saturated humidity curve, which indicates that in this temperature range, the mixed gas formed by a certain proportion of fresh air and frozen return air not only may humidify the compartment 1, but also has less influence on the temperature of the compartment 1.

[0041] Therefore, in order to allow the temperature of the compartment 1 to substantially remain at a temperature required for the refrigerated articles during the humidification process, the frozen return air with a low temperature in the refrigeration device may be mixed with fresh air, so as to incorporate the humidification and temperature control requirements.

[0042] The mixing process of fresh air and frozen return air satisfies the law of conservation of energy and the law of conservation of mass of water vapor; ρ external V external cp external T external + ρ frozen V frozen cp frozen T frozen = ρ total V total cp total T total ;

[0043] In the formula (1), ρ external represents the density of fresh air, V external represents the volume of fresh air, cp external represents the specific heat capacity of fresh air, T external represents the temperature of fresh air, ρ frozen represents the density of frozen return air, V frozen represents the volume of frozen return air, cp frozen represents the specific heat capacity of frozen return air, T frozen represents the temperature of frozen return air, ρ total represents the density of mixed gas, V total represents the volume of mixed gas, cp total represents the specific heat capacity of mixed gas, and T total represents the temperature of mixed gas.

[0044] In the formula (2), RH external represents the relative humidity of fresh air, P saturated external represents the saturated vapor pressure of fresh air, ρ external represents the density of fresh air, V external represents the volume of fresh air, RH frozen represents the relative humidity of frozen return air, P saturated frozen represents the saturated vapor pressure of frozen return air, ρ frozen represents the density of frozen return air, V frozen represents the volume of frozen return air, RH total represents the relative humidity of mixed gas, P saturated frozen represents the saturated vapor pressure of mixed gas, ρ total represents the density of mixed gas, V total represents the volume of mixed gas, and m condensed represents the mass of condensed water generated during the process of mixing fresh air and frozen return air.

[0045] Based on the above-described formulas (1) and (2), it is possible to determine the ratio of fresh air and frozen return air required for allowing the humidity of the compartment 1 to reach the preset humidity, and the apertures of the first air inlet 615 and the second air inlet 616 may be determined by theoretical calculation, estimation or experiments simulating routine operation environment of the refrigeration device, so as to better adjust a mixing ratio of fresh air and frozen return air.

[0046] Alternatively, referring to Fig. 2, the air supply channel 61 includes a ventilation cover 611 and a first venting pipe 612. The ventilation cover 611 is mounted on the back plate 7 of the refrigeration device. The ventilation cover 611 includes an end cover and a cylindrical portion, wherein the end cover is arranged at one axial end of the cylindrical portion, the outside diameter of the end cover is greater than that of the cylindrical portion and forms a first flange relative to the cylindrical portion, the first air inlet 615 is arranged on the end cover, and the first air inlet 615 is a through hole. The first venting pipe 612 includes a first pipe segment and a second pipe segment arranged along its own axial direction, wherein a second flange protruding towards the radial inner side of the first venting pipe 612 is provided between the first pipe segment and the second pipe segment, the cylindrical portion is in clearance fit with the first pipe segment, and one end of the cylindrical portion proximate to the second flange forms a gap with the second flange, wherein the gap is the second air inlet 616, and the second air inlet 616 communicates with a return air channel of the refrigeration device through a clearance between the cylindrical portion and the first pipe segment. By using the ventilation cover 611 and the first venting pipe 612 with different sizes, it is possible to adjust the mixing ratio of fresh air and frozen return air.

[0047] In the refrigeration device provided by the embodiment of the present disclosure, when the fan 62 is started, fresh air and frozen return air enter the air supply channel 61 through the first air inlet 615 and the second air inlet 616 respectively, and enter the air supply channel 61 under a blast pressure formed by the fan 62. Under the disturbance of the fan 62, the fresh air and the frozen return air can be mixed in advance, so that the fresh air and the frozen return air may adequately perform heat exchange and water vapor exchange to form uniform mixed gas as a gas phase humidification source during the mixing process, so that it is possible to humidify the compartment 1 evenly and efficiently.

[0048] Of course, in addition to the fan 62, an air pump may also be used, and the devices that may accelerate the air flow speed in the air supply channel 61 are all applicable to the embodiment of the present disclosure, and it is possible to make adjustment according to actual needs in practical application, and the embodiment of the present disclosure is not limited thereto.

[0049] Compared with the passive humidity control technology, in the humidification mode of the embodiment of the present disclosure, moisture for humidification is provided by the fresh air external to the refrigeration device, rather than by a transpiration effect of articles such as fruits and vegetables themselves, so that it is possible to reduce moisture loss of fruits and vegetables.

[0050] Compared with the ultrasonic humidification technology, in the humidification mode of the embodiment of the present disclosure, the humidification source is the mixed gas of fresh air and frozen return air, so that it is not likely to form dewing on the surface of the article.

[0051] Compared with the volatile humidification technology, in the humidification mode of the embodiment of the present disclosure, immediately when the fan 62 is started, the air supply device 6 may continuously and stably provide the mixed gas to the compartment 1, without considering the problem of water replenishment, and without additional operation by the user.

[0052] Therefore, the refrigeration device in the embodiment of the present disclosure may improve own humidity control effect.

[0053] In conjunction with Figs. 1 to 3, the structure of the refrigeration device according to some embodiments of the present disclosure will be further described below.

[0054] In some embodiments, referring to Fig. 2, the air supply channel 61 has a first channel segment 61A and a second channel segment 61B, wherein the second channel segment 61B is located downstream of the first channel segment 61A along an airflow direction, and the first air inlet 615 communicates with the second air inlet 616 at an upstream end of the first channel 61A segment along the airflow direction, and the fan 62 is arranged inside the second channel segment 61B.

[0055] In some embodiments, referring to Fig. 2, the cross section inside the second channel segment 61B is greater than that inside the first channel segment 61A, for the purpose of arranging the fan 62 inside the second channel segment 61B since it is necessary to be adapted to the size of the fan 62 so as to avoid air leakage. If these small-sized elements such as an air pump are used as a substitute for the fan 62, it is possible to reduce the cross-section inside the second channel segment 61B. Of course, the cross section inside the second channel segment 61B may also be the same as that inside the first channel segment 61A, and it is possible to make adjustment according to actual needs in practical application, and the embodiment of the present disclosure is not limited thereto.

[0056] In some embodiments, the second channel segment 61B is arranged in the inner liner 9 of the refrigerator, and the first channel segment 61A is arranged in a foam layer between the inner liner 9 of the refrigerator and the back plate 7 of the refrigerator.

[0057] For example, the foam layer is usually formed of foam materials such as polyurethane foam or polystyrene foam, with a favorable temperature holding performance and thermal insulation performance, so that it is possible to effectively prevent cold air from escaping and hot air from entering, so as to ensure the temperature stability inside the refrigerator. The foaming layer of the refrigerator is the key to ensure the thermal insulation performance of the refrigerator. If the foaming layer of the refrigerator is not thick enough or the material is not favorable, it is possible to cause that cold air escapes and hot air enters, so as to affect the refrigeration effect of the refrigerator. However, if the thickness of the foam layer of the refrigerator is proper and the material is excellent, it is possible to effectively maintain a stable temperature inside the refrigerator, so as to ensure the refrigeration effect of the refrigerator.

[0058] The first channel segment 61A may be embedded in the foam layer between the inner liner 9 and the back plate 7, the ventilation cover 611 is arranged on the back plate 7 of the refrigerator, and the second channel segment 61B is connected with the compartment 1. When the second channel segment 61B, the first channel segment 61A and the ventilation cover 611 are assembled, it is possible to form a ventilation channel which penetrates through the foam layer of the refrigerator and communicates the compartment 1 of the refrigerator with the ambient. By embedding the first channel segment 61A in the foam layer between the inner liner 9 and the back plate 7, it is not required to occupy the volume of the compartment 1, so that it is possible to retrieve the existing problem of wasted volume of the compartment caused by adding a water box in active humidity control and improve the volume utilization rate of the refrigerator.

[0059] Alternatively, in order to better maintain the humidity of the mixed gas in the air supply channel 61, the second channel segment 61B is provided with a water sump 618 configured to store the water required for maintaining the humidity of the mixed gas.

[0060] In the above-described embodiments, when fresh air and frozen return air enter the air supply channel 61 through the first air inlet 615 and the second air inlet 616 respectively, the fresh air and the frozen return air may be preliminarily mixed in the first channel segment 61A for preliminary heat exchange and water vapor exchange, and then disturbed by the fan 62 for further heat exchange and water vapor exchange, so that it is possible to further improve the uniformity of the temperature and humidity of the mixed gas.

[0061] In some embodiments, referring to Fig. 2, the air supply channel 61 has a second channel segment 61B and a third channel segment 61C, wherein the third channel segment 61C is located downstream of the second channel segment 61B along an airflow direction, and the third channel segment 61C is internally provided with a porous adsorptive member.

[0062] The porous adsorptive member may include a porous adsorptive material itself, for example, activated carbon or other adsorptive materials capable of adsorbing impurities in the mixed gas, and may also include a porous adsorptive material and a container filled with the porous adsorptive material, wherein the container is provided with a plurality of vent holes. Alternatively, referring to Figs. 2 and 3, the porous adsorptive member includes an adsorptive material box 614, and the end face of the adsorptive material box 614 proximate to the compartment 1 and the end face remote from the compartment 1 are both provided with vent holes that are evenly distributed.

[0063] In the above-described embodiments, when the mixed gas flows into the third channel segment 61C under the action of the fan 62, the porous adsorptive member arranged inside the third channel segment 61C not only functions to perform sterilization and odor purification, but also reduces the flow rate of the mixed gas, so that fresh air and the frozen return air may be more adequately mixed, which allows more adequate heat exchange and water vapor exchange therebetween and more uniform temperature, humidity and air speed of the mixed gas entering the compartment 1, so as to improve the temperature and humidity control effect.

[0064] In some embodiments, the air supply channel 61 is provided with a drain outlet 619, and the refrigeration device includes a drain pipe 8 correspondingly arranged below the third channel segment 61C and configured to collect condensed water generated by the third channel segment 61C.

[0065] Alternatively, referring to Fig. 2, the porous adsorptive member includes an adsorptive material box 614, wherein the lower part of the adsorptive material box 614 has an opening communicating with the drain outlet 619.

[0066] Since the temperature gradually drops when the mixed gas passes through the porous adsorptive member and it is likely to form dewing, by providing the drain outlet 619 and the drain pipe 8, it is possible to drain the condensed water in time and reduce the risk of the condensed water entering the compartment 1, thereby reducing the decay risk of fruits and vegetables inside the compartment 1.

[0067] In some embodiments, the air supply channel 61 includes a first channel segment 61A, a second channel segment 61B and a third channel segment 61C which are sequentially arranged along an airflow direction, wherein the first air inlet 615 communicates with the second air inlet 616 at an upstream end of the first channel segment 61A along the airflow direction, the fan 62 is arranged inside the second channel segment 61B , and the third channel segment 61C is internally provided with a porous adsorptive member.

[0068] In the above-described embodiments, the fresh air and the frozen return air are first preliminarily mixed in the first channel segment 61A, and then further mixed in the second channel segment 61B. Finally, under the action of the third channel segment 61C, not only the fresh air and the frozen return air are more adequately mixed, but also impurities in the mixed gas can also be adsorbed. When the mixed gas flows through the first channel segment 61A, the second channel segment 61B and the third channel segment 61C sequentially, it is realized that not only the fresh air and the frozen return air may be adequately mixed, but also the temperature of the mixed gas is close to the refrigeration temperature of the compartment 1 when the mixed gas enters through the air outlet 617, and there is substantially only a gas diffusion process after the mixed gas enters the compartment 1, so that it is possible to have less influence on the temperature of the compartment 1 while maintaining the humidification effect.

[0069] The air supply channel 61 mentioned above includes a plurality of channel segments, which may be integrally arranged or assembled by a plurality of members that are separately arranged. Alternatively, referring to Figs. 2 and 3, the air supply channel 61 includes a ventilation cover 611, a first venting pipe 612, a second venting pipe 613 and an adsorptive material box 614. Alternatively, referring to Fig. 2, part of the first venting pipe 612 that is in clearance fit with the ventilation cover 611 forms a fitting section, a downstream portion of the fitting section in the first venting pipe 612 along an airflow direction forms a first channel segment 61A, a position in the second venting pipe 613 corresponding to the fan 62 forms a second channel segment 61B, and the adsorptive material box 614 itself forms a third channel segment 61C.

[0070] In some embodiments, the air supply device 6 includes a first heating member 63 arranged in at least a portion of an outer periphery of the air supply channel 61 and configured to heat the mixed gas in the air supply channel 61.

[0071] Alternatively, referring to Figs. 2 and 3, the first heating member 63 is an aluminum foil heater which covers an outer periphery of the second venting pipe 613.

[0072] The air volume of the mixed gas is related to the rotation speed of the fan 62. In the above-described embodiments, if the rotation speed of the fan 62 has reached a maximum rotation speed, the humidification rate of the compartment 1 still cannot achieve the requirements. The first heating member 63 may be started so that the moisture in the air supply channel 61 is turned into water vapor as a supplementary humidification source, so as to further improve the humidification rate of the compartment 1.

[0073] In some embodiments, the refrigeration device includes a condensate drain pan and a second heating member, wherein the condensate drain pan is configured to collect condensed water generated by the refrigeration device, the position where the condensate drain pan is located is in fluid communication with a return air channel of the refrigeration device, and the second heating member is arranged at the condensate drain pan and configured to heat the condensed water in the condensate drain pan.

[0074] The second heating member may be an electric heating member such as an electric heating wire.

[0075] The electric heating wire is heated by using metal conductive materials. For example, the heating wire may be made of nickel-chromium alloy or copper-nickel alloy. These materials which have excellent electrical and physical properties, may be rapidly heated at a low voltage without reactions such as color variation. The material of the electric heating wire may be selected according to actual conditions in practical application, and the embodiment of the present disclosure is not limited thereto.

[0076] The condensate drain pan is usually arranged in the interlayer formed by the back plate 7 and the inner liner 9 of the refrigeration device, and the second air inlet 616 is in fluid communication with the interlayer formed by the back plate 7 and the inner liner 9, so that the frozen return air of the refrigeration device may flow in the interlayer, and the water vapor formed by the condensed water in the condensate drain pan may enter the air supply channel 61 along with the frozen return air.

[0077] In the above-described embodiments, if the rotation speed of the fan 62 has reached a maximum rotation speed or the power of the first heating member 63 has reached a maximum power, the humidification rate of the compartment 1 still cannot achieve the requirements, the second heating member may be provided so that the condensed water in the condensate drain pan is turned into water vapor which may enter the air supply channel 61 through the return air channel and the second air inlet 616 as a supplementary humidification source, so as to further improve the humidification rate of the compartment 1.

[0078] It is to be noted that, the humidity control mode of the refrigeration device in the embodiment of the present disclosure is not completely exclusive to a conventional humidity control mode. Referring to Fig. 2, in the case where the air supply device 6 is provided, a humidity control tank 10 and a corresponding third heating member 5 may still be provided in the compartment 1, wherein the third heating member 5 is arranged on the tank wall of the humidity control tank 10.

[0079] In some embodiments, the refrigeration device includes a humidity detection device configured to detect a humidity of the compartment 1 to control the fan 62 to start or stop according to the humidity of the compartment 1.

[0080] In the above-described embodiments, the refrigeration device may control the fan 62 to start or stop according to a detection result of the humidity detection device, so that the humidification process may be started or stopped according to the humidity of the compartment 1 and the variation condition of the humidity.

[0081] In some embodiments, referring to Fig. 1, the refrigeration device includes a dehumidification air damper 4 and a humidity detection device. The dehumidification air damper 4 is openably and closably arranged on the compartment 1, and the humidity detection device is configured to detect a humidity of the compartment 1, so as to control the opening or closing of the dehumidification air damper 4 according to the humidity of the compartment 1.

[0082] In the above-described embodiments, the refrigeration device may not only humidify the compartment 1 through the air supply device 6, but also open the dehumidification air damper 4 when the humidity of the compartment 1 is too high, so that the gas with a high humidity in the compartment 1 flows out of the compartment 1, so as to reduce the humidity of the compartment 1.

[0083] In some embodiments, referring to Fig. 1, the refrigeration device includes a humidity control film 21 arranged on the compartment 1 and configured to cause water vapor to flow from one side with a higher humidity to one side with a lower humidity between the inside and outside of the compartment 1.

[0084] The direction and speed of water vapor penetrating through the humidity control film 21 are determined by a humidity difference between the inside and outside of the compartment 1, and the greater the humidity difference is, the greater the speed of water vapor flowing from one side with a higher humidity to one side with a lower humidity between the inside and outside of the compartment 1. In the above-described embodiments, the humidity control film 21 may control the humidity of the compartment 1 in linkage with other members such as the fan 62, the first heating member 63, the second heating member and the dehumidification air damper 4.

[0085] Alternatively, in order to allow that the oxygen content of the compartment 1 is also within a reasonable range, the refrigeration device further comprises an oxygen control film 22 arranged on the compartment 1 and configured to cause oxygen to flow from one side with a higher concentration to one side with a lower concentration between the inside and outside of the compartment 1.

[0086] In some embodiments, the refrigeration device includes a refrigeration air damper and a temperature detection device. The refrigeration air damper is openably and closably arranged on the compartment 1 and configured to adjust a communication state between the compartment 1 and the air inlet channel of the refrigeration device. The temperature detection device is configured to detect a temperature of the compartment 1 to control the refrigeration air damper to open or close according to the temperature of the compartment 1.

[0087] When the mixed gas enters the compartment 1 through the air outlet 617, the temperature of the mixed gas is usually still slightly higher than that of the compartment 1. In the above-described embodiments, if the temperature of the compartment 1 is too high due to the humidification process of the mixed gas, the cold air with a low temperature may enter the compartment 1 by opening the refrigeration air damper, so as to reduce the temperature of the compartment 1.

[0088] In order to measure the humidity and temperature of the compartment 1, referring to Fig. 1, the refrigeration device includes a temperature and humidity sensor 3 arranged in the compartment 1, wherein the temperature and humidity sensor 3 is both a humidity detection device and a temperature detection device.

[0089] Referring to Figs. 4 and 5, in some embodiments of the present disclosure a control method of the aforementioned refrigeration device is also provided. The control method comprises: starting the fan 62 so that the fresh air and the frozen return air form the mixed gas to enter the compartment 1 if a humidity of the compartment 1 is less than a preset humidity.

[0090] In Fig. 4, RH represents the humidity of the compartment 1, RH preset represents the preset humidity, T represents the temperature of the compartment 1, and T preset max represents the upper limit of the preset temperature range.

[0091] Wherein, RH preset may be a specific value or a value range, and the specific value or value range of RH preset may be set according to actual requirements in practical application, and the embodiment of the present disclosure is not limited thereto. For example, when RH preset is a value range, the preset value range may be 30% to 50%. If the internal humidity of the compartment 1 is less than 30%, it is determined that the internal humidity of the compartment 1 is lower than the RH preset , and if the internal humidity of the compartment 1 is greater than 50%, it is determined that the internal humidity of the compartment 1 is higher than the RH preset .

[0092] The control method of a refrigeration device provided by the embodiment of the present disclosure has the advantages possessed by the aforementioned refrigeration device.

[0093] In some embodiments, referring to Fig. 4, the control method further comprises: determining a rotation speed of the fan 62 according to a difference between the humidity of the compartment 1 and the preset humidity and a volume of mixed gas required to be replenished to make the humidity of the compartment 1 reach the preset humidity.

[0094] The air volume of the mixed gas required for humidification may be calculated by the following water content formula: m = ρ V − 10 3 m / d ;

[0095] Where m represents the water content in the gas, with the unit of g, ρ represents the density of the gas, with the unit of g / m 3< , V represents the air volume of the gas, with the unit of m 3< , and d represents the moisture content of the gas, with the unit of g / m 3< .

[0096] For the mixed gas as a humidification source, the water content m 2 , the density ρ 2 , the air volume V 2 and the moisture content d 2 of the mixed gas satisfy that: m 2 = ρ 2 V 2 − 10 3 m 2 / d 2 ;

[0097] For the compartment 1 in a steady state after reaching the preset humidity, the water content m 3 of the gas in a steady state, the density ρ 3 of the gas in a steady state, the volume V 1 of the compartment 1 and the moisture content d 3 of the gas in a steady state satisfy that: m 3 = ρ 3 V 1 − 10 3 m 3 / d 3 ;

[0098] Since the mixed gas is introduced into the compartment 1, the original gas in the compartment 1 is partially expelled out of the compartment 1, and the water content m1 of a remaining part of the original gas in the compartment 1, the volume V 1 of the compartment 1, the air volume V 2 of the mixed gas and the water content d 1 of the original gas in the compartment 1 satisfy that: m 1 = ρ 1 V 1 − V 2 − 10 3 m 1 / d 1 ;

[0099] According to the law of conservation of mass of water vapor, m 3 = m 1 +m 2 ; (6)

[0100] By equations (3), (4), (5) and (6), V2 may be accurately solved, so as to further obtain an appropriate rotation speed of the fan 62.

[0101] In some embodiments, referring to Fig. 4, the control method comprises: increasing the rotation speed of the fan 62 until the humidity variation rate V RH of the compartment 1 reaches the target rate V RHtarget if the humidity variation rate V RH of the compartment 1 is less than the target rate V RHtarget after the fan is started.

[0102] In some embodiments, the control method comprises: reducing the rotation speed of the fan 62 until the humidity variation rate V RH of the compartment 1 reaches the target rate V RHtarget if the humidity variation rate V RH of the compartment 1 is greater than the target rate V RHtarget after the fan 62 is started.

[0103] The control method in the above-described embodiments may maintain the rotation speed of the fan 62 at the rotation speed required to reach the target speed V RH , so that it is possible to not only retrieve the problems that the compartment 1 has a large temperature fluctuation and a high temperature and the humidification and temperature control requirements are difficult to balance caused by too fast rotation speed of the fan 62, but also solve the problem of that the compartment 1 has a low humidification efficiency caused by too slow rotation speed of the fan 62.

[0104] In some embodiments, the control method further comprises: starting a first heating member 63 if the rotation speed of the fan 62 has reached a maximum rotation speed, and the humidity variation rate V RH has not reached the target rate V RHtarget , wherein the first heating member 63 is arranged in at least a portion of an outer periphery of the air supply channel 61 to heat the mixed gas in the air supply channel 61.

[0105] The humidity variation rate V RH may be used to judge whether the humidification rate of the compartment 1 achieves the requirements. In the above-described embodiments, if the rotation speed of the fan 62 has reached a maximum rotation speed, the humidification rate of the compartment 1 still cannot achieve the requirements, the first heating member 63 may be started so that the moisture in the air supply channel 61 is turned into water vapor as a supplementary humidification source, so as to further improve the humidification rate of the compartment 1.

[0106] In some embodiments, the control method further comprises: starting a second heating member if a heating power of the first heating member 63 has reached a maximum heating power and the humidity variation rate V RH has not reached the target rate V RHtarget , wherein the second heating member is arranged on the condensate drain pan to heat the condensed water in the condensate drain pan.

[0107] In the above-described embodiments, if the rotation speed of the fan 62 has reached a maximum rotation speed or the power of the first heating member 63 has reached a maximum power, the humidification rate of the compartment 1 still cannot achieve the requirements, the second heating member may be provided so that the condensed water in the condensate drain pan is turned into water vapor which may enter the air supply channel 61 through the return air channel and the second air inlet 616 as a supplementary humidification source, so as to further improve the humidification rate of the compartment 1.

[0108] In some embodiments, referring to Fig. 5, the control method further comprises: starting a second heating member if the rotation speed 62 of the fan has reached a maximum rotation speed and the humidity variation rate V RH has not reached the target rate V RHtarget , wherein the second heating member is arranged on the condensate drain pan to heat the condensed water in the condensate drain pan.

[0109] In the above-described embodiments, if the rotation speed of the fan 62 has reached a maximum rotation speed, the humidification rate of the compartment 1 still cannot achieve the requirements, the second heating member may be provided so that the condensed water in the condensate drain pan is turned into water vapor which may enter the air supply channel 61 through the return air channel and the second air inlet 616 as a supplementary humidification source, so as to further improve the humidification rate of the compartment 1.

[0110] As a supplementary humidification mode, the first heating member 63 and the second heating member may be started simultaneously or started separately. In different embodiments, considering the stability of the energy consumption and the humidity variation rate, when the second heating member is started, the first heating member may stop or remain in a started state, and when the first heating member 63 is started, the second heating member may stop or remain in a started state. Furthermore, the powers of the first heating member 63 and the second heating member may vary with the change of the humidity variation rate V RH of the compartment 1.

[0111] The conditions for starting the first heating member 63 may be as follows: 1. the rotation speed of the fan 62 has reached a maximum rotation speed, but the humidification rate of the compartment 1 still cannot achieve the requirements; 2. the rotation speed of the fan 62 has reached a maximum rotation speed, and the power of the second heating member has reached a maximum power, and the humidification rate of the compartment 1 still cannot achieve the requirements. The conditions for starting the second heating member may be as follows: 1. the rotation speed of the fan 62 has reached a maximum rotation speed, and the humidification rate of the compartment 1 still cannot achieve the requirements; 2. the rotation speed of the fan 62 has reached a maximum rotation speed, and the power of the first heating member 63 has reached a maximum power, and the humidification rate of the compartment 1 still cannot achieve the requirements.

[0112] In some embodiments, the control method further comprises: stopping the running of the fan 62 and opening a refrigeration air damper arranged on the compartment 1 if the temperature of the compartment 1 is greater than a preset temperature after the fan 62 is started, so that cold air outside the compartment 1 flows into the compartment 1 through the refrigeration air damper.

[0113] Alternatively, the preset temperature may be set as the upper limit of the refrigeration temperature range of the compartment 1. In the above-described embodiments, if the temperature of the compartment 1 is too high due to the humidification process of the mixed gas, the cold air with a low temperature may enter the compartment 1 by opening the refrigeration air damper, so as to reduce the temperature of the compartment 1.

[0114] In some embodiments, the control method further comprises: opening the dehumidification air damper 4 arranged on the compartment 1 so that the gas in the compartment 1 flows out of the compartment 1 through the dehumidification air damper 4 if the humidity of the compartment 1 is greater than a preset humidity.

[0115] In the above-described embodiments, referring to Fig. 5, the refrigeration device may not only humidify the compartment 1 through the air supply device 6, but also open the dehumidification air damper 4 when the humidity of the compartment 1 is too high, so that the gas with a high humidity in the compartment 1 flows out of the compartment 1, so as to reduce the humidity of the compartment 1.

[0116] In the above-described embodiments, the dehumidification process of the refrigeration device may be realized based on the linkage effect of the dehumidification air damper 4 and the humidity control film 21, that is, when the humidity of the compartment 1 is greater than the preset humidity, the fan 62 stops running. Considering that the humidity of the compartment 1 is usually higher than the humidity of an ambient environment where the compartment 1 is situated, the humidity in the compartment 1 may not only flow out of the compartment 1 through the dehumidification air damper 4, but also flow out of the compartment 1 through the humidity control film 21, so as to further improve the dehumidification rate.

[0117] It is to be noted that, according to actual conditions, the preset temperature and the preset humidity mentioned above may take a value point or a value range. For example, when it is judged whether the fan 62 is started, the preset humidity may take a value range, and the judging condition for starting the fan 62 may be that the humidity of the compartment 1 is less than a lower limit value of the value range; and when a rotation speed of the fan 62 is determined, the preset humidity may take a value point for the convenience of calculation.

[0118] The humidity control flow of one embodiment of the refrigeration device of the present disclosure will be introduced below.

[0119] The compartment 1 may be configured to store fruits and vegetables, and may preserve stored ingredients such as fruits and vegetables. The user may adjust the internal humidity of the compartment 1 independently according to the types of fruits and vegetables stored in the compartment 1 to prolong a preservation period of the ingredients. For example, the user may adjust and set the internal humidity of the compartment 1 through the physical adjustment button, or may adjust and set the internal humidity of the compartment 1 through the touch panel, and the mode for the user to adjust and set the internal humidity of the compartment 1 may be set according to actual needs in practical application, and the embodiment of the present disclosure is not limited thereto.

[0120] The temperature and humidity sensor 3 is connected with the compartment 1. The temperature and humidity sensor 3 may detect the internal humidity of the compartment 1, and detect whether the internal humidity of the compartment 1 reaches the preset value. The electronic control main board may perform corresponding operations according to a detection result so that the internal humidity of the compartment 1 reaches the preset value.

[0121] When the temperature and humidity sensor 3 detects that the internal humidity of the compartment 1 is lower than the preset value, the electric control main board controls the fan 62 to start, and by starting the fan 62, it is possible to accelerate the air flow speed in the air supply channel 61, and introduce ambient air into the compartment 1 more rapidly, so as to increase the internal humidity of the compartment 1.

[0122] When the running time of the fan 62 after starting reaches the preset running time, the temperature and humidity sensor 3 detects the internal humidity of the compartment 1 again. If the internal humidity of the compartment 1 reaches the preset value, the electronic control main board controls the fan 62 to stop running, so that the internal humidity of the compartment 1 may remain at the preset value after reaching the preset value, wherein the preset running time may be set according to actual needs in practical application, and the embodiment of the present disclosure is not limited thereto. For example, the preset running time may be 30 seconds. When the running time of the fan 62 reaches the preset running time, the temperature and humidity sensor 3 detects the internal humidity of the compartment 1 again. If the internal humidity of the compartment 1 is still lower than the preset value, the fan 62 continues to run, and at the same time, the first heating member 63 is started to heat the mixed gas in the air supply channel 61, and the second heating member is started to heat the condensed water in the condensate drain pan. The condensed water may evaporate when heated, and the internal humidity of the compartment 1 may be increased in a short time. The condensed water is heated to assist the fan 62 in humidification when the fan 62 is running, so that the internal humidity of the compartment 1 reaches the preset value. When the temperature and humidity sensor 3 detects that the internal humidity of the compartment 1 reaches the preset value, the electric control main board controls the fan 62 to stop running and turn off the first heating member 63 and the second heating member, so that the internal humidity of the compartment 1 remains at the preset value after reaching the preset value.

[0123] The dehumidification air damper 4 is connected with the compartment 1, and the dehumidification air damper 4 may adjust the internal humidity of the compartment 1 based on the opening and closing state of the air damper. When the temperature and humidity sensor 3 detects that the internal humidity of the compartment 1 is higher than the preset value, the fan 62 is not started, and the electronic control main board may control the dehumidification air damper 4 connected with the compartment 1 to open, so that the wet air in the compartment 1 may be expelled out of the compartment 1 by way of air convection, so as to prevent aggravated decay of food such as fruits and vegetables caused by the condensed water formed when the internal humidity of the compartment 1 is too high. The wet air in the compartment 1 is expelled out of the compartment 1 through the air damper by way of air convection, so that it is possible to reduce the internal humidity of the compartment 1. After the opening time of the air damper reaches the preset opening time, the temperature and humidity sensor 3 detects the internal humidity of the compartment 1 again. When the temperature and humidity sensor 3 detects that the internal humidity of the compartment 1 reaches the preset value, the electronic control main board controls the dehumidification air damper 4 connected with the compartment 1 to close. In this way, it is possible to prevent that the internal wet air of the compartment 1 is expelled out of the compartment 1 through the air damper by way of air convection, so that the internal humidity of the compartment 1 may remain at the preset value after reaching the preset value. Wherein, the preset opening time may be set according to actual needs in practical application, and the embodiment of the present disclosure is not limited thereto. The dehumidification air damper 4 may be replaced by a combination of a cover plate and a gear motor, and the specific embodied form of the dehumidification air damper 4 may be set according to actual requirements in practical application, and the embodiment of the present disclosure is not limited thereto.

[0124] For example, when there are many fruits and vegetables stored in the compartment 1, the water vapor generated by a transpiration effect of plant-type fresh ingredients such as fruits and vegetables is also plentiful correspondingly, and the internal humidity of the compartment 1 may be relatively high. Moreover, it is extremely likely to have condensed water under the condition of low temperature in the refrigerator. A large amount of accumulated condensed water easily breeds microorganisms such as bacteria and molds, and the fruits and vegetables might also be soaked and decayed, which is not conducive to the preservation of fruits and vegetables. At this time, the dehumidification air damper 4 is opened so that redundant water vapor is expelled so as to ensure that the compartment 1 is always at an appropriate humidity.

[0125] In some embodiments, the control method described above may be implemented based on a controller and a corresponding readable and writable storage medium, and the controller may be implemented as a general purpose processor, a programmable logic controller (referred to as PLC for short), a digital signal processor (referred to as DSP for short), an application specific integrated circuit (referred to as ASIC for short), a field-programmable gate array (referred to as FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware assemblies or any proper combination thereof.

[0126] Finally, it should be noted that: the above embodiments are only intended to explain the technical solution of the present disclosure rather than limiting the same. Although detailed explanations are made to the present disclosure with reference to preferred embodiments, those of ordinary skill in the art should be appreciated that: it is still possible to make amendments to the embodiments of the present disclosure or equivalent replacements to some of the technical features, all of which shall be encompassed in the scope of the technical solution for which protection is sought in the present disclosure.

Claims

1. A refrigeration device, comprising: a compartment (1) configured to refrigerate stored articles; and an air supply device (6) comprising an air supply channel (61) and a fan (62), wherein the air supply channel (61) is provided with a first air inlet (615), a second air inlet (616) and an air outlet (617); the first air inlet (615) is configured to communicate with external environment where the refrigeration device is situated to obtain fresh air, the second air inlet (616) communicates with a return air channel of the refrigeration device to obtain frozen return air, the air outlet (617) communicates with an interior of the compartment (1), and the fan (62) is arranged inside the air supply channel (61) and configured to drive the fresh air and the frozen return air to form mixed gas as a humidification source to enter the compartment (1).

2. The refrigeration device according to claim 1, wherein the air supply channel (61) has a first channel segment (61A) and a second channel segment (61B), wherein the second channel segment (61B) is located downstream of the first channel segment (61A) along an airflow direction, and the first air inlet (615) communicates with the second air inlet (616) at an upstream end of the first channel segment (61A) along the airflow direction, and the fan (62) is arranged inside the second channel segment (61B).

3. The refrigeration device according to claim 1 or 2, wherein the air supply channel (61) has a second channel segment (61B) and a third channel segment (61C), wherein the third channel segment (61C) is located downstream of the second channel segment (61B) along an airflow direction, and the third channel segment (61C) is internally provided with a porous adsorptive member.

4. The refrigeration device according to claim 3, wherein the air supply channel (61) is provided with a drain outlet (619), and the refrigeration device comprises a drain pipe (8) correspondingly arranged below the third channel segment (61C) and configured to collect condensed water generated by the third channel segment (61C).

5. The refrigeration device according to any of claims 1 to 4, wherein the air supply channel (61) comprises a first channel segment (61A), a second channel segment (61B) and a third channel segment (61C) which are sequentially arranged along an airflow direction, wherein the first air inlet (615) communicates with the second air inlet (616) at an upstream end of the first channel segment (61A) along the airflow direction, the fan (62) is arranged inside the second channel segment (61B), and the third channel segment (61C) is internally provided with a porous adsorptive member.

6. The refrigeration device according to any of claims 1 to 5, wherein the air supply device (6) comprises a first heating member (63) arranged in at least a portion of an outer periphery of the air supply channel (61) and configured to heat the mixed gas in the air supply channel (61).

7. The refrigeration device according to any of claims 1 to 6, wherein the refrigeration device comprises a condensate drain pan and a second heating member, wherein the condensate drain pan is configured to collect condensed water generated by the refrigeration device, the position where the condensate drain pan is located is in fluid communication with the return air channel of the refrigeration device, and the second heating member is arranged at the condensate drain pan and configured to heat the condensed water in the condensate drain pan.

8. The refrigeration device according to any of claims 1 to 7, wherein the refrigeration device comprises a humidity control film (21) arranged on the compartment (1) and configured to cause water vapor to flow from one side with a higher humidity to one side with a lower humidity between the inside and outside of the compartment (1).

9. The refrigeration device according to any of claims 1 to 8, wherein the refrigeration device comprises a humidity detection device configured to detect a humidity of the compartment (1) to control the fan (62) to start or stop according to the humidity of the compartment (1).

10. The refrigeration device according to any of claims 1 to 9, comprising: a dehumidification air damper (4) openably and closably arranged on the compartment (1); and a humidity detection device configured to detect a humidity of the compartment (1) to control the dehumidification air damper (4) to open or close according to the humidity of the compartment (1).

11. The refrigeration device according to any of claims 1 to 10, comprising: a refrigeration air damper openably and closably arranged on the compartment (1) and configured to adjust a communication state between the compartment (1) and the air inlet channel of the refrigeration device; and a temperature detection device configured to detect a temperature of the compartment (1) to control the refrigeration air damper to open or close according to the temperature of the compartment (1).

12. A control method of a refrigeration device according to any of claims 1 to 11, comprising: starting the fan (62) so that the fresh air and the frozen return air form the mixed gas to enter the compartment (1) if a humidity of the compartment (1) is less than a preset humidity.

13. The control method of a refrigeration device according to claim 12, further comprising: determining a rotation speed of the fan (62) according to a difference between the humidity of the compartment (1) and the preset humidity and a volume of mixed gas required to be replenished to make the humidity of the compartment (1) reach the preset humidity.

14. The control method of a refrigeration device according to claim 12 or 13, comprising: increasing the rotation speed of the fan (62) until the humidity variation rate VRH of the compartment (1) reaches the target rate VRH target if the humidity variation rate VRH of the compartment (1) is less than the target rate VRH target after the fan (62) is started; and / or reducing the rotation speed of the fan (62) until the humidity variation rate VRH of the compartment (1) reaches the target rate VRH target if the humidity variation rate VRH of the compartment (1) is greater than the target rate VRH target after the fan (62) is started.

15. The control method of a refrigeration device according to claim 14, further comprising: starting a first heating member (63) if the rotation speed of the fan (62) has reached a maximum rotation speed, and the humidity variation rate VRH has not reached the target rate VRH target, wherein the first heating member (63) is arranged in at least a portion of an outer periphery of the air supply channel (61) to heat the mixed gas in the air supply channel (61).

16. The control method of a refrigeration device according to claim 15, further comprising: starting a second heating member if a heating power of the first heating member (63) has reached a maximum heating power and the humidity variation rate VRH has not reached the target rate VRH target, wherein the second heating member is arranged on the condensate drain pan to heat the condensed water in the condensate drain pan.

17. The control method of a refrigeration device according to any of claims 14 to 16, further comprising: starting a second heating member if the rotation speed of the fan (62) has reached a maximum rotation speed and the humidity variation rate VRH has not reached the target rate VRH target, wherein the second heating member is arranged on the condensate drain pan to heat the condensed water in the condensate drain pan.

18. The control method of a refrigeration device according to any of claims 12 to 17, further comprising: stopping the running of the fan (62) and opening a refrigeration air damper arranged on the compartment (1) if the temperature of the compartment (1) is greater than a preset temperature after the fan (62) is started, so that cold air outside the compartment (1) flows into the compartment (1) through the refrigeration air damper.

19. The control method of a refrigeration device according to any of claims 12 to 18, wherein if the humidity of the compartment (1) is greater than a preset humidity, a dehumidification air damper (4) arranged on the compartment (1) is opened so that the gas in the compartment (1) flows out of the compartment (1) through the dehumidification air damper (4).

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