Refrigeration device and control method therefor

Abstract

A refrigeration device and a control method therefor. The refrigeration device comprises a compartment (1) and an air supply apparatus (6). The compartment (1) is configured to refrigerate stored items. The air supply apparatus (6) comprises 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) being configured to be in communication with an external environment where the refrigeration device is located, so as to acquire fresh air, the second air inlet (616) being in communication with an air return channel of the refrigeration device to acquire frozen return air, and the air outlet (617) being in communication with the interior of the compartment (1); and the fan (62) is arranged inside the air supply channel (61) and is configured to drive the fresh air and the frozen return air to form mixed air serving as a humidification source, the mixed air entering the compartment (1). The control method for the refrigeration device comprises: if the humidity of a compartment (1) is less than a preset humidity, starting a fan, so that fresh air and frozen return air form mixed air, and the mixed air enters the compartment (1).

Description

Refrigeration equipment and control method thereof

[0001] This disclosure is based on and claims priority to the application with Chinese application number 202410088568.7 and application date January 22, 2024, and the application with Chinese application number 202311697175.8 and application date December 11, 2023. The disclosed contents of the Chinese applications are hereby introduced into this disclosure as a whole. Technical Field

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

[0003] As people's living standards improve, the demand for refrigerators' freshness-preserving functions becomes increasingly stringent. The temperature and humidity in the fruit and vegetable compartment are crucial factors in determining the shelf life and quality of fruits and vegetables. While temperature control technology is now highly mature, mainstream refrigerators typically employ the following methods for humidity control and preservation: passive humidity control, which utilizes a permeable membrane, suffers from inefficient humidity regulation. In low-humidity environments, this sacrifices some moisture from fruits and vegetables, leading to significant dry-out. In high-humidity environments, condensation on the surface of fruits and vegetables is difficult to dissipate, accelerating decay. Ultrasonic humidification requires users to replenish water promptly, and the water added to the compartment is small, dispersed droplets that easily form condensation on the surface of fruits and vegetables, accelerating decay. Volatile humidification, however, requires users to replenish water promptly and is ineffective, making it difficult to maintain high humidity levels over long periods.

[0004] Summary of the Invention

[0005] The present disclosure aims to provide a refrigeration device and a control method thereof, so as to improve the humidity control effect of the refrigeration device.

[0006] A first aspect of the present disclosure provides a refrigeration device, comprising:

[0007] Compartments configured for refrigerated storage of items; and

[0008] The air supply device includes an air supply channel and a fan, the air supply channel having a first air inlet, a second air inlet and an air outlet, the first air inlet is used to communicate with the external environment of the refrigeration equipment to obtain fresh air, the second air inlet is communicated with the return air channel of the refrigeration equipment to obtain refrigerated return air, the air outlet is communicated with the interior of the compartment, the fan is arranged inside the air supply channel, and is configured to drive the fresh air and the refrigerated return air to form a mixed gas as a humidification source into the compartment.

[0009] In some embodiments, the air supply channel has a first channel section and a second channel section, the second channel section is located downstream of the first channel section along the airflow direction, the first air inlet and the second air inlet are connected at the upstream end of the first channel section along the airflow direction, and the fan is arranged in the second channel section.

[0010] In some embodiments, the air supply channel has a second channel section and a third channel section, the third channel section is located downstream of the second channel section along the airflow direction, and a porous adsorption component is provided in the third channel section.

[0011] In some embodiments, the air supply channel is provided with a drain port, and the refrigeration device includes a drain pipe, which is correspondingly provided below the third channel section and is configured to collect condensed water generated by the third channel section.

[0012] In some embodiments, the air supply channel includes a first channel section, a second channel section, and a third channel section arranged in sequence along the airflow direction, the first air inlet and the second air inlet are connected at the upstream end of the first channel section along the airflow direction, the fan is arranged in the second channel section, and a porous adsorption component is provided in the third channel section.

[0013] In some embodiments, the air supply device includes a first heating component, which is disposed at at least a portion of the periphery of the air supply channel and is configured to heat the mixed gas in the air supply channel.

[0014] In some embodiments, the refrigeration equipment includes a water receiving tray and a second heating component, the water receiving tray is configured to collect condensed water generated by the refrigeration equipment, the position of the water receiving tray is fluidly connected to the return air channel of the refrigeration equipment, and the second heating component is arranged on the water receiving tray and is configured to heat the condensed water in the water receiving tray.

[0015] In some embodiments, the refrigeration device includes a humidity control membrane disposed on the compartment and configured to allow water vapor to flow from the side with higher humidity to the side with lower humidity between the inner side and the outer side of the compartment.

[0016] In some embodiments, the refrigeration equipment includes a humidity detection device, which is configured to detect the humidity of the compartment to control the fan to start or stop according to the humidity of the compartment.

[0017] In some embodiments, the refrigeration device comprises:

[0018] a dehumidification damper, the dehumidification damper being openably and closably disposed on the compartment; and

[0019] A humidity detection device is configured to detect the humidity of the compartment to control the dehumidification damper to open or close according to the humidity of the compartment.

[0020] In some embodiments, the refrigeration device comprises:

[0021] a refrigeration damper, the refrigeration damper being openably and closably disposed on the compartment and configured to adjust a communication state between the compartment and an air inlet passage of the refrigeration equipment; and

[0022] The temperature detection device is configured to detect the temperature of the compartment to control the opening or closing of the refrigeration damper according to the temperature of the compartment.

[0023] A second aspect of the present disclosure provides a method for controlling the refrigeration equipment according to the first aspect of the present disclosure, comprising:

[0024] If the humidity of the compartment is lower than a preset humidity, the fan is started to allow the fresh air and the refrigerated return air to form the mixed gas and enter the compartment.

[0025] In some embodiments, the control method further comprises: determining the rotation speed of the fan according to the difference between the humidity of the compartment and a preset humidity and the volume of the mixed gas required to be supplemented so that the humidity of the compartment reaches the preset humidity.

[0026] In some embodiments, the control method includes:

[0027] After the fan is started, if the humidity change rate v of the compartment RH Less than the target rate v RH目标 , increase the speed of the fan until the humidity change rate of the compartment reaches v RH To achieve the target rate v RH目标 and / or

[0028] After the fan is started, if the humidity change rate v of the compartment RH Greater than the target rate v RH目标 , reduce the speed of the fan until the humidity change rate v of the compartment RH To achieve the target rate v RH目标 .

[0029] In some embodiments, the control method further includes:

[0030] If the fan speed has reached the maximum speed and the humidity change rate v RH The target rate v has not yet been reached RH目标 , starting a first heating component, wherein the first heating component is arranged at at least a portion of the periphery of the air supply channel to heat the mixed gas in the air supply channel.

[0031] In some embodiments, the control method further includes: if the heating power of the first heating component has reached the maximum heating power, and the humidity change rate v RH The target rate v has not yet been reached RH目标 , starting the second heating component, wherein the second heating component is arranged on the water receiving tray to heat the condensed water in the water receiving tray.

[0032] In some embodiments, the control method further includes: if the speed of the fan has reached the maximum speed, and the humidity change rate v RH The target rate v has not yet been reached RH目标 , starting the second heating component, wherein the second heating component is arranged on the water receiving tray to heat the condensed water in the water receiving tray.

[0033] In some embodiments, the control method further includes: after the fan is started, if the temperature of the compartment is greater than a preset temperature, the fan is stopped and a refrigeration damper provided on the compartment is opened to allow cold air outside the compartment to flow into the compartment through the refrigeration damper.

[0034] In some embodiments, if the humidity of the compartment is greater than a preset humidity, a dehumidification damper provided on the compartment is opened to allow the gas in the compartment to flow out of the compartment through the dehumidification damper.

[0035] In the refrigeration equipment provided by the embodiments of the present disclosure, when the fan is started, the fresh air and the refrigerated 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 the wind pressure formed by the fan. Under the disturbance of the fan, the fresh air and the refrigerated return air can be mixed in advance. During the mixing process, the fresh air and the refrigerated return air can fully exchange heat and water vapor to form a uniform mixed gas as a gas phase humidification source, which can humidify the compartment evenly and efficiently.

[0036] Compared with passive humidity control technology, in the humidification method of the embodiment of the present disclosure, the water used for humidification is provided by the fresh air outside the refrigeration equipment, and does not need to be provided by the transpiration of fruits and vegetables themselves, which can reduce the dryness loss of fruits and vegetables.

[0037] Compared with ultrasonic humidification technology, in the humidification method of the embodiment of the present disclosure, the humidification source is a mixed gas of fresh air and refrigerated return air, which is not easy to form condensation on the surface of objects.

[0038] Compared with the volatile humidification technology, in the humidification method of the embodiment of the present disclosure, when the fan is started, the air supply device can continuously and stably provide mixed gas to the room, without considering the problem of water replenishment, and the user does not need to perform additional operations.

[0039] Therefore, the refrigeration equipment provided by the present disclosure can improve its own humidity control effect.

[0040] The control method of the refrigeration equipment provided by the present disclosure has the advantages of the aforementioned refrigeration equipment.

[0041] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0043] FIG1 is a schematic structural diagram of a compartment of a refrigeration device according to some embodiments of the present disclosure.

[0044] FIG2 is a schematic cross-sectional view of an air supply device according to some embodiments of the present disclosure.

[0045] FIG3 is a schematic diagram of the exploded structure of the air supply device according to some embodiments of the present disclosure.

[0046] FIG4 is a flow chart of some embodiments of the refrigeration equipment control method according to some embodiments of the present disclosure.

[0047] FIG5 is a flowchart illustrating other embodiments of the refrigeration equipment control method according to some embodiments of the present disclosure.

[0048] In Figures 1 to 5, the reference numerals represent respectively: 1. compartment; 10. humidity control tank; 21. humidity control membrane; 22. oxygen control membrane; 3. temperature and humidity sensor; 4. dehumidification damper; 5. third heating component; 6. air supply device; 61. air supply channel; 61A. first channel section; 61B. second channel section; 61C. third channel section; 611. ventilation cover; 612. first ventilation tube; 613. second ventilation tube; 614. adsorption material box; 615. first air inlet; 616. second air inlet; 617. air outlet; 618. water collection tank; 619. drain outlet; 62. fan; 63. first heating component; 7. back plate; 8. drain pipe; 9. liner. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0050] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, these techniques, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, rather than as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0051] In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0052] In the description of the present disclosure, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0053] With reference to Figures 1 to 3, some embodiments of the present disclosure provide a refrigeration device, comprising a compartment 1 and an air supply device 6. The compartment 1 is configured to refrigerate stored items. The air supply device 6 comprises an air supply channel 61 and a fan 62. The air supply channel 61 has a first air inlet 615, a second air inlet 616 and an air outlet 617. The first air inlet 615 is used to communicate with the external environment of the refrigeration device to obtain fresh air, the second air inlet 616 is connected to the return air channel of the refrigeration device to obtain refrigerated return air, and the air outlet 617 is connected to the interior of the compartment 1. The fan 62 is arranged inside the air supply channel 61 and is configured to drive the fresh air and the refrigerated return air to form a mixed gas as a humidification source into the compartment 1.

[0054] The refrigeration equipment can be a refrigerator, freezer, etc. The compartment 1 can be a fruit and vegetable compartment or other compartment with humidity control requirements. Optionally, referring to Figures 1 and 2, the air supply device 6 is provided on the rear wall of the compartment 1, that is, the side wall of the compartment 1 on the side close to the back panel 7 of the refrigeration equipment, and the air supply device 6 is installed between the back panel 7 and the compartment 1.

[0055] The principle that the above-mentioned mixed gas can be used as a humidification source is as follows: the environment in which the refrigeration equipment is located is usually an indoor environment where the human body feels more comfortable, so the temperature and humidity of the fresh air are higher than the temperature and humidity in compartment 1, and the water vapor in the fresh air can be used as a moisture source for humidifying compartment 1.

[0056] The inventors found that on the psychrometric diagram, the mixing process of fresh air with higher temperature and humidity and refrigerated return air with lower temperature and humidity can be represented as a straight line, in which a straight line corresponding to the refrigerated temperature range of compartment 1 is slightly higher than the saturation humidity curve, indicating that within this temperature range, fresh air and refrigerated return air form a mixed gas in a certain proportion, which can not only humidify compartment 1, but also have little effect on the temperature of compartment 1.

[0057] Therefore, in order to keep the temperature of compartment 1 basically at the temperature required for refrigerated items during the humidification process, the lower-temperature refrigerated return air in the refrigeration equipment can be mixed with the fresh air, thereby taking into account the needs of humidification and temperature control.

[0058] The mixing process of fresh air and refrigerated return air satisfies the law of conservation of energy and the law of conservation of mass of water vapor: ρ 外 V 外 cp 外 T 外 +ρ 冷冻 V 冷冻 cp 冷冻 T 冷冻 =ρ 总 V 总 cp 总 T 总 ; (1) RH 外 P饱外 ρ 外 V 外 +RH 冷冻 P 饱冷冻 ρ 冷冻 V 冷冻 =RH 总 P 饱总 ρ 总 V 总 +m 冷凝 ; (2)

[0059] In formula (1), ρ 外 Indicates the density of fresh air, V 外 Indicates the volume of fresh air, cp 外 Indicates the specific heat capacity of fresh air, T 外 represents the temperature of fresh air, ρ 冷冻 Indicates the density of refrigeration return air, V 冷冻 Indicates the volume of refrigerated return air, cp 冷冻 Indicates the specific heat capacity of the refrigerated return air, T 冷冻 represents the temperature of the refrigerated return air, ρ 总 Indicates the density of the mixed gas, V 总 Indicates the volume of the mixed gas, cp 总 represents the specific heat capacity of the mixed gas, T 总 Indicates the temperature of the mixed gas.

[0060] In formula (2), RH 外 Indicates the relative humidity of fresh air, P 饱外 Indicates the saturated vapor pressure of fresh air, ρ 外 Indicates the density of fresh air, V 外 Indicates the volume of fresh air, RH 冷冻 Indicates the relative humidity of the refrigerated return air, P 饱冷冻 Indicates the saturated vapor pressure of the refrigerated return air, ρ 冷冻 Indicates the density of refrigeration return air, V 冷冻 Indicates the volume of refrigerated return air, RH 总 Indicates the relative humidity of the mixed gas, P 饱总 Indicates the saturated vapor pressure of the mixed gas, ρ 总 Indicates the density of the mixed gas, V 总 Indicates the volume of the mixed gas, m 冷凝 Indicates the quality of condensed water produced when fresh air is mixed with refrigerated return air.

[0061] Based on the above formulas (1) and (2), the ratio of fresh air to refrigerated return air required to make the humidity of compartment 1 reach the preset humidity can be determined. The diameters of the first air inlet 615 and the second air inlet 616 can be determined by theoretical calculation, estimation, or experiments simulating the daily use environment of the refrigeration equipment to better adjust the mixing ratio of fresh air and refrigerated return air.

[0062] Optionally, referring to FIG2 , the air supply channel 61 includes a ventilation cover 611 and a first ventilation tube 612. The ventilation cover 611 is mounted on the back panel 7 of the refrigeration unit. The ventilation cover 611 includes an end cover and a cylindrical portion. The end cover is disposed at one axial end of the cylindrical portion. The outer diameter of the end cover is larger than the outer diameter of the cylindrical portion and forms a first flange relative to the cylindrical portion. A first air inlet 615 is disposed on the end cover. The first air inlet 615 is a through hole. The first ventilation tube 612 includes a first barrel section and a second barrel section disposed along its own axial direction. A second flange protrudes radially inwardly toward the first ventilation tube 612 between the first barrel section and the second barrel section. The cylindrical portion is loosely fitted with the first barrel section, and an end of the cylindrical portion close to the second flange forms a gap with the second flange. This gap is the second air inlet 616. The second air inlet 616 is connected to the return air channel of the refrigeration unit through the gap between the cylindrical portion and the first barrel section. By using ventilation covers 611 and first ventilation tubes 612 of different sizes, the mixing ratio of fresh air and refrigerated return air can be adjusted.

[0063] In the refrigeration equipment provided by the embodiment of the present disclosure, when the fan 62 is started, the fresh air and the refrigerated return air enter the air supply duct 61 through the first air inlet 615 and the second air inlet 616 respectively, and enter the air supply duct 61 under the wind pressure formed by the fan 62. Under the disturbance of the fan 62, the fresh air and the refrigerated return air can be mixed in advance. During the mixing process, the fresh air and the refrigerated return air can fully exchange heat and water vapor to form a uniform mixed gas as a gas phase humidification source, which can uniformly and efficiently humidify the compartment 1.

[0064] Of course, in addition to using the fan 62, an air pump can also be used. Any device that can increase the air flow speed in the air supply channel 61 is suitable for the embodiment of the present disclosure. In actual application, it can be adjusted according to actual needs, and the embodiment of the present disclosure does not limit this.

[0065] Compared with passive humidity control technology, in the humidification method of the embodiment of the present disclosure, the water used for humidification is provided by the fresh air outside the refrigeration equipment, and does not need to be provided by the transpiration of fruits and vegetables themselves, which can reduce the dryness loss of fruits and vegetables.

[0066] Compared with ultrasonic humidification technology, in the humidification method of the embodiment of the present disclosure, the humidification source is a mixed gas of fresh air and refrigerated return air, which is not easy to form condensation on the surface of objects.

[0067] Compared with the volatile humidification technology, in the humidification method of the embodiment of the present disclosure, when the fan 62 is started, the air supply device 6 can continuously and stably provide the mixed gas into the compartment 1, without considering the problem of water replenishment, and the user does not need to perform additional operations.

[0068] Therefore, the refrigeration equipment of the embodiment of the present disclosure can improve its own humidity control effect.

[0069] The structure of the refrigeration equipment of some embodiments of the present disclosure will be further described below with reference to FIG. 1 to FIG. 3 .

[0070] In some embodiments, referring to Figure 2, the air supply channel 61 has a first channel section 61A and a second channel section 61B, the second channel section 61B is located downstream of the first channel section 61A along the airflow direction, the first air inlet 615 and the second air inlet 616 are connected at the upstream end of the first channel section 61A along the airflow direction, and the fan 62 is arranged in the second channel section 61B.

[0071] In some embodiments, referring to FIG2 , the cross-section of the interior of the second channel section 61B is larger than the cross-section of the interior of the first channel section 61A. This is to accommodate the fan 62 within the second channel section 61B, and the size of the fan 62 needs to be adapted to prevent air leakage. If a small component such as an air pump is used in place of the fan 62, the cross-section of the interior of the second channel section 61B can be reduced. Of course, the cross-section of the interior of the second channel section 61B can also be the same as the cross-section of the interior of the first channel section 61A. In actual applications, this can be adjusted according to actual needs, and the present disclosed embodiments are not limited to this.

[0072] In some embodiments, the second channel section 61B is disposed in the inner liner 9 of the refrigerator, and the first channel section 61A is disposed in the foam layer between the inner liner 9 of the refrigerator and the back panel 7 of the refrigerator.

[0073] For example, the foam layer is typically made of a foam material such as polyurethane foam or polystyrene foam. These materials have excellent thermal insulation and heat-insulating properties, effectively preventing cold air from escaping and hot air from entering, thereby maintaining a stable temperature inside the refrigerator. A refrigerator's foam layer is key to ensuring its thermal insulation performance. If the foam layer is not thick enough or made of poor quality materials, cold air can escape and hot air can enter, affecting the refrigerator's cooling performance. However, if the foam layer is of the appropriate thickness and quality, it can effectively maintain a stable temperature inside the refrigerator, ensuring its cooling performance.

[0074] First channel section 61A can be pre-embedded in the foam layer between the inner liner 9 and the back panel 7. A vent cover 611 is provided on the refrigerator's back panel 7. Second channel section 61B is connected to compartment 1. The assembly of second channel section 61B, first channel section 61A, and vent cover 611 forms a ventilation duct that penetrates the refrigerator's foam layer and connects compartment 1 to the outside world. By pre-embedding first channel section 61A in the foam layer between the inner liner 9 and the back panel 7, the volume of compartment 1 is no longer occupied. This improves the volume utilization of the refrigerator by eliminating the waste of compartment volume caused by the addition of a water box in existing active humidity control systems.

[0075] Optionally, in order to better maintain the humidity of the mixed gas in the air supply channel 61, a water collecting tank 618 is provided on the second channel section 61B, and the water collecting tank 618 is configured to store water required to keep the mixed gas moisturized.

[0076] In the above embodiment, when the fresh air and the refrigerated 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 refrigerated return air can be preliminarily mixed in the first channel section 61A, and preliminarily undergo heat exchange and water vapor exchange, and then further undergo heat exchange and water vapor exchange under the disturbance of the fan 62, thereby further improving the uniformity of the temperature and humidity of the mixed gas.

[0077] In some embodiments, referring to FIG2 , the air supply channel 61 has a second channel section 61B and a third channel section 61C. The third channel section 61C is located downstream of the second channel section 61B along the airflow direction. A porous adsorption component is provided in the third channel section 61C.

[0078] The porous adsorption component may include a porous adsorption material itself, such as activated carbon or other adsorption materials capable of adsorbing impurities in the mixed gas, or may include a porous adsorption material and a container filled with the porous adsorption material, the container being provided with a plurality of vents. Optionally, referring to Figures 2 and 3, the porous adsorption component includes an adsorption material box 614, and the end surface of the adsorption material box 614 close to the compartment 1 and the end surface away from the compartment 1 are both provided with evenly arranged vents.

[0079] In the above embodiment, when the mixed gas flows into the third channel section 61C under the action of the fan 62, the porous adsorption component provided in the third channel section 61C not only plays the role of sterilization and deodorization, but also reduces the flow rate of the mixed gas, and the fresh air and the refrigerated return air can be more fully mixed, so that the heat exchange and water vapor exchange between the two are more sufficient, and the temperature, humidity and wind speed of the mixed gas entering the compartment 1 are more uniform, thereby improving the temperature and humidity control effects.

[0080] In some embodiments, the air supply channel 61 is provided with a drain port 619 , and the refrigeration device includes a drain pipe 8 , which is correspondingly provided below the third channel section 61C and configured to collect condensed water generated by the third channel section 61C.

[0081] Optionally, referring to FIG. 2 , the porous adsorption component includes an adsorption material box 614 , and the lower portion of the adsorption material box 614 has an opening communicating with a drain port 619 .

[0082] Since the temperature of the mixed gas gradually drops when passing through the porous adsorption component, condensation is easily formed. By providing the drain port 619 and the drain pipe 8, the condensed water can be discharged in time, reducing the risk of condensed water entering the compartment 1, thereby reducing the risk of fruits and vegetables and other items in the compartment 1 rotting.

[0083] In some embodiments, the air supply channel 61 includes a first channel section 61A, a second channel section 61B and a third channel section 61C arranged in sequence along the airflow direction, the first air inlet 615 and the second air inlet 616 are connected at the upstream end of the first channel section 61A along the airflow direction, the fan 62 is arranged in the second channel section 61B, and a porous adsorption component is provided in the third channel section 61C.

[0084] In the above embodiment, the fresh air and the refrigerated return air are first preliminarily mixed in the first channel section 61A, and then further mixed in the second channel section 61B. Finally, under the action of the third channel section 61C, the fresh air and the refrigerated return air are not only more fully mixed, but also the impurities in the mixed gas can be adsorbed. When the mixed gas flows through the first channel section 61A, the second channel section 61B and the third channel section 61C in sequence, not only can the fresh air and the refrigerated return air be fully mixed, but also when the mixed gas enters through the air outlet 617, the temperature of the mixed gas is close to the refrigeration temperature of the compartment 1. After the mixed gas enters the compartment 1, there is basically only a process of gas diffusion. Therefore, on the basis of maintaining the humidification effect, the temperature of the compartment 1 is less affected.

[0085] The air supply channel 61 mentioned above includes multiple channel sections, which can be integrally arranged or assembled from multiple separately arranged components. Optionally, referring to Figures 2 and 3, the air supply channel 61 includes a vent cover 611, a first ventilator 612, a second ventilator 613, and an adsorption material box 614. Optionally, referring to Figure 2, the portion of the first ventilator 612 that fits with the vent cover 611 in a clearance manner forms a mating section, the downstream portion of the mating section in the first ventilator 612 along the airflow direction forms a first channel section 61A, the position in the second ventilator 613 corresponding to the fan 62 forms a second channel section 61B, and the adsorption material box 614 itself forms a third channel section 61C.

[0086] In some embodiments, the air supply device 6 includes a first heating component 63 , which is disposed at at least a portion of the periphery of the air supply channel 61 and configured to heat the mixed gas in the air supply channel 61 .

[0087] Optionally, referring to FIG. 2 and FIG. 3 , the first heating component 63 is an aluminum foil heater, and the aluminum foil heater is wrapped around the outer circumference of the second ventilating tube 613 .

[0088] The air volume of the mixed gas is related to the speed of the fan 62. In the above embodiment, if the speed of the fan 62 has reached the maximum speed, the humidification rate of the compartment 1 still does not meet the requirements. The first heating component 63 can be activated to convert the moisture in the air supply channel 61 into water vapor as a supplementary humidification source to further improve the humidification rate of the compartment 1.

[0089] In some embodiments, the refrigeration equipment includes a water receiving tray and a second heating component. The water receiving tray is configured to collect condensed water generated by the refrigeration equipment. The position of the water receiving tray is fluidically connected to the return air channel of the refrigeration equipment. The second heating component is arranged on the water receiving tray and is configured to heat the condensed water in the water receiving tray.

[0090] The second heating component can be an electric heating component such as a heating wire.

[0091] The electric heating wire uses metal conductive materials for heating. For example, the heating wire can be made of nickel-chromium alloy or copper-nickel alloy. These materials have excellent electrical and physical properties, can be heated quickly at a lower voltage, and will not cause color changes or other reactions at high temperatures. The material of the electric heating wire can be selected according to actual conditions in actual applications, and the embodiments of the present disclosure do not limit this.

[0092] The water collecting pan is usually arranged in the interlayer formed by the back plate 7 and the inner liner 9 of the refrigeration equipment. The second air inlet 616 is connected to the interlayer fluid formed by the back plate 7 and the inner liner 9. The refrigerated return air of the refrigeration equipment can flow in the interlayer, and the water vapor formed by the condensed water in the water collecting pan can enter the air supply channel 61 with the refrigerated return air.

[0093] In the above embodiment, if the speed of the fan 62 has reached the maximum speed, or the power of the first heating component 63 has reached the maximum power, the humidification rate of the compartment 1 still does not meet the requirements. By providing a second heating component, the condensed water in the water receiving tray can be converted into water vapor, and the water vapor can enter the air supply channel 61 through the return air channel and the second air inlet 616 to serve as a supplementary humidification source, thereby further improving the humidification rate of the compartment 1.

[0094] It should be noted that the humidity control method of the refrigeration equipment in the embodiment of the present disclosure is not completely exclusive of the conventional humidity control method. Referring to Figure 2, on the basis of setting the air supply device 6, a humidity control tank 10 and a corresponding third heating component 5 can still be set in the compartment 1, wherein the third heating component 5 is set on the tank wall of the humidity control tank 10.

[0095] In some embodiments, the refrigeration device includes a humidity detection device, which is configured to detect the humidity of the compartment 1 to control the fan 62 to start or stop according to the humidity of the compartment 1.

[0096] In the above embodiment, the refrigeration device can control the start or stop of the fan 62 according to the detection result of the humidity detection device, thereby starting or stopping the humidification process according to the humidity of the compartment 1 and the change of the humidity.

[0097] In some embodiments, referring to FIG1 , the refrigeration device includes a dehumidification damper 4 and a humidity detection device. The dehumidification damper 4 and the humidity detection device are disposed on the compartment 1 in an openable and closable manner. The humidity detection device is configured to detect the humidity of the compartment 1 and control the opening or closing of the dehumidification damper 4 based on the humidity of the compartment 1.

[0098] In the above embodiment, the refrigeration equipment can not only humidify the compartment 1 through the air supply device 6, but also, when the humidity in the compartment 1 is too high, open the dehumidification damper 4 to allow the gas with higher humidity in the compartment 1 to flow out of the compartment 1, thereby reducing the humidity in the compartment 1.

[0099] In some embodiments, referring to FIG1 , the refrigeration device includes a humidity control membrane 21 , which is disposed on the compartment 1 and configured to allow water vapor to flow from the side with higher humidity to the side with lower humidity between the inner and outer sides of the compartment 1 .

[0100] The direction and rate of water vapor passing through the humidity control membrane 21 are determined by the humidity difference between the inside and outside of the compartment 1, and the greater the humidity difference, the greater the rate at which water vapor flows from the side with higher humidity to the side with lower humidity between the inside and outside of the compartment 1. In the above embodiment, the humidity control membrane 21 can be linked with other components such as the fan 62, the first heating component 63, the second heating component and the dehumidification damper 4 to control the humidity of the compartment 1.

[0101] Optionally, in order to keep the oxygen content in the compartment 1 within a reasonable range, the refrigeration device further includes an oxygen control membrane 22, which is provided on the compartment 1 and configured to allow oxygen to flow from the side with a higher concentration between the inner and outer sides of the compartment 1 to the side with a lower concentration.

[0102] In some embodiments, the refrigeration device includes a refrigeration damper and a temperature detection device. The refrigeration damper is openably and closably disposed on the compartment 1 and is configured to regulate the communication between the compartment 1 and the air inlet passage of the refrigeration device. The temperature detection device is configured to detect the temperature of the compartment 1 and control the opening or closing of the refrigeration damper according to the temperature of the compartment 1.

[0103] 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 the temperature of the compartment 1. In the above embodiment, if the humidification process of the mixed gas causes the temperature of the compartment 1 to be too high, the refrigeration damper can be opened to allow cool air with a lower temperature to enter the compartment 1, thereby lowering the temperature of the compartment 1.

[0104] In order to measure the humidity and temperature of the compartment 1, referring to FIG1, the refrigeration device includes a temperature and humidity sensor 3 provided in the compartment 1. The temperature and humidity sensor 3 is both a humidity detection device and a temperature detection device.

[0105] 4 and 5 , some embodiments of the present disclosure further provide a control method for the aforementioned refrigeration equipment, comprising: if the humidity of compartment 1 is lower than a preset humidity, starting the fan 62 so that fresh air and refrigerated return air form a mixed gas and enter the compartment 1 .

[0106] In Figure 4, RH represents the humidity of compartment 1, RH 预设 Indicates the preset humidity, T indicates the temperature of compartment 1, T 预设max Indicates the upper limit of the preset temperature range.

[0107] Among them, RH 预设 It can be a specific value or a range of values, RH 预设 The specific value or value range of can be set according to actual needs in actual applications, and the embodiment of the present disclosure does not limit this. For example, when RH 预设 When the value range is 30%-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 RH 预设 If the internal humidity of compartment 1 is greater than 50%, it is determined that the internal humidity of compartment 1 is higher than RH 预设 .

[0108] The control method of the refrigeration equipment provided by the embodiment of the present disclosure has the advantages of the aforementioned refrigeration equipment.

[0109] In some embodiments, referring to FIG4 , the control method further includes: determining the rotation speed of the fan 62 according to the difference between the humidity of the compartment 1 and the preset humidity and the volume of the mixed gas required to supplement the humidity of the compartment 1 to reach the preset humidity.

[0110] The air volume of the mixed gas required for humidification can be calculated using the following water content formula: m = ρV-10 3 m / d; (3)

[0111] Where m represents the water content in the gas, in g, and ρ represents the density of the gas, in g / m 3 , V represents the gas volume, the unit is m 3 , d represents the moisture content of the gas, the unit is g / m 3 .

[0112] For the mixed gas used as a humidification source, the water content m2, density ρ2, air volume V2 and humidity d2 of the mixed gas satisfy: m2=ρ2V2-10 3 m2 / d2; (4)

[0113] For the compartment 1 in steady state after reaching the preset humidity, the water content m3 of the gas in the compartment 1 in steady state, the density ρ3 of the gas in the compartment 1 in steady state, the volume V1 of the compartment 1 and the moisture content d3 of the gas in the compartment 1 in steady state meet the following requirements: m3=ρ3V1-10 3 m3 / d3; (4)

[0114] Since the mixed gas is introduced into the compartment 1, the original gas in the compartment 1 is partially discharged outside the compartment 1, and the water content m1 of the remaining part of the original gas in the compartment 1, the volume V1 of the compartment 1, the air volume V2 of the mixed gas, and the water content d1 of the original gas in the compartment 1 satisfy: m1=ρ1(V1-V2)-10 3 m1 / d1; (5)

[0115] According to the law of conservation of mass of water vapor, m3=m1+m2; (6)

[0116] By using equations (3), (4), (5) and (6), V2 can be accurately solved, thereby further obtaining the appropriate speed of the fan 62.

[0117] In some embodiments, referring to FIG4, the control method includes: after the fan 62 is started, if the humidity change rate v of the compartment 1 RH Less than the target rate v RH目标 , increase the speed of fan 62 until the humidity change rate v in compartment 1 RH Reach target rate v RH目标 .

[0118] In some embodiments, the control method includes: after the fan 62 is started, if the humidity change rate v of the compartment 1 RH Greater than the target rate v RH目标 , reduce the speed of fan 62 until the humidity change rate v in compartment 1RH Reach target rate v RH目标 .

[0119] The control method of the above embodiment can keep the speed of the fan 62 at the target speed v RH The required speed can not only improve the problem of large temperature fluctuation and high temperature in the compartment 1 caused by the fan 62 rotating too fast, and the problem of difficult balance between humidification and temperature control requirements, but also improve the problem of low humidification efficiency in the compartment 1 caused by the fan 62 rotating too slowly.

[0120] In some embodiments, the control method further includes: if the speed of the fan 62 has reached the maximum speed, and the humidity change rate v RH The target rate v has not yet been reached RH目标 , so that the first heating component 63 is started, wherein the first heating component 63 is arranged at least a portion of the outer periphery of the air supply channel 61 to heat the mixed gas in the air supply channel 61.

[0121] Humidity change rate v RH It can be used to determine whether the humidification rate of the compartment 1 meets the requirements. In the above embodiment, if the speed of the fan 62 has reached the maximum speed and the humidification rate of the compartment 1 still does not meet the requirements, the first heating component 63 can be started to convert the moisture in the air supply channel 61 into water vapor as a supplementary humidification source to further improve the humidification rate of the compartment 1.

[0122] In some embodiments, the control method further includes: if the heating power of the first heating component 63 has reached the maximum heating power, and the humidity change rate v RH The target rate v has not yet been reached RH目标 , so that the second heating component is started, wherein the second heating component is arranged on the water receiving tray to heat the condensed water in the water receiving tray.

[0123] In the above embodiment, if the speed of the fan 62 has reached the maximum speed, or the power of the first heating component 63 has reached the maximum power, the humidification rate of the compartment 1 still does not meet the requirements. By providing a second heating component, the condensed water in the water receiving tray can be converted into water vapor, and the water vapor can enter the air supply channel 61 through the return air channel and the second air inlet 616 to serve as a supplementary humidification source, thereby further improving the humidification rate of the compartment 1.

[0124] In some embodiments, referring to FIG5 , the control method further includes: if the speed of the fan 62 has reached the maximum speed, and the humidity change rate v RH The target rate v has not yet been reached RH目标 , starting the second heating component, wherein the second heating component is arranged on the water receiving tray to heat the condensed water in the water receiving tray.

[0125] In the above embodiment, if the speed of the fan 62 has reached the maximum speed, the humidification rate of the compartment 1 still does not meet the requirements. By providing a second heating component, the condensed water in the water receiving tray can be converted into water vapor, and the water vapor can enter the air supply channel 61 through the return air channel and the second air inlet 616 to serve as a supplementary humidification source, thereby further improving the humidification rate of the compartment 1.

[0126] As a supplementary humidification method, the first heating component 63 and the second heating component can be started simultaneously or separately. In different embodiments, for the sake of energy consumption and humidity change rate stability, when the second heating component is started, the first heating component can be stopped or kept started, and when the first heating component 63 is started, the second heating component can be stopped or kept started. In addition, the power of the first heating component 63 and the second heating component can be adjusted according to the humidity change rate v of the compartment 1. RH changes with the changes of .

[0127] The conditions for starting the first heating component 63 may be: 1. The speed of the fan 62 has reached the maximum speed, and the humidification rate of the compartment 1 still does not meet the requirements; 2. The speed of the fan 62 has reached the maximum speed, and the power of the second heating component has reached the maximum power, and the humidification rate of the compartment 1 still does not meet the requirements. The conditions for starting the second heating component may be: 1. The speed of the fan 62 has reached the maximum speed, and the humidification rate of the compartment 1 still does not meet the requirements; 2. The speed of the fan 62 has reached the maximum speed, and the power of the first heating component 63 has reached the maximum power, and the humidification rate of the compartment 1 still does not meet the requirements.

[0128] In some embodiments, the control method further includes: after the fan 62 is started, if the temperature of the compartment 1 is greater than a preset temperature, the fan 62 is stopped and the refrigeration damper provided on the compartment 1 is opened so that the cold air outside the compartment 1 flows into the compartment 1 through the refrigeration damper.

[0129] Optionally, the preset temperature can be set to the upper limit of the refrigeration temperature range of the compartment 1. In the above embodiment, if the humidification process of the mixed gas causes the temperature of the compartment 1 to be too high, the refrigeration damper can be opened to allow cool air with a lower temperature to enter the compartment 1, thereby lowering the temperature of the compartment 1.

[0130] In some embodiments, the control method further comprises: if the humidity of the compartment 1 is greater than a preset humidity, opening the dehumidification damper 4 provided on the compartment 1 so that the gas in the compartment 1 flows out of the compartment 1 through the dehumidification damper 4 .

[0131] In the above embodiment, referring to FIG5 , the refrigeration equipment can not only humidify the compartment 1 through the air supply device 6 , but also, when the humidity in the compartment 1 is too high, open the dehumidification damper 4 so that the gas with higher humidity in the compartment 1 flows out of the compartment 1 , thereby reducing the humidity in the compartment 1 .

[0132] In the above embodiment, the dehumidification process of the refrigeration equipment can be achieved based on the linkage of the dehumidification damper 4 and the humidity control membrane 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 greater than the humidity of the external environment in which the compartment 1 is located, the moisture in the compartment 1 can not only flow out of the compartment 1 through the dehumidification damper 4, but also flow out of the compartment 1 through the humidity control membrane 21, thereby further improving the dehumidification rate.

[0133] It should be noted that, depending on the actual situation, the preset temperature and preset humidity mentioned above can be set to a single value point or a range of values. For example, when determining whether the fan 62 is to be started, the preset humidity can be set to a range of values, so that the judgment condition for starting the fan 62 can be that the humidity of the compartment 1 is less than the lower limit of the range of values; and when determining the speed of the fan 62, the preset humidity can be set to a single value point for ease of calculation.

[0134] The following describes a humidity control process of an embodiment of the refrigeration equipment disclosed herein.

[0135] The compartment 1 can be used to store food ingredients such as fruits and vegetables, and can keep the stored food ingredients fresh. The user can independently adjust the internal humidity of the compartment 1 according to the types of fruits and vegetables stored in the compartment 1 to extend the shelf life of the food ingredients. For example, the user can adjust the internal humidity of the compartment 1 through a physical adjustment button, or through a touch panel. The way in which the user adjusts the internal humidity of the compartment 1 can be set according to actual needs in actual applications, and the embodiments of the present disclosure are not limited to this.

[0136] The temperature and humidity sensor 3 is connected to the compartment 1. The temperature and humidity sensor 3 can detect the internal humidity of the compartment 1 to detect whether the internal humidity of the compartment 1 reaches a preset value. The electronic control motherboard can perform corresponding operations according to the detection results to make the internal humidity of the compartment 1 reach the preset value.

[0137] When the temperature and humidity sensor 3 detects that the internal humidity of the compartment 1 is lower than the preset value, the electronic control board controls the fan 62 to start. The start of the fan 62 can increase the air flow speed in the air supply channel 61, and more quickly introduce the outside air into the compartment 1, thereby increasing the internal humidity of the compartment 1.

[0138] When the fan 62 is started and the running time 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 board controls the fan 62 to stop running, so that the internal humidity of the compartment 1 reaches the preset value and then maintains the preset value. The preset running time can be set according to actual needs in actual applications. The embodiment of the present disclosure is not limited to this. For example, the preset running time can be 30 seconds. When the fan 62 is started and the running time 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 starts the first heating component 63 to heat the mixed gas in the air supply channel 61, and starts the second heating component to heat the condensed water in the docking water tray. The condensed water evaporates when heated and can increase the internal humidity of the compartment 1 in a short time. By heating the condensed water, the fan 62 can be assisted in humidifying 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 a preset value, the electronic control board controls the fan 62 to stop running and turns off the first heating component 63 and the second heating component, so that the internal humidity of the compartment 1 reaches the preset value and then maintains the preset value.

[0139] The dehumidification damper 4 is connected to the compartment 1. The dehumidification damper 4 can adjust the internal humidity of the compartment 1 by opening and closing the 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 board can control the dehumidification damper 4 connected to the compartment 1 to open the damper, so that the internal humid air of the compartment 1 is discharged to the outside of the compartment 1 through air convection, thereby preventing the internal humidity of the compartment 1 from being too high to form condensation water, which causes the condensation water to aggravate the decay of fruits and vegetables. The internal humid air of the compartment 1 is discharged to the outside of the compartment 1 through the damper through air convection, which can reduce the internal humidity of the compartment 1. After the damper is opened for a 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 board controls the dehumidification damper 4 connected to the compartment 1 to close the damper, thereby preventing the internal humid air of the compartment 1 from being discharged to the outside of the compartment 1 through the damper through air convection, thereby maintaining the preset value after the internal humidity of the compartment 1 reaches the preset value. The preset opening time can be set according to actual needs in actual applications, and the embodiments of the present disclosure do not limit this. The dehumidification damper 4 can be replaced by a cover plate and a gear motor combination. The specific form of the dehumidification damper 4 can be set according to actual needs in actual applications, and the embodiments of the present disclosure do not limit this.

[0140] For example, when there are more fruits and vegetables stored in compartment 1, the water vapor generated by the transpiration of plant-type fresh ingredients such as fruits and vegetables is also correspondingly more, the internal humidity of compartment 1 will be relatively high, and condensation water is very likely to occur under the lower temperature conditions inside the refrigerator. A large amount of accumulated condensation water is prone to breed bacteria, mold and other microorganisms, and fruits and vegetables may also be soaked and rotted, which is not conducive to the preservation of fruits and vegetables. At this time, opening the dehumidification damper 4 can discharge excess water vapor, thereby ensuring that compartment 1 is always at an appropriate humidity.

[0141] In some embodiments, the control method described above can be implemented based on a controller and a corresponding readable and writable storage medium. The controller can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof for performing the functions described in the present disclosure.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit them. Although the present disclosure has been described in detail with reference to preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solutions claimed for protection in the present disclosure.

Claims

1. A refrigeration device comprising: A compartment (1) configured to store items under refrigeration; and The air supply device (6) comprises an air supply channel (61) and a fan (62), wherein the air supply channel (61) has a first air inlet (615), a second air inlet (616) and an air outlet (617), wherein the first air inlet (615) is used to communicate with the external environment of the refrigeration device to obtain fresh air, the second air inlet (616) is connected to the return air channel of the refrigeration device to obtain refrigerated return air, and the air outlet (617) is connected to the interior of the compartment (1), and the fan (62) is arranged inside the air supply channel (61) and is configured to drive the fresh air and the refrigerated return air to form a mixed gas as a humidification source and enter the compartment (1).

2. The refrigeration device according to claim 1, wherein: The air supply channel (61) comprises a first channel section (61A) and a second channel section (61B), the second channel section (61B) being located downstream of the first channel section (61A) along the airflow direction, the first air inlet (615) and the second air inlet (616) being connected at the upstream end of the first channel section (61A) along the airflow direction, and the fan (62) being arranged in the second channel section (61B).

3. The refrigeration device according to claim 1 or 2, wherein: The air supply channel (61) comprises a second channel section (61B) and a third channel section (61C); the third channel section (61C) is located downstream of the second channel section (61B) along the airflow direction; and a porous adsorption component is provided in the third channel section (61C).

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

5. The refrigeration device according to any one of claims 1 to 4, wherein: The air supply channel (61) comprises a first channel section (61A), a second channel section (61B) and a third channel section (61C) which are arranged in sequence along the airflow direction; the first air inlet (615) and the second air inlet (616) are connected at the upstream end of the first channel section (61A) along the airflow direction; the fan (62) is arranged in the second channel section (61B); and a porous adsorption component is provided in the third channel section (61C).

6. The refrigeration device according to any one of claims 1 to 5, wherein: The air supply device (6) includes a first heating component (63), which is disposed at least in a portion of the outer periphery of the air supply passage (61) and is configured to heat the mixed gas in the air supply passage (61).

7. The refrigeration equipment according to any one of claims 1 to 6 comprises a water receiving tray and a second heating component, wherein the water receiving tray is configured to collect condensed water generated by the refrigeration equipment, the position of the water receiving tray is fluidly connected to the return air channel of the refrigeration equipment, and the second heating component is disposed on the water receiving tray and is configured to heat the condensed water in the water receiving tray.

8. The refrigeration device according to any one of claims 1 to 7, comprising a humidity control membrane (21), wherein the humidity control membrane (21) is arranged on the compartment (1) and is configured to allow water vapor to flow from the side with higher humidity between the inner side and the outer side of the compartment (1) to the side with lower humidity.

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

10. The refrigeration device according to any one of claims 1 to 9, comprising: a dehumidification damper (4), the dehumidification damper (4) being disposed on the compartment (1) in an openable and closable manner; and A humidity detection device is configured to detect the humidity of the compartment (1) so as to control the dehumidification damper (4) to be opened or closed according to the humidity of the compartment (1).

11. The refrigeration device according to any one of claims 1 to 10, comprising: A refrigeration damper, the refrigeration damper is openably and closably arranged on the compartment (1) and is configured to adjust the connection state between the compartment (1) and the air inlet passage of the refrigeration equipment; and The temperature detection device is configured to detect the temperature of the compartment (1) so as to control the opening or closing of the refrigeration damper according to the temperature of the compartment (1).

12. A method for controlling a refrigeration device according to any one of claims 1 to 11, comprising: If the humidity of the compartment (1) is lower than a preset humidity, the fan (62) is started so that the fresh air and the refrigerated return air form the mixed gas and enter the compartment (1).

13. The control method of the refrigeration equipment according to claim 12, further comprising: The rotation speed of the fan (62) is determined according to the difference between the humidity of the compartment (1) and a preset humidity and the volume of the mixed gas required to be supplemented so that the humidity of the compartment (1) reaches the preset humidity.

14. The control method of the refrigeration equipment according to claim 12 or 13, comprising: After the fan (62) is started, if the humidity change rate v of the compartment (1) is RH Less than the target rate v RH 目标 , increase the speed of the fan (62) until the humidity change rate v of the compartment (1) reaches RH To achieve the target rate v RH目标 ; and / or After the fan (62) is started, if the humidity change rate v of the compartment (1) is RH Greater than the target rate v RH 目标 , reduce the speed of the fan (62) until the humidity change rate v of the compartment (1) reaches RH Achieve the stated purpose Standard rate v RH目标 .

15. The control method of the refrigeration equipment according to claim 14, further comprising: If the speed of the fan (62) has reached the maximum speed and the humidity change rate v RH The target rate v has not yet been reached RH目标 , starting a first heating component (63), wherein the first heating component (63) is disposed at least a portion of the periphery of the air supply channel (61) to heat the mixed gas in the air supply channel (61).

16. The control method of the refrigeration equipment according to claim 15, further comprising: If the heating power of the first heating component (63) has reached the maximum heating power and the humidity change rate v RH The target rate v has not yet been reached RH目标 , starting the second heating component, wherein the second heating component is arranged on the water receiving tray to heat the condensed water in the water receiving tray.

17. The control method of a refrigeration device according to any one of claims 14 to 16, further comprising: If the speed of the fan (62) has reached the maximum speed and the humidity change rate v RH The target rate v has not yet been reached RH 目标 , starting the second heating component, wherein the second heating component is arranged on the water receiving tray to heat the condensed water in the water receiving tray.

18. The control method of a refrigeration device according to any one of claims 12 to 17, further comprising: After the fan (62) is started, if the temperature of the compartment (1) is greater than a preset temperature, the fan (62) is stopped and a refrigeration air door provided on the compartment (1) is opened, so that cold air outside the compartment (1) flows into the compartment (1) through the refrigeration air door.

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

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