Refrigeration equipment

Abstract

The utility model provides refrigeration equipment. The refrigeration equipment comprises a compartment configured to refrigerate stored articles; the air supply device comprises an air supply channel and a fan, the air supply channel is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet is used for being communicated with the external environment where the refrigeration equipment is located to obtain fresh air, the second air inlet is communicated with an air return channel of the refrigeration equipment to obtain freezing return air, and the air outlet is communicated with the interior of the compartment; the fan is arranged in the air supply channel and is configured to drive the fresh air and the freezing return air to form mixed gas serving as a humidifying source to enter the chamber. According to the refrigeration equipment, the control effect can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of refrigeration equipment, and in particular to a refrigeration equipment. Background Art

[0002] As people's material living standards improve, the requirements for refrigerators' fresh-keeping functions are getting higher and higher. The temperature and humidity of the fruit and vegetable compartment are important factors that determine the fresh-keeping time and quality of fruits and vegetables. At present, temperature control technology is very mature. For humidity control and preservation, the current mainstream refrigerators usually adopt the following methods: one is passive humidity control technology. This technology that uses a breathable membrane to control humidity has the problem of low efficiency in regulating humidity. In a low-humidity environment, it will sacrifice part of the moisture of fruits and vegetables, resulting in serious dry loss of fruits and vegetables. In a high-humidity environment, condensation on the surface of fruits and vegetables is not easy to dissipate, thus accelerating decay. The other is ultrasonic humidification technology. This method requires users to replenish water in time, and the small water droplets added to the compartment are easily condensed on the surface of fruits and vegetables, causing fruits and vegetables to decay faster. Another is volatile humidification technology. This technology not only requires users to replenish water in time, but also has poor humidification effect and is difficult to maintain high humidity for a long time. Utility Model Content

[0003] The purpose of the present disclosure is to provide a refrigeration device to improve the humidity control effect of the refrigeration device.

[0004] A first aspect of the present disclosure provides a refrigeration device, comprising:

[0005] Compartments configured for refrigerated storage of items; and

[0006] The air supply device comprises an air supply channel and a fan, wherein the air supply channel has a first air inlet, a second air inlet and an air outlet, wherein the first air inlet is used to communicate with the external environment of the refrigeration device to obtain fresh air, the second air inlet is communicated with the return air channel of the refrigeration device to obtain refrigerated return air, the air outlet is communicated with the interior of the compartment, and 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 and enter the compartment.

[0007] 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.

[0008] 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.

[0009] In some embodiments, the air supply channel is provided with a drain port, and the refrigeration equipment includes a drain pipe, which is correspondingly arranged below the third channel section and is configured to collect condensed water generated by the third channel section.

[0010] 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.

[0011] In some embodiments, the air supply device includes a first heating component, which is disposed 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.

[0012] In some embodiments, a water receiving tray and a second heating component are included, 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 in the water receiving tray and is configured to heat the condensed water in the water receiving tray.

[0013] In some embodiments, a humidity control film is included, and the humidity control film is 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.

[0014] In some embodiments, a humidity detection device is included, and the humidity detection device is configured to detect the humidity of the compartment to control the fan to start or stop according to the humidity of the compartment.

[0015] In some embodiments, including:

[0016] a dehumidification damper, the dehumidification damper being openably and closably disposed on the compartment; and

[0017] 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.

[0018] In some embodiments, including:

[0019] 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 device; and

[0020] 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.

[0021] A second aspect of the present disclosure provides a control method for a refrigeration device according to the first aspect of the present disclosure, comprising:

[0022] If the humidity of the compartment is lower than a preset humidity, the fan is started so that the fresh air and the refrigerated return air form the mixed gas and enter the compartment.

[0023] In some embodiments, the method further includes: determining the rotation speed of the fan according to the difference between the humidity of the compartment and the preset humidity and the volume of the mixed gas required to be supplemented to make the humidity of the compartment reach the preset humidity.

[0024] In some embodiments, including:

[0025] 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

[0026] 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 .

[0027] In some embodiments, it also includes:

[0028] 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 disposed at least a portion of an outer periphery of the air supply channel to heat the mixed gas in the air supply channel.

[0029] In some embodiments, the method further comprises: 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.

[0030] In some embodiments, the 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.

[0031] In some embodiments, the 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 air door disposed on the compartment is opened to allow cold air outside the compartment to flow into the compartment through the refrigeration air door.

[0032] In some embodiments, if the humidity of the compartment is greater than a preset humidity, a dehumidification damper disposed on the compartment is opened so that the gas in the compartment flows out of the compartment through the dehumidification damper.

[0033] 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.

[0034] 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.

[0035] Compared with the 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 the object.

[0036] 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.

[0037] Therefore, the refrigeration equipment provided by the present disclosure can improve its own humidity control effect.

[0038] The control method of the refrigeration equipment provided by the present disclosure has the advantages of the aforementioned refrigeration equipment.

[0039] 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

[0040] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0041] Figure 1 This is a schematic diagram of the structure of a compartment of a refrigeration device according to some embodiments of the present disclosure.

[0042] Figure 2 It is a schematic diagram of the cross-sectional structure of the air supply device of some embodiments of the present disclosure.

[0043] Figure 3 It is a schematic diagram of the exploded structure of the air supply device of some embodiments of the present disclosure.

[0044] Figure 4 The present invention is a flowchart of some embodiments of the refrigeration equipment control method of some embodiments of the present disclosure.

[0045] Figure 5 Schematic diagram of the flow chart of other embodiments of the refrigeration equipment control method of some embodiments of the present disclosure.

[0046] Figures 1 to 5 In the figure, each reference numeral represents:

[0047] 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. Third air inlet; 618. Water collecting tank; 619. Drain outlet; 62. Fan; 63. First heating component; 7. Back plate; 8. Drain pipe; 9. Inner tank. DETAILED DESCRIPTION

[0048] 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 of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means 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 creative work are within the scope of protection of the present disclosure.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present disclosure. Meanwhile, 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 the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, these technologies, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0050] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0051] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and 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 orientation or be constructed and operated in a specific orientation, and therefore 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.

[0052] refer to Figures 1 to 3 Some embodiments of the present disclosure provide a refrigeration device, including a compartment 1 and an air supply device 6. The compartment 1 is configured to refrigerate stored items. The air supply device 6 includes 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 frozen return air, 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 frozen return air to form a mixed gas as a humidification source into the compartment 1.

[0053] The refrigeration equipment can be a refrigerator, a freezer, etc. Compartment 1 can be a fruit and vegetable compartment or other compartment with humidity control requirements. Figure 1 and Figure 2The air supply device 6 is arranged on the rear wall of the compartment 1, that is, the side wall of the compartment 1 on the side close to the back plate 7 of the refrigeration equipment, and the air supply device 6 is installed between the back plate 7 and the compartment 1.

[0054] 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 the compartment 1, and the water vapor in the fresh air can be used as a moisture source for humidifying the compartment 1.

[0055] The inventors found that on the enthalpy-humidity 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 saturated 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.

[0056] Therefore, in order to keep the temperature of the compartment 1 basically at the temperature required for the refrigerated items during the humidification process, the cold return air in the refrigeration equipment can be mixed with the fresh air, so as to meet the needs of humidification and temperature control.

[0057] 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:

[0058] ρ 外 V 外 c p外 T 外 +ρ 冷冻 V 冷冻 c p冷冻 T 冷冻 =ρ 总 V 总 c p总 T 总 ; (1)

[0059] 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)

[0060] In formula (1), ρ 外 Indicates the density of fresh air, V 外 represents the volume of fresh air, cp外 represents 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, c p冷冻 Indicates the specific heat capacity of the refrigerated return air, T 冷冻 represents the temperature of the refrigeration return air, ρ 总 Indicates the density of the mixed gas, V 总 represents the volume of the mixed gas, c p总 represents the specific heat capacity of the mixed gas, T 总 Indicates the temperature of the mixed gas.

[0061] 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 refrigeration return air, P 饱冷冻 Indicates the saturated vapor pressure of the refrigeration return air, ρ 冷冻 Indicates the density of refrigeration return air, V 冷冻 Indicates the volume of refrigeration return air, RH 总 Indicates the relative humidity of the mixed gas, P 饱总 represents 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 in the process of mixing fresh air and refrigerated return air.

[0062] Based on the above formulas (1) and (2), the ratio of fresh air to refrigerated return air required to make the humidity of the 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 experiment simulating the daily use environment of the refrigeration equipment to better adjust the mixing ratio of fresh air and refrigerated return air.

[0063] Optionally, refer to Figure 2, the air supply channel 61 includes a ventilation cover 611 and a first ventilation tube 612. The ventilation cover 611 is installed on the back plate 7 of the refrigeration equipment. The ventilation cover 611 includes an end cover and a cylindrical portion. The end cover is arranged at one end of the axial direction of the cylindrical portion. The outer diameter of the end cover is greater than the outer diameter 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 ventilation tube 612 includes a first barrel section and a second barrel section arranged along its own axial direction. There is a second flange protruding toward the radial inner side of the first ventilation tube 612 between the first barrel section and the second barrel section. The cylindrical portion and the first barrel section are gap-matched, and one end of the cylindrical portion close to the second flange forms a gap with the second flange. The gap is the second air inlet 616. The second air inlet 616 is connected to the return air channel of the refrigeration equipment 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.

[0064] 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 channel 61 through the first air inlet 615 and the second air inlet 616 respectively, and enter the air supply channel 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.

[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 the 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 the object.

[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 to 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] Combine the following Figures 1 to 3 , the structure of the refrigeration equipment of some embodiments of the present disclosure is further described.

[0070] In some embodiments, reference Figure 2The 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. The fan 62 is arranged in the second channel section 61B.

[0071] 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 moisturize the mixed gas.

[0072] 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 perform heat exchange and water vapor exchange, and then further perform 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.

[0073] In some embodiments, reference Figure 2 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 air flow direction. A porous adsorption component is provided in the third channel section 61C.

[0074] 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, wherein the container is provided with a plurality of vents. Figure 2 and Figure 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 ventilation holes.

[0075] 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 arranged 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.

[0076] 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 arranged below the third channel section 61C and configured to collect condensed water generated by the third channel section 61C.

[0077] Optionally, refer to Figure 2The porous adsorption component includes an adsorption material box 614 , and the bottom of the adsorption material box 614 has an opening connected to the drain port 619 .

[0078] Since the temperature of the mixed gas gradually decreases when passing through the porous adsorption component, condensation is easily formed. By setting 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.

[0079] 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 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.

[0080] 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 two components of 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, so the temperature of the compartment 1 can be less affected on the basis of maintaining the humidification effect.

[0081] The air supply channel 61 mentioned above includes a plurality of channel sections, which may be integrally provided or assembled from a plurality of separately provided components. Figure 2 and Figure 3 The air supply channel 61 includes a ventilation cover 611, a first ventilation cylinder 612, a second ventilation cylinder 613 and an adsorption material box 614. Figure 2 The part where the first ventilation tube 612 and the ventilation cover 611 are gap-fitted forms a fitting section, the downstream part of the fitting section in the first ventilation tube 612 along the airflow direction forms a first channel section 61A, the position in the second ventilation tube 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.

[0082] In some embodiments, the air supply device 6 includes a first heating component 63 , which is disposed at least a portion of the periphery of the air supply channel 61 and is configured to heat the mixed gas in the air supply channel 61 .

[0083] Optionally, refer to Figure 2 and Figure 3 The first heating component 63 is an aluminum foil heater, and the aluminum foil heater is wrapped around the outer periphery of the second ventilation tube 613.

[0084] The air volume of the mixed gas is related to the rotation speed of the fan 62. In the above embodiment, if the rotation 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 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.

[0085] 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 water receiving tray is located in fluid communication with the return air channel of the refrigeration equipment. The second heating component is disposed in the water receiving tray and is configured to heat the condensed water in the water receiving tray.

[0086] The second heating component can be an electric heating component such as an electric heating wire. The water receiving tray 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 refrigerated return air of the refrigeration device can flow in the interlayer, and the water vapor formed by the condensed water in the water receiving tray can enter the air supply channel 61 along with the refrigerated return air.

[0087] 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 turned 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.

[0088] 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. Figure 2 On the basis of providing the air supply device 6 , a humidity control tank 10 and a corresponding third heating component 5 can still be provided in the compartment 1 , wherein the third heating component 5 is provided on the tank wall of the humidity control tank 10 .

[0089] 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.

[0090] In the above embodiment, the refrigeration device can control the fan 62 to start or stop according to the detection result of the humidity detection device, so as to start or stop the humidification process according to the humidity of the compartment 1 and the change of the humidity.

[0091] In some embodiments, reference Figure 1 The refrigeration device includes a dehumidification damper 4 and a humidity detection device. The dehumidification damper 4 and the humidity detection device. The dehumidification damper 4 can be opened and closed on the compartment 1, and the humidity detection device is configured to detect the humidity of the compartment 1 to control the dehumidification damper 4 to be opened or closed according to the humidity of the compartment 1.

[0092] In the above embodiment, the refrigeration equipment can not only humidify the compartment 1 through the air supply device 6, but also open the dehumidification damper 4 when the humidity in the compartment 1 is too high, so that the gas with high humidity in the compartment 1 flows out of the compartment 1, thereby reducing the humidity in the compartment 1.

[0093] In some embodiments, reference Figure 1 The refrigeration device includes a humidity control membrane 21, which is arranged on the compartment 1 and 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.

[0094] 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.

[0095] Optionally, in order to make the oxygen content of the compartment 1 also within a reasonable range, the refrigeration device further comprises an oxygen control membrane 22, which is arranged on the compartment 1 and configured to make oxygen flow from the side with a higher concentration between the inner side and the outer side of the compartment 1 to the side with a lower concentration.

[0096] In some embodiments, the refrigeration device includes a refrigeration damper and a temperature detection device. 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 channel of the refrigeration device. The temperature detection device is configured to detect the temperature of the compartment 1 to control the opening or closing of the refrigeration damper according to the temperature of the compartment 1.

[0097] 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 cold air with a lower temperature to enter the compartment 1, thereby reducing the temperature of the compartment 1.

[0098] To measure the humidity and temperature of compartment 1, refer to Figure 1 The refrigeration device includes a temperature and humidity sensor 3 arranged in the compartment 1, and the temperature and humidity sensor 3 is both a humidity detection device and a temperature detection device.

[0099] refer to Figure 4and Figure 5 Some embodiments of the present disclosure also provide a control method for the aforementioned refrigeration equipment, including: if the humidity of the compartment 1 is lower than the preset humidity, starting the fan 62 so that the fresh air and the refrigerated return air form a mixed gas and enter the compartment 1.

[0100] Figure 4 In the figure, RH represents the humidity of compartment 1, RH 预设 represents the preset humidity, T represents the temperature of compartment 1, T 预设max Indicates the upper limit of the preset temperature range.

[0101] The control method of the refrigeration equipment provided by the embodiment of the present disclosure has the advantages of the aforementioned refrigeration equipment.

[0102] In some embodiments, reference Figure 4 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 make the humidity of the compartment 1 reach the preset humidity.

[0103] The air volume of the mixed gas required for humidification can be calculated using the following moisture content formula:

[0104] m=ρV-10 3 m / d; (3)

[0105] 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 air volume of the gas, the unit is m 3 , d represents the moisture content of the gas, in g / m 3 .

[0106] For the mixed gas used as the humidification source, the water content m2, density ρ2, air volume V2 and humidity d2 of the mixed gas satisfy:

[0107] m2=ρ2V2-10 3 m2 / d2; (4)

[0108] For the compartment 1 at steady state after reaching the preset humidity, the water content m3 of the gas in the compartment 1 at steady state, the density ρ3 of the gas in the compartment 1 at steady state, the volume V1 of the compartment 1 and the moisture content d3 of the gas in the compartment 1 at steady state meet:

[0109] m3=ρ3V1-10 3 m3 / d3; (4)

[0110] 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 meet the following conditions:

[0111] m1=ρ1(V1-V2)-10 3 m1 / d1; (5)

[0112] According to the law of conservation of mass of water vapor, m3=m1+m2; (6)

[0113] By using equations (3), (4), (5) and (6), V2 can be accurately solved, thereby further obtaining the appropriate rotation speed of the fan 62.

[0114] In some embodiments, reference Figure 4 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 of compartment 1 RH Reach target rate v RH目标 .

[0115] 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 of compartment 1 RH Reach target rate v RH目标 .

[0116] The control method of the above embodiment can keep the speed of the fan 62 at the target speed v RH The required rotation speed can not only improve the problem of large temperature fluctuation and high temperature in the compartment 1 caused by the excessively fast rotation speed of the fan 62, and the difficulty in balancing the humidification and temperature control requirements, but also improve the problem of low humidification efficiency in the compartment 1 caused by the excessively slow rotation speed of the fan 62.

[0117] 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.

[0118] Humidity change rate v RHIt 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.

[0119] 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.

[0120] 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 turned 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.

[0121] In some embodiments, reference Figure 5 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.

[0122] In the above embodiment, if the speed of the fan 62 has reached the maximum speed, the humidification rate of the compartment 1 still cannot 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.

[0123] 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 consideration 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.

[0124] 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.

[0125] 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.

[0126] 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 cold air with a lower temperature to enter the compartment 1, thereby reducing the temperature of the compartment 1.

[0127] 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 disposed on the compartment 1 so that the gas in the compartment 1 flows out of the compartment 1 through the dehumidification damper 4 .

[0128] In the above embodiments, reference Figure 5 The refrigeration equipment can not only humidify the compartment 1 through the air supply device 6, but also open the dehumidification damper 4 when the humidity in the compartment 1 is too high, so that the gas with high humidity in the compartment 1 flows out of the compartment 1, thereby reducing the humidity in the compartment 1.

[0129] In the above embodiment, the dehumidification process of the refrigeration equipment can be realized 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 where 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.

[0130] It should be noted that, according to the actual situation, the preset temperature and preset humidity mentioned above can take a numerical point or a numerical range. For example, when judging whether the fan 62 is started, the preset humidity can take a numerical range, 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 numerical range; and when determining the speed of the fan 62, the preset humidity can take a numerical point for the convenience of calculation.

[0131] 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 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.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the 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 solution for protection requested by the present disclosure.

Claims

1. A refrigeration device, It is characterized in that include: 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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 claim 1, It is characterized in that 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 claim 1, It is characterized in that 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 device according to claim 1, It is characterized in that It 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.

8. The refrigeration device according to claim 1, It is characterized in that It comprises 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 to the side with lower humidity between the inner side and the outer side of the compartment (1).

9. A refrigeration device according to any one of claims 1 to 8, It is characterized in that It comprises a humidity detection device, which 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 8, It is characterized in that include: 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. A refrigeration device according to any one of claims 1 to 8, It is characterized in that include: 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).

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