Refrigeration equipment and its control methods

Abstract

This disclosure provides a refrigeration device and its control method. The refrigeration device includes: a compartment configured for refrigerating and storing items; and an air supply device including an air supply duct and a fan. The air supply duct has a first air inlet, a second air inlet, and an air outlet. The first air inlet is connected to the external environment of the refrigeration device to obtain fresh air. The second air inlet is connected to the return air duct of the refrigeration device to obtain refrigerated return air. The air outlet is connected to the interior of the compartment. The fan is disposed inside the air supply duct and configured to drive the fresh air and refrigerated return air to form a mixed gas as a humidification source, which then enters the compartment. The control method of the refrigeration device includes: if the humidity of the compartment is lower than a preset humidity, activating the fan to allow the fresh air and refrigerated return air to form a mixed gas and enter the compartment. The refrigeration device and its control method disclosed herein can improve the control effect.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration equipment, and in particular to a refrigeration device and its control method. Background Technology

[0002] As people's living standards improve, their demands for refrigerator preservation functions are increasing. The temperature and humidity of the fruit and vegetable compartment are crucial factors determining the preservation time and quality of fruits and vegetables. Currently, temperature control technology is quite mature. For humidity control and preservation, mainstream refrigerators typically employ the following methods: One is passive humidity control technology, which uses a permeable membrane. This technology has issues with humidity regulation; in low-humidity environments, it sacrifices some moisture from fruits and vegetables, leading to severe dehydration, while in high-humidity environments, condensation on the surface of fruits and vegetables is difficult to dissipate, accelerating spoilage. Another method is ultrasonic humidification technology. This method requires users to add water regularly, and the water added to the compartment is in the form of small, dispersed droplets, which easily form condensation on the surface of fruits and vegetables, accelerating spoilage. A third method is volatile humidification technology. This technology not only requires users to add water regularly, but also has poor humidification effects, making it difficult to maintain high humidity for extended periods. Summary of the Invention

[0003] The purpose of this disclosure is to provide a refrigeration device and its control method to improve the humidity control effect of the refrigeration device.

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

[0005] A compartment configured for refrigerated storage of items; and

[0006] An air supply device includes an air supply duct and a fan. The air supply duct has a first air inlet, a second air inlet, and an air outlet. The first air inlet is used to connect with the external environment where the refrigeration equipment is located to obtain fresh air. The second air inlet is connected with the return air duct of the refrigeration equipment to obtain refrigerated return air. The air outlet is connected with the interior of the compartment. The fan is disposed inside the air supply duct 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 being located downstream of the first channel section along the airflow direction, the first air inlet and the second air inlet being connected at the upstream end of the first channel section along the airflow direction, and the fan being disposed within 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 being located downstream of the second channel section along the airflow direction, and the third channel section being provided with a porous adsorption component.

[0009] In some embodiments, the air supply duct is provided with a drain outlet, and the refrigeration equipment includes a drain pipe, which is correspondingly disposed below the third channel section and configured to collect condensate 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 sequentially 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 disposed 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 element disposed on at least a portion of the outer periphery of the air supply channel and configured to heat the mixed gas within the air supply channel.

[0012] In some embodiments, a water collection tray and a second heating element are included. The water collection tray is configured to collect condensate generated by the refrigeration equipment. The water collection tray is located in fluid communication with the return air duct of the refrigeration equipment. The second heating element is disposed on the water collection tray and configured to heat the condensate in the water collection tray.

[0013] In some embodiments, a humidity-controlled membrane is included, which is disposed on the compartment and configured to allow water vapor to flow from the side with higher humidity on the inside and outside of the compartment to the side with lower humidity.

[0014] In some embodiments, a humidity detection device is included, which is configured to detect the humidity of the room in order to control the fan to start or stop based on the humidity of the room.

[0015] In some embodiments, including:

[0016] Dehumidifying damper, which is closable and installable on the compartment; and

[0017] A humidity detection device is configured to detect the humidity of the room in order to control the opening or closing of the dehumidification damper based on the humidity of the room.

[0018] In some embodiments, including:

[0019] A refrigerated air damper, which is openable and closable on the compartment and configured to adjust the communication state between the compartment and the air inlet channel of the refrigeration equipment; and

[0020] A temperature detection device is configured to detect the temperature of the compartment in order to control the opening or closing of the refrigeration damper based on the temperature of the compartment.

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

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

[0023] In some embodiments, the method further includes: determining the fan speed based on the difference between the humidity of the room and a preset humidity and the volume of mixed gas required to bring the humidity of the room to the preset humidity.

[0024] In some embodiments, including:

[0025] After the fan is started, if the humidity change rate v of the room RH Less than the target speed v RH目标 Increase the fan speed until the humidity change rate v in the room is reached. RH To reach the target rate v RH目标 ; and / or

[0026] After the fan is started, if the humidity change rate v of the room RH Greater than the target speed v RH目标 Reduce the fan speed until the humidity change rate v in the room is reduced. RH To reach the target rate v RH目标 .

[0027] In some embodiments, it also includes:

[0028] If the fan speed has reached its maximum speed, and the humidity change rate v RH The target rate v has not yet been reached. RH目标 The first heating element is activated, wherein the first heating element is disposed on at least a portion of the outer periphery of the air supply channel to heat the mixed gas within the air supply channel.

[0029] In some embodiments, the method further includes: if the heating power of the first heating element 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 The second heating element is activated, wherein the second heating element is disposed on the water receiving tray to heat the condensate in the water receiving tray.

[0030] In some embodiments, the method further includes: if the fan speed has reached its maximum speed, and the humidity change rate v RH The target rate v has not yet been reached. RH目标The second heating element is activated, wherein the second heating element is disposed on the water receiving tray to heat the condensate 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 the refrigeration damper provided on the compartment is opened so that cold air from outside the compartment flows into the compartment through the refrigeration damper.

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

[0033] In the refrigeration equipment provided in the embodiments of this disclosure, when the fan is started, fresh air and refrigerated return air enter the air supply channel through the first air inlet and the second air inlet, respectively. Under the wind pressure generated by the fan, they enter the air supply channel. Under the disturbance of the fan, the fresh air and refrigerated return air can be mixed in advance. During the mixing process, the fresh air and 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 to passive humidity control technology, in the humidification method of the embodiments of this 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 dehydration of fruits and vegetables.

[0035] Compared to ultrasonic humidification technology, in the humidification method of the embodiments of this disclosure, the humidification source is a mixture of fresh air and refrigerated return air, which is less likely to form condensation on the surface of the object.

[0036] Compared to volatile humidification technology, in the humidification method of the embodiments of this disclosure, when the fan is started, the air supply device can continuously and stably provide mixed gas to the room without considering the issue of water replenishment, and therefore no additional operation is required from the user.

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

[0038] The control method for the refrigeration equipment provided in this disclosure has the advantages of the aforementioned refrigeration equipment.

[0039] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0040] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

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

[0042] Figure 2 This is a cross-sectional structural schematic diagram of an air supply device according to some embodiments of the present disclosure.

[0043] Figure 3 This is an exploded structural diagram of an air supply device according to some embodiments of the present disclosure.

[0044] Figure 4 This is a flowchart illustrating some embodiments of the refrigeration equipment control method of this disclosure.

[0045] Figure 5 The following are schematic flowcharts illustrating some embodiments of the refrigeration equipment control method of this disclosure.

[0046] Figures 1 to 5 In the figures, the labels represent:

[0047] 1. Chamber; 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 duct; 613. Second ventilation duct; 614. Adsorption material box; 615. First air inlet; 616. Second air inlet; 617. Third air inlet; 618. Water collection tank; 619. Drain outlet; 62. Fan; 63. First heating component; 7. Back panel; 8. Drain pipe; 9. Inner liner. Detailed Implementation

[0048] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0050] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0051] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0052] refer to Figures 1 to 3 Some embodiments of this disclosure provide a refrigeration device, including a compartment 1 and an air supply device 6. The compartment 1 is configured for refrigerating and storing items. The air supply device 6 includes an air supply duct 61 and a fan 62. The air supply duct 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 where the refrigeration device is located to obtain fresh air. The second air inlet 616 is connected to the return air duct of the refrigeration device to obtain refrigerated return air. The air outlet 617 is connected to the interior of the compartment 1. The fan 62 is disposed inside the air supply duct 61 and is configured to drive the fresh air and refrigerated return air to form a mixed gas as a humidification source into the compartment 1.

[0053] Refrigeration equipment can be refrigerators, freezers, etc. Compartment 1 can be a fruit and vegetable compartment or other compartments requiring humidity control. Optionally, refer to... Figure 1 and Figure 2The air supply device 6 is located on the rear wall of the compartment 1, that is, on the side wall of the compartment 1 that is close to the back panel 7 of the refrigeration equipment. The air supply device 6 is installed between the back panel 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 or other environments that are relatively comfortable for people. Therefore, the temperature and humidity of the fresh air are higher than those in room 1. The water vapor in the fresh air can be used as the source of moisture for humidification of room 1.

[0055] The inventors discovered that on the enthalpy-humidity chart, the mixing process of fresh air with high temperature and humidity and refrigerated return air with low temperature and humidity can be represented as a straight line. The section of the straight line corresponding to the refrigeration temperature range of compartment 1 is slightly above the saturated humidity curve, indicating that within this temperature range, after the fresh air and refrigerated return air form a mixed gas in a certain proportion, it can not only humidify compartment 1, but also have a small impact on the temperature of compartment 1.

[0056] 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 return air from the refrigeration equipment can be mixed with the fresh air, thus taking into account both humidification and temperature control needs.

[0057] The mixing process of fresh air and refrigerated return air satisfies the law of conservation of energy and the law of conservation of water vapor mass.

[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 V represents the density of fresh air. 外 c represents the volume of fresh air.p外 T represents the specific heat capacity of fresh air. 外 ρ represents the temperature of the fresh air. 冷冻 V represents the density of the refrigeration return air. 冷冻 c represents the volume of the refrigeration return air. p冷冻 T represents the specific heat capacity of the refrigeration return air. 冷冻 ρ represents the temperature of the refrigeration return air. 总 V represents the density of the gas mixture. 总 c represents the volume of the gas mixture. p总 T represents the specific heat capacity of a gas mixture. 总 This indicates the temperature of the gas mixture.

[0061] In formula (2), RH 外 P represents the relative humidity of fresh air. 饱外 ρ represents the saturated vapor pressure of fresh air. 外 V represents the density of fresh air. 外 Indicates the volume of fresh air, RH 冷冻 P represents the relative humidity of the refrigeration return air. 饱冷冻 ρ represents the saturated vapor pressure of the refrigeration return air. 冷冻 V represents the density of the refrigeration return air. 冷冻 Indicates the volume of refrigeration return air, RH 总 P represents the relative humidity of a gas mixture. 饱总 ρ represents the saturated vapor pressure of the gas mixture. 总 V represents the density of the gas mixture. 总 The volume of the gas mixture is expressed in m. 冷凝 This indicates the mass of condensate produced during the mixing of fresh air and refrigerated return air.

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

[0063] Optionally, refer to Figure 2The air supply duct 61 includes a ventilation cover 611 and a first ventilation cylinder 612. The ventilation cover 611 is installed on the back panel 7 of the refrigeration equipment. The ventilation cover 611 includes an end cap and a cylindrical portion. The end cap is located at one axial end of the cylindrical portion, and its outer diameter is larger than that of the cylindrical portion, forming a first flange relative to the cylindrical portion. A first air inlet 615 is located on the end cap and is a through hole. The first ventilation cylinder 612 includes a first cylindrical section and a second cylindrical section arranged along its own axial direction. A second flange protrudes radially inward toward the first ventilation cylinder 612 between the first and second cylindrical sections. The cylindrical portion is clearance-fitted with the first cylindrical section, and the end of the cylindrical portion near the second flange forms a gap with the second flange. This gap is the second air inlet 616, which communicates with the return air duct of the refrigeration equipment through the gap between the cylindrical portion and the first cylindrical section. By using ventilation covers 611 and first ventilation cylinders 612 of different sizes, the mixing ratio of fresh air and refrigerated return air can be adjusted.

[0064] In the refrigeration equipment provided in the embodiments of this disclosure, when the fan 62 is started, fresh air and refrigerated return air enter the air supply channel 61 through the first air inlet 615 and the second air inlet 616 respectively. Under the wind pressure generated by the fan 62, they enter the air supply channel 61. Under the disturbance of the fan 62, the fresh air and refrigerated return air can be pre-mixed. During the mixing process, the fresh air and 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 to passive humidity control technology, in the humidification method of the embodiments of this 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 dehydration of fruits and vegetables.

[0066] Compared to ultrasonic humidification technology, in the humidification method of the embodiments of this disclosure, the humidification source is a mixture of fresh air and refrigerated return air, which is less likely to form condensation on the surface of the object.

[0067] Compared to volatile humidification technology, in the humidification method of the embodiments of this disclosure, when the fan 62 is started, the air supply device 6 can continuously and stably provide mixed gas to the chamber 1 without considering the issue of water replenishment, and therefore no additional operation is required from the user.

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

[0069] The following is combined with Figures 1 to 3 The structure of the refrigeration equipment according to some embodiments of the present disclosure will be further described.

[0070] In some embodiments, reference Figure 2The air supply duct 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 installed 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 collection tank 618 is provided on the second channel section 61B, which is configured to store water required to keep the mixed gas moist.

[0072] In the above embodiments, when fresh air and 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 refrigerated return air can be initially mixed in the first channel section 61A, and heat and water vapor exchange can be initially carried out. Then, under the disturbance of the fan 62, heat and water vapor exchange can be further carried out, thus further improving the uniformity of 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 airflow direction, and a porous adsorption component is provided in the third channel section 61C.

[0074] The porous adsorption component may include the porous adsorption material itself, such as activated carbon or other adsorption materials capable of adsorbing impurities in a gas mixture, or it may include the porous adsorption material and a container filled with the porous adsorption material, the container having multiple vent holes. Optionally, refer to... Figure 2 and Figure 3 The porous adsorption component includes an adsorption material box 614, and the adsorption material box 614 has evenly arranged ventilation holes on both the end face near the chamber 1 and the end face away from the chamber 1.

[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 set 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, so that the fresh air and the refrigerated return air can be mixed more fully, thereby making the heat exchange and water vapor exchange between the two more complete. The temperature, humidity and wind speed of the mixed gas entering the chamber 1 are more uniform, improving the temperature and humidity control effect.

[0076] In some embodiments, the air supply duct 61 is provided with a drain outlet 619, and the refrigeration equipment includes a drain pipe 8, which is correspondingly disposed below the third channel section 61C and configured to collect condensate generated in the third channel section 61C.

[0077] Optionally, refer to Figure 2The porous adsorption component includes an adsorption material box 614, the lower part of which has an opening communicating with a drain outlet 619.

[0078] As the temperature of the mixed gas gradually decreases when it passes through the porous adsorption component, condensation is easily formed. By setting up the drain outlet 619 and the drain pipe 8, the condensate can be discharged in time, reducing the risk of condensate entering the chamber 1 and thus reducing the risk of fruits, vegetables and other items in the chamber 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 arranged sequentially 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 disposed in the second channel section 61B, and the third channel section 61C is provided with a porous adsorption component.

[0080] In the above embodiment, the fresh air and the refrigerated return air are initially mixed in the first channel section 61A, then further mixed in the second channel section 61B, and finally, under the action of the third channel section 61C, the fresh air and the refrigerated return air are not only mixed more thoroughly, but impurities in the mixed gas can also 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 fresh air and 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 gas diffusion process. Therefore, the temperature of the compartment 1 can be minimally affected while maintaining the humidification effect.

[0081] The air supply duct 61 mentioned above includes multiple duct segments, which can be installed as a single unit or assembled from multiple separately installed components. Optionally, refer to... Figure 2 and Figure 3 The air supply duct 61 includes a ventilation cover 611, a first ventilation duct 612, a second ventilation duct 613, and an adsorption material box 614. Optionally, refer to Figure 2 The portion of the first ventilation duct 612 that is fitted with the ventilation cover 611 forms a fitting section. The downstream portion of the fitting section in the first ventilation duct 612 along the airflow direction forms a first channel section 61A. The position in the second ventilation duct 613 corresponding to the fan 62 forms a second channel section 61B. 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 element 63 disposed on at least a portion of the outer periphery of the air supply channel 61 and configured to heat the mixed gas within the air supply channel 61.

[0083] Optionally, refer to Figure 2 and Figure 3 The first heating element 63 is an aluminum foil heater, which is wrapped around the outer periphery of the second ventilation duct 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 and the humidification rate of the chamber 1 still does not meet the requirements, the first heating component 63 can be activated to turn the moisture in the air supply channel 61 into water vapor as a supplementary humidification source, thereby further improving the humidification rate of the chamber 1.

[0085] In some embodiments, the refrigeration equipment includes a water collection tray and a second heating element. The water collection tray is configured to collect condensate generated by the refrigeration equipment and is located in fluid communication with the return air duct of the refrigeration equipment. The second heating element is disposed on the water collection tray and configured to heat the condensate in the water collection tray.

[0086] The second heating element can be an electric heating element such as a heating wire. The water collection tray is usually set in the interlayer formed by the back panel 7 and the inner liner 9 of the refrigeration equipment. The second air inlet 616 is in fluid communication with the interlayer formed by the back panel 7 and the inner liner 9. The refrigeration return air of the refrigeration equipment can flow in this interlayer, and the water vapor formed by the condensate in the water collection tray can enter the air supply channel 61 with the refrigeration return air.

[0087] In the above embodiments, if the fan 62 has reached its maximum speed or the first heating element 63 has reached its maximum power, and the humidification rate of the chamber 1 still does not meet the requirements, by setting a second heating element, the condensate in the water receiving tray can be turned into water vapor. 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, further improving the humidification rate of the chamber 1.

[0088] It should be noted that the humidity control method of the refrigeration equipment in this embodiment is not completely exclusive with conventional humidity control methods. (Refer to...) Figure 2 Based on the air supply device 6, a humidity control tank 10 and a corresponding third heating component 5 can still be installed in the room 1, wherein the third heating component 5 is installed on the tank wall of the humidity control tank 10.

[0089] In some embodiments, the refrigeration equipment includes a humidity detection device configured to detect the humidity of the compartment 1 in order to control the fan 62 to start or stop based on the humidity of the compartment 1.

[0090] In the above embodiments, the refrigeration equipment can control the fan 62 to start or stop according to the detection results of the humidity detection device, so as to start or stop the humidification process according to the humidity of the chamber 1 and the changes in humidity.

[0091] In some embodiments, reference Figure 1 The refrigeration equipment includes a dehumidifying damper 4 and a humidity detection device. The dehumidifying damper 4 is closable and is installed on the compartment 1. The humidity detection device is configured to detect the humidity of the compartment 1 and control the opening or closing of the dehumidifying damper 4 based on the humidity of the compartment 1.

[0092] In the above embodiments, the refrigeration equipment can not only humidify the compartment 1 through the air supply device 6, but also reduce the humidity of the compartment 1 by opening the dehumidification damper 4 when the humidity of the compartment 1 is too high, so that the humid gas in the compartment 1 flows out of the compartment 1.

[0093] In some embodiments, reference Figure 1 The refrigeration equipment 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.

[0094] The direction and rate at which water vapor passes through the humidity-controlled membrane 21 are determined by the humidity difference between the inside and outside of chamber 1. 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 within chamber 1. In the above embodiment, the humidity-controlled membrane 21 can be linked with other components such as the fan 62, the first heating element 63, the second heating element, and the dehumidifying damper 4 to control the humidity of chamber 1.

[0095] Optionally, in order to keep the oxygen content of compartment 1 within a reasonable range, the refrigeration equipment also includes an oxygen control membrane 22, which is disposed on compartment 1 and configured to allow oxygen to flow from the side with a higher concentration to the side with a lower concentration between the inner and outer sides of compartment 1.

[0096] In some embodiments, the refrigeration equipment includes a refrigeration damper and a temperature detection device. The refrigeration damper is closably disposed on compartment 1 and configured to adjust the communication state between compartment 1 and the air inlet channel of the refrigeration equipment. The temperature detection device is configured to detect the temperature of compartment 1 to control the opening or closing of the refrigeration damper based on the temperature of compartment 1.

[0097] When the mixed gas enters chamber 1 through air outlet 617, the temperature of the mixed gas is usually still slightly higher than the temperature of chamber 1. In the above embodiment, if the humidification process of the mixed gas causes the temperature of chamber 1 to be too high, the temperature of chamber 1 can be reduced by opening the refrigeration damper to allow cooler air to enter chamber 1.

[0098] To measure the humidity and temperature of room 1, refer to Figure 1 The refrigeration equipment includes a temperature and humidity sensor 3 installed in compartment 1. 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 this disclosure also provide a control method for the aforementioned refrigeration equipment, including: if the humidity of the compartment 1 is less than a preset humidity, start the fan 62 so that fresh air and refrigerated return air form a mixed gas and enter the compartment 1.

[0100] Figure 4 In the diagram, RH represents the humidity of room 1. 预设 T represents the preset humidity, and T represents the temperature of room 1. 预设max This indicates the upper limit of the preset temperature range.

[0101] The control method for the refrigeration equipment provided in the embodiments of this disclosure has the advantages of the aforementioned refrigeration equipment.

[0102] In some embodiments, reference Figure 4 The control method also includes: determining the rotational speed of the fan 62 based on the difference between the humidity of the chamber 1 and the preset humidity, as well as the volume of mixed gas required to bring the humidity of the chamber 1 to the preset humidity.

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

[0104] m=ρV-10 3 m / d; (3)

[0105] Where m represents the water content in the gas, in grams, and ρ represents the density of the gas, in grams per cubic meter (g / m³). 3 V represents the gas flow rate, measured in meters (m³). 3 d represents the moisture content of the gas, with units of g / m³. 3 .

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

[0107] m2=ρ2V2-10 3 m2 / d2; (4)

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

[0109] m3=ρ3V1-10 3 m3 / d3; (4)

[0110] Since the mixed gas is introduced into chamber 1, part of the original gas in chamber 1 is discharged outside chamber 1. The water content m1 of the remaining part of the original gas in chamber 1, the volume V1 of chamber 1, the air volume V2 of the mixed gas, and the water content d1 of the original gas in chamber 1 satisfy the following:

[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] V2 can be accurately solved using equations (3), (4), (5) and (6), thereby obtaining the appropriate 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 in room 1 is... RH Less than the target speed v RH目标 Increase the speed of fan 62 until the humidity change rate v in room 1 is reached. RH Achieving the target speed 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 room 1 is... RH Greater than the target speed v RH目标 Reduce the speed of fan 62 until the humidity change rate v in room 1 is reduced. RH Achieving the target speed v RH目标 .

[0116] The control method described in the above embodiment can maintain the rotational speed of the fan 62 at the target speed v. RH The required rotation speed can not only improve the problem of large temperature fluctuations and high temperature in chamber 1 caused by excessively fast fan speed, making it difficult to balance humidification and temperature control requirements, but also improve the problem of low humidification efficiency in chamber 1 caused by excessively slow fan speed.

[0117] In some embodiments, the control method further includes: if the fan 62 has reached its maximum speed and the humidity change rate v RH The target rate v has not yet been reached. RH目标 The first heating element 63 is activated, wherein the first heating element 63 is disposed on 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 chamber 1 meets the requirements. In the above embodiment, if the fan 62 has reached its maximum speed and the humidification rate of chamber 1 still does not meet the requirements, the first heating component 63 can be activated to turn the moisture in the air supply channel 61 into water vapor, which can be used as a supplementary humidification source to further improve the humidification rate of chamber 1.

[0119] In some embodiments, the control method further includes: if the heating power of the first heating element 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 This activates the second heating element, which is mounted on a water receiving tray to heat the condensate in the tray.

[0120] In the above embodiments, if the fan 62 has reached its maximum speed or the first heating element 63 has reached its maximum power, and the humidification rate of the chamber 1 still does not meet the requirements, by setting a second heating element, the condensate in the water receiving tray can be turned into water vapor. 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, further improving the humidification rate of the chamber 1.

[0121] In some embodiments, reference Figure 5 The control method also includes: if the fan 62 has reached its maximum speed and the humidity change rate v RH The target rate v has not yet been reached. RH目标 The second heating element is activated, wherein the second heating element is disposed on the water receiving tray to heat the condensate in the water receiving tray.

[0122] In the above embodiments, if the fan 62 has reached its maximum speed and the humidification rate of the chamber 1 still does not meet the requirements, by setting a second heating component, the condensate in the water receiving tray can be turned into water vapor. 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 and further improve the humidification rate of the chamber 1.

[0123] As a supplementary humidification method, the first heating element 63 and the second heating element can be activated simultaneously or individually. In different embodiments, for the sake of energy consumption and stable humidity change rate, when the second heating element is activated, the first heating element can be stopped or kept activated; when the first heating element 63 is activated, the second heating element can be stopped or kept activated. Furthermore, the power of the first heating element 63 and the second heating element can change with the humidity change rate v of the room 1. RH It changes with the changes.

[0124] The conditions for starting the first heating element 63 can be: 1. The fan 62 has reached its maximum speed, but the humidification rate of chamber 1 still does not meet the requirements; 2. The fan 62 has reached its maximum speed, and the power of the second heating element has reached its maximum power, but the humidification rate of chamber 1 still does not meet the requirements. The conditions for starting the second heating element can also be: 1. The fan 62 has reached its maximum speed, but the humidification rate of chamber 1 still does not meet the requirements; 2. The fan 62 has reached its maximum speed, and the power of the first heating element 63 has reached its maximum power, but the humidification rate of chamber 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 the 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 compartment 1. In the above embodiment, if the humidification process of the mixed gas causes the temperature of compartment 1 to be too high, the temperature of compartment 1 can be reduced by opening the refrigeration damper to allow cooler air to enter compartment 1.

[0127] In some embodiments, the control method further includes: if the humidity of the chamber 1 is greater than the preset humidity, opening the dehumidifying damper 4 installed on the chamber 1 so that the gas in the chamber 1 flows out of the chamber 1 through the dehumidifying damper 4.

[0128] In the above embodiments, reference is made to Figure 5 The refrigeration equipment can not only humidify the compartment 1 through the air supply device 6, but also reduce the humidity of the compartment 1 by opening the dehumidification damper 4 when the humidity of the compartment 1 is too high.

[0129] In the above embodiments, the dehumidification process of the refrigeration equipment can be achieved based on the linkage between 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 operating. Considering that the humidity of the compartment 1 is usually also 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 through the humidity control membrane 21, thereby further improving the dehumidification rate.

[0130] It should be noted that, depending on the actual situation, the preset temperature and preset humidity mentioned above can be a single numerical point or a range of values. For example, when determining whether the fan 62 should start, the preset humidity can be a range of values, and the condition for the fan 62 to start can be that the humidity of room 1 is less than the lower limit of that range. However, when determining the speed of the fan 62, for ease of calculation, the preset humidity can be a single numerical point.

[0131] In some embodiments, the control method described above can be implemented based on a controller and a corresponding read / write 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 suitable combination thereof for performing the functions described herein.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A cold appliance, characterized in The application relates to a refrigeration device, comprising: a chamber (1) configured to store cold-stored articles; and an air supply device (6) comprising an air supply channel (61) and a fan (62), the air supply channel (61) having a first air inlet (615) for communicating with an external environment of the refrigeration device to obtain fresh air, a second air inlet (616) for communicating with a return air channel of the refrigeration device to obtain cold return air, and an air outlet (617) for communicating with an interior of the chamber (1), and the fan (62) being arranged in the air supply channel (61) and configured to drive the fresh air and the cold return air to form mixed air as a humidification source into the chamber (1).

2. The refrigeration appliance of claim 1, wherein, The air supply channel (61) has 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) in the air flow direction, the first air inlet (615) and the second air inlet (616) being communicated at an upstream end of the first channel section (61A) in the air flow direction, and the fan (62) being arranged in the second channel section (61B).

3. The refrigeration appliance of claim 1, wherein, The air supply channel (61) has a second channel section (61B) and a third channel section (61C), the third channel section (61C) being located downstream of the second channel section (61B) in the air flow direction, and the third channel section (61C) being provided with a porous adsorption component.

4. The cold appliance of claim 3, characterized in that The air supply channel (61) is provided with a water outlet (619), and the refrigeration device comprises a drain pipe (8) arranged below the third channel section (61C) and configured to collect condensed water generated by the third channel section (61C).

5. The refrigeration appliance of claim 1, wherein, The air supply channel (61) comprises a first channel section (61A), a second channel section (61B) and a third channel section (61C) arranged in sequence in the air flow direction, the first air inlet (615) and the second air inlet (616) being communicated at an upstream end of the first channel section (61A) in the air flow direction, the fan (62) being arranged in the second channel section (61B), and the third channel section (61C) being provided with a porous adsorption component.

6. The refrigeration appliance of claim 1, wherein, The air supply device (6) comprises a first heating component (63) arranged at least at a part of the outer periphery of the air supply channel (61) and configured to heat the mixed air in the air supply channel (61).

7. The refrigeration appliance of claim 1, wherein, The application further relates to a refrigeration device, comprising a water collecting tray configured to collect condensed water generated by the refrigeration device, the water collecting tray being arranged at a position in fluid communication with a return air channel of the refrigeration device, and a second heating component arranged in the water collecting tray and configured to heat the condensed water in the water collecting tray.

8. The refrigeration appliance of claim 1, wherein, The application further relates to a refrigeration device, comprising a humidity control film (21) arranged on the chamber (1) and configured to make water vapor flow from a side with higher humidity to a side with lower humidity between an inner side and an outer side of the chamber (1).

9. The refrigeration appliance of any of claims 1-8, wherein, The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1).

10. The refrigeration appliance of any of claims 1-8, wherein, The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1).

11. The refrigeration appliance of any of claims 1-8, wherein, The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1).

12. A control method of the cold storage device according to any one of claims 1 to 11, characterized by, The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1).

13. The control method of a refrigerating appliance according to claim 12, characterized in that, The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1).

14. The control method of a refrigerating appliance according to claim 12, characterized in that, The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). After the fan (62) is started, if the humidity change rate v RH of the chamber (1) is less than a target rate v RH目标 , the rotation speed of the fan (62) is increased until the humidity change rate v RH of the chamber (1) reaches the target rate v RH目标 ; and / or After the fan (62) is started, if the humidity change rate v RH of the chamber (1) is greater than a target rate v RH目标 , the rotation speed of the fan (62) is reduced until the humidity change rate v RH of the chamber (1) reaches the target rate v RH目标 . The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The control method further comprises: if the rotation speed of the fan (62) has reached a maximum rotation speed, and the humidity change rate v RH has not yet reached the target rate v RH目标 , starting the first heating component (63) to heat the mixed gas in the air supply channel (61). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The control method further comprises: if the heating power of the first heating component (63) has reached a maximum heating power, and the humidity change rate v RH has not yet reached the target rate v RH目标 , causing the second heating component to start to heat the condensed water in the water pan. The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The control method further comprises: if the rotational speed of the fan (62) has reached a maximum rotational speed, and the humidity change rate v RH has not yet reached the target rate v RH目标 causing the second heating component to be activated to heat the condensed water in the water pan. 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The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the chamber (1). The humidity detection device is configured to detect the humidity of the chamber (1) to control the start or stop of the fan (62) according to the humidity of the 19. The control method of a refrigerating appliance according to any one of claims 12 to 18, characterized in that, the refrigerating appliance comprises a dehumidification air door (4) which is provided on the compartment (1) in an openable and closable manner; if the humidity of the compartment (1) is greater than a predetermined humidity, the dehumidification air door (4) is opened so that the gas in the compartment (1) flows out of the compartment (1) through the dehumidification air door (4).

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