Refrigeration equipment and its control method

Abstract

The present disclosure provides a refrigeration device and a control method therefor. The refrigeration device includes: a freezing evaporator; a air supply passage provided with a first air supply opening and a second air supply opening; a blower; a refrigerating chamber connected to the first air supply opening and obtaining cold air from the air supply passage through the first air supply opening; a temperature and humidity control chamber provided with a first air inlet and a second air inlet, the first air inlet being connected to the refrigerating chamber, the second air inlet being connected to the second air supply opening, the temperature and humidity control chamber obtaining cold air from the refrigerating chamber through the first air inlet and obtaining cold air from the air supply passage through the second air inlet; and an air inlet adjustment device configured to selectively open or close at least one of the first air supply opening, the second air supply opening, the first air inlet, and the second air inlet. The control method includes: determining the open / closed state of at least one of the first air supply opening, the second air supply opening, the first air inlet, and the second air inlet according to the target temperature and target humidity of the temperature and humidity control chamber until the temperature and humidity control chamber reaches the target temperature and target humidity.

Description

Technical Field

[0001] The present disclosure relates to the field of refrigeration equipment, and particularly to a refrigeration equipment and a control method thereof. Background Art

[0002] Ordinary refrigerators generally have a refrigerating compartment, a variable-temperature compartment, and a freezing compartment, and rely on a single freezing evaporator to control the temperature of each compartment. Among them, the freezing fan and the evaporator cooperate to cool the freezing compartment to reach the freezing temperature (such as -18 °C), a refrigerating air damper is set, and the refrigerating temperature (such as 4 °C) is controlled by opening and closing the refrigerating air damper. The advantage of this control method is relatively economical and low in cost, but the problem is that the evaporation temperature of the freezing evaporator must be lower than -20 °C to maintain the freezing temperature, and the outlet air temperature of the refrigerating compartment is often around -15 °C. When storing fruits, vegetables and other food materials in the refrigerating compartment, since the outlet air temperature is much lower than the dew point temperature of the refrigerating compartment, it will have a dehumidifying effect on the fruits and vegetables, resulting in wilting and water loss of the fruits and vegetables, and the fresh-keeping effect is not good. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a refrigeration equipment and a control method thereof, which can realize different temperature and humidity control requirements by relying on a single freezing evaporator.

[0004] The first aspect of the present disclosure provides a refrigeration equipment, including:

[0005] A freezing evaporator configured to generate cold that keeps items in a frozen state;

[0006] An air supply channel provided with a first air supply outlet and a second air supply outlet;

[0007] A fan configured to convey cold air with the cold generated by the freezing evaporator to the air supply channel;

[0008] A refrigerating compartment, the refrigerating compartment is connected to the first air supply outlet, and the refrigerating compartment obtains cold air from the air supply channel through the first air supply outlet;

[0009] A temperature and humidity control chamber provided with a first air inlet and a second air inlet, the first air inlet is connected to the refrigerating compartment, the second air inlet is connected to the second air supply outlet, and the temperature and humidity control chamber obtains cold air from the refrigerating compartment through the first air inlet and obtains cold air from the air supply channel through the second air inlet; and

[0010] An air inlet adjusting device configured to selectively open or close at least one of the first air supply outlet, the second air supply outlet, the first air inlet and the second air inlet.

[0011] According to some embodiments of the present disclosure, the air volume of at least one of the first air supply outlet, the second air supply outlet, the first air inlet and the second air inlet is adjustable.

[0012] According to some embodiments of the present disclosure, the air inlet regulating device includes:

[0013] A humidity retaining air damper, disposed at the first air inlet and configured to control the opening or closing of the first air inlet; and / or

[0014] A first refrigerating air damper, disposed at the first air outlet and configured to control the opening or closing of the first air outlet; and / or

[0015] A second refrigerating air damper, disposed at the second air outlet and configured to control the opening or closing of the second air inlet.

[0016] According to some embodiments of the present disclosure, it further includes:

[0017] A temperature and humidity information acquisition device, configured to acquire temperature and humidity information, where the temperature and humidity information includes the target temperature and target humidity of the temperature and humidity control chamber; and

[0018] A control device, communicatively connected to the air inlet regulating device and the temperature and humidity information acquisition device, and configured to determine the on / off state of at least one of the first air outlet, the second air outlet, the first air inlet, and the second air inlet according to the target temperature and the target humidity.

[0019] According to some embodiments of the present disclosure, it further includes a fan, and the fan is configured to make cold air flow from the refrigerating chamber to the temperature and humidity control chamber.

[0020] According to some embodiments of the present disclosure, the temperature and humidity information acquisition device includes:

[0021] A human-computer interaction device, configured to acquire the target temperature and the target humidity of the temperature and humidity control chamber set by a user; and / or

[0022] A visual recognition device, configured to acquire visual information of the types of items stored in the temperature and humidity control chamber, and acquire the target temperature and the target humidity of the temperature and humidity control chamber according to the visual information.

[0023] According to some embodiments of the present disclosure, it further includes a heating device disposed in the temperature and humidity control chamber, and the heating device is configured to heat the gas in the temperature and humidity control chamber.

[0024] A second aspect of the present disclosure provides a control method for the refrigeration device according to the first aspect of the present disclosure, including: determining the on / off state of at least one of the first air outlet, the second air outlet, the first air inlet, and the second air inlet according to the target temperature and the target humidity of the temperature and humidity control chamber until the temperature and humidity control chamber reaches the target temperature and the target humidity.

[0025] According to some embodiments of the present disclosure, if the target temperature is greater than the first preset temperature and the target humidity is greater than the first preset humidity, or, if the target temperature is less than the second preset temperature and the target humidity is greater than the second preset humidity,

[0026] Keep the first air supply opening in an open state until the refrigerating chamber reaches a preset refrigerating temperature, and the preset refrigerating temperature is greater than the dew point temperature corresponding to the target temperature and the target humidity;

[0027] Keep the first air inlet opening in an open state and keep the second air inlet opening in a closed state until the temperature and humidity control chamber reaches the target temperature and the target humidity.

[0028] According to some embodiments of the present disclosure, if the real-time temperature of the refrigerating chamber decreases and the difference between the real-time temperature of the refrigerating chamber and the preset refrigerating temperature is less than the first preset difference, reduce the air supply volume of the first air supply opening.

[0029] According to some embodiments of the present disclosure, after the real-time temperature of the temperature and humidity control chamber reaches the target temperature, keep the first air inlet opening in a closed state, or, make the first air inlet opening periodically switch between an open state and a closed state, wherein when the first air inlet opening periodically switches between a closed state and an open state, the opening degree of the first air inlet opening is less than the first preset opening degree.

[0030] According to some embodiments of the present disclosure, if the target temperature is greater than the third preset temperature and the target humidity is less than the third preset humidity,

[0031] Keep the second air supply opening and the second air inlet opening in an open state, and after the temperature and humidity control chamber reaches the target temperature, make the second air inlet opening periodically switch between a closed state and an open state until the temperature and humidity control chamber reaches the target humidity.

[0032] According to some embodiments of the present disclosure, when the second air inlet opening periodically switches between a closed state and an open state, the opening degree of the second air inlet opening is less than the second preset opening degree.

[0033] According to some embodiments of the present disclosure, if the target temperature is less than the fourth preset temperature and the target humidity is less than the fourth preset humidity,

[0034] Keep the second air supply opening and the second air inlet opening in an open state until the temperature and humidity control chamber reaches the target temperature and the target humidity.

[0035] According to some embodiments of the present disclosure, it further includes:

[0036] Obtain the initial humidity of the temperature and humidity control chamber;

[0037] If the initial humidity is greater than the target humidity, keep the second air outlet and the second air inlet open until the temperature and humidity control chamber reaches the target temperature and the target humidity.

[0038] According to some embodiments of the present disclosure, it further includes:

[0039] Obtain the initial humidity of the temperature and humidity control chamber;

[0040] If the initial humidity is less than the target humidity, the control method includes:

[0041] Raise the temperature of the temperature and humidity control chamber;

[0042] Keep the first air outlet open until the refrigerating chamber reaches a preset refrigerating temperature, and the preset refrigerating temperature is greater than the dew point temperature corresponding to the target temperature and the target humidity;

[0043] Keep the first air inlet open and keep the second air inlet closed until the temperature and humidity control chamber reaches the target temperature and the target humidity.

[0044] According to some embodiments of the present disclosure, raising the temperature of the temperature and humidity control chamber includes:

[0045] Keep both the first air inlet and the second air inlet closed; and / or

[0046] Heat the gas in the temperature and humidity control chamber.

[0047] According to some embodiments of the present disclosure, if the real-time humidity of the temperature and humidity control chamber is greater than the target humidity after the temperature of the temperature and humidity control chamber is raised, keep the second air outlet and the second air inlet open.

[0048] According to some embodiments of the present disclosure,

[0049] Obtain the target temperature and the target humidity of multiple temperature and humidity control chambers;

[0050] For each temperature and humidity control chamber with the target humidity less than the fifth preset humidity, keep the second air outlet and the second air inlet open until the temperature and humidity control chamber reaches the target temperature and the target humidity;

[0051] For each of the temperature and humidity control chambers where the target humidity is greater than the sixth preset humidity, a plurality of corresponding preset refrigeration temperatures are determined in the order from high to low of the dew point temperatures corresponding to the target temperature and the target humidity of the temperature and humidity control chamber. Each of the preset refrigeration temperatures is greater than the corresponding dew point temperature. The first air supply opening is kept open to cool the refrigeration chamber to each of the preset refrigeration temperatures in sequence, and the first air inlet of the temperature and humidity control chamber that has not reached the target temperature is kept open until each of the temperature and humidity control chambers reaches the target temperature and the target humidity.

[0052] According to some embodiments of the present disclosure, if the temperature and humidity control chamber is heated again after reaching the target temperature and the target humidity, the first air inlet is kept open, and the opening degree of the first air inlet is less than the third preset opening degree.

[0053] In the refrigeration device provided by the embodiments of the present disclosure, the air inlet adjustment device can change the way the temperature and humidity control chamber obtains cold air by selectively opening or closing at least one of the first air supply opening, the second air supply opening, the first air inlet, and the second air inlet. When the temperature and humidity control chamber has a humidity preservation requirement, the first air supply opening is opened, and the refrigeration chamber can obtain the cold air conveyed by the blower from the air supply passage and maintain a certain refrigeration temperature. When the first air inlet is opened, the temperature and humidity control chamber can obtain the relatively warm cold air from the refrigeration chamber, avoiding the dehumidification effect on the gas in the temperature and humidity control chamber. When the temperature and humidity control chamber has a dehumidification requirement, the second air supply opening and the second air inlet can be opened, and the temperature and humidity control chamber can directly obtain the relatively cold cold air from the air supply passage. Thus, the refrigeration device provided by the embodiments of the present disclosure only needs to rely on a single refrigeration evaporator to meet the requirements of freezing, refrigeration, temperature control, humidity control, etc., reducing the complexity of the refrigeration system and being conducive to cost reduction. The control method of the refrigeration device provided by the embodiments of the present disclosure has the advantages of the aforementioned refrigeration device.

[0054] Other features and advantages of the present disclosure will become clear through the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings described herein are used to provide a further understanding of the present disclosure and form a part of this application. The schematic embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0056] Figure 1 It is a schematic diagram of the humidity control principle of the refrigeration device according to some embodiments of the present disclosure.

[0057] Figure 2 It is a front structural schematic diagram of the refrigeration device according to some embodiments of the present disclosure.

[0058] Figure 3 The Figure 2 schematic diagram of the back structure of the refrigeration device shown.

[0059] Figure 4 The Figure 2 schematic diagram of another front structure of the refrigeration device shown, in which the temperature and humidity control chamber is not shown.

[0060] Figure 5 and Figure 6 The Figure 2 schematic diagram of the structure of the temperature and humidity control chamber of the refrigeration device shown.

[0061] Figures 1 to 6 In

[0062] 1. Freezer;

[0063] 2. Refrigerating chamber; 20. Return air inlet of the refrigerating chamber;

[0064] 3. Air supply channel; 31. First refrigerating air damper; 32. Second refrigerating air damper; 33. First air supply outlet; 34. Second air supply outlet;

[0065] 4. Refrigeration device; 41. Freezing evaporator; 42. Fan;

[0066] 5. Temperature and humidity control chamber; 50. Drawer frame; 51. First air inlet; 52. Second air inlet; 53. Humidity control air damper; 54. Fan; 55. Motor;

[0067] 6. Heating device. Specific embodiments

[0068] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0069] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, these technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the convenience of differentiating the corresponding components. Without otherwise stating, these terms have no special meanings and thus should not be construed as limiting the scope of the present disclosure.

[0071] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. These are merely for the convenience of describing the present disclosure and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present disclosure; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0072] Figure 1 The curve of shows the relationship between the moisture content of humid air and the dew point temperature T 露点 at a certain pressure. Let T 蒸发 represent the cold air temperature provided by the refrigeration evaporator. When T 蒸发 >T 露点 , the cold air has a moisturizing effect on the temperature-controlled area during refrigeration; when T 蒸发 <T 露点 , the cold air has a dehumidifying effect on the temperature-controlled area during refrigeration.

[0073] In the related technologies known to the inventors, when using a single refrigeration evaporator to control the temperatures of both the freezing area and the refrigerating area simultaneously, in order to maintain the low temperature of the freezing area, T 蒸发 tends to be relatively low, T 蒸发 <T 露点 , and the refrigerating area is always in a dehumidified state, which will cause the fruits and vegetables in the refrigerating area to lose water faster and become wilted easily.

[0074] To improve the above problems, embodiments of the present disclosure provide a refrigeration device and a control method therefor.

[0075] As Figures 2 to 6 shown, the refrigeration device provided by the embodiments of the present disclosure includes a freezing evaporator 41, a air supply channel 3, a blower 42, a refrigerating chamber 2, a temperature and humidity control chamber 5, and an air inlet regulating device.

[0076] In the embodiments shown in the respective drawings, the refrigeration device may be a refrigerator. In some embodiments not shown, the refrigeration device may also be a freezer or the like.

[0077] The freezing evaporator 41 is configured to generate cooling capacity for keeping items in a frozen state.

[0078] The air supply channel 3 is provided with a first air supply opening 33 and a second air supply opening 34.

[0079] The blower 42 is configured to deliver cold air with the cooling capacity generated by the freezing evaporator 41 to the air supply channel 3.

[0080] The refrigerating chamber 2 is connected to the first air supply opening 33, and the refrigerating chamber 2 obtains cold air from the air supply channel 3 through the first air supply opening 33.

[0081] The temperature and humidity control chamber 5 is provided with a first air inlet 51 and a second air inlet 52. The first air inlet 51 is connected to the refrigerating chamber 2, and the second air inlet 52 is connected to the second air supply opening 34. The temperature and humidity control chamber 5 obtains cold air from the refrigerating chamber 2 through the first air inlet 51 and obtains cold air from the air supply channel 3 through the second air inlet 52.

[0082] The air inlet regulating device is configured to selectively open or close at least one of the first air supply opening 33, the second air supply opening 34, the first air inlet 51, and the second air inlet 52.

[0083] Figures 2 to 4 In the embodiment shown, the refrigeration device further includes a freezing chamber 1 connected to the air supply channel 3. The air supply channel 3 may further include a third air supply opening connected to the freezing chamber 1. The freezing chamber 1 obtains cold air from the air supply channel 3 through the third air supply opening. The air supply channel 3 may be disposed at the back of the freezing chamber 1 and the refrigerating chamber 2 of the refrigeration device, wherein the third air supply opening is disposed upstream of the first air supply opening 33 and the second air supply opening 34. In this way, the blower 42 first delivers part of the cold air through the air supply channel 3 to the freezing chamber 1 to keep the items therein in a frozen state, and then delivers the remaining part of the cold air through the air supply channel 3 to the refrigerating chamber 2 and the temperature and humidity control chamber 5. The first air supply opening 33 may be disposed on the side of the refrigerating chamber 2, and the refrigerating chamber 2 is supplied with air through the first air supply opening 33 and then returns air through a refrigerating chamber air return opening 20 disposed on the back of the refrigerating chamber 2.

[0084] The number of temperature and humidity control chambers 5 can be one or more. For example, Figures 2 to 4 In the illustrated embodiment, there can be 4 temperature and humidity control chambers. When there are multiple temperature and humidity control chambers, by providing a first air inlet, a second air inlet, and an air inlet adjustment device corresponding to each temperature and humidity control chamber 5 one by one, it is possible to independently control whether each temperature and humidity control chamber 5 obtains cold air and the way of obtaining cold air, so that different temperature and humidity control chambers 5 can be at different temperatures and humidities, meeting the diverse storage requirements of food ingredients or other items.

[0085] As Figures 2 to 6 In the illustrated embodiment, the temperature and humidity control chambers 5 can be provided at the bottom of the refrigerating chamber 2. The temperature and humidity control chamber 5 includes a drawer frame 50 and a drawer slidably disposed within the drawer frame 50. Among them, the first air inlet 51 is provided at the top of the drawer frame 50, and the second air inlet 52 is provided on the back of the drawer frame 50 and is docked with the second air supply port 34. The drawer frames 50 can correspond to the drawers one by one, or multiple chambers can be separated by partitions within one drawer frame 50, and each drawer is slidably disposed within one of the chambers. Since there are installation gaps between the drawer frame 50 and the drawer of the temperature and humidity control chamber 5, between multiple drawer frames 50, and between the drawer frame 50 and the inner wall of the refrigerating chamber 2, the temperature and humidity control chamber 5 can return air through the above installation gaps via the refrigerating chamber 2. Of course, the aforementioned temperature and humidity control chamber 5 is not limited to the above drawer-type structural form.

[0086] In the refrigeration device provided by the embodiments of the present disclosure, the air inlet adjustment device can change the way the temperature and humidity control chamber obtains cold air by selectively opening or closing at least one of the first air supply port, the second air supply port, the first air inlet, and the second air inlet. When the temperature and humidity control chamber has a humidity preservation requirement, the first air supply port is opened, and the refrigerating chamber can obtain the cold air conveyed by the blower from the air supply channel and maintain a certain refrigeration temperature. When the first air inlet is opened, the temperature and humidity control chamber can obtain relatively warm cold air from the refrigerating chamber, avoiding dehumidifying the gas inside the temperature and humidity control chamber; when the temperature and humidity control chamber has a dehumidification requirement, the second air supply port and the second air inlet can be opened, and the temperature and humidity control chamber can directly obtain relatively cold cold air from the air supply channel. Thus, the refrigeration device provided by the embodiments of the present disclosure can meet the requirements of freezing, refrigerating, temperature control, humidity control, etc. only by relying on a single refrigeration evaporator, reducing the complexity of the refrigeration system and being beneficial to cost reduction.

[0087] In order to enable the temperature and humidity control chamber to meet the adjustment requirements of different temperatures and humidities, in some embodiments, the air volume of at least one of the first air supply port 33, the first air inlet 51, and the second air inlet 52 is adjustable.

[0088] In some embodiments, the air intake regulating device includes at least one of a humidity retaining air damper 53, a first refrigerating air damper 31, and a second refrigerating air damper 32. Among them, the humidity retaining air damper 53 is disposed at the first air intake 51 and is configured to control the opening or closing of the first air intake 51. The first refrigerating air damper 31 is disposed at the first air supply outlet 33 and is configured to control the opening or closing of the first air supply outlet 33. The second refrigerating air damper 32 is disposed at the second air supply outlet 34 and is configured to control the opening or closing of the second air intake 52.

[0089] In the above embodiments, the humidity retaining air damper 53, the first refrigerating air damper 31, and the second refrigerating air damper 32 can all be set to have adjustable opening degrees. Each air damper can be driven by a driving device such as a motor. Accordingly, the air volumes of the first air supply outlet 33, the first air intake 51, and the second air intake 52 can be adjusted. The switching states and opening degrees of the air dampers of different temperature and humidity control chambers 5 can all be independently controlled.

[0090] In some embodiments, the refrigeration device further includes a fan 54, and the fan 54 is configured to make the cold air flow from the refrigerating chamber 2 to the temperature and humidity control chamber 5.

[0091] Figure 5 and Figure 6 In the embodiment shown, the fan 54 can be disposed at a position in the temperature and humidity control chamber 5 near the first air intake 51 as a suction fan. The fan can also be disposed at other positions in the refrigeration device where the cold air can flow from the refrigerating chamber 2 to the temperature and humidity control chamber 5. Arranging the fan 54 not only facilitates the temperature and humidity control chamber 5 to obtain cold air from the refrigerating chamber 2, but also can adjust the rate of the introduced cold air by changing the rotation speed of the fan 54.

[0092] In some embodiments, the refrigeration device further includes a temperature and humidity information acquisition device and a control device. The temperature and humidity information acquisition device is configured to acquire temperature and humidity information, and the temperature and humidity information includes the target temperature and target humidity of the temperature and humidity control chamber 5. The control device is communicatively connected to the air intake regulating device and the temperature and humidity information acquisition device, and is configured to determine the switching state of at least one of the first air supply outlet 33, the second air supply outlet 34, the first air intake 51, and the second air intake 52 according to the target temperature and target humidity.

[0093] In the present disclosure, the target humidity can be expressed by relative humidity and absolute humidity, as long as the corresponding dew point temperature can be obtained therefrom.

[0094] In some embodiments, the temperature and humidity information acquisition device includes a human-machine interaction device, which is configured to acquire the target temperature and target humidity of the temperature and humidity control chamber 5 set by the user.

[0095] The human-machine interaction device can be a display screen with a human-machine interaction interface disposed on the panel of the refrigeration device, etc.

[0096] In some other embodiments, the temperature and humidity information acquisition device includes a visual recognition device configured to acquire visual information about the types of items stored in the temperature and humidity control chamber 5, and to obtain the target temperature and target humidity of the temperature and humidity control chamber 5 based on the visual information.

[0097] For example, the visual recognition device can be used to distinguish and identify whether the items placed in the temperature and humidity control chamber are ingredients with moisture retention requirements such as fruits and vegetables, so as to determine the target temperature and target humidity of the temperature and humidity control chamber 5. In the above embodiments, the visual recognition device can be a camera or the like.

[0098] Of course, the temperature and humidity information acquisition device can also include a human-computer interaction device and a visual recognition device at the same time.

[0099] In some embodiments, the temperature and humidity information acquisition device may further include a temperature detection device and a humidity detection device disposed in the temperature and humidity control chamber 5. Correspondingly, the temperature and humidity information may further include the real-time temperature and real-time humidity of the temperature and humidity control chamber 5.

[0100] In some embodiments, the refrigeration device further includes a heating device 6 disposed in the temperature and humidity control chamber 5, and the heating device 6 is configured to heat the gas in the temperature and humidity control chamber 5.

[0101] Figure 5 and Figure 6 In the illustrated embodiment, the heating device 6 can be an aluminum foil heater disposed on the inner wall of the temperature and humidity control chamber 5.

[0102] The control method of the refrigeration device provided by the embodiments of the present disclosure includes: determining the on / off state of at least one of the first air outlet 33, the second air outlet 34, the first air inlet 51, and the second air inlet 52 according to the target temperature and target humidity of the temperature and humidity control chamber 5 until the temperature and humidity control chamber 5 reaches the target temperature and target humidity.

[0103] The control method of this refrigeration device has the advantages of the aforementioned refrigeration device.

[0104] The following further describes the manner in which the temperature and humidity control chamber obtains cold air under different temperature and humidity requirements to achieve the purpose of temperature and humidity control.

[0105] Since the freezing evaporator 41 must provide cold air to keep the items in a frozen state, the evaporation temperature is low, resulting in too low an air outlet temperature, which is likely to produce a dehumidification effect and is not conducive to moisture retention.

[0106] To improve the above problems, in some embodiments, if the target temperature is greater than the first preset temperature and the target humidity is greater than the first preset humidity, or if the target temperature is less than the second preset temperature and the target humidity is greater than the second preset humidity, the first air outlet 33 is kept open until the refrigerating chamber 2 reaches the preset refrigerating temperature, and the preset refrigerating temperature is greater than the dew point temperature corresponding to the target temperature and the target humidity; the first air inlet 51 is kept open, and the second air inlet 52 is kept closed until the temperature and humidity control chamber 5 reaches the target temperature and the target humidity.

[0107] The target temperature being greater than the first preset temperature and the target humidity being greater than the first preset humidity can be used to indicate that the refrigeration device determines that the required state of the temperature and humidity control chamber is a high-temperature and high-humidity state; the target temperature being less than the second preset temperature and the target humidity being greater than the second preset humidity can be used to indicate that the refrigeration device determines that the required state of the temperature and humidity control chamber is a low-temperature and high-humidity state.

[0108] When a high-temperature and high-humidity state is required (such as a target temperature of 8 °C and a target humidity of 90%, and the corresponding dew point temperature is 6.54 °C at this time), the preset refrigerating temperature of the refrigerating chamber 2 can be set to a value close to the dew point temperature (such as 6.5 °C, 6.6 °C or 7 °C) first, then the second refrigerating air damper 32 is closed, the first refrigerating air damper 31 is opened, and the cold air cools the refrigerating chamber 2. When the temperature of the refrigerating chamber 2 is maintained at about 6.6 °C, the moisture preservation air damper 53 is opened again, and the fan is started to suck air. At this time, the cold air inhaled by the temperature and humidity control chamber 5 is 6.6 °C, which is higher than the dew point temperature of 6.54 °C and lower than the target temperature of 8 °C, so that cooling can be carried out without dehumidification until the temperature and humidity control chamber 5 reaches the target temperature of 8 °C and the target humidity of 90%.

[0109] When a low-temperature and high-humidity state is required (such as a target temperature of 0 °C and a target humidity of 90%, and the corresponding dew point temperature is -1.22 °C at this time), the preset refrigerating temperature of the refrigerating chamber 2 can be set to -1 °C first, then the moisture preservation air damper 53 is opened, and the cold air at -1 °C is used for cooling and humidity preservation until the temperature and humidity control chamber 5 reaches the target temperature of 0 °C and the target humidity of 90%.

[0110] In some embodiments, if the real-time temperature of the refrigerating chamber 2 drops and the difference between the real-time temperature of the refrigerating chamber 2 and the preset refrigerating temperature is less than the first preset difference, the air supply volume of the first air outlet 33 is reduced.

[0111] In the above embodiments, the real-time temperature of the refrigerating chamber 2 drops and the difference between the real-time temperature of the refrigerating chamber 2 and the preset refrigerating temperature is less than the first preset difference, indicating that the temperature of the refrigerating chamber 2 is close to the preset refrigerating temperature. At this time, the opening degree of the first refrigerating air damper 31 can be reduced to reduce the air supply volume of the first air outlet 33, so as to avoid too large temperature fluctuations in the refrigerating chamber 2 affecting the heat preservation and moisture preservation effects.

[0112] In order to keep the temperature in the temperature and humidity control chamber stable at the target temperature for a long time, in some embodiments, after the real-time temperature of the temperature and humidity control chamber 5 reaches the target temperature, the first air inlet 51 is kept closed, or the first air inlet 51 is periodically switched between the open state and the closed state. When the first air inlet 51 is periodically switched between the closed state and the open state, the opening degree of the first air inlet 51 is less than the first preset opening degree.

[0113] In the above embodiments, based on the requirements of the high-temperature and high-humidity state, the temperature in the temperature and humidity control chamber can be stabilized at the target temperature of 8°C by closing the humidity control damper 53 or making the humidity control damper 53 open and close at a small angle and periodically; based on the requirements of the low-temperature and high-humidity state, when the target temperature reaches 0°C, the temperature in the temperature and humidity control chamber can be stabilized at the target temperature of 0°C by making the humidity control damper 53 open and close periodically.

[0114] In some embodiments, if the target temperature is greater than the third preset temperature and the target humidity is less than the third preset humidity, the second air supply port 34 and the second air inlet 52 are in the open state. After the temperature and humidity control chamber 5 reaches the target temperature, the second air inlet 52 is periodically switched between the closed state and the open state until the temperature and humidity control chamber 5 reaches the target humidity.

[0115] The target temperature being greater than the third preset temperature and the target humidity being less than the third preset humidity can be used to indicate that the refrigeration equipment determines that the required state of the temperature and humidity control chamber is the high-temperature and low-humidity state.

[0116] When a high-temperature and low-humidity state is required (such as a target temperature of 8°C and a target humidity < 30%), the corresponding dew point temperature is immediately obtained for cooling and dehumidification. At this time, since the target temperature is relatively high, after the temperature and humidity control chamber 5 reaches the target temperature, the second refrigeration damper 32 is closed, and then the second refrigeration damper 32 is opened when the temperature rises. In this way, each time the temperature is lowered, dehumidification can be carried out once. After a period of time, the humidity in the temperature and humidity control chamber 5 can reach the low-humidity state.

[0117] In some embodiments, when the second air inlet 52 is periodically switched between the closed state and the open state, the opening degree of the second air inlet 52 is less than the second preset opening degree.

[0118] In the above embodiments, during the process of the second air inlet 52 being periodically switched between the closed state and the open state, when the temperature and humidity control chamber 5 is approaching the target temperature, according to different ambient temperatures, the opening degree of the second refrigeration damper 32 can be set to 1 / 4 or other smaller opening degrees, so as to precisely control the air inflow volume of the second air inlet 52 with a small flow rate.

[0119] In some embodiments, if the target temperature is less than the fourth preset temperature and the target humidity is less than the fourth preset humidity, the second air outlet 34 and the second air inlet 52 are kept open until the temperature and humidity control chamber 5 reaches the target temperature and humidity.

[0120] The target temperature being less than the fourth preset temperature and the target humidity being less than the fourth preset humidity can be used to indicate that the refrigeration device determines that the required state of the temperature and humidity control chamber is a low-temperature and low-humidity state.

[0121] When a low-temperature and low-humidity state is required (such as a target temperature of 0°C and a target humidity < 30%), the corresponding dew point temperature is immediately obtained. At this time, because the requirement is low humidity, that is, rapid dehumidification is required. At this time, the second refrigeration air damper 32 can be directly opened, and the cold air at low temperature directly cools the temperature and humidity control chamber 5, and at the same time, rapid dehumidification can be carried out until the temperature and humidity control chamber 5 reaches the target temperature and humidity.

[0122] In some embodiments, the control method further includes: obtaining the initial humidity of the temperature and humidity control chamber 5; if the initial humidity is greater than the target humidity, the second air outlet 34 and the second air inlet 52 are kept open until the temperature and humidity control chamber 5 reaches the target temperature and humidity.

[0123] The initial humidity being greater than the target humidity can be used to indicate that the temperature and humidity control chamber 5 has a dehumidification requirement.

[0124] For example, when the temperature and humidity control chamber 5 is already in a high-temperature and high-humidity state, if the requirement changes to high-temperature and low-humidity or low-temperature and low-humidity at this time, the second refrigeration air damper 32 can be directly opened to make the second air inlet 52 open and close periodically for rapid dehumidification.

[0125] In some embodiments, the control method further includes: obtaining the initial humidity of the temperature and humidity control chamber 5; if the initial humidity is less than the target humidity, the control method includes: raising the temperature of the temperature and humidity control chamber 5; keeping the first air outlet 33 open until the refrigerating chamber 2 reaches the preset refrigeration temperature, and the preset refrigeration temperature is greater than the dew point temperature corresponding to the target temperature and humidity; keeping the first air inlet 51 open and the second air inlet 52 closed until the temperature and humidity control chamber 5 reaches the target temperature and humidity.

[0126] The initial humidity being less than the target humidity can be used to indicate that the temperature and humidity control chamber 5 has a humidification requirement.

[0127] For example, when the temperature and humidity control chamber 5 is already in a low-temperature and low-humidity state, if the requirement changes to high-temperature and high-humidity or low-temperature and high-humidity, first, the second refrigeration air damper 32 is immediately closed, and the temperature of the temperature and humidity control chamber 5 is waited to rise naturally, or a heating device is used to raise the temperature of the temperature and humidity control chamber 5; then the humidity control is carried out: first, the refrigerating chamber 2 is adjusted to the preset refrigeration temperature, and then the humidity maintaining air damper 53 is opened to control the temperature in the temperature and humidity control chamber 5. Since the high-humidity state cannot be naturally obtained again after the temperature and humidity control chamber 5 is dehumidified, the humidity can be increased by the natural transpiration of fruits and vegetables and other food materials in the temperature and humidity control chamber 5 in this state. The above method will consume a small amount of the moisture of the food materials themselves, but the high-humidity state can be maintained after reaching the high-humidity state, keeping the food materials from losing water continuously, which is beneficial to the preservation of fruits and vegetables and other food materials for a longer time.

[0128] In some embodiments, raising the temperature of the temperature and humidity control chamber 5 includes closing both the first air inlet 51 and the second air inlet 52.

[0129] In other embodiments, raising the temperature of the temperature and humidity control chamber 5 includes heating the gas in the temperature and humidity control chamber 5. The gas in the temperature and humidity control chamber 5 can be heated by the aforementioned heating device 6.

[0130] Of course, the above two methods can also be used simultaneously to raise the temperature of the temperature and humidity control chamber 5 to shorten the time required for heating.

[0131] In some embodiments, if the real-time humidity of the temperature and humidity control chamber 5 is greater than the target humidity after the temperature of the temperature and humidity control chamber 5 is raised, the second air supply port 34 and the second air inlet 52 are opened.

[0132] For example, the second refrigeration air damper 32 can be opened to slightly dehumidify the temperature and humidity control chamber.

[0133] The temperature and humidity of each temperature and humidity control chamber 5 can be independently adjusted according to the above method to achieve full temperature and humidity independent control, or some of the temperature and humidity control chambers 5 can be independently adjusted according to the above method, and the other temperature and humidity control chambers 5 can maintain a certain state (such as being the dry area of the refrigerator).

[0134] In some embodiments, the target temperature and target humidity of multiple temperature and humidity control chambers 5 are obtained; for each temperature and humidity control chamber 5 with a target humidity less than the fifth preset humidity, the second air supply opening 34 and the second air inlet 52 are kept open until the temperature and humidity control chamber 5 reaches the target temperature and target humidity; for each temperature and humidity control chamber 5 with a target humidity greater than the sixth preset humidity, multiple corresponding preset refrigeration temperatures are determined in the order of decreasing dew point temperature corresponding to the target temperature and target humidity of the temperature and humidity control chamber 5, each preset refrigeration temperature being greater than the corresponding dew point temperature, the first air supply opening 33 is kept open to cool the refrigerating chamber 2 to each preset refrigeration temperature in sequence, and the first air inlet 51 of the temperature and humidity control chamber 5 that has not reached the target temperature is kept open until each temperature and humidity control chamber 5 reaches the target temperature and target humidity.

[0135] For example, Figures 2 to 4 In the embodiment shown, when the temperature and humidity control requirements of 4 temperature and humidity control chambers are different and there are requirements simultaneously, the following intelligent control strategy can be adopted: First, the temperature and humidity requirements of the 4 temperature and humidity control chambers are collected in real time, the corresponding dew point temperature is obtained according to the target temperature and target humidity, and then they are sorted according to the dew point temperature. For example, the requirements of the 4 temperature and humidity control chambers are: high temperature, high humidity (target temperature 8°C, target humidity 90%), low temperature, high humidity (target temperature 0°C, target humidity 90%), low temperature, low humidity (target temperature 0°C, target humidity 30%), high temperature, low humidity (target temperature 8°C, target humidity 30%), then the dew point temperatures of the 4 temperature and humidity control chambers can be correspondingly obtained as: 6.54°C, -1.22°C, -13.64°C, -7.39°C.

[0136] For the 2 temperature and humidity control chambers with low humidity requirements, the second refrigeration air damper 32 is directly opened to cool and dehumidify the temperature and humidity control chambers.

[0137] For the other 2 temperature and humidity control chambers with high humidity requirements, the preset refrigeration temperature of the refrigerating chamber 2 is adjusted sequentially according to the dew point temperature. For example, the preset refrigeration temperature is first adjusted to 6.6°C, and the first air inlets of the temperature and humidity control chambers with high temperature, high humidity requirements and low temperature, high humidity requirements are kept open. During the process of cooling and moisturizing the temperature and humidity control chamber with high temperature, high humidity requirements, the temperature and humidity control chamber with low temperature, high humidity requirements is also cooled. When the temperature and humidity control chamber with high temperature, high humidity requirements reaches the control target, the second refrigeration air damper 32 and the moisturizing air damper 53 of this temperature and humidity control chamber are closed, and then the preset refrigeration temperature is adjusted to -1°C to cool the temperature and humidity control chamber with low temperature, high humidity requirements.

[0138] In the above embodiments, when a single refrigeration evaporator is provided and the cold air temperature provided by the fan is constant, and when multiple temperature and humidity control chambers 5 have different temperature and humidity requirements, the dew point temperatures of the temperature and humidity control chambers with different requirements can be sorted from high to low, so as to obtain the temperature control sequence of the temperature and humidity control chambers with high humidity requirements, and it can always be ensured that the temperature of each temperature and humidity control chamber is higher than the corresponding dew point temperature, so that the required humidity can still be maintained during the cooling process of the temperature and humidity control chambers.

[0139] In addition, the more the number of temperature and humidity control chambers and the more the requirements for temperature and humidity control, through the above control method, multiple temperature and humidity control chambers 5 can cool down and maintain humidity in parallel. Compared with controlling one by one, the total time required for all temperature and humidity control chambers to reach the temperature and humidity requirements can be shortened.

[0140] In some embodiments, if the temperature and humidity control chamber 5 is heated again after reaching the target temperature and target humidity, the first air inlet 51 is in an open state, and the opening degree of the first air inlet 51 is less than the third preset opening degree.

[0141] In the above embodiments, if the temperature of the temperature and humidity control chamber with high temperature and high humidity requirements rises again after reaching the control target, the humidity control damper 53 can be opened again with a smaller opening degree. Although the cold air entering from the humidity control damper 53 will cause dehumidification, after being mixed with the air in the temperature and humidity control chamber, the temperature of the temperature and humidity control chamber can still be maintained above 6.54 °C, and the influence on the humidity in the temperature and humidity control chamber is small, and the high temperature and high humidity state can still be maintained.

[0142] In some embodiments, the control device described above 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 in the present disclosure.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit them; although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present disclosure can still be modified or some technical features can be equivalently replaced, and they should all be covered by the scope of the technical solutions claimed in the present disclosure.

Claims

1. A control method for a refrigeration device, characterized in that The refrigeration equipment includes: A freezing evaporator (41) configured to generate cooling capacity for keeping items in a frozen state; An air supply channel (3) provided with a first air supply outlet (33) and a second air supply outlet (34); A blower (42) configured to convey cold air with the cooling capacity generated by the freezing evaporator (41) to the air supply channel (3); A refrigerating chamber (2) connected to the first air supply outlet (33), and the refrigerating chamber (2) obtains cold air from the air supply channel (3) through the first air supply outlet (33); A temperature and humidity control chamber (5) provided with a first air inlet (51) and a second air inlet (52), the first air inlet (51) is connected to the refrigerating chamber (2), the second air inlet (52) is connected to the second air supply outlet (34), and the temperature and humidity control chamber (5) obtains cold air from the refrigerating chamber (2) through the first air inlet (51) and obtains cold air from the air supply channel (3) through the second air inlet (52); and An air inlet adjustment device configured to selectively open or close at least one of the first air supply outlet (33), the second air supply outlet (34), the first air inlet (51), and the second air inlet (52); The control method includes: Determining the on-off state of at least one of the first air supply outlet (33), the second air supply outlet (34), the first air inlet (51), and the second air inlet (52) according to the target temperature and target humidity of the temperature and humidity control chamber (5) until the temperature and humidity control chamber (5) reaches the target temperature and the target humidity; Wherein, If the target temperature is greater than a first preset temperature and the target humidity is greater than a first preset humidity, or, if the target temperature is less than a second preset temperature and the target humidity is greater than a second preset humidity, keep the first air supply outlet (33) in an open state until the refrigerating chamber (2) reaches a preset refrigerating temperature, the preset refrigerating temperature is greater than the dew point temperature corresponding to the target temperature and the target humidity, keep the first air inlet (51) in an open state, and keep the second air inlet (52) in a closed state until the temperature and humidity control chamber (5) reaches the target temperature and the target humidity; and / or If the target temperature is greater than a third preset temperature and the target humidity is less than a third preset humidity, keep the second air supply outlet (34) and the second air inlet (52) in an open state, and after the temperature and humidity control chamber (5) reaches the target temperature, make the second air inlet (52) periodically switch between a closed state and an open state until the temperature and humidity control chamber (5) reaches the target humidity; and / or If the target temperature is less than a fourth preset temperature and the target humidity is less than a fourth preset humidity, keep the second air supply outlet (34) and the second air inlet (52) in an open state until the temperature and humidity control chamber (5) reaches the target temperature and the target humidity.

2. The control method of the refrigeration equipment according to claim 1, characterized in that The air volume of at least one of the first air supply opening (33), the second air supply opening (34), the first air inlet (51), and the second air inlet (52) is adjustable.

3. The control method of the refrigeration equipment according to claim 1, characterized in that, The air inlet regulating device includes: A humidity retaining air damper (53) disposed at the first air inlet (51) and configured to control the opening or closing of the first air inlet (51); and / or A first refrigerating air damper (31) disposed at the first air supply opening (33) and configured to control the opening or closing of the first air supply opening (33); and / or A second refrigerating air damper (32) disposed at the second air supply opening (34) and configured to control the opening or closing of the second air supply opening (34) to control the opening or closing of the second air inlet (52).

4. The control method of the refrigeration equipment according to claim 1, wherein, It further includes a fan (54) configured to make cold air flow from the refrigerating chamber (2) to the temperature and humidity control chamber (5).

5. The control method of a refrigeration device according to any one of claims 1 to 4, characterized in that, It further includes: A temperature and humidity information acquisition device configured to acquire temperature and humidity information, where the temperature and humidity information includes the target temperature and target humidity of the temperature and humidity control chamber (5); and A control device communicatively connected to the air inlet regulating device and the temperature and humidity information acquisition device, and configured to determine the on-off state of at least one of the first air supply opening (33), the second air supply opening (34), the first air inlet (51), and the second air inlet (52) according to the target temperature and the target humidity.

6. The control method of the refrigeration device according to claim 5, characterized in that, The temperature and humidity information acquisition device includes: A human-computer interaction device configured to acquire the target temperature and target humidity of the temperature and humidity control chamber (5) set by a user; and / or A visual recognition device configured to acquire visual information of the types of items stored in the temperature and humidity control chamber (5) and acquire the target temperature and target humidity of the temperature and humidity control chamber (5) according to the visual information.

7. The control method of the refrigeration device according to any one of claims 1 to 4, characterized in that, It further includes a heating device (6) disposed in the temperature and humidity control chamber (5), and the heating device (6) is configured to heat the gas in the temperature and humidity control chamber (5).

8. The control method of the refrigeration equipment according to claim 1, wherein, If the real-time temperature of the refrigerating chamber (2) drops and the difference between the real-time temperature of the refrigerating chamber (2) and the preset refrigerating temperature is less than a first preset difference, reduce the air volume of the first air supply opening (33).

9. The control method of the refrigeration device according to claim 1, characterized in that After the real-time temperature of the temperature and humidity control chamber (5) reaches the target temperature, keep the first air inlet (51) in a closed state, or make the first air inlet (51) periodically switch between an open state and a closed state, where when the first air inlet (51) periodically switches between a closed state and an open state, the opening degree of the first air inlet (51) is less than a first preset opening degree.

10. The control method of the refrigeration equipment according to claim 1, characterized in that, When the second air inlet (52) periodically switches between a closed state and an open state, the opening degree of the second air inlet (52) is less than a second preset opening degree.

11. The control method of the refrigeration device according to any one of claims 1 to 10, characterized in that, It further includes: Acquire the initial humidity of the temperature and humidity control chamber (5); If the initial humidity is greater than the target humidity, keep the second air supply opening (34) and the second air inlet (52) in an open state until the temperature and humidity control chamber (5) reaches the target temperature and the target humidity.

12. The control method of the refrigeration device according to any one of claims 1 to 10, characterized in that, It further includes: Obtain the initial humidity of the temperature and humidity control chamber (5); If the initial humidity is less than the target humidity, the control method includes: Raise the temperature of the temperature and humidity control chamber (5); Keep the first air supply opening (33) open until the refrigerating chamber (2) reaches a preset refrigerating temperature, and the preset refrigerating temperature is greater than the dew point temperature corresponding to the target temperature and the target humidity; Keep the first air inlet (51) open and keep the second air inlet (52) closed until the temperature and humidity control chamber (5) reaches the target temperature and the target humidity.

13. The control method of the refrigeration device according to claim 12, wherein, Raising the temperature of the temperature and humidity control chamber (5) includes: Keep both the first air inlet (51) and the second air inlet (52) closed; and / or Heat the gas in the temperature and humidity control chamber (5).

14. The control method of the refrigeration device according to claim 12, characterized in that, If the real-time humidity in the temperature and humidity control chamber (5) is greater than the target humidity after the temperature of the temperature and humidity control chamber (5) is raised, keep the second air supply opening (34) and the second air inlet (52) open.

15. The control method of the refrigeration device according to any one of claims 1 to 10, characterized in that Obtain the target temperature and the target humidity of a plurality of the temperature and humidity control chambers (5); For each of the temperature and humidity control chambers (5) with the target humidity less than the fifth preset humidity, keep the second air supply opening (34) and the second air inlet (52) open until the temperature and humidity control chamber (5) reaches the target temperature and the target humidity; For each of the temperature and humidity control chambers (5) with the target humidity greater than the sixth preset humidity, determine a plurality of corresponding preset refrigerating temperatures in the order from high to low of the dew point temperatures corresponding to the target temperatures and the target humidities of the temperature and humidity control chambers (5), each of the preset refrigerating temperatures being greater than the corresponding dew point temperature, keep the first air supply opening (33) open to cool the refrigerating chamber (2) to each of the preset refrigerating temperatures in sequence, and keep the first air inlet (51) of the temperature and humidity control chamber (5) that has not reached the target temperature open until each of the temperature and humidity control chambers (5) reaches the target temperature and the target humidity.

16. The control method of the refrigeration device according to claim 15, wherein, If the temperature and humidity control chamber (5) is heated again after reaching the target temperature and the target humidity, keep the first air inlet (51) open, and the opening degree of the first air inlet (51) is less than the third preset opening degree.

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