Control method for refrigeration equipment and refrigeration equipment

Abstract

The invention provides a control method for refrigeration equipment and the refrigeration equipment. The control method comprises the steps that a draught fan is started, and a sub air plate is driven to rotate relative to a fixed shaft so that a window can be opened to be in an air outlet state; the rotating speeds of a plurality of downstream fans are obtained through a downstream sensor, and whether the rotating speeds of any two downstream fans are the same or not is judged; if not, entering an adjusting step, controlling an air plate assembly to rotate or move so as to form a ventilation opening with the inner wall of the air duct, adjusting the size of the ventilation opening until the rotating speeds of all the downstream fans are the same, and then maintaining the size of the current ventilation opening to continue to supply air. According to the control method, the size of the ventilation opening is changed by adjusting rotation or movement of the air adjusting plate, and then the air volume conveyed to the downstream of the air duct is changed, so that the downstream of the air duct is in a uniform air state, and air conveyed into the storage chamber or entering the smell detection device is in a uniform speed state; the storage requirement of a user is met; and the detection accuracy of the smell detection device is improved.

Description

Technical Field

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

[0002] Since the items stored in the storage room of the current refrigeration equipment are becoming more and more diverse, the smell emitted by some items is small and not easily smelled by users or covered by other smells, making it difficult for users to detect, which affects the user's judgment of the freshness of the items. Some manufacturers add odor detection devices in the refrigeration equipment to detect the odor in the storage room through the odor detection device. However, for air-cooled refrigeration equipment, the uneven wind speed in the storage room will affect the detection accuracy of the odor detection device, and still cannot effectively judge the freshness state of the items in time, thus affecting the user experience.

[0003] In view of this, it is necessary to design a new control method for refrigeration equipment and a refrigeration equipment to solve one of the above problems. Summary of the Invention

[0004] The present invention provides a control method for refrigeration equipment and a refrigeration equipment to solve one of the above problems.

[0005] In order to achieve the above object, the technical solutions provided by the present invention are as follows:

[0006] The present invention provides a control method for refrigeration equipment, and the control method includes:

[0007] Start the fan, drive the sub-air plate to rotate relative to the fixed shaft to open the window and be in the air outlet state;

[0008] Obtain the rotation speeds of a plurality of downstream fans through a downstream sensor, and judge whether the rotation speeds of any two downstream fans are the same;

[0009] If not, enter the adjustment step, control the air plate assembly to rotate or move to form a ventilation opening with the inner wall of the air duct and adjust the size of the ventilation opening until the rotation speeds of all the downstream fans are the same, and then maintain the size of the current ventilation opening to continue air supply.

[0010] Further, before the downstream sensor detects the rotation speed of the downstream fan, wait for the downstream fan to rotate and last for a first duration.

[0011] Further, the adjustment step includes:

[0012] Further determine whether the rotation speed difference between any two downstream fans is greater than a first threshold,

[0013] If so, enter the high-amplitude adjustment step;

[0014] If not, enter the low-amplitude adjustment step.

[0015] Further, the high-amplitude adjustment step includes: determining the air deflector assembly near the downstream fan with a lower rotational speed, and controlling the rotation of the air deflector assembly so that a ventilation opening is formed between the air deflector assembly and the inner wall of the air duct or between two adjacent air deflector assemblies;

[0016] Re-obtain the rotational speed difference between any two downstream fans until the rotational speed difference between any two downstream fans is not greater than the first threshold;

[0017] Then, enter the low-amplitude adjustment step again.

[0018] Further, the high-amplitude adjustment step includes: determining the air deflector assembly near the downstream fan with a lower rotational speed, and controlling the corresponding contact part of the air deflector assembly to move along the track to drive the linear movement of the air deflector assembly, and a ventilation opening is formed between the air deflector assembly and the inner wall of the air duct or between two adjacent air deflector assemblies;

[0019] Re-obtain the rotational speed difference between any two downstream fans until the rotational speed difference between any two downstream fans is not greater than the first threshold;

[0020] Then, enter the low-amplitude adjustment step again.

[0021] Further, the high-amplitude adjustment step includes: determining the auxiliary sub-air deflector near the downstream fan with a lower rotational speed, and controlling the rotation of the auxiliary sub-air deflector to adjust the size of the auxiliary window opened by the auxiliary sub-air deflector;

[0022] Re-obtain the rotational speed difference between any two downstream fans until the rotational speed difference between any two downstream fans is not greater than the first threshold;

[0023] Then, enter the low-amplitude adjustment step again.

[0024] Further, the low-amplitude adjustment step includes: controlling all the air deflector assemblies to rotate or move slightly respectively, and finely adjusting until the rotational speeds of all downstream fans are the same.

[0025] Further, after obtaining the rotational speeds of the downstream fans or after the rotational speeds of all downstream fans are the same, control the odor detection device to detect the air volume on the air outlet side of the air duct and obtain the first air volume detection value, and then compare it with the air volume threshold;

[0026] If the first air volume detection value is greater than the first preset air volume value, control the fan to reduce the air volume;

[0027] If the first air volume detection value is less than the second preset air volume value, control the fan to increase the air volume;

[0028] If the first air volume detection value is between the first preset air volume value and the second preset air volume value, control the odor detection device to start detecting, where the first preset air volume value is greater than the second preset air volume value.

[0029] Further, control the fan to reduce the air volume or control the fan to increase the air volume and continue for the second preset duration, and then re-determine whether the rotational speeds of any two of the downstream fans are the same.

[0030] The present invention also provides a refrigeration device that executes the above control method for the refrigeration device.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: The control method for the refrigeration device of the present invention conveys gas to the downstream of the air duct through a window, and adjusts the rotation or movement of the air regulating plate according to the rotational speed of the downstream fan to change the size of the ventilation opening, thereby changing the air volume conveyed to the downstream of the air duct. By determining that the rotational speeds of all downstream fans are the same, it is determined that the downstream of the air duct is in a uniform air state, so that the air conveyed to the storage room indoors or entering the odor detection device is in a uniform speed state, meeting the storage needs of users and improving the detection accuracy of the odor detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a partial structural schematic diagram of an embodiment of the refrigeration device of the present invention.

[0033] Figure 2 is Figure 1 an exploded view of each component in the embodiment.

[0034] Figure 3 is Figure 2 a sectional view of the air mixing device along the axial direction of the cylinder body in

[0035] Figure 4 is Figure 3 a side view of the air mixing device in

[0036] Figure 5 is Figure 4 an air path diagram of the air mixing device in

[0037] Figure 6 is Figure 2 a structural schematic diagram of another embodiment of the air duct in

[0038] Figure 7 is a structural schematic diagram of the air regulating device cooperating with the air duct.

[0039] Figure 8 is a structural schematic diagram of an embodiment of the air regulating device in a state of closing the air duct.

[0040] Figure 9 is a structural schematic diagram of the air regulating device in a state of opening the air duct.

[0041] Figure 10 This is a schematic structural view of another embodiment of the air regulating device in the state of opening the air duct.

[0042] Figure 11 This is a schematic structural view of the air regulating device in the state of opening the air duct.

[0043] Figure 12 It is Figure 11 An enlarged view of the partial structure at position A in

[0044] Figure 13 This is a flowchart of an embodiment of the control method of the present invention.

[0045] Figure 14 This is a flowchart of another embodiment of the control method of the present invention.

[0046] Figure 15 This is a flowchart of the adjustment step of the present invention. Detailed implementation manners

[0047] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] It should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the auxiliary drawings. This is only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention. Specifically, in the present invention, the user's operation surface is taken as the front, the direction towards the ground is taken as the lower, and on the contrary, the direction away from the ground is taken as the upper. Other descriptions indicating orientations are defined based on "upper" and "lower".

[0049] In the various drawings of the present invention, for the convenience of illustration, the sizes of some structures or parts are exaggerated relative to other structural parts. Therefore, it is only used to illustrate the basic structure of the subject matter of the present invention.

[0050] The present invention provides a control method and a refrigeration device for a refrigeration device, such as Figures 1 to 12As shown in the figure, the refrigeration device includes an air duct 20, an odor detection device 30 located inside the air duct 20 or on the air outlet side of the air duct 20, and an air regulating device 10 located upstream of the odor detection device 30. The air duct 20 includes a supply air duct and a return air duct. The supply air duct is formed between the air duct cover plate and the inner wall of the rear of the inner container to convey cooled air into the storage room. The return air duct is located at the lower part of the storage room and is used to connect the storage room and the refrigeration room. The air that has undergone heat exchange in the storage room is conveyed to the refrigeration room through the return air duct to be cooled again. Since the air circulates between the storage room and the refrigeration room, the odor of the gas passing through the gas path is considered to represent the odor in the storage room.

[0051] As Figure 2 and Figure 6 As shown in the figure, a air distribution structure 21 is provided in the air duct 20. The air distribution structure 21 divides the air duct 20 into different areas, so that the odor detection device 30 can selectively detect the odor of the gas in a specific area. It can be understood that the air distribution structure 21 can be provided in the supply air duct and / or the return air duct. Hereinafter, the case where the air distribution structure 21 is provided in the return air duct will be taken as an example for detailed description.

[0052] As a preferred embodiment of the present invention, Figure 2 As shown in the figure, the air distribution structure 21 divides the air duct 20 into an intermediate air duct 22 and a side air duct 23 located on the side of the intermediate air duct 22. The air inlet 31 of the odor detection device 30 corresponds to the intermediate air duct 22. By setting the intermediate air duct 22 and the odor detection device 30 corresponding to the downstream of the intermediate air duct 22 in the refrigeration device, the gas is conveyed to the air duct 20 after being disturbed and mixed by the fan. The gas at the edge of the air duct 20 is conveyed to the downstream of the air duct 20 through the side air duct 23, while the odor detection device 30 only detects the relatively uniformly mixed gas conveyed through the intermediate air duct 22, so that the test result of the odor detection device 30 can truly reflect the odor of the gas in the storage room, enabling the user to dispose of it in time and improving the user experience.

[0053] Furthermore, the intermediate air duct 22 includes a central air duct 221, an upper air duct 222 located above the central air duct 221, and a lower air duct 223 located below the central air duct 221. The odor detection device 30 is located on the air outlet side of the central air duct 221. The central air duct 221 is located at the exact center of the air duct 20. The setting of the central air duct 221 can convey the gas near the upper or lower side of the air duct 20 through the upper air duct 222 and the lower air duct 223 respectively. The central air duct 221 only conveys the gas in the middle position of the air duct 20, so that the odor detection device 30 only detects the gas in the center position of the air duct 20, avoiding the influence of the gas at the edge part in contact with the inner wall of the air duct 20 on the detection result.

[0054] Specifically, the air distribution structure 21 includes a pair of partition plates 211 extending to the inner wall of the air duct 20. The intermediate air duct 22 is formed between the pair of partition plates 211. The air distribution structure 21 further includes a pair of connecting plates 212 connected between the pair of partition plates 211. The connecting plates 212 are respectively located on both sides of the vertical center of the partition plates 211. The central air duct 221 is formed between the pair of partition plates 211 and the pair of connecting plates 212.

[0055] In this embodiment, the partition plates 211 extend in the up and down direction, and the connecting plates 212 extend in the horizontal direction. Of course, the partition plates 211 can also extend in the horizontal direction, and the connecting plates 212 are connected to the pair of partition plates 211 in the up and down direction, and both can achieve the formation of the central air duct 221.

[0056] As another preferred embodiment of the present invention, as Figure 6 shown, the air distribution structure 21 divides the air duct 20 into a main air duct 24 and auxiliary air ducts 25 located around the main air duct 24. The air inlet 31 of the odor detection device 30 corresponds to the main air duct 24. The volume of the main air duct 24 is larger than the volume of the auxiliary air ducts 25. The setting of the main air duct 24 can fully mix the gas in the main air duct 24 with a larger space, and the gas entering the odor detection device 30 is more representative. The test result can more truly reflect the odor of the gas in the storage room, reminding the user to dispose of it in time and improving the user experience.

[0057] In this embodiment, the auxiliary air ducts 25 are respectively located on both sides of the main air duct 24. The ratio of the volume of the main air duct 24 to the volume of each auxiliary air duct 25 is not greater than 16:13. The appropriate volume ratio of the main air duct 24 to the auxiliary air ducts 25 can obtain specific gas and does not affect the circulation and transportation of other gases.

[0058] Specifically, the air distribution structure 21 includes a pair of partition plates 211 extending to the inner wall of the air duct 20. The main air duct 24 is formed between the pair of partition plates 211, and the auxiliary air ducts 25 are formed between the partition plates 211 and the inner wall of the air duct 20. In this embodiment, the lengths of the main air duct 24 and the auxiliary air ducts 25 in the front and rear directions are the same, so the cross-sectional area of the main air duct 24 is larger than the cross-sectional area of the auxiliary air ducts 25.

[0059] It can be understood that when the cross-sectional areas of the main air duct 24 and the auxiliary air ducts 25 in the horizontal direction are equal, the length of the main air duct 24 in the front and rear directions is greater than the length of the auxiliary air ducts 25, and the technical effect of the larger volume of the main air duct 24 can also be achieved, which is also within the protection scope of the present invention.

[0060] Furthermore, the air distribution structure 21 further includes a pair of connecting plates 212 connected between a pair of the partition plates 211. The main air duct 24 includes a central air duct 221 formed between the pair of connecting plates 212, an upper air duct 222 located above the central air duct 221, and a lower air duct 223 located below the central air duct 221. The volume of the central air duct 221 is not less than that of the upper air duct 222 and the lower air duct 223. The air inlet 31 of the odor detection device 30 is correspondingly arranged opposite to the central air duct 221, that is, the odor detection device 30 only detects the gas conveyed from the central air duct 221, so that the detection result can represent the actual gas situation in the storage room, so that the user can make a timely disposal.

[0061] In the above two embodiments, the air duct 20 further includes a grille plate 27 on the air outlet side of the air duct 20. The grille plate 27 is fixed to the air outlet end of the air distribution structure 21 to convey gas.

[0062] As Figure 2 shown, the odor detection device 30 is located on the air outlet side of the central air duct 221. Specifically, the odor detection device 30 includes a housing, an odor sensing unit and an air volume detection unit inside the housing. The housing is provided with an air inlet 31, and the air inlet 31 faces the air conditioning device 10, so that the adjusted gas directly enters the housing for detection. The air volume detection unit is used to detect the air volume entering the housing, and gives corresponding indications when the air volume meets the requirements and also gives corresponding indications when the air volume does not meet the requirements. Preferably, the air inlet 31 is located in the middle of the air duct in the radial direction to receive more representative gas.

[0063] The odor detection device 30 is fixed on the grille plate 27 to fix the odor detection device 30, improve the stability of the test of the odor detection device 30, and at the same time does not affect the gas transportation.

[0064] As Figures 7 to 12 shown, the air conditioning device 10 is located upstream of the odor detection device 30 to adjust the wind speed entering the odor detection device 30, that is, the wind speed entering the odor detection device 30 is adjusted for uniformity, improve the detection accuracy of the odor detection device 30, and can accurately provide the odor in the storage room for the user, so that the user can effectively judge the freshness state of the items in time and improve the user experience.

[0065] The air regulating device 10 is located upstream of the odor detection device 30 to regulate the wind speed entering the odor detection device 30. That is, the air regulating device 10 adjusts the uniformity of the wind speed about to enter the odor detection device 30, improving the detection accuracy of the odor detection device 30, accurately providing the odor in the storage room for the user, enabling the user to effectively judge the freshness state of the items in a timely manner, and enhancing the user experience.

[0066] In a specific embodiment, the air regulating device 10 is located in one of the air supply ducts, and the odor detection device 30 is located in the air supply duct or at the air outlet of the air supply duct. That is, the odor detection device 30 is arranged in the storage room near the downstream of the air supply duct to detect the odor of the gas whose wind speed has been regulated by the air regulating device 10, improving the accuracy of the odor detection device 30.

[0067] In another specific embodiment, as Figure 2 and Figure 7 shown, the air regulating device 10 is located in the return air duct, and the odor detection device 30 is correspondingly located downstream in the return air duct or at the air outlet of the return air duct to detect the odor of the gas whose wind speed has been regulated by the air regulating device 10, improving the accuracy of the odor detection device 30.

[0068] In another specific embodiment, the air regulating device 10 is located in both the air supply duct and the return air duct. After the gas in the air path is evenly regulated twice by the air regulating device, it is considered that the wind speed at any position in the air path is in the same state. The odor detection device is located at any position in the air path formed by the air supply duct and the return air duct, improving the accuracy of the odor detection device.

[0069] The following takes the air regulating device located in the return air duct as an example for detailed description. Since the refrigeration compartment is located at the rear of the storage room, the return air duct connects the storage room and the refrigeration compartment in the front-rear direction, the radial direction of the return air duct is along the transverse direction, and the extending direction of the return air duct is the front-rear direction.

[0070] As Figure 1 and Figure 2 shown, the refrigeration device further includes a fan 40. The fan 40 is located in the return air duct and upstream of the air distribution structure 21 to convey the gas in the storage room into the return air duct. In order to convey the gas at each position in the storage room into the return air duct, two fans 40 are provided and arranged along the transverse direction of the refrigeration device. The return air duct corresponds to the space between the two fans 40.

[0071] As another preferred embodiment of the present invention, the refrigeration device further includes a mixing air device 50 located between the fan 40 and the return air duct, as Figures 1 to 5As shown, the air to enter the return air duct in advance is fully mixed, so that the gas entering the odor detection device 30 from the downstream of the return air duct can represent the situation of the entire storage room, and the real situation of the storage room can be timely fed back to the user.

[0072] The air mixing device 510 includes a cylinder body 51 forming an air mixing chamber 51. The length of the cylinder body 51 is not less than the length of the air duct 20, so that the gas is fully mixed in the air mixing chamber 510, and the gas transported into the air duct 20 can better represent the situation in the storage room.

[0073] The cylinder body 510 includes an upper wall, a lower wall, and a pair of side walls connecting the upper wall and the lower wall. The air mixing chamber 510 is formed between the upper wall, the lower wall and the side walls. The radial direction of the cylinder body 51 is the up and down direction, and the axial direction of the cylinder body 51 is the length direction of the cylinder body 51. In this embodiment, the axial direction of the cylinder body 51 is the front and back direction.

[0074] As Figures 2 to 5 shown, the air mixing device 50 further includes an air mixing plate 52 located in the air mixing chamber 510. The air entering the air mixing chamber 510 is fully mixed by the air mixing plate group 52. Specifically, the air mixing plate group 52 includes a converging air plate 521 and a diverging air plate 522 which are arranged at intervals in sequence. Among them, in the direction from the air inlet side to the air outlet side of the air mixing chamber 510, the converging air plate 521 extends from the edge of the cylinder body 51 to the middle in the radial direction, and the diverging air plate 522 extends from the middle of the cylinder body 51 to the edge. That is, the size of the air inlet end of the converging air plate 521 is larger than the size of the air outlet end of the converging air plate 521, and the size of the air inlet end of the diverging air plate 522 is smaller than the size of the air outlet end of the diverging air plate 522. First, the converging air plate 521 converges and mixes the gas entering the air mixing cylinder 510 together, and then the diverging air plate 522 disperses and exports the mixed gas. The mixed gas represents the real situation of all the gas before entering the air mixing chamber 510, provides a real reference for the user, and improves the user experience.

[0075] The converging air plate 521 is symmetrically designed along the radial center of the cylinder body 51. The converging air plate 521 forms an air inlet area 5213. The converging air plate 521 guides the gas to the middle area of the cylinder body 51 for full mixing and then can be transported along the radial center of the cylinder body 51 to the diverging air plate 522, and then can be transported from the radial center of the cylinder body 51 to the middle position of the air duct 20. That is, the gas transported into the central air duct 221 along the radial center of the cylinder body 51 can better represent the real situation of the gas in the storage room, which is conducive to the odor detection device 30 to feedback the real data in the storage room.

[0076] Specifically, the air collecting plate 521 includes a pair of inner air collecting plates 5211 and a plurality of outer air collecting plates 5212 located outside the inner air collecting plates 5211. The inner air collecting plates 5211 are arranged close to the center of the cylinder body 51 along the radial direction. The outer air collecting plates 5212 have the same shape as the inner air collecting plates 5211, and the inner air collecting plates 5211 and the outer air collecting plates 5212 are arranged at intervals along the radial direction of the cylinder body 51.

[0077] As Figure 4 shown, the ends of a pair of the inner air collecting plates 5211 close to the air inlet side form a first air inlet 5214, and the ends of a pair of the inner air collecting plates 5211 close to the air outlet side form a first air outlet 5215. The first air outlet 5215 is smaller than the first air inlet 5214, that is, a pair of the inner air collecting plates 5211 are in a funnel shape facing the air diffusing plate 522. The gas passing through the inner air collecting plates 5211 is more concentrated, so that the gas enters from the first air inlet 5214, converges and mixes, and then is led out from the first air outlet 5215. That is, a mixing air region 5216 is formed between the air collecting plate and the air diffusing plate 522, and the gas flowing along the air collecting plate 521 is fully mixed in the mixing air region 5216.

[0078] In the radial direction of the cylinder body 51, the ratio of the size of the first air inlet 5214 to that of the mixing air cavity 510 is one quarter to one half. Preferably, the radial dimension of the first air inlet 5214 is one third of that of the mixing air cavity 510. The size of the first air inlet 5214 can ensure that the wind speed of the gas mixed by the outer air collecting plates 5212 is weaker than the wind speed of the gas transported by the inner air collecting plates 5211. After the gas introduced by the outer air collecting plates 5212 is impacted by the gas transported by the first air outlet 5215, it is then mixed above or below the first air outlet 5215, improving the mixing efficiency and the stability of mixing.

[0079] Auxiliary air inlets and auxiliary air outlets are formed between adjacent outer air collecting plates 5212 or between the outer air collecting plates 5212 and adjacent inner air collecting plates 5211. The auxiliary air inlets are located on both sides of the first air inlet 5214 along the radial direction of the cylinder body 51, and the auxiliary air outlets are located on both sides of the first air outlet 5215 along the radial direction of the cylinder body 51.

[0080] In some embodiments, the air inlet ends of the inner air collecting plates 5211 and the outer air collecting plates 5212 are located inside the mixing air cavity 510, that is, a reserved space is formed between the air inlet end of the air collecting plate 521 and the air inlet end of the cylinder body 51. When cooperating with the fan 40, the fan 40 can be arranged in the reserved space to transport gas into the mixing air cavity 510.

[0081] As Figure 4 and Figure 5As shown in the figure, the air mixing plate group 52 further includes a deflector plate 523 located at the end of the air collecting plate 521 near the air outlet side. The deflector plate 523 extends along the axial direction of the cylinder body 51 from the end of the air collecting plate 521. Since the air collecting plate 521 is inclined towards the center of the air mixing cylinder 510, after the gas enters the interior of the air mixing cylinder 510 along the air collecting plate 521, it is buffered and redirected by the deflector plate 523, preventing the gas from flowing towards the air outlet side of the cylinder body 51 too quickly, and enabling the gas to be fully mixed near the deflector plate 523.

[0082] In this embodiment, the deflector plate 523 is closely connected to the air collecting plate 521, so that there is no gap between the air collecting plate 521 and the deflector plate 523. The air guided by the air collecting plate 521 is directly buffered and redirected by the deflector plate 523. Preferably, the air collecting plate 521 and the deflector plate 523 are integrally formed to enhance the structural strength of the air collecting plate 521 and the deflector plate 523.

[0083] Furthermore, as Figure 5 shown, the air mixing plate group 52 includes a pair of air dispersing plates 522 corresponding to each other up and down, and the pair of air dispersing plates 522 are symmetrically designed with respect to the radial center of the cylinder body 51. The pair of air dispersing plates form an air dispersing area 5213, and the air dispersing plates 522 exactly correspond to the inner air collecting plate 5211, facilitating the gas mixed by the inner air collecting plate 5211 to enter the air dispersing area 5213. The center of the air dispersing area 5213 corresponds to the central air duct 221 of the air duct 20. After being dispersed and buffered by the air dispersing plate 522 in the middle, the gas can easily enter the central air duct 221.

[0084] The air inlet ends of the pair of air dispersing plates form a second air inlet 5224. The second air inlet 5224 and the first air outlet 5215 are arranged at an axial interval along the cylinder body 51, so that part of the gas after being fully mixed near the first air outlet 5214 directly enters the air dispersing area 5223 through the second air inlet 5224.

[0085] The air outlet sides of the pair of air dispersing plates 522 form a second air outlet 5225. The radial dimension of the second air outlet 5225 along the cylinder body 51 is larger than that of the second air inlet 5224, making the air dispersing plates 522 form a trumpet shape opening towards the air outlet side, which can slow down the gas flow rate and make the gas entering the air duct 20 relatively uniform.

[0086] The radial dimension of the second air outlet 5225 along the cylinder body 51 is equivalent to the radial dimension of the entire air collecting plate 521 along the cylinder body 51, realizing the transportation of the gas.

[0087] Specifically, as Figure 5As shown, the air-diffusing plate 522 has a first section 5221 near the air inlet side and a second section 5222 near the air outlet side. The angle between the first section 5221 and the axial direction of the cylinder body 51 is greater than the angle between the second section 5222 and the axial direction of the cylinder body 51. When the gas entering the air-diffusing area 5223 reaches the second section 5222, it is buffered, and part of the gas is secondarily mixed with the gas in the middle area of the cylinder body 51.

[0088] As a preferred embodiment of the present invention, as Figure 4 and Figure 5 shown, the air-mixing plate group 52 further includes a wind-dividing member 523 located between the air-collecting plate 521 and the air-diffusing plate 522. The wind-dividing member 523 is located at the radial center position of the cylinder body 51. The wind-dividing member 523 divides the air-mixing area 5216 into an upper air-mixing area and a lower air-mixing area along the radial direction of the cylinder body 51. The wind-dividing member 523 separates the gas output from the first air outlet 5215 vertically along the radial direction of the cylinder body 51 and enters the upper air-mixing area and the lower air-mixing area respectively. Specifically, during the process of the gas flowing from the funnel-shaped inner air-collecting plate 5211 to the air-guiding member 524, the wind speed increases. After the gas impacts the middle air-guiding member 524, it will guide the wind to a farther distance on the upper and lower sides, and then is fully mixed with the gas transported by the auxiliary air outlet in the upper air-mixing area and the lower air-mixing area respectively, and enters the second air inlet 5224 along the end of the wind-dividing member 523 and then enters the air-diffusing area 5223.

[0089] Preferably, the wind-dividing member 523 is arranged closer to the air-collecting plate 521 than the air-diffusing plate 522, so that the gas entering the air-mixing area 5216 is guided into the upper air-mixing area and the lower air-mixing area by the wind-dividing member 523 in a shorter time. The design of the wind-dividing member 523 combined with the size of the first air inlet 5214 enables the gas transported through the auxiliary air outlet to be mixed with the gas guided by the wind-dividing member 523 at the center of the upper air-mixing area or the lower air-mixing area, improving the efficiency and stability of air mixing.

[0090] Preferably, the wind-dividing member 523 is arc-shaped and protrudes towards the air-collecting plate 521. The arc-shaped wind-dividing member 521 can play a role in guiding the wind.

[0091] It can be understood that the wind-dividing member 523 can be an arc-shaped plate or a barrel shape, as long as the surface facing the air-collecting plate 521 is arc-shaped, the technical effect of wind division can be achieved, and it is within the protection scope of this application.

[0092] Preferably, in the radial direction of the cylinder body 51, the size of the wind-dividing member 523 is not less than the size of the first air outlet 5214, and the gas output from the first air outlet 5214 is vertically separated by the wind-dividing member 523 and will not directly cross the wind-dividing member 523 and enter the second air inlet 5224.

[0093] As another preferred embodiment of the present invention, as Figure 4 and Figure 5 shown, the air mixing plate group 52 further includes at least one air guiding member 524 located in the air dispersion area 5223, and part of the gas entering the air dispersion area 5223 from the second air inlet 5224 is guided by the air guiding member 524 into the air duct 20 on the air outlet side.

[0094] The air guiding member 524 is arranged close to the first section 5221. Preferably, in the radial direction of the cylinder body 51, the size of the air guiding member 524 is larger than that of the second air inlet 5224. When the gas located near the center of the air dispersion area 5223 passes through the air guiding member 524, the gas bypasses the air guiding member 524 and changes direction, mixes with the gas on both sides of the air guiding member 524 again, and then is transported into the air duct 20 on the air outlet side.

[0095] In a specific embodiment, the air guiding member 524 is in a columnar closed shape, including but not limited to a cylindrical shape, an elliptical cylindrical shape, and a spindle-shaped columnar shape. The air guiding member 524 buffers the air and can evenly distribute the air, and guides part of the air to blow upward or downward and mix with the air near the air dispersion plate 522, and the other part bypasses the air guiding member 524 along the arc surface of the air guiding member 524 and then is led out from the air outlet side of the cylinder body 51.

[0096] In another specific embodiment, the air guiding member 524 is in a semi-closed shape opening towards the air outlet side of the cylinder body 51. The air guiding member 524 includes but not limited to a semi-cylindrical shape, a horn-shaped columnar shape, and a triangular columnar shape. The air guiding member 524 guides the air to the vicinity of the air dispersion plate 522 for mixing, and then is guided by the inner wall of the air dispersion plate 522 to the air outlet side.

[0097] In another specific embodiment, the air guiding member 524 is in a semi-closed shape opening towards the second air inlet 5214. The air guiding member 524 has an air guiding surface protruding towards the second air outlet. The air guiding member 524 includes but not limited to an inverted C-shaped column and an inverted arc-shaped column. After the wind blows onto the air guiding member 524, it is respectively guided to the upper and lower air dispersion plates 522 and mixed with the adjacent air, and then is guided by the air guiding surface to the air outlet side of the cylinder body 51.

[0098] In another specific embodiment, the air guiding member 524 includes several, which can be a single combination of any shape in the above embodiments, or an arbitrary combination of multiple shapes.

[0099] It can be understood that when only one air guiding member 524 is provided, the air guiding member 524 is located at the center of the air dispersion area 5223 in the radial direction of the cylinder body 51; or, when several air guiding members 524 are provided, several air guiding members 524 are symmetrically arranged with respect to the center of the cylinder body 51 in the radial direction.

[0100] As another preferred embodiment of the present invention, as Figure 2 and Figure 3 shown, the air mixing device 50 further includes a wind guiding structure 53 fixed to the air outlet end of the cylinder body 51. The wind guiding structure 53 includes a pair of inner wind guiding plates 531 arranged up and down, that is, the inner wind guiding plates 531 are fixed to the upper wall and the lower wall. The pair of inner wind guiding plates 531 extend obliquely towards each other from the end of the cylinder body 51 into the air mixing cavity 510, so that the gas is more concentrated between the pair of inner wind guiding plates 531, which is beneficial to transporting the gas to the odor detection device 30 in the central air duct 221 of the air duct 20.

[0101] Furthermore, as Figure 4 and Figure 5 shown, the included angle between the inner wind guiding plate 531 and the axis of the cylinder body 51 is between 30° and 60°. Preferably, the included angle between the inner wind guiding plate 531 and the axis of the cylinder body 51 is 45°. After the gas horizontally passes through the inner wall of the inner wind guiding plate 531, it is guided to flow in the radial central direction of the cylinder body, and is mixed again with the gas below or above the inner wind guiding plate 531, and then is transported to the odor detection device 30 in the corresponding central air duct 221 of the downstream air duct 20.

[0102] The air outlet end of the inner wind guiding plate 531 forms a third air outlet. The third air outlet is the air outlet side of the air mixing device 50. The dimension of the third air outlet along the radial direction of the cylinder body is smaller than the dimension of the second air outlet along the radial direction of the cylinder body. The gas transported from the air dispersion area 5223 to the air outlet flows along the axial direction of the cylinder body 51 to the inner wall of the inner wind guiding plate 531, and after being blocked by the inner wall of the inner wind guiding plate 531, it flows downward and is mixed again with the gas in the middle of the air dispersion area 5223, and then is output from the third air outlet.

[0103] Furthermore, as Figure 2 shown, the wind guiding structure 531 further includes a pair of outer wind guiding plates 532 fixed to the side wall of the cylinder body 51, that is, the outer wind guiding plates 532 are fixed to the side wall. The outer wind guiding plates 532 extend obliquely outward from the end of the cylinder body 51, and disperse the gas along the transverse direction of the cylinder body 51, which is beneficial to transporting the gas to the air duct 20.

[0104] Furthermore, the included angle between the outer wind guiding plate 532 and the axis of the cylinder body 51 is between 30° and 60°. Preferably, the included angle between the outer wind guiding plate 532 and the axis of the cylinder body 51 is 45°, so that the air volume in the middle of the cylinder body 51 is greater than that on both sides, which is beneficial to transporting more gas to the odor detection device 30 in the central air duct 221.

[0105] Furthermore, the width of the outer air guide plate 532 is 10 mm to 12 mm. The appropriate size of the outer air guide plate 532 can not only disperse the gas but also does not affect the normal transportation of the gas at the axial middle position in the air mixing chamber 510.

[0106] As Figures 7 to 12 shown, the air regulating device 10 includes a downstream air measuring assembly 12, at least one air plate assembly 13 located upstream of the downstream air measuring assembly 12 and rotatably connected to the inner wall of the air duct 20, and a control unit (not shown). The odor detection device 30 is located downstream of the downstream air measuring assembly 12.

[0107] Specifically, the dimension of the downstream air measuring assembly 12 in the radial direction of the air duct 20 is not less than half of the total length of the air plate assembly 12, reducing the range of the downstream air outlet side of the air duct 20 and delivering the regulated and uniform gas to the odor detection device 30 in a targeted manner.

[0108] The downstream air measuring assembly 12 includes a plurality of downstream fans 121 and a downstream inductor (not shown) for detecting the rotation speed of the downstream fans 121. All the downstream fans 121 have the same size and specification. The downstream inductor is communicatively connected to the control unit to facilitate the communication unit receiving the result of the rotation speed of the downstream fans 121 measured by the downstream inductor. Preferably, the downstream inductor is located between two adjacent downstream fans 121 to reduce the error of the downstream inductor detecting the rotation speed of the downstream fans 121.

[0109] As Figure 8 and Figure 9 shown, a plurality of the downstream fans 121 enclose a wind gathering area 123 communicating with the air inlet 31 of the odor detection device 30. The regulated and uniform wind passes through the arrangement of the downstream fans 121 and converges to facilitate the odor detection device 30 to receive.

[0110] Preferably, there are at least three downstream fans 121, and the downstream fans 121 are arranged in a trumpet shape or a V shape with the opening facing the odor detection device 30.

[0111] As Figure 8 and Figure 9 shown, the air plate assembly 13 includes an air regulating plate 131, at least one window 132 located on the air regulating plate 131, and a sub-air plate 133 rotatably connected to the air regulating plate 131 to open or close the window 132. The sub-air plate 133 has a free state of covering the window 132 and an air outlet state of being rotated by an external force to open the window 132. When the sub-air plate 133 is in the free state, the air plate assembly 13 closes the air duct.

[0112] As Figure 9As shown, after the sub-air deflector 133 is subjected to the external force of the wind, it opens the window 132 to connect the upstream and downstream of the air duct 20. The wind enters the downstream from the window 132 and drives the downstream fan 121 to rotate. The control unit controls the rotation of the air deflector 131 according to the signal of the downstream sensor. After the air deflector 131 rotates, an air vent 1310 is formed between the edge of the air deflector 131 and the inner wall of the air duct 20 or between two adjacent air deflectors 131. The control unit adjusts the rotation angle of the air deflector 131 multiple times through the feedback of the downstream sensor, that is, adjusts the size of the air vent 1310, until the air outlet side of the air duct 20 conveys a gas with uniform wind speed to the odor detection device 30.

[0113] Further, a pair of contact parts 134 are provided at intervals at the lower end of the air deflector 131. A track 26 for the contact parts 134 to move is provided on the inner wall of the air duct 20. The control unit controls the contact parts 134 to move along a track, thereby driving the air deflector 131 to rotate. It can be understood that the control unit controlling the contact parts 134 can be that the control unit is communicatively connected to the contact parts 134 to directly control the contact parts 134, or there is a signal connection unit (not shown) in the track 26, the control unit is communicatively connected to the signal connection unit, and the control unit controls the signal connection unit to rotate and indirectly controls the movement of the contact parts 134. Specifically, the track 26 is provided on the inner wall of the return air duct.

[0114] Preferably, the control unit is communicatively connected to the signal connection unit, and the contact part 134 is in contact with the signal connection unit, and the control unit indirectly controls the movement of the contact part 134.

[0115] As a preferred embodiment of the present invention, as Figure 6 and Figure 7 shown, the track 26 and the signal connection unit in the track 26 are arc-shaped. The control unit controls the signal connection unit and drives the contact part 134 to move along the track 26. Since the track 26 is arc-shaped, the contact part 134 drives the air deflector assembly 13 to rotate during the process of moving along the track 26. An air vent 1310 is formed between the edge of the air deflector 131 and the inner wall of the air duct 20. The signal connection unit feeds back the rotation angle information of the air deflector 131 to the control unit so that the control unit can give the next instruction.

[0116] It can be understood that when there are multiple air deflector assemblies 13, the air vents 1310 are formed not only between the air deflector 131 and the inner wall of the air duct 20, but also between two adjacent air deflectors 131.

[0117] As another preferred embodiment of the present invention, the track 26 linearly extends along the axial or radial direction of the air duct 20. In this embodiment, a plurality of air plate assemblies 13 are provided. When the plurality of air plate assemblies 13 are coplanar, the air duct 20 is closed. The control unit controls the signal connection unit and drives the contact portion 134 to move along the track 26, thereby driving the air plate assembly 13 to move along the radial or axial direction of the air duct 20. An air vent 1310 is formed between the air regulating plate 131 and the inner wall of the air duct 20 or between two adjacent air regulating plates 131. At the same time, the signal connection unit collects the distance information of the linear movement of the air regulating plate 131 and feeds it back to the control unit so that the control unit can give the next instruction.

[0118] In this embodiment, the air vent 1310 formed between two adjacent air regulating plates 131 is formed by the two air regulating plates 131 being misaligned with each other along the radial or axial direction of the air duct. Similarly, the size of the air vent 1310 can be adjusted by adjusting the position of the air regulating plate 131.

[0119] Furthermore, the air plate assembly 13 includes a plurality of windows 132, and the plurality of windows 132 are arranged in a matrix on the air regulating plate 131. Correspondingly, the air plate assembly 13 includes a plurality of sub-air plates 133, and the sub-air plates 133 are arranged in a matrix. The windows 132 are uniformly arranged along the radial direction of the air duct 20, so that the wind speed of the gas entering the downstream through the plurality of windows 132 from the upstream of the air duct 20 is as close to a uniform state as possible.

[0120] The air plate assembly 13 further includes a fixed shaft (not shown) for rotatably connecting the sub-air plates 133. The sub-air plates 133 rotate relative to the fixed shaft under the external force of the wind to open or close the windows 132.

[0121] Preferably, the fixed shaft is fixed in the middle in the up and down direction of the window 132, and the middle in the up and down direction of the sub-air plate 133 cooperates with the fixed shaft. After the sub-air plate 133 is subjected to an external force, its upper and lower parts rotate simultaneously to adjust the size of the window 132. The air plate assembly 13 communicates the upstream and downstream of the air duct 20 through a plurality of windows 132, and can further make the wind speed entering the downstream of the air duct 20 uniform.

[0122] As another preferred embodiment of the present invention, as Figures 10 to 12As shown, the air deflector assembly 13 further includes an auxiliary window 136 spaced apart from the window 132, and an auxiliary air deflector assembly 137 cooperating with the auxiliary window 136. The control unit is communicatively connected to the auxiliary air deflector assembly 137 to control and adjust the rotation or movement of the auxiliary air deflector assembly 137, thereby adjusting the size of the covering of the auxiliary window 136. The provision of the auxiliary window 136 can perform multi-dimensional adjustment on the air deflector 131, and perform targeted adjustment on different positions along the radial direction of the air duct 20, so as to improve the efficiency of adjusting the wind speed downstream of the air duct 20.

[0123] In this embodiment, the window 132 is located in the middle of the air deflector 131 in the up and down direction. There are two rows of the auxiliary windows 136, which are respectively located on the upper side and the lower side of the window 132, and can adjust the uniformity of the gas transported to the downstream of the air duct 20 from multiple angles.

[0124] In a specific embodiment, as Figure 11 and Figure 12 shown, the auxiliary air deflector assembly 137 includes an auxiliary rotating shaft (not shown) extending up and down, and an auxiliary sub-air deflector 1372 fixedly connected to the auxiliary rotating shaft. A rotating groove 1373 for receiving the auxiliary rotating shaft is provided on the bottom wall of the auxiliary window 136. An auxiliary signal connection unit (not shown) in contact with the auxiliary rotating shaft is provided in the rotating groove 1373. The auxiliary signal connection unit is communicatively connected to the control unit. The control unit drives the auxiliary signal connection unit according to the feedback of the downstream inductor 121 and drives the auxiliary rotating shaft to rotate, thereby driving the auxiliary sub-air deflector 1372 to rotate. At the same time, the signal connection unit also collects the rotation angle of the auxiliary rotating shaft, and then determines whether further adjustment is needed.

[0125] In this embodiment, each auxiliary signal connection unit is connected in parallel through a communication line and then connected to the signal connection unit, and thus is communicatively connected to the control unit.

[0126] It can be understood that the control unit can separately control the auxiliary air deflector assembly 137 to adjust the size of the auxiliary window 136 according to requirements, can also separately control the rotation angle and moving distance of the air deflector 131 according to requirements, or can simultaneously control the auxiliary air deflector assembly 137 and the air deflector 131 to improve the adjustment efficiency.

[0127] The present invention also provides a control method for a refrigeration device. As Figures 13 to 15 shown, the above refrigeration device realizes the adjustment of the air volume and uniformity at the outlet of the air duct 20 by executing the above control method.

[0128] When the temperature inside the storage room is higher than a certain temperature, the fan 40 is started to supply air into the storage room, and at the same time, the air regulating device 10 is controlled to start working.

[0129] As Figures 13 to 15 shown, the control method includes: starting the fan 40, driving the sub-air plate 133 to rotate relative to the fixed shaft to open the window 132 to be in the air outlet state; obtaining the rotation speeds of a plurality of downstream fans 121 through the downstream sensor, and judging whether the rotation speeds of any two downstream fans 121 are the same; if not, entering the adjustment step, controlling the air plate assembly 13 to rotate or move to form a ventilation opening 1310 between the inner wall of the air duct 20 or between two adjacent air plate assemblies 13, and adjusting the size of the ventilation opening 1310 until the rotation speeds of all the downstream fans 121 are the same, and then maintaining the current size of the ventilation opening 1310 to continue supplying air.

[0130] The control method of the present invention feeds back the rotation speeds of the downstream fans 121 to the control unit through the downstream sensor, and then adjusts the size of the ventilation opening 1310 to change the air volume conveyed to the downstream of the air duct 20. By the downstream fans 121, it is monitored that the wind speed downstream is in a uniform state, and then air with a uniform wind speed can be conveyed into the storage room to meet the storage needs of users or the detection requirements of the odor detection device 30, thereby improving the user experience.

[0131] Before the downstream sensor detects the rotation speeds of the downstream fans 121, wait for the downstream fans 121 to rotate and last for a first period of time. After waiting for the rotating downstream fans 121 to be in a stable state, then obtain the rotation speeds of a plurality of downstream fans 121, so that the detection result of the downstream sensor is more representative and accurate.

[0132] As Figure 15 shown, the adjustment step includes: further determining whether the rotation speed difference between any two downstream fans 121 is greater than a first threshold. If so, entering the high-amplitude adjustment step; if not, entering the low-amplitude adjustment step. The air regulating plate 12 can be adjusted through the high-amplitude adjustment step and / or the low-amplitude adjustment step according to the actual situation, which can effectively improve the adjustment efficiency.

[0133] In the embodiment where the track 26 is arc-shaped, the high-amplitude adjustment step includes: determining the air plate assembly close to the downstream fan 121 with a lower rotation speed, and controlling the air plate assembly 13 to rotate, so that a ventilation opening 1310 is formed between the air plate assembly 13 and the inner wall of the air duct 26 or between two adjacent air plate assemblies 13. The air upstream of the air duct 20 can enter the downstream of the air duct 20 not only through the window 132, but also through the ventilation opening 1310 to specifically compensate for the downstream fans 121 with slow rotation speeds, thereby achieving the purpose of adjusting the wind speed.

[0134] In an embodiment where the track 26 is linear, generally a plurality of wind plate assemblies 13 are provided. The high-amplitude adjustment step includes: determining the wind plate assembly 13 near the downstream fan 121 with a lower rotational speed, and controlling the corresponding contact portion 134 of the wind plate assembly 13 to move along the track 26 to drive the linear movement of the wind plate assembly 13, so as to form a ventilation opening 1310 between the wind plate assembly 13 and the inner wall of the air duct 20 or between two adjacent wind plate assemblies 13; in addition to the air upstream of the air duct 20 entering the downstream of the air duct 20 through the window 132, it can also enter the downstream of the air duct 20 through the ventilation opening 1310 to specifically compensate for the downstream fan 121 with a slow rotational speed, thereby achieving the purpose of adjusting the wind speed.

[0135] In an embodiment where the wind plate assembly 13 further includes an auxiliary wind plate assembly 137, the high-amplitude adjustment step includes: determining the auxiliary sub-wind plate 1372 near the downstream fan 121 with a lower rotational speed, and controlling the rotation of the auxiliary sub-wind plate 1372 to adjust the size of the auxiliary window 136 opened by the auxiliary sub-wind plate 1372; in addition to the air upstream of the air duct 20 entering the downstream of the air duct 20 through the window 132, it can also enter the downstream of the air duct 20 through the auxiliary window 136 to specifically compensate for the downstream fan 121 with a slow rotational speed, thereby achieving the purpose of adjusting the wind speed.

[0136] The high-amplitude adjustment step of this embodiment can be combined with the above two embodiments respectively to jointly adjust the wind speed from the upstream to the downstream of the air duct 20.

[0137] In the above three embodiments, after adjusting the ventilation opening 1310 or the auxiliary window 136 once, wait for the downstream fan 121 to run for a certain period of time, and then re-obtain the rotational speed difference between any two downstream fans 121 after the rotation conditions of all downstream fans 121 are stable until the rotational speed difference between any two downstream fans 121 is not greater than the first threshold; then enter the low-amplitude adjustment step.

[0138] The low-amplitude adjustment step includes: controlling all the wind plate assemblies 13 to rotate or move slightly respectively, and finely adjusting until the rotational speeds of all downstream fans 121 are the same. At this time, it is considered that the air supply on the air outlet side of the air duct 20 is relatively uniform.

[0139] Based on any of the above adjustment steps, as Figure 14 shown, the control method further includes: after the rotational speeds of all downstream fans 121 are the same, controlling the odor detection device 30 to detect the air volume on the air outlet side of the air duct and obtain the first air volume detection value, and then comparing it with the air volume threshold to make the air volume entering the odor detection device 30 meet the test requirements, so as to improve the detection accuracy.

[0140] Specifically, if the first air volume detection value is greater than the first preset air volume value, the control fan 40 reduces the air volume; if the first air volume detection value is less than the second preset air volume value, the control fan 40 increases the air volume; if the first air volume detection value is between the first preset air volume value and the second preset air volume value, the control odor detection device 30 starts to detect, where the first preset air volume value is greater than the second preset air volume value.

[0141] Of course, the step of controlling the odor detection device 30 to detect the air volume at the air outlet of the air duct 20 can also directly detect the air volume at the air outlet after obtaining the rotation speed of the downstream fan 121. After the air volume at the air outlet meets the requirements, the uniformity at the air outlet of the air duct 20 is adjusted to reduce the number of times the air volume adjustment device 10 adjusts and improve the working efficiency of the whole process.

[0142] In the above, when controlling the fan 40 to reduce the air volume or controlling the fan 40 to increase the air volume, wait for the second preset time period to make the downstream fan 121 in a stable rotation state, and then obtain the rotation speed of the downstream fan 121 and determine whether the rotation speeds of any two of the downstream fans 121 are the same, and then enter the next process.

[0143] In summary, the control method for the refrigeration device of the present invention conveys gas to the downstream of the air duct 20 through the window 132, and adjusts the rotation or movement of the air volume adjustment plate 131 according to the rotation speed of the downstream fan 121 to change the size of the ventilation opening 1310, thereby changing the air volume conveyed to the downstream of the air duct 20. By determining that the rotation speeds of all the downstream fans 121 are the same, it is determined that the downstream of the air duct 20 is in a uniform air state, so that the air conveyed to the storage room or entering the odor detection device 30 is in a uniform speed state, meeting the storage needs of users and improving the detection accuracy of the odor detection device 30.

[0144] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0145] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and are not used to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for a refrigeration device, characterized in that, The control method includes: Starting the fan, driving the sub-air plate to rotate relative to the fixed shaft to open the window and be in the air outlet state; Obtaining the rotation speeds of several downstream fans through a downstream sensor, and determining whether the rotation speeds of any two downstream fans are the same; If not, enter the adjustment step, control the air plate assembly to rotate or move to form a ventilation opening with the inner wall of the air duct and adjust the size of the ventilation opening until the rotation speeds of all the downstream fans are the same, and then maintain the size of the current ventilation opening to continue air supply.

2. The control method for a refrigeration device according to claim 1, characterized in that, Before the downstream sensor detects the rotation speed of the downstream fan, wait for the downstream fan to rotate and last for a first duration.

3. The control method for a refrigeration device according to claim 1, characterized in that, The adjustment step includes: Further determining whether the rotation speed difference between any two downstream fans is greater than a first threshold; If so, enter the high-amplitude adjustment step; If not, enter the low-amplitude adjustment step.

4. The control method for a refrigeration device according to claim 3, characterized in that, The high-amplitude adjustment step includes: determining the air plate assembly close to the downstream fan with a lower rotation speed, and controlling the rotation of the air plate assembly so that a ventilation opening is formed between the air plate assembly and the inner wall of the air duct or between two adjacent air plate assemblies; Re-obtaining the rotation speed difference between any two downstream fans until the rotation speed difference between any two downstream fans is not greater than the first threshold; Then, enter the low-amplitude adjustment step again.

5. The control method for a refrigeration device according to claim 3, characterized in that, The high-amplitude adjustment step includes: determining the air plate assembly close to the downstream fan with a lower rotation speed, and controlling the corresponding contact part of the air plate assembly to move along the track to drive the linear movement of the air plate assembly, and a ventilation opening is formed between the air plate assembly and the inner wall of the air duct or between two adjacent air plate assemblies; Re-obtaining the rotation speed difference between any two downstream fans until the rotation speed difference between any two downstream fans is not greater than the first threshold; Then, enter the low-amplitude adjustment step again.

6. The control method for a refrigeration device according to claim 3, characterized in that, The high-amplitude adjustment step includes: determining the auxiliary sub-air plate close to the downstream fan with a lower rotation speed, and controlling the rotation of the auxiliary sub-air plate to adjust the size of the auxiliary window opened by the auxiliary sub-air plate; Re-obtaining the rotation speed difference between any two downstream fans until the rotation speed difference between any two downstream fans is not greater than the first threshold; Then, enter the low-amplitude adjustment step again.

7. The control method for a refrigeration device according to claim 3, characterized in that, The low-amplitude adjustment step includes: controlling all the air plate assemblies to rotate or move slightly respectively, and finely adjusting until the rotation speeds of all the downstream fans are the same.

8. The control method for a refrigeration device according to any one of claims 1 to 7, characterized in that, After obtaining the rotation speed of the downstream fan or after the rotation speeds of all the downstream fans are the same, control the odor detection device to detect the air volume on the air outlet side of the air duct and obtain a first air volume detection value, and then compare it with the air volume threshold; If the first air volume detection value is greater than the first preset air volume value, control the fan to reduce the air volume; If the first air volume detection value is less than the second preset air volume value, control the fan to increase the air volume; If the first air volume detection value is between the first preset air volume value and the second preset air volume value, control the odor detection device to start detection, where the first preset air volume value is greater than the second preset air volume value.

9. The control method for a refrigeration device according to claim 8, characterized in that, Control the fan to reduce the air volume or control the fan to increase the air volume and last for a second preset duration, and then re-determine whether the rotation speeds of any two of the downstream fans are the same.

10. A refrigeration device, characterized in that, The refrigeration equipment executes the control method for refrigeration equipment according to any one of claims 1 to 9.

Images