Refrigeration equipment, control method, controller and computer readable storage medium

Abstract

The invention discloses refrigeration equipment, a control method, a controller and a readable storage medium, and belongs to the technical field of refrigeration, the refrigeration equipment comprises a box body, an evaporator and a fan assembly, a first chamber, a second chamber and a freezing air duct are arranged in the box body, and the freezing air duct is provided with a first air supply outlet and a second air supply outlet; according to the refrigeration equipment, the evaporator is arranged in the freezing air duct, the first fan supplies air to the first chamber through the first air opening, the second fan supplies air to the second chamber through the second air opening, the air supply mode that the first fan and the second fan replace a single fan is adopted, the air supply efficiency is improved, and on the premise that the air volume and cooling capacity circulation are guaranteed, the refrigeration efficiency is improved. Therefore, the requirement for the rotating speed of the first fan and the second fan can be lowered, the first fan and the second fan can operate at the low rotating speed, and aerodynamic noise can be lowered.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a refrigeration device, a control method for a refrigeration device, a controller and a computer-readable storage medium. Background Art

[0002] The aerodynamic noise of the refrigerator greatly affects the user's hearing during use and in standby mode, and is one of the most important interactive experiences of the refrigerator. In order to ensure the cold circulation of the entire air duct, it is usually necessary to arrange a large-sized fan in the freezing air duct where the evaporator is located, and use the fan to supply air from the freezer to the variable temperature room and the cold storage room. Due to the long distance between the various rooms, the fan needs to run at a high speed to obtain high static pressure for air flow transmission, which leads to an increase in the aerodynamic noise of the air duct. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a refrigeration device, which enables the fan to run at a low speed, which is conducive to reducing aerodynamic noise.

[0004] The present invention also provides a control method, a controller and a computer-readable storage medium applicable to the above refrigeration equipment.

[0005] A refrigeration device according to a first aspect of an embodiment of the present invention comprises: a box body, in which a first chamber, a second chamber and a freezing air duct are provided, the freezing air duct is provided with a first air supply port and a second air supply port, the first air supply port is communicated with the first chamber, and the second air supply port is communicated with the second chamber; an evaporator, arranged in the freezing air duct; a fan assembly, comprising a first fan and a second fan, the first fan supplies air to the first chamber through the first air supply port, and the second fan supplies air to the second chamber through the second air supply port.

[0006] The refrigeration device according to the embodiment of the present invention has at least the following beneficial effects:

[0007] The refrigeration equipment arranges the evaporator in the freezing air duct, the first fan supplies air to the first chamber through the first air outlet, and the second fan supplies air to the second chamber through the second air outlet. The first fan and the second fan are used to replace the air supply mode of a single fan, thereby increasing the air supply efficiency of the first chamber and the second chamber. Under the premise of ensuring the circulation of air volume and cooling capacity, the speed requirements for the first fan and the second fan can be reduced, so that the first fan and the second fan can run at a low speed, which is beneficial to reducing aerodynamic noise.

[0008] According to some embodiments of the present invention, the first fan is disposed in the refrigeration air duct, and the first fan and a portion of the evaporator are arranged side by side along the width direction of the refrigeration air duct.

[0009] According to some embodiments of the present invention, the evaporator includes a first heat exchange part and a second heat exchange part connected to each other. Along the width direction of the refrigeration air duct, the width of the first heat exchange part is greater than the width of the second heat exchange part, and the second heat exchange part is arranged side by side with the first fan.

[0010] According to some embodiments of the present invention, the first chamber includes a freezing chamber, the freezing air duct is located on the back side of the freezing chamber, the first air supply outlet is opened on the back wall of the freezing chamber, the first fan is an axial flow fan, and the second heat exchange part and the first air supply outlet are distributed along the axial direction of the first fan.

[0011] According to some embodiments of the present invention, along the axial direction of the first fan, a ratio of the width of the first fan to the width of the freezing air duct is in a range of 10% to 15%.

[0012] According to some embodiments of the present invention, the width of the refrigeration air duct ranges from 50 mm to 70 mm.

[0013] According to some embodiments of the present invention, the second fan is an axial flow fan, the second fan is arranged at the bottom of the refrigeration air duct, and the axial direction of the second fan is perpendicular to the axial direction of the first fan.

[0014] According to some embodiments of the present invention, the first heat exchange part includes a first heat exchange tube and a plurality of first fins fixed to the first heat exchange tube, the second heat exchange part includes a second heat exchange tube and a plurality of second fins fixed to the second heat exchange tube, and the first heat exchange tube and the second heat exchange tube are integrally bent.

[0015] According to a control method for a refrigeration device according to a second aspect of an embodiment of the present invention, the refrigeration device comprises: a box body, in which a first chamber, a second chamber and a freezing air duct are provided, the freezing air duct is provided with a first air supply port and a second air supply port, the first air supply port is communicated with the first chamber, the second air supply port is communicated with the second chamber, the first chamber comprises a freezing chamber, and the second chamber comprises a refrigerating chamber; an evaporator, arranged in the freezing air duct; a fan assembly, comprising a first fan and a second fan, the first fan supplies air to the first chamber through the first air supply port, and the second fan supplies air to the second chamber through the second air supply port;

[0016] The control method comprises:

[0017] Acquiring the freezing temperature of the freezing chamber, the refrigerating temperature of the refrigerating chamber, and the operating noise of the refrigerating equipment;

[0018] When the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is greater than or equal to a preset value, at least one of the first fan and the second fan is controlled to stop or reduce the speed.

[0019] The control method of the refrigeration equipment according to the embodiment of the present invention has at least the following beneficial effects:

[0020] The control method is applicable to the refrigeration equipment of the embodiment of the present invention, the first fan supplies air to the first chamber through the first air outlet, and the second fan supplies air to the second chamber through the second air outlet, and the first fan and the second fan are used to replace the air supply mode of the single fan. During the operation of the refrigeration equipment, when the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is greater than or equal to the preset value, at least one of the first fan and the second fan is controlled to stop or reduce the speed. In this way, under the premise of ensuring the circulation of air volume and cold volume, the speed requirements for the first fan and the second fan can be reduced, so that the first fan and the second fan can be operated at a low speed or stopped, which is conducive to reducing aerodynamic noise.

[0021] According to some embodiments of the present invention, the control method further comprises:

[0022] In response to a start-up control signal of the refrigeration equipment, controlling the first fan to operate at a first preset speed, and controlling the second fan to operate at a second preset speed;

[0023] When the freezing temperature is higher than the preset freezing temperature, controlling the first fan to increase the rotation speed; and

[0024] When the refrigeration temperature is higher than the preset refrigeration temperature, the second fan is controlled to increase its rotation speed.

[0025] According to some embodiments of the present invention, the first fan and the second fan each have a plurality of speed gears, and the control method further includes:

[0026] Constructing a preset relationship table, wherein the preset relationship table is used to indicate that different preset freezing temperatures correspond to the first preset speeds at different speed gears, and different preset refrigeration temperatures correspond to the second preset speeds at different speed gears;

[0027] The controlling the first fan to operate at a first preset speed includes:

[0028] According to the current preset freezing temperature and the preset relationship table, determining the speed value of the corresponding speed gear to be the first preset speed;

[0029] Controlling the first fan to run at the first preset speed;

[0030] The controlling the second fan to operate at a second preset speed includes:

[0031] According to the current preset refrigeration temperature and the preset relationship table, determining the speed value of the corresponding speed gear to be the second preset speed;

[0032] The second fan is controlled to run at the second preset speed.

[0033] According to some embodiments of the present invention, the preset relationship table is further used to characterize the first speed reduction amplitude corresponding to the different speed gears of the first fan, and the second speed reduction amplitude corresponding to the different speed gears of the second fan, and the second speed reduction amplitude is greater than the first speed reduction amplitude;

[0034] The controlling at least one of the first fan and the second fan to reduce a rotation speed includes:

[0035] When controlling the first fan to reduce its speed, determining the first speed reduction amplitude corresponding to the current speed gear according to the preset relationship table, and gradually reducing the speed of the first fan by the first speed reduction amplitude;

[0036] When controlling the second fan to reduce its speed, the second speed reduction amplitude corresponding to the current speed gear is determined according to the preset relationship table, and the speed of the second fan is gradually reduced by the second speed reduction amplitude.

[0037] According to some embodiments of the present invention, the preset relationship table is further used to characterize a first speed increase amplitude corresponding to different speed gears of the first fan, and a second speed increase amplitude corresponding to different speed gears of the second fan, wherein the second speed increase amplitude is greater than the first speed increase amplitude;

[0038] The controlling the first fan to increase the rotation speed includes:

[0039] Determining the first speed increase amplitude corresponding to the current speed gear according to the preset relationship table, and gradually increasing the speed of the first fan by the first speed increase amplitude;

[0040] The controlling the second fan to increase the rotation speed includes:

[0041] Determine the second speed increase amplitude corresponding to the current speed gear according to the preset relationship table, and gradually increase the speed of the second fan by the second speed increase amplitude. According to some embodiments of the present invention, the control method further includes:

[0042] When the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is less than the preset value, the first fan and the second fan are controlled to maintain the current rotation speed or reduce the rotation speed.

[0043] According to the third aspect of an embodiment of the present invention, a controller for a refrigeration device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the control method for the refrigeration device as described in the second aspect of the above embodiment is implemented.

[0044] A refrigeration device according to a fourth aspect of an embodiment of the present invention comprises the controller described in the third aspect of the above embodiment.

[0045] According to the fifth aspect of the embodiment of the present invention, a computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute the control method of the refrigeration equipment as described in the second aspect of the embodiment.

[0046] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic diagram of the internal structure of a refrigerator according to an embodiment of the present invention;

[0048] Figure 2 is a schematic diagram of the internal structure of a refrigerator according to another embodiment of the present invention;

[0049] Figure 3 is a control flow chart of the first fan and the second fan in one embodiment of the present invention;

[0050] Figure 4 is a flow chart of a refrigerator control method according to an embodiment of the present invention;

[0051] Figure 5 is a flow chart of steps for determining a first preset speed and a second preset speed in one embodiment of the present invention;

[0052] Figure 6 is a flow chart of steps for controlling the first fan and the second fan to reduce the rotation speed in one embodiment of the present invention;

[0053] Figure 7 is a flow chart of steps for controlling the first fan and the second fan to increase the rotation speed in one embodiment of the present invention;

[0054] Figure 8 is a table of fan preset speed ranges corresponding to different temperatures in the freezing chamber and the refrigerating chamber in one embodiment of the present invention;

[0055] Fig. 9 This is a table of speeds and sound pressure levels corresponding to different speed gears of the dual fans in one embodiment of the present invention;

[0056] Fig.10 is a flow chart of a refrigerator control method according to another embodiment of the present invention.

[0057] Reference numerals:

[0058] Box body 100; first chamber 101; second chamber 102; freezing chamber 110; freezing door 111; first temperature sensor 112; variable temperature chamber 120; through hole 121; variable temperature return air outlet 122; refrigerating chamber 130; refrigerating door 131; second temperature sensor 132; freezing air duct 140; first air supply outlet 141; second air supply outlet 142; freezing return air outlet 143; air inlet 144; return air duct 150;

[0059] Evaporator 200; first heat exchange part 210; second heat exchange part 220;

[0060] Fan assembly 300; first fan 310; second fan 320;

[0061] Microphone 400;

[0062] Refrigerator 1000. DETAILED DESCRIPTION

[0063] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0064] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "upper", "lower", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0065] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0066] In the description of the present invention, it should be noted that the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0067] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0068] Reference Figure 1 As shown, the refrigeration device provided by the embodiment of the present invention may be a refrigerator 1000, a freezer, etc., and the refrigerator 1000 is specifically used as an example for description below.

[0069] Reference Figure 1 As shown, the refrigerator 1000 includes a housing 100, an evaporator 200 and a fan assembly 300. The housing 100 is provided with a first compartment 101, a second compartment 102 and an air duct structure, wherein the first compartment 101 includes a freezing compartment 110, and the second compartment 102 includes a variable temperature chamber 120 and a refrigerating compartment 130. The freezing compartment 110, the variable temperature chamber 120 and the refrigerating compartment 130 are sequentially arranged from top to bottom, and the freezing compartment 110 and the variable temperature chamber 120, as well as the variable temperature chamber 120 and the refrigerating compartment 130 are separated by a middle partition respectively. The air duct structure is located in the housing 100, and the air duct structure includes a freezing air duct 140, and the evaporator 200 is installed in the freezing air duct 140. The fan assembly 300 includes a first fan 310 and a second fan 320 , wherein the first fan 310 is used to supply air to the freezing chamber 110 , and the second fan 320 is used to supply air to the temperature-changing chamber 120 and the refrigerating chamber 130 .

[0070] Specifically, the freezing air duct 140 is provided with a first air supply port 141 and a second air supply port 142, the first air supply port 141 is connected to the freezing chamber 110, the second air supply port 142 is connected to the variable temperature chamber 120, and a through hole 121 can be opened on the middle partition between the variable temperature chamber 120 and the refrigerating chamber 130, and the variable temperature chamber 120 and the refrigerating chamber 130 are connected through the through hole 121; when the refrigerator 1000 is in operation, the air flow generates cold air after heat exchange through the evaporator 200, the first fan 310 delivers cold air to the freezing chamber 110 through the first air supply port 141, the second fan 320 delivers cold air to the variable temperature chamber 120 through the second air supply port 142, and the cold air can pass through the through hole 121 and flow from the variable temperature chamber 120 to the refrigerating chamber 130, so that the cold energy can be distributed to the freezing chamber 110, the variable temperature chamber 120 and the refrigerating chamber 130, so as to realize refrigeration of each compartment.

[0071] It should be noted that, in some embodiments, the refrigerator 1000 only includes a freezer compartment 110 and a refrigerator compartment 130, and the variable temperature chamber 120 may not be provided. That is, the first compartment 101 is the freezer compartment 110, and the second compartment 102 is the refrigerator compartment 130. In this way, the second fan 320 directly supplies air to the refrigerator compartment 130 through the second air supply port 142, and the specific setting is performed according to actual application requirements.

[0072] Reference Figure 1 As shown, the refrigerator 1000 of the embodiment adopts a double-door design, and the box body 100 is provided with a refrigerating door 131 and a freezing door 111. The freezing door 111 can be used to open or close the freezing chamber 110, and the refrigerating chamber 130 and the variable temperature chamber 120 can be opened or closed by the refrigerating door 131. Of course, this is only an example, and the compartments in the box body 100 are not limited to the above structure. The freezing chamber 110 can also be arranged below the refrigerating chamber 130, and the second air supply port 142 can also be directly connected to the refrigerating chamber 130, and the cold air flows through the refrigerating chamber 130 and the variable temperature chamber 120 in sequence through the second air supply port 142.

[0073] In the related art, the refrigerator usually uses a large-diameter axial flow fan to supply air from the freezer compartment 110 to the temperature-changing chamber 120 and the refrigerating chamber 130. Since the refrigerating chamber 130 is far away from the evaporator 200, in order to ensure that there is enough cold air circulation in the refrigerating chamber 130, the fan needs to run at a high speed to obtain a high static pressure for air flow transportation, but this will cause the aerodynamic noise of the air duct to increase. It is understandable that under normal circumstances, the larger the size of the fan and the higher the power, the greater the aerodynamic noise generated during operation.

[0074] It can be understood that the embodiment of the present invention adopts the first fan 310 and the second fan 320 to replace the air supply method of a single fan, that is, the freezer compartment 110 and the refrigerator compartment 130 adopt independent fans for air supply, thereby increasing the air supply efficiency of the freezer compartment 110 and the refrigerator compartment 130. Under the premise of ensuring the air volume and cold air circulation, the diameter size of the first fan 310 and the second fan 320 can be reduced, so the rotation speed requirement of the first fan 310 and the second fan 320 can be reduced, so that the first fan 310 and the second fan 320 can run at a low speed, which is beneficial to reducing aerodynamic noise and achieving the purpose of noise reduction.

[0075] Reference Figure 1 As shown, a specific example is used for explanation. In the embodiment, the freezing air duct 140 is located on the back side of the freezing chamber 110. Considering the limited space of the freezing air duct 140, when a single fan is installed in the freezing air duct in the related technology, the axial direction of the fan is consistent with the width direction of the freezing air duct, the axial width of the fan is smaller than the width of the freezing air duct, the width range of the fan can be 30mm to 40mm, and the diameter range of the fan can be 100mm to 150mm.

[0076] When the size of the freezing air duct 140 remains unchanged, in the embodiment of the present invention, the first fan 310 is used in the freezing air duct 140 to replace a single large-sized fan, and the second fan 320 is added to supply air to the variable temperature chamber 120 and the cold storage chamber 130 to increase the static pressure of the airflow. The diameter of the first fan 310 and the second fan 320 can be set to 40mm to 50mm, and the width can be set to 6mm to 10mm. It can be understood that the first fan 310 and the second fan 320 are smaller in size, have smaller power and rotation speed, meet the requirements of the freezing chamber 110, the cold storage chamber 130 and the variable temperature chamber 120 have sufficient cooling capacity, and can reduce noise.

[0077] It should be noted that Figure 1 In the illustrated embodiment, the first fan 310 and the second fan 320 have the same size, wherein the second fan 320 is horizontally arranged at the bottom of the freezing air duct 140 and located at the second air outlet, and does not occupy the space of the freezing air duct 140, so as to facilitate the delivery of cold air into the variable temperature room 120. In some embodiments, the sizes of the first fan 310 and the second fan 320 can also be set to be different, so that the installation is more flexible, and the specific size can be selected according to the actual application requirements.

[0078] Reference Figure 1 As shown, the first fan 310 is an axial flow fan, the first air supply port 141 is opened on the back wall of the freezing chamber 110, and the first fan 310 and the first air supply port 141 are arranged opposite to each other, so that the first fan 310 can deliver cold air to the freezing chamber 110 through the first air supply port 141; since the width of the first fan 310 is smaller than the width of the freezing air duct 140, in order to improve the refrigeration effect, part of the heat exchange structure of the evaporator 200 is extended toward the first fan 310, and is arranged side by side with the first fan 310 along the width direction of the freezing air duct 140, that is, a part of the evaporator 200 is located below the first fan 310, and the other part is arranged side by side with the first fan 310, so that along the axial direction of the first fan 310, the first fan 310 can drive the airflow to enter the first air supply port 141 after heat exchange through the evaporator 200, so that the heat exchange is more efficient, the refrigeration efficiency is effectively improved, and the cooling capacity requirement of the freezing chamber 110 can be met.

[0079] It can be understood that since the size and speed of the first fan 310 are relatively small, the gap between the first fan 310 and the refrigeration duct 140 is larger. By arranging part of the heat exchange structure of the evaporator 200 side by side with the first fan 310, it is beneficial to increase the cooling capacity and reduce the impact of the first fan 310 running at a low speed on the cooling capacity, thereby ensuring that the cooling capacity can be consistent with the state of a high-speed fan. For example, in the related art, the fan needs to reach a speed of more than 2200rpm (revolutions per minute) to meet the requirement of obtaining high static pressure for airflow transportation. In the embodiment of the present invention, the evaporator 200 has a higher heat exchange efficiency by adding a heat exchange structure side by side with the first fan 310. The rotation speed of the first fan 310 below 1700rpm can also meet the freezing temperature requirements of the freezer chamber 110.

[0080] Reference Figure 1 As shown, in some embodiments, the evaporator 200 includes a first heat exchange portion 210 and a second heat exchange portion 220, the first heat exchange portion 210 is located below the first fan 310, the second heat exchange portion 220 and the first fan 310 are arranged side by side, and the second heat exchange portion 220 is connected to the first heat exchange portion 210, that is, the second heat exchange portion 220 and the first air supply port 141 are distributed along the axial direction of the first fan 310. It can be understood that along the width direction of the freezing air duct 140, the width of the first heat exchange portion 210 is greater than the width of the second heat exchange portion 220. Under the condition of the same height dimension, the first heat exchange portion 210 has a larger volume, and the evaporator 200 has a higher heat exchange efficiency.

[0081] It should be noted that in the related art, due to the large size of a single fan, the evaporator body and the fan are arranged from top to bottom, and the evaporator body cannot be arranged side by side with the fan. The specific size of the evaporator body can be designed according to the size of the freezing air duct 140 and the cooling capacity required. Figure 1 As shown, the first heat exchange part 210 is equivalent to the evaporator body in the related art. The second heat exchange part 220 is added on the basis of the evaporator body, that is, the overall size of the evaporator 200 is larger. In this way, by reducing the rotation speed of the first fan 310 and increasing the volume of the evaporator 200, noise reduction and energy consumption can be achieved while ensuring that the cooling capacity meets the demand.

[0082] Reference Figure 1 As shown, the freezer chamber 110 is also provided with a freezing return air port 143, which is located on the back wall of the freezer chamber 110 and below the first air supply port 141. The airflow enters the freezer chamber 110 from the first air supply port 141, and then flows back to the freezing air duct 140 through the freezing return air port 143. The airflow can exchange heat with the first heat exchange part 210 and the second heat exchange part 220 in the freezing air duct 140, thereby ensuring the cold circulation of the entire freezing air duct 140. Figure 1The arrow direction in the middle freezing chamber 110 is the air flow circulation direction.

[0083] It is understandable that the sum of the widths of the first fan 310 and the second heat exchange unit 220 needs to be smaller than the width of the freezing air duct 140. In order to ensure that there is enough space in the freezing air duct 140 to install the first fan 310 and the second heat exchange unit 220, the size of the first fan 310 is selected according to the width of the freezing air duct 140 in the embodiment. If the size of the first fan 310 is too small, it will affect the air supply efficiency, and if it is too large, it will generate unnecessary aerodynamic noise. Specifically, in some embodiments, the ratio of the width of the first fan 310 to the width of the freezing air duct 140 is in the range of 10% to 15%, that is, the width of the first fan 310 is not less than 10% of the width of the freezing air duct 140, and not more than 15% of the width of the freezing air duct 140.

[0084] Taking the width of the freezing air duct 140 as 56.8 mm as an example, the width of the first fan 310 can be selected to be 5.7 mm, 6.8 mm, 8.5 mm, etc., which meets the above-mentioned ratio range and can cooperate with the second heat exchange part 220 to achieve a better heat exchange effect. Of course, this is only an example, and the width of the freezing air duct 140 is not limited to the above size. Considering that the freezing air duct 140 is located on the back side of the freezing chamber 110 and its space is limited, the width of the freezing air duct 140 in the embodiment ranges from 50 mm to 70 mm. For example, the freezing air duct 140 can be 50 mm, 60 mm, 65 mm, etc.

[0085] Reference Figure 1 As shown, it should be noted that the second fan 320 is also an axial flow fan, the second air supply port 142 is opened at the bottom of the freezing air duct 140 and penetrates the top wall of the variable temperature chamber 120, the second fan 320 is installed at the second air supply port 142, and the axial direction of the second fan 320 is arranged along the height direction of the freezing air duct 140, so that the axial direction of the second fan 320 is perpendicular to the axial direction of the first fan 310. Under the driving action of the second fan 320, the airflow is sent from top to bottom to the variable temperature chamber 120 after heat exchange through the evaporator 200, and does not affect the air supply of the first fan 310. Since the diameter of the second fan 320 is 40mm to 50mm, which does not exceed the width of the freezing air duct 140, it is more reasonable to install the second fan 320 when it is placed horizontally, and the air supply efficiency is higher.

[0086] In addition, the variable temperature chamber 120 is provided with a variable temperature return air outlet 122, the refrigerating chamber 130 is provided with a refrigerating return air outlet, and a return air duct 150 is further provided in the box body 100. The refrigerating return air outlet and the variable temperature return air outlet 122 are both connected with the freezing air duct 140 through the return air duct 150, and the freezing air duct 140 is provided with an air inlet 144 connected with the return air duct 150; the second fan 320 transports cold air to the variable temperature chamber 120 through the second air supply outlet 142, and part of the cold air enters the return air duct 150 through the variable temperature return air outlet 122 after passing through the variable temperature chamber 120, and flows back to the freezing air duct 140 through the return air duct 150; part of the cold air will enter the refrigerating chamber 130 through the through hole 121, and enter the return air duct 150 through the refrigerating return air outlet after passing through the refrigerating chamber 130, and then flow back to the freezing air duct 140, thereby realizing the circulation of air volume and cold amount. Figure 1 The arrow directions in the intermediate temperature-changing chamber 120 and the refrigerating chamber 130 are airflow circulation directions.

[0087] In some embodiments, the first heat exchange part 210 includes a first heat exchange tube and a plurality of first fins (not shown in the drawings), the plurality of first fins are arranged along the length direction of the freezing air duct 140, the first heat exchange tube is bent to form a plurality of first curved tube sections, the plurality of first curved tube sections are passed through the plurality of first fins, so that the first fins are fixedly connected to the first heat exchange tube; the second heat exchange part 220 includes a second heat exchange tube and a plurality of second fins (not shown in the drawings), the second heat exchange tube is bent to form a plurality of second curved tube sections, the plurality of second curved tube sections are passed through the plurality of second fins, so that the second fins are fixedly connected to the second heat exchange tube. Since the volume of the first heat exchange part 210 is larger than that of the second heat exchange part 220, and the size of the first fin is larger than that of the second fin, the number of the first curved tube sections can be set to be larger than the number of the second curved tube sections.

[0088] The first fin and the second fin can both be aluminum fins, which have high heat dissipation efficiency and light weight. Of course, it is not limited to this, and the first fin and the second fin can also be steel fins or copper fins. In addition, the structure of the first fin and the second fin can be straight or corrugated, etc., which is selected according to the actual application.

[0089] It should be noted that the first heat exchange tube and the second heat exchange tube are bent as one piece. Specifically, the first heat exchange tube is first bent to form a plurality of first bending sections, and then extended upward and bent to form a plurality of second bending sections. In this way, the second heat exchange section 220 can be added on the basis of the first heat exchange section 210, which is easy to manufacture and low in cost.

[0090] Taking into account that different rooms have different requirements for cooling capacity distribution, the first fan 310 and the second fan 320 are usually required to be designed with different rotational speeds. However, this may lead to unreasonable rotational speed coordination between the first fan 310 and the second fan 320, resulting in excessive cooling capacity distribution. In addition, the different rotational speed settings of the two fans may lead to prominent aerodynamic noise problems.

[0091] In order to solve the above problems, the refrigerator control method proposed in the embodiment of the present invention is applicable to the refrigerator 1000 of the above embodiment, which can reasonably distribute the cooling capacity and effectively reduce the aerodynamic noise.

[0092] refer to Figures 3 to 10 The control method of the refrigerator according to the embodiment of the present invention is described. The specific structure of the refrigerator 1000 can be found in Figure 1 and Figure 2 The embodiments shown will not be described in detail here, and the control method of the refrigerator will be explained below with a specific example.

[0093] Reference Figure 3 As shown, in some embodiments, the control method includes but is not limited to the following steps:

[0094] Step S100, obtaining the freezing temperature of the freezing chamber 110, the refrigerating temperature of the refrigerating chamber 130 and the operating noise of the refrigerator 1000;

[0095] Step S200, when the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is greater than or equal to the preset value, at least one of the first fan 310 and the second fan 320 is controlled to stop or reduce the speed.

[0096] Combination Figure 2 It can be understood that the control method of the embodiment controls the refrigerator 1000, aiming to optimize the optimal speed matching of the dual fans. Specifically, a first temperature sensor 112 and a second temperature sensor 132 are provided in the box body 100. The first temperature sensor 112 is located in the freezing chamber 110 and is used to detect the temperature of the freezing chamber 110; the second temperature sensor 132 is located in the refrigerating chamber 130 and is used to detect the temperature of the refrigerating chamber 130. Therefore, in step S100, the specific method of obtaining the freezing temperature of the freezing chamber 110 and the refrigerating temperature of the refrigerating chamber 130 is to detect the freezing temperature using the first temperature sensor 112 and the refrigerating temperature using the second temperature sensor 132.

[0097] Since the freezing chamber 110 and the refrigerating chamber 130 require different low temperature environments, the control method of the embodiment of the present invention needs to determine whether the freezing temperature reaches the freezing preset temperature and whether the refrigerating temperature reaches the refrigerating preset temperature. The embodiment also includes a detector, through which the operating noise of the refrigerator 1000 is collected. The detector can be installed at a position approximately 30 cm away from the box body 100, for example, it can be fixed at a relatively fixed position on the wall or the surrounding environment, and the collected operating noise is compared with the preset value to determine whether the operating noise is too high.

[0098] In step S200, when the freezing temperature reaches the freezing preset temperature and the refrigeration temperature reaches the refrigeration preset temperature, it indicates that the freezing chamber 110 and the refrigeration chamber 130 are allocated sufficient cooling capacity, and when the operating noise is greater than or equal to the preset value, it indicates that the operating noise is high and affects the user's use. At this time, the first fan 310 and the second fan 320 are controlled to reduce the rotation speed. In this way, under the premise of ensuring the air volume and cooling circulation, the first fan 310 and the second fan 320 can operate at a low rotation speed, which is beneficial to reducing aerodynamic noise and achieving the purpose of noise reduction.

[0099] In some embodiments, after the freezing temperature reaches the freezing preset temperature and the refrigeration temperature reaches the refrigeration preset temperature, the cooling capacity of the compartment is met, and the operating noise is greater than or equal to the preset value at this time, the first fan 310 and the second fan 320 can also be controlled to stop, so that the noise can be reduced to the greatest extent. The stop time is specifically determined according to the preset freezing preset temperature and the refrigeration preset temperature. For example, after the first fan 310 is stopped, when the temperature of the freezer compartment 110 rises above the freezing preset temperature, the first fan 310 is restarted to supply air to avoid the freezer compartment 110 from being overheated.

[0100] To illustrate with a specific example, the preset freezing temperature Td is set to -20°C (minus 20°C), the preset refrigeration temperature Tc is set to 6°C, the preset value F is set to 30dBA, the first fan 310 and the second fan 320 are operated at the default speed, when the detected freezing temperature T1 reaches -20°C, the refrigeration temperature T2 reaches 6°C, and the operating noise reaches 30dBA, the speed of the first fan 310 and the second fan 320 is controlled to be reduced, so that the requirements of the cooling capacity can be met and the purpose of noise reduction can be achieved. Of course, this is only an example, and the preset freezing temperature, the preset refrigeration temperature and the preset value can be selected according to the application requirements.

[0101] Of course, this is only an example. In some embodiments, when the freezer 110 and the refrigerator 130 are allocated enough cold air and the operating noise is greater than or equal to a preset value, one of the first fan 310 and the second fan 320 can be controlled to reduce the speed or stop so that the operating noise is reduced to a level below the preset value. In other words, it is not limited to reducing the speed of both fans at the same time or stopping them at the same time.

[0102] It should be noted that the above steps are executed by the controller of the refrigerator 1000, and the controller is connected to the first temperature sensor 112 and the second temperature sensor 132, and is configured to obtain the freezing temperature of the freezer chamber 110 and the refrigeration temperature of the refrigeration chamber 130. When the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is greater than or equal to the preset value, at least one of the first fan 310 and the second fan 320 is controlled to stop or reduce the speed.

[0103] It should be noted that, in some embodiments, the detector used is a microphone 400, and the microphone 400 can collect sound pressure level signals. The higher the sound pressure level, the greater the noise. In other words, judging the size of the operating noise and the preset value can be understood as comparing the sound pressure level collected by the microphone 400 with the preset value, so as to judge whether the operating noise of the refrigerator 1000 is too loud.

[0104] It can be understood that the operating noise of the refrigerator 1000 mainly includes aerodynamic noise and compressor noise. With respect to aerodynamic noise, the embodiment of the present invention adopts the first fan 310 and the second fan 320 to replace the air supply mode of a single fan. The variable temperature chamber 120 and the refrigerating chamber 130 adopt independent fans for air supply, thereby increasing the air supply efficiency of the variable temperature chamber 120 and the refrigerating chamber 130. Under the premise of ensuring the circulation of air volume and cold volume, the sizes of the first fan 310 and the second fan 320 can be reduced, and further, according to the temperature requirements of the freezing chamber 110 and the refrigerating chamber 130, the rotation speeds of the two fans can be flexibly adjusted, so that the first fan 310 and the second fan 320 can run at a low speed, thereby reducing aerodynamic noise, thereby reducing the operating noise of the refrigerator 1000.

[0105] Reference Figure 4 As shown, in some embodiments, the control method further includes but is not limited to the following steps:

[0106] Step S300, in response to a start control signal of the refrigerator 1000, the first fan 310 is controlled to operate at a first preset speed, and the second fan 320 is controlled to operate at a second preset speed.

[0107] It can be understood that the first preset speed is the default speed of the first fan 310, the second preset speed is the default speed of the second fan 320, and the start control signal of the refrigerator 1000 can be a power-on signal after shutdown or a restart signal after shutdown during normal operation. When the refrigerator 1000 is started, the first fan 310 and the second fan 320 are controlled to run at the default speeds respectively. Since the freezing chamber 110, the variable temperature chamber 120 and the refrigerating chamber 130 have different requirements for cold distribution, the first preset speed and the second preset speed in the embodiment can be set differently.

[0108] For example, the first preset speed is 1800 rpm, and the second preset speed is 1600 rpm, and the above step S300 further includes:

[0109] Step S310, when the refrigerator 1000 is turned on, the first fan 310 is controlled to run at a rotation speed of 1800 rpm, and the second fan 320 is controlled to run at a rotation speed of 1600 rpm.

[0110] Of course, this is only an example, and the first preset speed and the second preset speed are not limited to the above speeds, and can be selected according to actual application requirements.

[0111] Reference Figure 4 As shown, it can be understood that after the refrigerator 1000 is turned on, the temperatures of the freezing chamber 110, the refrigerating chamber 130 and the variable temperature chamber 120 will gradually decrease. Considering that the temperatures of each chamber are high when the refrigerator is just turned on, in order to improve the refrigeration efficiency, the control method of the embodiment also includes but is not limited to the following steps:

[0112] Step S400, when the freezing temperature is higher than the preset freezing temperature, the first fan 310 is controlled to increase the rotation speed;

[0113] Step S500, when the refrigeration temperature is higher than the preset refrigeration temperature, the second fan 320 is controlled to increase the rotation speed.

[0114] In step S400 and step S500, it is determined whether the freezing temperature reaches the freezing preset temperature and whether the refrigeration temperature reaches the refrigeration preset temperature. When the freezing temperature is higher than the freezing preset temperature, it indicates that the refrigeration requirement of the freezing chamber 110 is not met. At this time, the first fan 310 is controlled to increase the rotation speed, so that more refrigeration can be delivered to the freezing chamber 110 to improve the refrigeration efficiency. Similarly, when the refrigeration temperature is higher than the refrigeration preset temperature, it indicates that the refrigeration requirement of the refrigeration chamber 130 is not met. At this time, the second fan 320 is controlled to increase the rotation speed, so that more refrigeration can be delivered to the refrigeration chamber 130 and the variable temperature chamber 120 to improve the refrigeration efficiency.

[0115] Taking the freezer compartment 110 as an example, the preset freezing temperature of the freezer compartment 110 is -18°C. When the machine is turned on, the temperature detected by the first temperature sensor 112 is -5°C. At this time, the rotation speed of the first fan 310 is controlled to be increased from 1800rpm to 1900rpm, thereby increasing the air volume supplied to the freezer compartment 110 and improving the refrigeration efficiency of the freezer compartment 110.

[0116] In some embodiments, the first fan 310 and the second fan 320 respectively have a plurality of speed gears, and the step of controlling the first fan 310 and the second fan 320 to increase the speed is specifically to control the first fan 310 to gradually increase the speed by a corresponding amplitude, and to control the second fan 320 to gradually increase the speed by a corresponding amplitude. For example, the amplitude of each speed gear increase of the first fan 310 is 50 rpm. The first fan 310 originally runs at a speed of 1800 rpm. After increasing one speed gear, the speed becomes 1850 rpm, which can quickly increase the speed and avoid the aerodynamic noise being prominent due to the speed increase too quickly.

[0117] In some embodiments, when the freezing temperature is higher than the freezing preset temperature, it is also possible to determine whether to increase the rotation speed of the first fan 310 based on the difference between the freezing temperature and the freezing preset temperature, where the difference is an absolute value. For example, when the difference between the freezing temperature and the freezing preset temperature is greater than 2°C, the rotation speed of the first fan 310 is controlled to be increased; as the freezing temperature decreases, when the difference between the freezing temperature and the freezing preset temperature is less than 2°C, the first fan 310 is controlled to resume operation at the default rotation speed or reduce the rotation speed, which can make the freezing temperature closer to the freezing preset temperature, make the temperature adjustment more accurate, and also help reduce energy consumption. The control logic of the second fan 320 can be found in the above example and will not be repeated here.

[0118] It should be noted that the control method of the embodiment of the present invention gives priority to meeting the refrigeration capacity of each compartment. When the preset freezing temperature and the preset refrigeration temperature do not meet the requirements, the rotation speeds of the first fan 310 and the second fan 320 are first increased, and the first temperature sensor 112 and the second temperature sensor 132 detect the temperatures of the freezing chamber 110 and the refrigerating chamber 130 in real time, and then the rotation speeds of the two fans are adjusted according to the changes in the compartment temperature and the changes in the sound pressure level.

[0119] Reference Figure 4 As shown, it can be understood that the control method of the embodiment also includes:

[0120] Step S600, when the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is less than the preset value, the first fan 310 and the second fan 320 are controlled to maintain the current rotation speed or reduce the rotation speed.

[0121] When the freezing temperature reaches the preset freezing temperature and the detected sound pressure level does not exceed the preset value, it means that the refrigeration capacity requirement of the freezing chamber 110 is met, and the freezing chamber 110 reaches a better air volume distribution and low noise state. At this time, it is possible to choose to control the first fan 310 to maintain the current speed and continue to run, or to control the first fan 310 to reduce the speed; similarly, when the refrigeration temperature reaches the preset refrigeration temperature and the detected sound pressure level does not exceed the preset value, it means that the refrigeration capacity requirement of the refrigeration chamber 130 is met, and the refrigeration chamber 130 reaches a better air volume distribution and low noise state. At this time, it is possible to choose to control the second fan 320 to maintain the current speed and continue to run, or to control the second fan 320 to gradually reduce the speed. When controlling the first fan 310 and the second fan 320 to reduce the speed, the speed can be reduced by the amplitude of each speed gear, that is, the speed is reduced gear by gear. Through the above control method steps, the operating conditions of the refrigerator 1000 can be determined, so that the speeds of the two fans are matched, and the noise is reduced to the maximum extent under the premise of ensuring the air volume and refrigeration efficiency, so as to achieve the refrigeration capacity and noise standards.

[0122] It can be understood that, in some embodiments, the control method further includes:

[0123] Step S700, construct a preset relationship table, which is used to represent that different freezing preset temperatures correspond to first preset speeds at different speed gears, and different refrigeration preset temperatures correspond to second preset speeds at different speed gears. That is to say, when the freezing preset temperature and the refrigeration preset temperature are known, the corresponding first preset speed and second preset speed can be found through the preset relationship table.

[0124] It can be understood that the smaller the setting values ​​of the freezing preset temperature and the refrigeration preset temperature are, the higher the first preset speed and the second preset speed found through the preset relationship table are, which is beneficial to improving the refrigeration efficiency of the compartment.

[0125] Reference Figure 5 As shown, step S300 of the above embodiment, the step of controlling the first fan 310 to run at a first preset speed, specifically includes:

[0126] Step S320, determining that the speed value of the speed gear corresponding to the current preset freezing temperature is the first preset speed according to the current preset freezing temperature and the preset relationship table;

[0127] Step S330, controlling the first fan 310 to run at a first preset speed.

[0128] The step of controlling the second fan 320 to run at a second preset speed specifically includes:

[0129] Step S340, determining that the speed value of the speed gear corresponding to the current preset refrigeration temperature is a second preset speed according to the current preset refrigeration temperature and the preset relationship table;

[0130] Step S350, controlling the second fan 320 to run at a second preset speed.

[0131] It can be understood that by constructing a preset relationship table, the first preset speed can match the freezing preset temperature, and the second preset speed can match the refrigeration preset temperature, so that the first fan 310 and the second fan 320 can both be started at a suitable speed to speed up the refrigeration efficiency; and the first fan 310 and the second fan 320 both gradually increase or decrease the speed by a certain amplitude, and the speed of the two fans can be controlled to operate within a suitable range, and the aerodynamic noise is effectively suppressed.

[0132] Reference Figure 6As shown, in some embodiments, the above-mentioned preset relationship table may also pre-store a first speed reduction amplitude corresponding to different speed gears of the first fan 310, and a second speed reduction amplitude corresponding to different speed gears of the second fan 320. According to the above-mentioned steps S320 to S350, the first preset speed of the first fan 310 and the second preset speed of the second fan 320 may be determined. When it is necessary to reduce the speed of the first fan 310 or the second fan 320, the speed may be gradually reduced by controlling the first fan 310 with the first speed reduction amplitude, or the speed may be gradually reduced by controlling the second fan 320 with the second speed reduction amplitude.

[0133] Specifically, in the above step S200, the step of controlling at least one of the first fan 310 and the second fan 320 to reduce the rotation speed specifically includes:

[0134] Step S210, when controlling the first fan 310 to reduce the speed, determining the first speed reduction amplitude corresponding to the current speed gear according to the preset relationship table, and gradually reducing the speed of the first fan 310 by the first speed reduction amplitude;

[0135] In step S220, when controlling the second fan 320 to reduce the speed, the second speed reduction amplitude corresponding to the current speed gear is determined according to the preset relationship table, and the speed of the second fan 320 is gradually reduced by the second speed reduction amplitude.

[0136] It is understandable that when the freezing chamber 110110 and the refrigerating chamber 130130 are allocated enough cold capacity and the operating noise is greater than or equal to the preset value, it is necessary to control the first fan 310 or the second fan 320 to reduce the speed. It is also possible to control the first fan 310 and the second fan 320 to reduce the speed at the same time, by gradually reducing the speed of the first fan 310 by a first speed reduction range, or gradually reducing the speed of the second fan 320 by a second speed reduction range. Since the sound pressure level is related to the speed of the motor, the lower the speed, the lower the sound pressure level. By reducing the speed in the above manner, the sound pressure level can be efficiently reduced to avoid the cooling capacity being affected by too fast a speed reduction. Under the premise of ensuring the air volume and cold capacity circulation, the first fan 310 and the second fan 320 can run at a low speed to effectively reduce the aerodynamic noise and achieve the purpose of noise reduction.

[0137] For example, the current speed of the first fan 310 is 1600 rpm, and the first speed reduction amplitude is 10 rpm. The speed of the first fan 310 is reduced by 10 rpm each time, so that the speed of the first fan 310 is gradually reduced to 1590 rpm, 1580 rpm, 1570 rpm, etc., until the sound pressure level of the first fan 310 is lower than the preset value.

[0138] It should be noted that, in the embodiment of the present invention, since the evaporator 200 is arranged close to the freezer chamber 110 and the refrigerating chamber 130 is far away from the freezer chamber 110, and the second fan 320 is used to send the cold energy of the evaporator 200 to the variable temperature chamber 120 and the refrigerating chamber 130, the temperature cooling capacity of the freezer chamber 110 is greater than the cooling capacity of the refrigerating chamber 130; and the cold energy distribution requirements of the freezer chamber 110 and the refrigerating chamber 130 are different, so the preset rotation speeds and speed reduction amplitudes of the first fan 310 and the second fan 320 are set differently; specifically, in the embodiment, the second speed reduction amplitude is greater than the first speed reduction amplitude, that is, the speed reduction of the second fan 320 is faster than that of the first fan 310. Considering that the cold energy demand of the refrigerating chamber 130 is relatively low, such a setting can reduce the rotation speed of the second fan 320 more quickly and efficiently, thereby quickly reducing noise.

[0139] Since the cooling capacity distribution requirements of the freezing chamber 110 and the refrigerating chamber 130 are different, there are differences in the preset rotation speeds of the first fan 310 and the second fan 320. Specifically, the preset rotation speeds can be flexibly adjusted according to the temperature requirements of the variable temperature chamber 120 and the refrigerating chamber 130.

[0140] Reference Figure 8 and Fig. 9 As shown, the following is explained with specific examples. Figure 8 The preset relationship table shown can show the range of preset fan speeds corresponding to different temperatures in the freezing chamber 110 and the refrigerating chamber 130. Fig. 9 The table shows the speed and sound pressure level corresponding to different speed gears of the dual fans.

[0141] Combination Figure 2 It can be understood that in the embodiment, the freezer chamber 110 is closer to the human ear than the refrigerator chamber 130, and the evaporator 200 and the two fans are arranged near the freezer chamber 110, and the aerodynamic noise generated is more easily heard by the human ear. Since the temperature cooling capacity of the freezer chamber 110 is greater than the cooling capacity of the refrigerator chamber 130, the cooling capacity demand of the refrigerator chamber 130 is less than that of the freezer chamber 110, the first fan 310 is provided with 5 gears and the second fan 320 is provided with 4 gears, so that the maximum rated speed is as small as possible, that is, the maximum speed of the second fan 320 is lower than the maximum speed of the first fan 310. In this way, the second speed reduction amplitude is set to be greater than the first speed reduction amplitude, the speed can be reduced faster, the impact on refrigeration and preservation is smaller, and the noise can be effectively reduced.

[0142] Reference Figure 7As shown, in some embodiments, the preset relationship table is also used to characterize the first speed increase amplitude corresponding to the different speed gears of the first fan 310, and the second speed increase amplitude corresponding to the different speed gears of the second fan 320. According to the above steps S320 to S350, the first preset speed of the first fan 310 and the second preset speed of the second fan 320 can be determined. When the speeds of the first fan 310 and the second fan 320 need to be increased, the first fan 310 is controlled to gradually increase the speed with the first speed increase amplitude, and the second fan 320 is controlled to gradually increase the speed with the second speed increase amplitude. Since the second speed increase amplitude is greater than the first speed increase amplitude, that is, when the speed needs to be increased, the speed increase amplitude of the second fan 320 is higher than the speed increase amplitude of the first fan 310.

[0143] Specifically, in the above step 400, the step of controlling the first fan 310 to increase the rotation speed specifically includes:

[0144] Step S410, determining a first speed increase amplitude corresponding to the current speed gear according to a preset relationship table, and gradually increasing the speed of the first fan 310 with the first speed increase amplitude.

[0145] Reference Figure 8 and Fig. 9 As shown, for example, the current speed of the first fan 310 is R3, and its corresponding first speed increase amplitude is 10rpm. When the speed needs to be increased, the first fan 310 is controlled to increase the speed by 10rpm, so that the speed of the first fan 310 is gradually increased to 1510rpm, 1520rpm, 1530rpm, etc., until the temperature of the freezer chamber 110 reaches the preset freezing temperature.

[0146] In the above step 500, the step of controlling the second fan 320 to increase the rotation speed specifically includes:

[0147] Step S510, determining the second speed increase amplitude corresponding to the current speed gear according to the preset relationship table, and gradually increasing the speed of the second fan 320 with the second speed increase amplitude.

[0148] Reference Figure 8 and Fig. 9 As shown, for example, the current speed of the second fan 320 is R2, and its corresponding second speed increase amplitude is 20rpm. When the speed needs to be increased, the second fan 320 is controlled to increase the speed by 20rpm, so that the speed of the second fan 320 is gradually increased to 1220rpm, 1240rpm, 1260rpm, etc., until the temperature of the refrigeration chamber 130 reaches the preset refrigeration temperature.

[0149] It should be noted that since the freezer compartment 110 is close to the evaporator 200, the refrigerator compartment 130 is far away from the freezer compartment 110, and the cooling capacity of the freezer compartment 110 is greater than that of the refrigerator compartment 130, in order to meet the distribution of cold capacity, the speed increases of the first fan 310 and the second fan 320 are inconsistent. By setting the second speed increase amplitude to be greater than the first speed increase amplitude, the refrigeration temperature can be lowered faster and more efficiently, thereby improving the refrigeration efficiency.

[0150] Considering that the refrigeration efficiency of the freezing chamber 110 and the refrigerating chamber 130 is related to the preset temperature of the chamber and the speed of the fan, according to Figure 8 The freezing preset temperature and the refrigeration preset temperature in the table can determine the speed gear of the first fan 310 and the second fan 320, and combined with Fig. 9 The speeds corresponding to the different speed gears in the table shown in the figure can be used to obtain the preset speeds of the first fan 310 and the second fan 320. When the speed needs to be increased or decreased, according to Figure 8 The table can determine the extent to which the speed should be increased or reduced.

[0151] Reference Fig.10 As shown, the following is a specific example. When the preset freezing temperature of the freezing chamber 110 is -20°C, the speed gear selected by the first fan 310 is R3. Fig. 9 As can be seen from the table, the speed gear is 1500rpm when the speed gear is R3, that is, the first preset speed of the first fan 310 is 1500rpm. Similarly, when the preset freezing temperature of the refrigerating chamber 130 is 6°C, the speed gear selected by the second fan 320 is R2. Fig. 9 It can be seen from the table that the speed when the speed gear is R2 is 1200 rpm, that is, the second preset speed of the second fan 320 is 1200 rpm.

[0152] It can be understood that the first fan 310 runs at 1500 rpm as the default speed. When the freezing temperature is higher than -20°C, the first fan 310 is controlled to increase from 1500 rpm to 1510 rpm, 1520 rpm, 1530 rpm, etc., and the amplitude of each commission is 10 rpm; when the refrigeration temperature is higher than 6°C, the second fan 320 is controlled to increase from 1200 rpm to 1220 rpm, 1240 rpm, 1260 rpm, etc., and the amplitude of each commission is 20 rpm; In the above example, the preset value is 29dBA, dBA represents the unit of sound pressure level measured by A sound level. When the sound pressure level is greater than 29Dba, the rotation speed is gradually reduced. The rotation speed of the first fan 310 is reduced from 1500rpm to 1490rpm, 1480rpm, etc. The rotation speed of the first fan 310 is reduced from 1500rpm to 1490rpm, 1480rpm, etc. The rotation speed of the second fan 320 is reduced from 1200rpm to 1180rpm, 1160rpm, etc.

[0153] according to Fig. 9 It can be understood from the table shown that in the embodiment, the first fan 310 has 5 gears, the second fan 320 has 4 gears, the highest speed is 1700rpm, and the corresponding sound pressure level of the dual fans is 30dBA. Compared with a single large-sized fan in the related art, the speed of the two fans is relatively low, and the above embodiment can control the first fan 310 and the second fan 320 to change the speed. In this way, under the premise of ensuring the circulation of air volume and cooling capacity, the first fan 310 and the second fan 320 can be operated at a low speed to effectively reduce the aerodynamic noise.

[0154] In addition, an embodiment of the present invention further provides a controller for a refrigeration device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, a control method for the refrigeration device as described in the above embodiment is implemented.

[0155] Take the control processor and memory in the controller as an example that can be connected through a bus. The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk memory, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely arranged relative to the control processor, and these remote memories may be connected to the controller via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0156] The non-transient software program and instructions required to implement the control method of the above embodiment are stored in the memory, and when executed by the processor, the control method of the above embodiment is executed, for example, the control method described above is executed. Figure 3 Steps S100 to S200 of the method, Figure 4 Steps S200 to S600 of the method, Figure 5 Method steps S320 to S350, etc.

[0157] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0158] In addition, the refrigeration device 1000 of the embodiment of the present invention may be a double-door refrigeration device, a single-door refrigeration device, etc., without specific limitation. The refrigeration device 1000 includes the controller of the above embodiment, and the controller executes the control method of the refrigeration device of the above embodiment.

[0159] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-mentioned control method, for example, being executed by a processor, so that the above-mentioned one or more processors can execute the control method in the above-mentioned method embodiment, for example, executing the above-mentioned Figure 3 Steps S100 to S200 of the method, Figure 4 Steps S200 to S600 of the method, Figure 5 Method steps S320 to S350, etc.

[0160] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network nodes. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0161] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer-readable storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer-readable storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0162] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A refrigeration device, characterized in that: include: A box body is provided with a first chamber, a second chamber and a refrigeration air duct, the refrigeration air duct is provided with a first air supply port and a second air supply port, the first air supply port is communicated with the first chamber, and the second air supply port is communicated with the second chamber; an evaporator, arranged in the refrigeration air duct; The fan assembly includes a first fan and a second fan, wherein the first fan supplies air to the first chamber through the first air supply port, and the second fan supplies air to the second chamber through the second air supply port.

2. The refrigeration equipment according to claim 1, characterized in that: The first fan is arranged in the refrigeration air duct, and the first fan and part of the evaporator are arranged side by side along the width direction of the refrigeration air duct.

3. The refrigeration equipment according to claim 2, characterized in that: The evaporator includes a first heat exchange part and a second heat exchange part connected to each other. Along the width direction of the freezing air duct, the width of the first heat exchange part is greater than the width of the second heat exchange part. The second heat exchange part is arranged side by side with the first fan.

4. The refrigeration device according to claim 3, characterized in that: The first chamber includes a freezing chamber, the freezing air duct is located on the back side of the freezing chamber, the first air supply port is opened on the back wall of the freezing chamber, the first fan is an axial flow fan, and the second heat exchange part and the first air supply port are distributed along the axial direction of the first fan.

5. The refrigeration equipment according to claim 4, characterized in that: Along the axial direction of the first fan, a ratio of the width of the first fan to the width of the freezing air duct is in a range of 10% to 15%.

6. The refrigeration device according to claim 5, characterized in that: The width of the refrigeration air duct ranges from 50 mm to 70 mm.

7. The refrigeration equipment according to claim 4, characterized in that: The second fan is an axial flow fan, and the second fan is arranged at the bottom of the refrigeration air duct, and the axial direction of the second fan is perpendicular to the axial direction of the first fan.

8. The refrigeration equipment according to claim 3, characterized in that: The first heat exchange part includes a first heat exchange tube and a plurality of first fins fixed to the first heat exchange tube, the second heat exchange part includes a second heat exchange tube and a plurality of second fins fixed to the second heat exchange tube, and the first heat exchange tube and the second heat exchange tube are integrally bent.

9. A method for controlling a refrigeration device, characterized in that: The refrigeration equipment comprises: A box body, wherein a first chamber, a second chamber and a freezing air duct are provided therein, wherein the freezing air duct is provided with a first air supply port and a second air supply port, wherein the first air supply port is communicated with the first chamber, and the second air supply port is communicated with the second chamber, wherein the first chamber includes a freezing chamber, and the second chamber includes a refrigerating chamber; an evaporator, arranged in the refrigeration air duct; A fan assembly includes a first fan and a second fan, wherein the first fan supplies air to the first chamber through the first air supply port, and the second fan supplies air to the second chamber through the second air supply port; The control method comprises: Acquiring the freezing temperature of the freezing chamber, the refrigerating temperature of the refrigerating chamber, and the operating noise of the refrigerating equipment; When the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is greater than or equal to a preset value, at least one of the first fan and the second fan is controlled to stop or reduce the speed.

10. The control method of refrigeration equipment according to claim 9, characterized in that: The control method further comprises: In response to a start-up control signal of the refrigeration equipment, controlling the first fan to operate at a first preset speed, and controlling the second fan to operate at a second preset speed; When the freezing temperature is higher than the preset freezing temperature, controlling the first fan to increase the rotation speed; and When the refrigeration temperature is higher than the preset refrigeration temperature, the second fan is controlled to increase its rotation speed.

11. The control method for refrigeration equipment according to claim 10, characterized in that: The first fan and the second fan each have a plurality of speed gears, and the control method further includes: Constructing a preset relationship table, wherein the preset relationship table is used to indicate that different preset freezing temperatures correspond to the first preset speeds at different speed gears, and different preset refrigeration temperatures correspond to the second preset speeds at different speed gears; The controlling the first fan to operate at a first preset speed includes: According to the current preset freezing temperature and the preset relationship table, determining the speed value of the corresponding speed gear to be the first preset speed; Controlling the first fan to run at the first preset speed; The controlling the second fan to operate at a second preset speed includes: According to the current preset refrigeration temperature and the preset relationship table, determining the speed value of the corresponding speed gear to be the second preset speed; The second fan is controlled to run at the second preset speed.

12. The control method for refrigeration equipment according to claim 11, characterized in that: The preset relationship table is also used to characterize the first speed reduction amplitude corresponding to the different speed gears of the first fan, and the second speed reduction amplitude corresponding to the different speed gears of the second fan, and the second speed reduction amplitude is greater than the first speed reduction amplitude; The controlling at least one of the first fan and the second fan to reduce a rotation speed includes: When controlling the first fan to reduce its speed, determining the first speed reduction amplitude corresponding to the current speed gear according to the preset relationship table, and gradually reducing the speed of the first fan by the first speed reduction amplitude; When controlling the second fan to reduce its speed, the second speed reduction amplitude corresponding to the current speed gear is determined according to the preset relationship table, and the speed of the second fan is gradually reduced by the second speed reduction amplitude.

13. The control method of refrigeration equipment according to claim 11, characterized in that: The preset relationship table is also used to characterize the first speed increase amplitude corresponding to the different speed gears of the first fan, and the second speed increase amplitude corresponding to the different speed gears of the second fan, and the second speed increase amplitude is greater than the first speed increase amplitude; The controlling the first fan to increase the rotation speed includes: Determining the first speed increase amplitude corresponding to the current speed gear according to the preset relationship table, and gradually increasing the speed of the first fan by the first speed increase amplitude; The controlling the second fan to increase the rotation speed includes: The second speed increase amplitude corresponding to the current speed gear is determined according to the preset relationship table, and the speed of the second fan is gradually increased by the second speed increase amplitude.

14. The control method of refrigeration equipment according to claim 10, characterized in that: The control method further comprises: When the freezing temperature reaches the freezing preset temperature, the refrigeration temperature reaches the refrigeration preset temperature, and the operating noise is less than the preset value, the first fan and the second fan are controlled to maintain the current rotation speed or reduce the rotation speed.

15. A controller for a refrigeration device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the control method of the refrigeration equipment as claimed in any one of claims 9 to 14 when executing the computer program.

16. A refrigeration device, characterized in that: Includes the controller as claimed in claim 15.

17. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the control method of the refrigeration equipment according to any one of claims 9 to 14.

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