Refrigerator back anti-condensation air duct assembly and control method

Abstract

The invention provides a refrigerator back anti-condensation air duct assembly and a control method. The air duct assembly comprises a refrigerator body, an anti-condensation air duct and a controller. A compressor bin is arranged on the bottom side of the back of the box body, and a condenser, a condensation fan and a compressor are arranged in the compressor bin; the anti-condensation air duct is located on the back of the box body, a humidity sensor is arranged in the middle of the anti-condensation air duct, and an anti-condensation air duct air door assembly is arranged at one end of the anti-condensation air duct and comprises a first air door and a second air door; the first air door is arranged at an air inlet of the anti-condensation air duct, and the second air door is arranged at an outlet of the compressor bin; a condensation air outlet is formed in the end, away from the compressor bin, of the anti-condensation air duct. The controller compares the collected humidity of the anti-condensation air duct with the preset condensation humidity so as to control opening and closing of the first air door and the second air door, and the problem that the heat load is increased due to the fact that heat of the anti-condensation pipe is transmitted into the refrigerator is solved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and particularly to an anti-condensation air duct assembly for the back of a refrigerator and a control method therefor. Background Art

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature and is widely used in the fields of life and industry. Condensation is likely to occur in the opening areas of the refrigerator's refrigerating chamber and freezing chamber due to the temperature difference between the inside and outside, which affects the safety of equipment use and the energy efficiency performance. To address the above problems, a specific structure usually needs to be set in the refrigeration system to eliminate the hidden danger of condensation.

[0003] In the related art, an anti-condensation tube is connected in series at the inlet, outlet, or middle position of the condenser, and the condensation heat released by the refrigerant circulating in the tube is used to heat the areas prone to condensation. This method raises the temperature of the opening part through heat conduction, so that the temperature of this area is maintained above the dew point.

[0004] However, heat diffusion will occur during the heat transfer process of the anti-condensation tube, and part of the heat is conducted to the internal space of the refrigerator through the box body structure, resulting in an increase in the heat load of the refrigerating / freezing chamber. This heat conduction effect forces the refrigeration system to consume more energy to maintain the low temperature inside the box, significantly increasing the operating energy consumption of the equipment. How to effectively prevent condensation without increasing the internal heat load has become a technical problem to be solved urgently. Summary of the Invention

[0005] The present application provides an anti-condensation air duct assembly for the back of a refrigerator and a control method therefor to solve the problem that the heat transfer of the anti-condensation tube to the inside of the refrigerator causes an increase in the heat load.

[0006] The first aspect of the present application provides an anti-condensation air duct assembly for the back of a refrigerator, including: a box body, an anti-condensation air duct, and a controller;

[0007] A compressor compartment is provided at the bottom side of the back of the box body, and a condenser, a condensation fan, and a compressor are arranged in the compressor compartment;

[0008] The anti-condensation air duct is located at the back of the box body. A humidity sensor is provided in the middle of the anti-condensation air duct. An anti-condensation air duct damper assembly is provided at one end of the anti-condensation air duct close to the compressor compartment. The anti-condensation air duct damper assembly includes a first damper and a second damper; the first damper is arranged at the air inlet of the anti-condensation air duct, and the second damper is arranged at the outlet of the compressor compartment; a plurality of condensation air outlets are provided at one end of the anti-condensation air duct away from the compressor compartment;

[0009] The controller is communicatively connected to the compressor, the condensation fan, the humidity sensor, and the anti-condensation air duct damper assembly; the controller is configured to:

[0010] Control the humidity sensor to collect the humidity of the anti-condensation air duct in real time;

[0011] When the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, control the first air damper to open and control the second air damper to close;

[0012] When the humidity of the anti-condensation air duct is less than the preset condensation humidity, control the second air damper to open and control the first air damper to close.

[0013] The anti-condensation air duct assembly on the back of the refrigerator reasonably arranges the anti-condensation air duct and the compressor compartment, so that the air in the compressor compartment can blow to the easily condensable position on the back of the box body. This not only effectively reduces the condensation risk on the back of the refrigerator and avoids the situation where the heat of the anti-condensation pipe is transferred to the inside of the refrigerator, resulting in an increase in the heat load, but also further reduces the power consumption of the refrigerator. There is no need to design complex heat transfer structure parts additionally, reducing the cost of the refrigerator product and solving the problem that the heat of the anti-condensation pipe is transferred to the inside of the refrigerator, resulting in an increase in the heat load.

[0014] Optionally, the inside of the compressor compartment is a cuboid cavity structure, the cross-section of the condensation fan is rectangular, and the four sides of the condensation fan are in contact with the wall of the compressor compartment; the condenser and the compressor are respectively located on both sides of the condensation fan, so that the gas discharged from the compressor enters the condenser through the condensation fan.

[0015] Through the close cooperation of the cuboid cavity and the rectangular condensation fan, a directional air flow channel is formed inside the compressor compartment, reducing the energy loss caused by air flow disorder; the condenser and the compressor are placed on both sides of the condensation fan respectively, optimizing the gas flow path from the compressor to the condenser and improving the heat exchange efficiency.

[0016] Optionally, the compressor compartment is provided with a condensation air inlet and a condensation air outlet on both sides of the condensation fan respectively; the air inlet of the anti-condensation air duct is communicated with the condensation air outlet.

[0017] By constructing a directional air flow circulation path through the condensation air inlet and the condensation air outlet placed on both sides of the condensation fan, the air flow in the compressor compartment flows along the preset direction, reducing the air flow resistance; the design that the anti-condensation air duct is directly communicated with the condensation air outlet can utilize the waste heat discharged from the condenser to adjust the humidity of the back of the box body, realizing condensation protection without adding an independent heating component, and at the same time reducing the energy consumption and structural complexity through the reuse of the air flow path.

[0018] Optionally, the anti-condensation air duct includes a plurality of duct inner cavities;

[0019] The duct inner cavity is a strip structure, and the plurality of duct inner cavities are parallel to each other.

[0020] The formation of sub-region air flow guidance through the inner cavities of multiple groups of parallel strip-shaped air ducts evenly disperses the hot air flow output from the compressor compartment to different positions on the back of the box body, alleviating local humidity differences; the mutually independent inner cavities of the air ducts can reduce the cross-interference of air flows, lower the flow resistance, and at the same time, the modular structure facilitates standardized production and assembly, simplifying the manufacturing process complexity of the air duct components.

[0021] Optionally, the air outlet is located at the top of the back of the box body; the number of the inner cavities of the air ducts is equal to the number of the condensation air outlets, and one end of each inner cavity of the air duct is respectively communicated with one of the condensation air outlets, so that the air flow from the inner cavity of the air duct is guided to a preset area of the box body through the condensation air outlet.

[0022] By arranging the air outlet at the top of the back of the box body and matching the number of the inner cavities of the air ducts with that of the air outlets, the air flow in each inner cavity of the air duct is independently and directionally transported to the corresponding preset area, improving the coverage accuracy of the hot air flow on the back of the box body; the one-to-one correspondence between the inner cavity of the air duct and the air outlet can reduce the mutual interference of multiple air flows, lower the internal pressure fluctuation of the air duct, and at the same time, optimize the air flow distribution efficiency through modular layout, enhancing the pertinence of condensation protection.

[0023] Optionally, at least one flow deflector is arranged in the inner cavity of the air duct, and the inclination angle of the flow deflector matches the opening direction of the condensation air outlet for adjusting the air flow direction.

[0024] By arranging a flow deflector with an inclination angle matching the air outlet in the inner cavity of the air duct to directionally guide the air flow direction, the distribution uniformity of the air flow on the back of the box body is optimized; the angle adaptation of the flow deflector can reduce the collision loss between the air flow and the inner wall of the air duct, improve the heat air flow transfer efficiency, and at the same time, make the waste heat of the condenser more concentrated on the condensation-prone area through precise guidance, enhancing the response speed and resource utilization rate of humidity adjustment.

[0025] Optionally, a temperature sensor is arranged at a position close to the compressor in the compressor compartment, and the temperature sensor is communicatively connected with the controller; the controller is further configured to:

[0026] Control the temperature sensor to collect the working temperature of the compressor in real time;

[0027] When the working temperature exceeds a preset safety threshold, control the second air door to open and control the first air door to close.

[0028] The working temperature of the compressor is monitored in real time through a temperature sensor. Combining with the air damper switching mechanism of the controller, when the detected temperature exceeds the safety threshold, it automatically switches to the second air damper heat dissipation path to relieve the risk of compressor overheating. By preferentially discharging the high-temperature air flow instead of introducing the anti-condensation air duct, the heat transfer to the interior of the box can be reduced, the additional load of the refrigeration system can be lowered, and at the same time, the dynamic adjustment mechanism balances the requirements of equipment protection and condensation prevention, improving the operation stability and energy efficiency of the system.

[0029] The second aspect of the present application provides a control method for the anti-condensation air duct assembly on the back of a refrigerator, which is applied to the anti-condensation air duct assembly on the back of the refrigerator described in the first aspect. The method includes:

[0030] Controlling the humidity sensor to collect the humidity of the anti-condensation air duct in real time;

[0031] When the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, control the first air damper to open and control the second air damper to close;

[0032] When the humidity of the anti-condensation air duct is less than the preset condensation humidity, control the second air damper to open and control the first air damper to close.

[0033] While the above method includes all the beneficial effects of the anti-condensation air duct assembly on the back of the refrigerator described in the first aspect, through the humidity threshold judgment and the double-air-damper linkage control mechanism, the air flow path in the compressor compartment is dynamically switched according to the real-time humidity data. When the anti-condensation requirement is met, the hot air flow is introduced for humidity adjustment, and when the anti-condensation requirement is met, the heat is preferentially discharged, thereby reducing the redundant heat load of the refrigeration system; through the precise matching and real-time switching of the air damper states, the requirements of condensation prevention and energy consumption control are balanced, the air flow resource allocation efficiency is optimized, and at the same time, the operation logic is simplified to reduce the computing burden of the controller.

[0034] Optionally, after the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, the method further includes:

[0035] Judging whether the compressor is turned on;

[0036] If the compressor is turned on, control the first air damper to open and control the second air damper to close;

[0037] If the compressor is turned off, control the condensation fan and the first air damper to open and control the second air damper to close.

[0038] By combining the operating state of the compressor with the humidity threshold for conditional response, corresponding damper and condensate fan switch strategies are selected according to whether the compressor is working when the humidity meets the standard, ensuring that the air flow can still be driven by the condensate fan to complete humidity adjustment when the compressor is not started, and maintaining the continuous effectiveness of the anti-condensation function; by matching different working conditions with differential control logic, the system resource call efficiency is optimized, the unnecessary switch times of the compressor are reduced, and at the same time, the overall operating energy consumption and equipment loss risk are reduced by dynamically adjusting the air flow source.

[0039] Optionally, the preset condensation humidity is dynamically adjusted according to the ambient temperature. When the ambient temperature rises by 1°C, the preset condensation humidity decreases by 3%-5%.

[0040] The preset condensation humidity is dynamically adjusted according to the ambient temperature, so that the preset condensation humidity is adaptively lowered along with the ambient temperature rise gradient, improving the working condition adaptability of humidity monitoring; the correction of the condensation critical condition based on the temperature change can optimize the timing and intensity of anti-condensation triggering, reducing the redundant air flow supply caused by too high preset condensation humidity in high-temperature environments, thereby reducing the operating energy consumption and equipment heat load on the premise of maintaining the condensation protection effect.

[0041] As can be seen from the above technical solutions, the present application provides a refrigerator back anti-condensation air duct assembly and a control method. The refrigerator back anti-condensation air duct assembly includes: a box body, an anti-condensation air duct and a controller; a compressor compartment is provided at the bottom side of the back of the box body, and a condenser, a condensate fan and a compressor are provided in the compressor compartment; the anti-condensation air duct is located at the back of the box body, a humidity sensor is provided in the middle of the anti-condensation air duct, and an anti-condensation air duct damper assembly is provided at one end of the anti-condensation air duct close to the compressor compartment. The anti-condensation air duct damper assembly includes a first damper and a second damper; the first damper is provided at the air inlet of the anti-condensation air duct, and the second damper is provided at the outlet of the compressor compartment; a plurality of condensate air outlets are provided at one end of the anti-condensation air duct away from the compressor compartment; the controller is communicatively connected to the compressor, the condensate fan, the humidity sensor and the anti-condensation air duct damper assembly; the controller controls the humidity sensor to collect the humidity of the anti-condensation air duct in real time; when the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, the first damper is controlled to open and the second damper is controlled to close; when the humidity of the anti-condensation air duct is less than the preset condensation humidity, the second damper is controlled to open and the first damper is controlled to close, solving the problem that the heat of the anti-condensation pipe is transferred to the inside of the refrigerator, resulting in an increase in heat load. Description of the Drawings

[0042] To more clearly illustrate the technical solutions of the present application, the following will briefly introduce the attached drawings required in the embodiments. Obviously, for those of ordinary skill in the art, other attached drawings can be obtained based on these attached drawings without creative efforts.

[0043] Figure 1 Schematic structural diagram of the anti-condensation air duct assembly on the back of the refrigerator described in the embodiment of the present application after being assembled to the refrigerator;

[0044] Figure 2 Schematic structural diagram of the compressor compartment in the anti-condensation air duct assembly on the back of the refrigerator described in the embodiment of the present application;

[0045] Figure 3 Schematic connection diagram of the anti-condensation air duct and the compressor compartment in the anti-condensation air duct assembly on the back of the refrigerator described in the embodiment of the present application;

[0046] Figure 4 Schematic diagram of the air inlet of the air path in the compressor compartment in the anti-condensation air duct assembly on the back of the refrigerator described in the embodiment of the present application;

[0047] Figure 5 Schematic flow diagram of the control method of the anti-condensation air duct assembly on the back of the refrigerator described in the embodiment of the present application.

[0048] Illustration:

[0049] Among them, 1 - box body; 101 - condenser; 102 - condensation fan; 103 - compressor; 11 - compressor compartment; 111 - condensation air inlet; 2 - anti-condensation air duct; 202 - anti-condensation air duct damper assembly; 203 - condensation air outlet; 22 - humidity sensor. Detailed implementation manners

[0050] The following will describe the embodiments in detail, and the examples are shown in the attached drawings. When the following description involves the attached drawings, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar elements. The implementation manners described in the following embodiments do not represent all the implementation manners consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application.

[0051] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described implementation manners, rather than intending to limit the implementation manners of the present application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0052] In this application, terms such as "first", "second", "third", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar or like objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that such terms can be interchanged under appropriate circumstances.

[0053] The terms "comprising" and "having" and any variations thereof are intended to cover but not exclusively include. For example, a product or device comprising a series of components does not necessarily have to be limited to all the components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0054] A refrigerator is a refrigeration device that maintains a constant low temperature and is widely used in the fields of life and industry. Due to the temperature difference between the inside and outside, condensation is likely to occur in the opening areas of the refrigerator's refrigerating chamber and freezer, which affects the safe use of the device and its energy efficiency performance. To address the above problems, a specific structure usually needs to be set in the refrigeration system to eliminate the potential for condensation.

[0055] In related embodiments, an anti-condensation tube is connected in series at the inlet, outlet or middle position of the condenser, and the condensation heat released by the refrigerant circulating in the tube is used to heat the area prone to condensation. This method raises the temperature of the opening part through heat conduction, keeping the temperature of this area above the dew point.

[0056] However, during the heat transfer process of the anti-condensation tube, a heat diffusion phenomenon occurs, and part of the heat is conducted to the internal space of the refrigerator through the box structure, resulting in an increase in the heat load of the refrigerating / freezing chamber. This heat conduction effect forces the refrigeration system to consume more energy to maintain the low temperature inside the box, significantly increasing the operating energy consumption of the device. How to effectively prevent condensation without increasing the internal heat load has become a technical problem to be solved urgently.

[0057] To solve the problem that the heat transfer of the anti-condensation tube to the inside of the refrigerator causes an increase in the heat load, refer to Figures 1 - 5, some embodiments of the present application provide a refrigerator rear anti-condensation air duct assembly, including: a box body 1, an anti-condensation air duct 2, and a controller; a compressor compartment 11 is provided at the bottom side of the back of the box body 1, and a condenser 101, a condensation fan 102, and a compressor 103 are provided in the compressor compartment 11; the anti-condensation air duct 2 is located at the back of the box body 1, a humidity sensor is provided in the middle of the anti-condensation air duct 2, and an anti-condensation air duct damper assembly 202 is provided at one end of the anti-condensation air duct 2 close to the compressor compartment 11, and the anti-condensation air duct damper assembly 202 includes a first damper and a second damper; the first damper is provided at the air inlet of the anti-condensation air duct 2, and the second damper is provided at the outlet of the compressor compartment 11; a plurality of condensation air outlets 203 are provided at one end of the anti-condensation air duct 2 away from the compressor compartment 11; the controller is communicatively connected to the compressor 103, the condensation fan 102, the humidity sensor, and the anti-condensation air duct damper assembly 202.

[0058] The controller is configured to:

[0059] Control the humidity sensor to collect the humidity of the anti-condensation air duct in real time.

[0060] When the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, control the first damper to open and control the second damper to close.

[0061] When the humidity of the anti-condensation air duct is less than the preset condensation humidity, control the second damper to open and control the first damper to close.

[0062] When the refrigerator rear anti-condensation air duct assembly of this embodiment is running, the controller continuously obtains the humidity data inside the anti-condensation air duct 2 detected by the humidity sensor 22. When the humidity reaches or exceeds the preset condensation humidity, the controller closes the second damper (at the outlet of the compressor compartment 11) and opens the first damper (at the air inlet of the anti-condensation air duct). At this time, the condensation fan 102 in the compressor compartment 11 conveys the heat and dry air flow generated by the operation of the compressor 103 to the condensation air outlets 203 through the anti-condensation air duct 2, and uses the hot air flow to reduce the humidity of the back surface of the box body 1 to prevent condensation from forming.

[0063] When the humidity is lower than the preset value, the controller opens the second damper and closes the first damper, and the hot air flow generated in the compressor compartment 11 is directly discharged through the second damper to avoid overheating the back of the box body 1. At the same time, the compressor compartment 11 adopts a cuboid cavity structure, the condensation fan 102 is attached to the wall of the compartment around it, and the condenser 101 and the compressor 103 are arranged on both sides of the condensation fan 102, forming a forced convection path: the high-temperature gas discharged from the compressor 103 is driven by the condensation fan 102 into the condenser 101 to complete heat dissipation, and then part of the air flow enters the anti-condensation air duct 2 through the air inlet of the anti-condensation air duct (communicated with the condensation air outlets 203), realizing the coordinated distribution of heat dissipation and anti-condensation air flow.

[0064] The anti-condensation air duct assembly at the back of the refrigerator reduces the risk of condensation at the back of the refrigerator by reasonably arranging the anti-condensation air duct 2 and the compressor compartment 11, so that the air in the compressor compartment 11 can blow to the easily condensable position at the back of the cabinet body 1. It not only effectively reduces the risk of condensation at the back of the refrigerator, avoids the situation that the heat of the anti-condensation pipe is transferred to the inside of the refrigerator, resulting in an increase in the heat load, but also further reduces the power consumption of the refrigerator. There is no need to design complex heat transfer structural parts additionally, reducing the cost of the refrigerator product, and solving the problem that the heat of the anti-condensation pipe is transferred to the inside of the refrigerator, resulting in an increase in the heat load.

[0065] In some embodiments, the interior of the compressor compartment 11 is a cuboid cavity structure, the cross-section of the condensation fan 102 is rectangular, and the periphery of the condensation fan 102 is attached to the wall of the compressor compartment 11; the condenser 101 and the compressor 103 are respectively located on both sides of the condensation fan 102, so that the gas discharged from the compressor 103 enters the condenser 101 through the condensation fan 102.

[0066] Through the close cooperation of the cuboid cavity and the rectangular condensation fan, a directional air flow channel is formed inside the compressor compartment 11, reducing the energy loss caused by air flow disorder; the condenser 101 and the compressor 103 are respectively placed on both sides of the condensation fan 102, optimizing the flow path of the gas from the compressor 103 to the condenser 101 and improving the heat exchange efficiency.

[0067] In some embodiments, the compressor compartment 11 is respectively provided with a condensation air inlet 111 and a condensation air outlet 203 on both sides of the condensation fan 102; the air inlet of the anti-condensation air duct 2 is communicated with the condensation air outlet 203.

[0068] By constructing a directional air flow circulation path through the condensation air inlet 111 and the condensation air outlet 203 respectively placed on both sides of the condensation fan 102, the air flow in the compressor compartment 11 flows along a preset direction, reducing the air flow resistance; the design that the anti-condensation air duct 2 is directly communicated with the condensation air outlet 203 can utilize the waste heat discharged from the condenser 101 to adjust the humidity of the back of the cabinet body 1, realizing condensation protection without adding an independent heating component, and at the same time reducing the energy consumption and structural complexity through the reuse of the air flow path.

[0069] In some embodiments, the anti-condensation air duct 2 includes a plurality of air duct inner cavities; the air duct inner cavities are strip-shaped structures, and the plurality of air duct inner cavities are parallel to each other.

[0070] The formation of sub-region air flow guidance through the inner cavities of multiple groups of parallel strip-shaped air ducts evenly disperses the hot air flow output from the compressor compartment 11 to different positions on the back of the cabinet 1, alleviating local humidity differences; the mutually independent inner cavities of the air ducts can reduce the cross-interference of air flows, lower the flow resistance, and at the same time, the modular structure facilitates standardized production and assembly, simplifying the manufacturing process complexity of the air duct components.

[0071] In some embodiments, the air outlet is located at the top of the back of the cabinet 1; the number of the inner cavities of the air ducts is equal to the number of the condensation air outlets 203, and one end of each inner cavity of the air duct is respectively communicated with one of the condensation air outlets 203, so that the air flow from the inner cavity of the air duct is guided to a preset area of the cabinet 1 through the condensation air outlet 203.

[0072] It should be understood that the preset area may include the area where condensation is likely to occur at the top of the cabinet 1 and the area outside the cabinet 1.

[0073] By arranging the air outlet at the top of the back of the cabinet 1 and matching the number of the inner cavities of the air ducts with the air outlet, the air flow in each inner cavity of the air duct is independently and directionally transported to the corresponding preset area, improving the coverage accuracy of the hot air flow on the back of the cabinet 1; the one-to-one correspondence between the inner cavity of the air duct and the air outlet can reduce the mutual interference of multiple air flows, lower the internal pressure fluctuation of the air duct, and at the same time, optimize the air flow distribution efficiency through modular layout, enhancing the pertinence of condensation protection.

[0074] In some embodiments, at least one flow guide plate is arranged in the inner cavity of the air duct, and the inclination angle of the flow guide plate matches the opening direction of the condensation air outlet 203 for adjusting the air flow direction.

[0075] By arranging a flow guide plate with an inclination angle matching the air outlet in the inner cavity of the air duct to directionally guide the air flow direction, the distribution uniformity of the air flow on the back of the cabinet 1 is optimized; the angle adaptation of the flow guide plate can reduce the collision loss between the air flow and the inner wall of the air duct, improve the heat air flow transfer efficiency, and at the same time, make the waste heat of the condenser 101 more concentrated on the condensation-prone area through precise guidance, enhancing the response speed and resource utilization rate of humidity adjustment.

[0076] In some embodiments, a temperature sensor is arranged at a position in the compressor compartment 11 close to the compressor 103, and the temperature sensor is communicatively connected with the controller; the controller is further configured to:

[0077] Control the temperature sensor to collect the working temperature of the compressor 103 in real time.

[0078] When the working temperature exceeds a preset safety threshold, control the second air door to open and control the first air door to close.

[0079] It should be understood that the preset safety threshold can be selected as 90°C - 105°C.

[0080] The working temperature of the compressor 103 is monitored in real time by a temperature sensor. In combination with the air damper switching mechanism of the controller, when the detected temperature exceeds the safety threshold, it automatically switches to the second air damper heat dissipation path to alleviate the overheating risk of the compressor 103. By preferentially discharging the high-temperature air flow instead of introducing the anti-condensation air duct 2, the heat transfer to the inside of the cabinet 1 can be reduced, the additional load of the refrigeration system can be lowered, and at the same time, the equipment protection and condensation protection requirements can be balanced through a dynamic adjustment mechanism, improving the operation stability and energy efficiency of the system.

[0081] Some embodiments of the present application further provide a control method for the anti-condensation air duct assembly on the back of a refrigerator, which is applied to the anti-condensation air duct assembly on the back of the refrigerator described in the above embodiments. Refer to Figure 5 The method includes:

[0082] Control the humidity sensor to collect the humidity RH1 of the anti-condensation air duct in real time.

[0083] When the humidity RH1 of the anti-condensation air duct is greater than or equal to the preset condensation humidity RH L , control the first air damper to open and control the second air damper to close.

[0084] When the humidity RH1 of the anti-condensation air duct is less than the preset condensation humidity RH L , control the second air damper to open and control the first air damper to close.

[0085] While having all the beneficial effects of the anti-condensation air duct assembly on the back of the refrigerator described in the above embodiments, the above method dynamically switches the air flow path of the compressor compartment 11 according to the real-time humidity data through the humidity threshold judgment and the double-air-damper linkage control mechanism, introduces hot air for humidity adjustment when meeting the anti-condensation requirement, and preferentially discharges heat when meeting the anti-condensation requirement, thereby reducing the redundant heat load of the refrigeration system; through the precise matching and real-time switching of the air damper states, the condensation protection and energy consumption control requirements are balanced, the air flow resource allocation efficiency is optimized, and at the same time, the operation logic is simplified to reduce the operation burden of the controller.

[0086] In some embodiments, referring again to Figure 5 When the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, the method further includes:

[0087] Judge whether the compressor 103 is started:

[0088] If the compressor 103 is started, control the first air damper to open and control the second air damper to close.

[0089] If the compressor 103 is shut down, control the condensation fan 102 and the first air damper to open and control the second air damper to close.

[0090] By combining the operating state of the compressor 103 with the humidity threshold for conditional response, corresponding damper and condensate fan 102 switching strategies are selected according to whether the compressor 103 is operating when the humidity meets the standard, ensuring that the air flow can still be driven by the condensate fan 102 to complete humidity adjustment when the compressor 103 is not started, and maintaining the continuous effectiveness of the anti-condensation function; by matching different working conditions requirements through differential control logic, optimizing the system resource call efficiency, reducing the unnecessary switching times of the compressor 103, and at the same time reducing the overall operating energy consumption and equipment loss risk by dynamically adjusting the air flow source.

[0091] In some embodiments, the preset condensation humidity is dynamically adjusted according to the ambient temperature. When the ambient temperature rises by 1°C, the preset condensation humidity decreases by 3%-5%.

[0092] It should be understood that an ambient temperature sensor may be provided outside the refrigerator, and the ambient temperature sensor is communicatively connected to the controller to detect the ambient temperature.

[0093] The preset condensation humidity is dynamically adjusted according to the ambient temperature, so that the preset condensation humidity is adaptively lowered along with the ambient temperature rise gradient, improving the working condition adaptability of humidity monitoring; the correction of the condensation critical condition based on the temperature change can optimize the timing and intensity of anti-condensation triggering, reducing the redundant air flow supply caused by too high preset condensation humidity in high-temperature environments, thereby reducing the operating energy consumption and equipment heat load on the premise of maintaining the condensation protection effect.

[0094] As can be seen from the above technical solutions, the embodiments of the present application provide a refrigerator back anti-condensation air duct assembly and a control method. The refrigerator back anti-condensation air duct assembly includes: a box body 1, an anti-condensation air duct 2, and a controller; a compressor compartment 11 is provided at the bottom side of the back of the box body 1, and a condenser 101, a condensation fan 102, and a compressor 103 are provided in the compressor compartment 11; the anti-condensation air duct 2 is located at the back of the box body 1, a humidity sensor is provided in the middle of the anti-condensation air duct 2, and an anti-condensation air duct damper assembly 202 is provided at one end of the anti-condensation air duct 2 close to the compressor compartment 11. The anti-condensation air duct damper assembly 202 includes a first damper and a second damper; the first damper is provided at the air inlet of the anti-condensation air duct 2, and the second damper is provided at the outlet of the compressor compartment 11; a plurality of condensation air outlets 203 are provided at one end of the anti-condensation air duct 2 away from the compressor compartment 11; the controller is communicatively connected to the compressor 103, the condensation fan 102, the humidity sensor, and the anti-condensation air duct damper assembly 202; the controller controls the humidity sensor to collect the humidity of the anti-condensation air duct in real time; when the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, it controls the first damper to open and the second damper to close; when the humidity of the anti-condensation air duct is less than the preset condensation humidity, it controls the second damper to open and the first damper to close, so as to solve the problem that the heat of the anti-condensation pipe is transferred to the inside of the refrigerator, resulting in an increase in the heat load.

[0095] For the similarities between the embodiments provided in the present application, reference can be made to each other. The specific embodiments provided above are only several examples under the general concept of the present application and do not constitute a limitation on the protection scope of the present application. For those skilled in the art, any other embodiments extended based on the solutions of the present application without creative efforts fall within the protection scope of the present application.

Claims

1. A refrigerator back anti-condensation air duct assembly, characterized in that: include: A box body (1), an anti-condensation air duct (2), and a controller; A compressor compartment (11) is arranged on the back bottom side of the box body (1), and a condenser (101), a condensing fan (102) and a compressor (103) are arranged in the compressor compartment (11); The anti-condensation air duct (2) is located at the back of the box body (1), a humidity sensor (22) is provided in the middle of the anti-condensation air duct (2), an anti-condensation air duct damper assembly (202) is provided at one end of the anti-condensation air duct (2) close to the compressor compartment (11), and the anti-condensation air duct damper assembly (202) comprises a first damper and a second damper; the first damper is provided at the air inlet of the anti-condensation air duct (2), and the second damper is provided at the outlet of the compressor compartment (11); a plurality of condensation air outlets (203) are provided at one end of the anti-condensation air duct (2) away from the compressor compartment (11); The controller is in communication connection with the compressor (103), the condensing fan (102), the humidity sensor (22) and the anti-condensation air duct damper assembly (202); the controller is configured as follows: Control the humidity sensor to collect the humidity of the anti-condensation air duct in real time; When the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, the first air door is controlled to open, and the second air door is controlled to close; When the humidity of the anti-condensation air duct is lower than the preset condensation humidity, the second air door is controlled to be opened, and the first air door is controlled to be closed.

2. The refrigerator back anti-condensation air duct assembly according to claim 1, characterized in that: The interior of the compressor compartment (11) is a rectangular cavity structure, the cross-section of the condensing fan (102) is rectangular, and the four sides of the condensing fan (102) are in contact with the compartment wall of the compressor compartment (11); the condenser (101) and the compressor (103) are respectively located on both sides of the condensing fan (102), so that the gas discharged from the compressor (103) enters the condenser (101) through the condensing fan (102).

3. The refrigerator back anti-condensation air duct assembly according to claim 1, characterized in that: The compressor compartment (11) is provided with a condensation air inlet (111) and a condensation air outlet (203) on both sides of the condensation fan (102); the air inlet of the anti-condensation air duct (2) is connected to the condensation air outlet (203).

4. The refrigerator back anti-condensation air duct assembly according to claim 1, characterized in that: The anti-condensation air duct (2) comprises a plurality of air duct inner cavities; The air duct inner cavity is a strip structure, and a plurality of the air duct inner cavities are parallel to each other.

5. The refrigerator back anti-condensation air duct assembly according to claim 4, characterized in that: The air outlet (203) is located at the top of the back of the box (1); the number of the air duct cavities is equal to the number of the condensation air outlets (203), and one end of each of the air duct cavities is connected to one of the condensation air outlets (203) so that the air flow from the air duct cavities is guided to a preset area of ​​the box (1) through the condensation air outlet (203).

6. The refrigerator back anti-condensation air duct assembly according to claim 4, characterized in that: At least one guide plate is arranged in the inner cavity of the air duct, and the inclination angle of the guide plate matches the opening direction of the condensation air outlet (203) and is used to adjust the airflow direction.

7. The refrigerator back anti-condensation air duct assembly according to claim 1, characterized in that: A temperature sensor is provided in the compressor compartment (11) at a position close to the compressor (103), and the temperature sensor is in communication connection with the controller; the controller is further configured to: Controlling the temperature sensor to collect the operating temperature of the compressor (103) in real time; When the operating temperature exceeds a preset safety threshold, the second damper is controlled to open, and the first damper is controlled to close.

8. A method for controlling a refrigerator back anti-condensation air duct assembly, characterized in that: The refrigerator back anti-condensation air duct assembly applied to any one of claims 1 to 7, the method comprising: Control the humidity sensor to collect the humidity of the anti-condensation air duct in real time; When the humidity of the anti-condensation air duct is greater than or equal to the preset condensation humidity, the first air door is controlled to open, and the second air door is controlled to close; When the humidity of the anti-condensation air duct is lower than the preset condensation humidity, the second air door is controlled to be opened, and the first air door is controlled to be closed.

9. The refrigerator back anti-condensation air duct control method according to claim 8, characterized in that: When the humidity of the anti-condensation air duct is greater than or equal to a preset condensation humidity, the method further includes: Determining whether the compressor (103) is turned on; If the compressor (103) is turned on, the first damper is controlled to be opened, and the second damper is controlled to be closed; If the compressor (103) is shut down, the condensing fan (102) and the first damper are controlled to open, and the second damper is controlled to close.

10. The refrigerator back anti-condensation air duct assembly control method according to claim 8, characterized in that: The preset condensation humidity is dynamically adjusted according to the ambient temperature. When the ambient temperature increases by 1° C., the preset condensation humidity decreases by 3%-5%.

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