Refrigerator and control method thereof
By designing nested dehumidification pipes and return air ducts in the refrigerator, condensation and dehumidification of the return air in the refrigerator room is solved, and the frosting problem caused by the high humidity of the return air in traditional refrigerators is reduced, and the refrigerator energy consumption is avoided.
Patent Information
- Application Number
- CN202311586940.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-24
- Publication Date
- 2025-05-27
AI Technical Summary
In traditional single evaporator refrigerators, the high humidity of the return air in the refrigeration chamber causes water frosting, affecting the operation of the refrigerator and increasing energy consumption.
A refrigerator is designed, which uses nested dehumidification pipes and return air ducts to condense and dehumidify the air in the return air duct through the dehumidification pipe to reduce the air moisture content.
It effectively reduces the probability of frosting the evaporator and the power consumption of the refrigerator, while avoiding the problem of excessive refrigerant consumption.
Smart Images
Figure CN120043305A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of refrigeration equipment, for example, to a refrigerator and its control method. Background Art
[0002] In a traditional single-evaporator refrigerator, the evaporator is usually arranged around the freezer compartment. Since there is no separate evaporator in the refrigerating compartment, the cold air generated by the freezer evaporator needs to be transported to the refrigerating compartment, exchange heat with the air in the refrigerating compartment, and then return to the evaporator through the return air duct located in the foaming layer to complete the cycle. However, the air flowing out of the refrigerating compartment of the refrigerator is characterized by high humidity. When the high-humidity air passes through the evaporator, due to the refrigeration of the refrigerant filled inside the evaporator, the water in the high-humidity air freezes and forms frost, covering the air duct interface and / or the evaporator, affecting the operation of the refrigerator and increasing the energy consumption of the refrigerator.
[0003] In the related art, to solve the above problems, a return air duct structure, a refrigerator and a pre-dehumidification control method are proposed. The return air duct structure includes a return air duct, an evaporator and a water guide plate. The return air duct receives the gas flowing out of the refrigerating compartment and the variable-temperature compartment of the refrigerator through the air inlet interface, and makes the air flowing through the inside of the return air duct body flow out to the freezer compartment through the air outlet interface. The evaporator is wound around the outer wall of the return air duct to cool the air inside the return air duct by the refrigerant in the evaporator, so that the water vapor in the air inside the duct condenses into water, converges to the water guide plate, and then flows to the drain port through the water guide plate to be discharged, so as to reduce the probability of water vapor frosting. The water guide plate is inclined and arranged inside the return air duct to facilitate the condensed water to flow to the drain port. The return air duct structure reduces the water content of the air reaching the freezer evaporator by winding the evaporator, arranging the water guide plate and the drain port inside, reduces the frosting probability, and thus reduces the power consumption of the refrigerator.
[0004] In the disclosed implementation process, the following problems exist in applying the above return air duct structure:
[0005] Although the above return air duct structure pre-dehumidifies the air in the return air duct by winding the evaporator and using the refrigerant flowing through the evaporator for refrigeration, achieving the reduction of the frosting probability of the evaporator and the reduction of the energy consumption of the refrigerator. However, using the refrigerant cycle for pre-dehumidification will accelerate the consumption of the refrigerant, and excessive consumption of the refrigerant will affect the normal use of the refrigerator.
[0006] It should be noted that the information disclosed in the above background art section is only used to strengthen the understanding of the background of this application, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention
[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not a general review, nor is it intended to identify key / important elements or delineate the scope of protection of these embodiments. Instead, it serves as a preamble to the detailed description that follows.
[0008] Embodiments of the present disclosure provide a refrigerator and a control method thereof, which can pre-dehumidify the return air in the refrigerating chamber, reduce the probability of frosting on the evaporator, and simultaneously reduce the consumption of refrigerant.
[0009] In some embodiments, a refrigerator is provided, including: a cabinet defining a refrigerating chamber and an evaporator chamber; an evaporator located in the evaporator chamber for reducing the air temperature in the evaporator chamber; a return air duct communicating the refrigerating chamber and the evaporator chamber; a dehumidifying duct, the input end and the output end of the dehumidifying duct are respectively communicated with opposite ends of the evaporator chamber, and the dehumidifying duct is disposed in the return air duct for condensing and dehumidifying the air in the return air duct.
[0010] Optionally, the dehumidifying duct is nested with the return air duct.
[0011] Optionally, the dehumidifying duct includes a dehumidifying chamber, and the return air duct passes through the dehumidifying chamber.
[0012] Optionally, the dehumidifying duct further includes: a partition disposed in the dehumidifying chamber, the partition divides the dehumidifying chamber into a first duct and a second duct, the return air duct passes through the first duct, and the input end and the output end of the second duct are respectively communicated with opposite ends of the evaporator chamber.
[0013] Optionally, a through hole is formed at one end of the partition close to the input end of the second duct, and an air return opening is formed at one end of the partition close to the output end of the second duct, and the first duct and the second duct are connected through the through hole and the air return opening.
[0014] Optionally, the number of through holes is multiple, and the multiple through holes are spaced apart along the extending direction of the dehumidifying duct on the partition.
[0015] Optionally, the dehumidifying duct further includes: a first air door disposed in the through hole for adjusting the opening degree of the through hole.
[0016] Optionally, an installation groove is provided on the pipe wall of the return air duct, and the dehumidifying duct is installed in the installation groove; wherein, the installation groove penetrates the pipe wall along the extending direction of the return air duct.
[0017] Optionally, the dehumidifying duct is spirally wound around the outer surface of the return air duct.
[0018] Optionally, the refrigerator further includes: a second air door disposed at the input end of the dehumidifying duct for adjusting the air volume entering the dehumidifying duct.
[0019] Optionally, the refrigerator further includes: a first drain pipe, which is communicated with the output end of the return air duct and is used to drain the condensed water formed in the return air duct; a water receiving tank, which is communicated with the output end of the first drain pipe; a second drain pipe, which is communicated with the water receiving tank, and the second drain pipe is used to drain the condensed water collected in the water receiving tank.
[0020] In some embodiments, a control method for a refrigerator is provided, which is used for the refrigerator described in any of the above embodiments. The control method includes: obtaining the air temperature in the return air duct and the wall temperature of the return air duct; determining the wall temperature threshold of the return air duct according to the air temperature in the return air duct; and controlling the air intake volume of the dehumidification duct according to the wall temperature and the wall temperature threshold.
[0021] Optionally, the step of determining the wall temperature threshold of the return air duct according to the air temperature in the return air duct includes: querying the corresponding wall temperature threshold in a preset temperature comparison table according to the air temperature in the return air duct; or calculating the sum of the air temperature in the return air duct and the temperature difference threshold to determine the wall temperature threshold.
[0022] Optionally, the wall temperature threshold includes a first temperature threshold and a second temperature threshold. The step of controlling the air intake volume of the dehumidification duct according to the wall temperature and the wall temperature threshold includes: when T 1 ≤T≤T 2 , maintaining the current air intake volume of the dehumidification duct; when T<T 1 , reducing the air intake volume of the dehumidification duct; when T>T 2 , increasing the air intake volume of the dehumidification duct; where T represents the wall temperature, T 1 represents the first temperature threshold, and T 2 represents the second temperature threshold.
[0023] The refrigerator and its control method provided by the embodiments of the present disclosure can achieve the following technical effects:
[0024] In the refrigerator provided by the embodiments of the present disclosure, the input end and the output end of the dehumidification pipeline are respectively communicated with opposite ends of the evaporator chamber, so as to guide the cold air cooled by the evaporator to enter the dehumidification pipeline through the input end of the dehumidification pipeline, and then return to the evaporator chamber through the output end of the dehumidification pipeline, forming a cold air circulation flow path. By circulating cold air through the dehumidification pipeline, the temperature of the dehumidification pipeline is relatively low. Since the dehumidification pipeline is arranged in the return air pipeline, when the relatively low-temperature dehumidification pipeline is close to the return air pipeline, heat exchange occurs between the dehumidification pipeline and the return air pipeline, reducing the temperature in the return air pipeline, so that the water in the air in the return air pipeline condenses to form water, reducing the water content of the air reaching the evaporator. Therefore, pre-dehumidification of the return air in the refrigerating chamber is realized, and the frosting probability of the evaporator and the power consumption of the refrigerator are reduced. In addition, compared with the related art, the dehumidification pipeline provided by the present application avoids using a refrigerant to form a refrigeration and dehumidification circulation flow path, thus reducing the consumption of the refrigerant.
[0025] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] One or more embodiments are exemplarily illustrated by the corresponding drawings, and these exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a proportional limitation, and among them:
[0027] Figure 1 is a schematic structural diagram of the refrigerator provided by the embodiments of the present disclosure;
[0028] Figure 2 is Figure 1 an enlarged structural diagram of the X position in the illustrated embodiment;
[0029] Figure 3 is Figure 1 a schematic structural diagram of the return air pipeline in the illustrated embodiment;
[0030] Figure 4 is Figure 1 a schematic structural diagram of the dehumidification pipeline in the illustrated embodiment;
[0031] Figure 5 is a schematic structural diagram of the air path in the dehumidification pipeline when the through hole of the refrigerator provided by the present disclosure is closed;
[0032] Figure 6 is a schematic structural diagram of the air path in the dehumidification pipeline when the through hole of the refrigerator provided by the present disclosure is opened;
[0033] Figure 7 is a schematic structural diagram of the refrigerator provided by another embodiment of the present disclosure;
[0034] Figure 8 isFigure 7 Schematic diagram of the enlarged structure at Y in the illustrated embodiment;
[0035] Figure 9 is Figure 1 Schematic diagram of the structure where the dehumidification duct is arranged in the return air duct in the illustrated embodiment;
[0036] Figure 10 Schematic flow chart of the control method of the refrigerator provided by the embodiment of the present disclosure;
[0037] Figure 11 Schematic diagram of the structure of the control device provided by the embodiment of the present disclosure.
[0038] Reference numerals:
[0039] 1 Refrigerator;
[0040] 10 Cabinet; 110 Refrigerating chamber; 120 Evaporator chamber;
[0041] 20 Evaporator;
[0042] 30 Return air duct; 310 Installation groove;
[0043] 40 Dehumidification duct; 402 Input end; 404 Input end; 410 Dehumidification chamber; 412 First duct; 414 Second duct; 420 Partition; 422 Through hole; 424 Return air opening; 430 First air damper;
[0044] 50 Second air damper;
[0045] 60 Control device; 610 Processor; 620 Memory; 630 Communication interface; 640 Bus. Detailed implementation manners
[0046] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner.
[0047] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.
[0048] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0049] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0050] Unless otherwise specified, the term "plurality" means two or more.
[0051] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.
[0052] The term "and / or" is a description of the associated relationship of objects, indicating that there can be three relationships. For example, A and / or B means: the three relationships of A, B, and A and B.
[0053] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.
[0054] In some embodiments, as shown in Figure 1 and Figure 7 , a refrigerator 1 is provided, which includes a box body 10, an evaporator 20, a return air duct 30, and a dehumidification duct 40. Among them, the box body 10 defines a refrigerating chamber 110 and an evaporator chamber 120. The evaporator 20 is located in the evaporator chamber 120 and is used to lower the air temperature in the evaporator chamber 120. The return air duct 30 communicates the refrigerating chamber 110 and the evaporator chamber 120. The input end 402 and the output end 404 of the dehumidification duct 40 are respectively communicated with opposite ends of the evaporator chamber 120, and the dehumidification duct 40 is arranged in the return air duct 30. The dehumidification duct 40 is used to condense and dehumidify the air in the return air duct 30.
[0055] In the refrigerator 1 provided by the embodiment of the present disclosure, the input end 402 and the output end 404 of the dehumidification pipeline 40 are respectively communicated with the opposite ends of the evaporator chamber 120, so as to guide the cold air cooled by the evaporator 20 to enter the dehumidification pipeline 40 through the input end 402 of the dehumidification pipeline 40, and then return to the evaporator chamber 120 through the output end 404 of the dehumidification pipeline 40, forming a cold air circulation flow path. By circulating cold air through the dehumidification pipeline 40, the temperature of the dehumidification pipeline 40 is relatively low. Since the dehumidification pipeline 40 is arranged in the return air pipeline 30, when the relatively low-temperature dehumidification pipeline 40 is close to the return air pipeline 30, heat exchange occurs between the dehumidification pipeline 40 and the return air pipeline 30, reducing the temperature in the return air pipeline 30, so that the water in the air in the return air pipeline 30 condenses to form water, reducing the water content of the air reaching the evaporator 20. Therefore, pre-dehumidification of the return air in the refrigerating chamber 110 is realized, and the frosting probability of the evaporator 20 and the power consumption of the refrigerator are reduced. In addition, compared with the related art, the dehumidification pipeline 40 provided by the present application avoids using a refrigerant to form a refrigeration and dehumidification circulation flow path, thus reducing the consumption of the refrigerant.
[0056] Optionally, as shown in combination with Figure 1 and Figure 2 shown, the dehumidification pipeline 40 and the return air pipeline 30 are nested.
[0057] In this embodiment, by nesting the dehumidification pipeline 40 and the return air pipeline 30, the contact area between the dehumidification pipeline 40 and the return air pipeline 30 is increased, and the connection stability between the dehumidification pipeline 40 and the return air pipeline 30 is improved. In addition, the dehumidification pipeline 40 exchanges heat with the return air pipeline 30 to reduce the temperature in the return air pipeline 30, and realizes condensation dehumidification of the return air in the refrigerating chamber 110 flowing through the return air pipeline 30. By increasing the contact area between the dehumidification pipeline 40 and the return air pipeline 30, the heat exchange efficiency between the dehumidification pipeline 40 and the return air pipeline 30 can be improved, thereby improving the pre-dehumidification effect of the dehumidification pipeline 40 on the return air in the refrigerating chamber 110.
[0058] Optionally, as shown in combination with Figures 2 to 6 shown, the dehumidification pipeline 40 includes a dehumidification cavity 410, and the return air pipeline 30 passes through the dehumidification cavity 410.
[0059] In this embodiment, the dehumidification duct 40 includes a dehumidification chamber 410. The input end 402 and the output end 404 of the dehumidification duct 40 are respectively communicated with opposite ends of the evaporator chamber 120. The cold air cooled by the evaporator 20 enters the dehumidification chamber 410 through the input end 402 of the dehumidification duct 40, and then returns to the evaporator chamber 120 through the output end 404 of the dehumidification duct 40, forming a cold air circulation flow path. Among them, the return air duct 30 penetrates through the dehumidification chamber 410, so that a part of the return air duct 30 is located inside the dehumidification chamber 410. When the cold air enters the dehumidification chamber 410 through the input end 402 of the dehumidification duct 40, it directly exchanges heat with the high-humidity air in the return air duct 30, thereby further improving the heat exchange efficiency with the return air duct 30 and further enhancing the pre-dehumidification effect of the dehumidification duct 40 on the return air of the refrigerating chamber 110.
[0060] Optionally, as shown in Figures 2 to 6 the dehumidification duct 40 further includes a partition 420. The partition 420 is arranged in the dehumidification chamber 410, and the partition 420 divides the dehumidification chamber 410 into a first duct 412 and a second duct 414. The return air duct 30 penetrates through the first duct 412, and the input end 402 and the output end 404 of the second duct 414 are respectively communicated with opposite ends of the evaporator chamber 120.
[0061] In this embodiment, the dehumidification duct 40 and the second duct 414 share the input end 402 and the output end 404. Since the partition 420 divides the dehumidification chamber 410 into the first duct 412 and the second duct 414, the first duct 412 and the second duct 414 are arranged in parallel. Among them, the input end 402 and the output end 404 of the second duct 414 are respectively communicated with opposite ends of the evaporator chamber 120. As shown in Figure 5 the cold air cooled by the evaporator 20 enters the second duct 414 through the input end 402 of the second duct 414, and then returns to the evaporator chamber 120 through the output end 404 of the second duct 414, forming a cold air circulation flow path. By arranging the first duct 412 and the second duct 414 in parallel, with the return air duct 30 penetrating through the first duct 412, after heat exchange occurs between the first duct 412 and the second duct 414, the air temperature in the first duct 412 is reduced. Thereafter, heat exchange occurs between the first duct 412 and the return air duct 30, further reducing the temperature in the first duct 412, causing the water in the air of the return air duct 30 to condense into water, realizing the indirect heat exchange between the second duct 414 and the return air duct 30, and indirectly dehumidifying the return air of the refrigerating chamber 110.
[0062] During the condensation dehumidification process, the temperature difference on the circumferential side of the return air duct 30 is too low, which easily causes the high-humidity air in the return air duct 30 to further condense into frost and adhere to the inside of the return air duct 30 after condensing into water, blocking the return air duct 30 and affecting the stable operation of the refrigerator air supply circulation system, thereby affecting the working stability of the refrigerator. By indirectly exchanging heat between the second duct 414 and the return air duct 30, the probability that the high-humidity air directly condenses into frost in the return air duct 30 due to the too high heat exchange rate between the second duct 414 and the return air duct 30 is reduced, and the stability of the operation of the refrigerator air supply circulation system is improved.
[0063] Optionally, as shown in Figure 2 , Figure 4 and Figure 6 , a through hole 422 is provided at one end of the partition 420 close to the input end 402 of the second duct 414, and an air return port 424 is provided at one end of the partition 420 close to the output end 404 of the second duct 414. The first duct 412 and the second duct 414 are connected through the through hole 422 and the air return port 424.
[0064] In this embodiment, the cold air cooled by the evaporator 20 enters the second duct 414 through the input end 402 of the second duct 414, and then returns to the evaporator chamber 120 through the output end 404 of the second duct 414, forming a main cold air circulation path. Since a through hole 422 is provided at one end of the partition 420 close to the input end 402 of the second duct 414, and an air return port 424 is provided at one end of the partition 420 close to the output end 404 of the second duct 414, the first duct 412 and the second duct 414 are connected through the through hole 422 and the air return port 424. Therefore, after the cold air cooled by the evaporator 20 enters the second duct 414 through the input end 402 of the second duct 414, it is split. Part of the cold air enters the first duct 412 through the through hole 422 and then returns to the second duct 414 through the air return port 424, forming a secondary cold air circulation path.
[0065] Since the return air duct 30 passes through the first duct 412, part of the return air duct 30 is located inside the first duct 412, that is, part of the return air duct 30 is located in the secondary cold air circulation path. Through the cold air in the secondary cold air circulation path, direct heat exchange is carried out with the high-humidity air in the return air duct 30, improving the heat exchange efficiency with the return air duct 30, thereby improving the pre-dehumidification effect of the dehumidification duct 40 on the return air of the refrigerating chamber 110. In addition, through the diversion treatment of the cold air circulation path, the return air of the refrigerating chamber 110 is pre-dehumidified by using the secondary cold air circulation path, avoiding the direct heat exchange between the cold air in the entire cold air circulation path and the high-humidity air in the return air duct 30, and reducing the probability that the high-humidity air directly condenses into frost in the return air duct 30 due to the too high heat exchange rate.
[0066] Optionally, as shown in Figure 4and Figure 6 As shown, the number of through holes 422 is multiple, and the multiple through holes 422 are spaced apart along the extending direction of the dehumidifying duct 40 on the partition plate 420.
[0067] In this embodiment, the number of through holes 422 is multiple, and the multiple through holes 422 are spaced apart along the extending direction of the dehumidifying duct 40 on the partition plate 420. By increasing the number of through holes 422, the amount of cold air flowing into the first duct 412 is increased, that is, the cold air flow in the cold air secondary circulation path is increased, so as to improve the refrigeration efficiency of the cold air secondary circulation path for the return air duct 30 and improve the pre-dehumidification effect of the dehumidifying duct 40 on the return air of the refrigerating chamber 110.
[0068] It should be noted that for the distribution manner of the multiple through holes 422 on the shelf, the number, shape and size of the through holes 422 need to be specifically set by the designers according to the actual product equipment, which is not limited here, and only the condition that the multiple through holes 422 are spaced apart along the extending direction of the dehumidifying duct 40 on the partition plate 420 needs to be satisfied.
[0069] Optionally, in combination with Figures 4 to 6 As shown, the dehumidifying duct 40 further includes a first air door 430. The first air door 430 is arranged at the through hole 422 for adjusting the opening degree of the through hole 422.
[0070] In this embodiment, by arranging the first air door 430 at the through hole 422 to adjust the opening degree of the through hole 422, the amount of cold air flowing into the first duct 412 is controlled, that is, the cold air flow in the cold air secondary circulation path is controlled. By controlling the cold air flow in the cold air secondary circulation path, the regulation of the pre-dehumidification efficiency of the return air of the refrigerating chamber 110 is realized. Specifically, when it is necessary to increase the pre-dehumidification efficiency of the return air of the refrigerating chamber 110, the opening degree of the first air door 430 is increased to increase the cold air flow in the cold air secondary circulation path. When it is necessary to reduce the pre-dehumidification efficiency of the return air of the refrigerating chamber 110, the opening degree of the first air door 430 is reduced to reduce the cold air flow in the cold air secondary circulation path.
[0071] Optionally, in combination with Figures 7 to 9 As shown, an installation groove 310 is provided on the pipe wall of the return air duct 30, and the dehumidifying duct 40 is installed in the installation groove 310. Among them, the installation groove 310 penetrates the pipe wall along the extending direction of the return air duct 30.
[0072] In this embodiment, an installation groove 310 is provided on the pipe wall of the return air duct 30. The installation groove 310 penetrates the pipe wall along the extension direction of the return air duct 30, and the dehumidification duct 40 is installed in the installation groove 310. By means of the groove connection method, installing the dehumidification duct 40 in the installation groove 310 can increase the contact area between the dehumidification duct 40 and the return air duct 30, thereby improving the heat exchange efficiency between the dehumidification duct 40 and the return air duct 30, and enhancing the pre-dehumidification effect of the dehumidification duct 40 on the return air of the refrigerating chamber 110.
[0073] Optionally, the dehumidification duct 40 is spirally wound around the outer surface of the return air duct 30.
[0074] In this embodiment, by spirally winding the dehumidification duct 40 around the outer surface of the return air duct 30, the contact area between the dehumidification duct 40 and the return air duct 30 is increased, and the heat exchange efficiency between the dehumidification duct 40 and the return air duct 30 is improved, thereby enhancing the pre-dehumidification effect of the dehumidification duct 40 on the return air of the refrigerating chamber 110.
[0075] It should be noted that, as shown in Figure 3 、 Figure 4 and Figure 9 , the specific shapes of the return air duct 30 and the dehumidification duct 40 can be circular or square strip-shaped. The specific shapes of the return air duct 30 and the dehumidification duct 40 are specifically set by designers according to the actual equipment product requirements and are not specified here.
[0076] Optionally, as shown in Figure 2 and Figure 8 , the refrigerator 1 further includes a second air damper 50. The second air damper 50 is arranged at the input end 402 of the dehumidification duct 40 for adjusting the air volume entering the dehumidification duct 40.
[0077] In this embodiment, by arranging the second air damper 50 at the input end 402 of the dehumidification duct 40 to adjust the air volume entering the dehumidification duct 40, the dehumidification efficiency of the dehumidification duct 40 is controlled. Specifically, as shown in Figures 4 to 6 , when the pre-dehumidification of the return air of the refrigerating chamber 110 is not required, the second air damper 50 is closed to block the cold air circulation loop, realizing the closing of the pre-dehumidification function of the return air of the refrigerating chamber 110. When it is necessary to increase the dehumidification efficiency, the opening degree of the second air damper 50 is increased to increase the air volume entering the dehumidification duct 40, realizing the improvement of the dehumidification efficiency. When it is necessary to reduce the dehumidification efficiency, the opening degree of the second air damper 50 is reduced to reduce the air volume entering the dehumidification duct 40, realizing the reduction of the dehumidification efficiency. By setting the second air damper 50, the dehumidification efficiency of the dehumidification duct 40 is controlled to improve the dehumidification flexibility of the refrigerator 1 and enhance the user experience of using the refrigerator 1.
[0078] Optionally, the refrigerator 1 further includes a first drain pipe, a water receiving tank, and a second drain pipe. Among them, the first drain pipe is communicated with the output end 404 of the return air duct 30 for discharging the condensed water formed in the return air duct 30. The water receiving tank is communicated with the output end 404 of the first drain pipe. The second drain pipe is communicated with the water receiving tank, and the second drain pipe is used for discharging the condensed water collected in the water receiving tank.
[0079] In this embodiment, by providing the first drain pipe, the water receiving tank, and the second drain pipe, and the first drain pipe is communicated with the output end 404 of the return air duct 30, the water receiving tank is communicated with the output end 404 of the first drain pipe, and the second drain pipe is communicated with the water receiving tank, a drainage structure is formed to facilitate the discharge of the condensed water formed in the return air duct 30. By forming the drainage structure, the probability that the condensed water formed in the return air duct 30 stays in the return air duct 30 and further condenses into frost to block the return air duct 30 under continuous refrigeration conditions is further reduced. By providing the water receiving tank and the second drain pipe, it is convenient to collect the condensed water and discharge the condensed water from the refrigerator 1, reducing the risk of damage to other components of the refrigerator 1 due to the overflow of the condensed water.
[0080] It should be noted that the specific installation positions of the first drain pipe, the water receiving tank, and the second drain pipe are specifically set by the designer according to the actual equipment product requirements, and only need to satisfy the connection relationship between the return air duct 30, the first drain pipe, the water receiving tank, and the second drain pipe, and no regulations are made here.
[0081] Optionally, in combination with Figure 1 、 Figure 7 and Figure 9 as shown, the refrigerator 1 further includes a control device 60, and the control device 60 is installed on the cabinet 10. The control device 60 includes a processor, and the processor is configured to execute the control method of the refrigerator 1 when running program instructions.
[0082] In this embodiment, the control device 60 is installed on the cabinet 10. The installation relationship described here not only includes being placed inside the cabinet 10, but also includes the installation connection with other components of the refrigerator 1, including but not limited to physical connection, electrical connection, or signal transmission connection, etc. Those skilled in the art can understand that the control device 60 can be adapted to the feasible refrigerator 1 to implement other feasible embodiments.
[0083] In combination with Figure 1 and Figure 7 the refrigerator shown, the embodiments of the present disclosure provide a control method for a refrigerator. In combination with Figure 10 as shown, the method includes:
[0084] S101, the processor obtains the air temperature in the return air duct and the wall temperature of the return air duct.
[0085] S102. The processor determines the wall temperature threshold of the return air duct according to the air temperature in the return air duct.
[0086] S103. The processor controls the air intake volume of the dehumidification duct according to the wall temperature and the wall temperature threshold.
[0087] The refrigerator 1 provided by the present disclosure exchanges heat through the dehumidification duct 40 and the return air duct 30, reduces the temperature in the return air duct 30, causes the water in the air in the return air duct 30 to condense into water, reduces the water content in the air reaching the evaporator 20, and realizes pre-dehumidification of the return air in the refrigerating chamber 110. In practical applications, if the temperature on the peripheral side of the return air duct 30 is too low, it is easy to cause the high-humidity air in the return air duct 30 to further condense into frost and adhere to the inside of the return air duct 30 after condensing into water, blocking the return air duct 30. If the temperature on the peripheral side of the return air duct 30 is too high, it is easy to cause poor pre-dehumidification effect of the return air in the refrigerating chamber 110. Therefore, it is necessary to control the temperature on the peripheral side of the return air duct 30 to be stable within a preset range to ensure the pre-dehumidification effect of the return air in the refrigerating chamber and not affect the stable operation of the refrigerator at the same time.
[0088] In the control method provided by the embodiments of the present disclosure, the wall temperature of the return air duct refers to the surface temperature of the wall of the return air duct, that is, the temperature on the peripheral side of the return air duct. Since the dehumidification duct is arranged in the return air duct, by controlling the air intake volume of the dehumidification duct, the temperature on the peripheral side of the return air duct, that is, the change in the wall temperature of the return air duct, can be controlled. The control method provided by the present disclosure can determine the corresponding wall temperature threshold of the return air duct according to the current air temperature in the return air duct. Then, according to the current wall temperature of the return air duct and the wall temperature threshold, the air intake volume of the dehumidification duct is controlled. By controlling the air intake volume of the dehumidification duct, the wall temperature of the return air duct is controlled to make the wall temperature match the wall temperature threshold. Thus, it is realized that the temperature on the peripheral side of the return air duct is controlled to be stable within a preset range, the pre-dehumidification effect of the return air in the refrigerating chamber is improved, and the stability of the refrigerator operation is improved at the same time.
[0089] Optionally, the step of determining the wall temperature threshold of the return air duct according to the air temperature in the return air duct includes: querying the corresponding wall temperature threshold in a preset temperature comparison table according to the air temperature in the return air duct; or calculating the sum of the air temperature in the return air duct and the temperature difference threshold to determine the wall temperature threshold.
[0090] In this embodiment, a temperature comparison table or a temperature difference threshold is preset. The temperature comparison table records the corresponding relationship between the air temperature in the return air duct and the wall temperature of the return air duct. Under this corresponding relationship, the pre-dehumidification effect of the return air in the refrigerating chamber is relatively good, and at the same time, the stable operation of the refrigerator is not affected. Or, when the temperature difference between the air temperature in the return air duct and the wall temperature of the return air duct reaches a certain temperature, the pre-dehumidification effect of the return air in the refrigerating chamber is relatively good, and at the same time, the stable operation of the refrigerator is not affected. This certain temperature is the set temperature difference threshold. By presetting the temperature comparison table or the temperature difference threshold, the wall temperature threshold can be quickly determined, and the adjustment rate of the refrigerator can be improved.
[0091] It should be noted that the temperature comparison table or the temperature difference threshold needs to be determined through multiple experiments by technicians according to the actual equipment products. For the specific temperature comparison table or temperature difference threshold, no limitation is made here.
[0092] Optionally, the wall temperature threshold includes a first temperature threshold and a second temperature threshold. The step of controlling the air intake volume of the dehumidification duct according to the wall temperature and the wall temperature threshold includes: when T 1 ≤T≤T 2 , maintaining the current air intake volume of the dehumidification duct; when T<T 1 , reducing the air intake volume of the dehumidification duct; when T>T 2 , increasing the air intake volume of the dehumidification duct; where T represents the wall temperature, T 1 represents the first temperature threshold, and T 2 represents the second temperature threshold.
[0093] In this embodiment, T represents the wall temperature, T 1 represents the first temperature threshold, and T 2 represents the second temperature threshold. The control method provided in this embodiment can compare the obtained wall temperature with the first temperature threshold and the second temperature threshold respectively, and adjust the air intake volume of the dehumidification duct according to the comparison result, so that the wall temperature is maintained within the range of the first temperature threshold and the second temperature threshold. Specifically, when T 1 ≤T≤T 2 , maintaining the current air intake volume of the dehumidification duct; when T≤T 1 , reducing the air intake volume of the dehumidification duct; when T>T 2 , increasing the air intake volume of the dehumidification duct.
[0094] It should be noted that for how to adjust the air intake volume of the dehumidification duct 40, specific adjustment method settings need to be made according to the actual equipment products. Exemplarily, in combination with Figures 4 to 6As shown, the air intake volume of the dehumidification duct 40 can be adjusted by adjusting the first air damper 430 and / or the second air damper 50. When maintaining the current air intake volume of the dehumidification duct 40, maintain the current opening degree of the first air damper 430 and / or the second air damper 50; when reducing the air intake volume of the dehumidification duct 40, reduce the current opening degree of the first air damper 430 and / or the second air damper 50; when increasing the air intake volume of the dehumidification duct 40, increase the current opening degree of the first air damper 430 and / or the second air damper 50.
[0095] Combined with Figure 9 As shown, the control device 60 provided by the embodiments of the present disclosure includes a processor 610 and a memory 620. Optionally, the control device 60 may further include a communication interface 630 and a bus 640. Among them, the processor 610, the communication interface 630, and the memory 620 can complete mutual communication through the bus 640. The communication interface 630 can be used for information transmission. The processor 610 can call the logical instructions in the memory 620 to execute the control method of the refrigerator in the above embodiments.
[0096] In addition, when the logical instructions in the above-mentioned memory 620 are implemented in the form of software function units and sold or used as an independent product, they can be stored in a computer-readable storage medium.
[0097] The memory 620, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor 610 executes functional applications and data processing by running the program instructions / modules stored in the memory 620, that is, implements the control method of the refrigerator in the above embodiments.
[0098] The memory 620 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 620 may include a high-speed random access memory and may also include a non-volatile memory.
[0099] The embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are set to execute the control method of the refrigerator described above.
[0100] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.
[0101] The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, such as: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc, and other media that can store program codes.
[0102] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. Embodiments merely represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terms used in this application are only for describing embodiments and do not limit the claims. As used in the description of embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to also include the plural forms. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations including one or more of the associated listed items. Additionally, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" etc. mean the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups of these. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, or apparatus comprising the element. Herein, each embodiment may focus on the differences from other embodiments, and the same or similar parts among the embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method parts disclosed in the embodiments, the relevant parts may refer to the description of the method parts.
[0103] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner may depend on the specific application and design constraints of the technical solution. The skilled person may use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure. The skilled person can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.
[0104] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the couplings or direct couplings or communication connections shown or discussed between each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. Additionally, in the embodiments of the present disclosure, the various functional units can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.
[0105] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions marked in the block can occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks can also occur in a different order than disclosed in the description. Sometimes, there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, which can depend on the functions involved. Each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.
Claims
1. A refrigerator, characterized in that, comprising: a cabinet, defining a refrigerating chamber and an evaporator chamber; an evaporator, located in the evaporator chamber, for reducing the air temperature in the evaporator chamber; a return air duct, communicating the refrigerating chamber and the evaporator chamber; a dehumidifying duct, the input end and the output end of the dehumidifying duct are respectively communicated with opposite ends of the evaporator chamber, and the dehumidifying duct is arranged in the return air duct, and the dehumidifying duct is used for condensing and dehumidifying the air in the return air duct.
2. The refrigerator according to claim 1, characterized in that, the dehumidifying duct and the return air duct are nested.
3. The refrigerator according to claim 2, characterized in that, the dehumidifying duct includes a dehumidifying cavity, and the return air duct passes through the dehumidifying cavity.
4. The refrigerator according to claim 3, characterized in that, the dehumidifying duct further includes: a partition, arranged in the dehumidifying cavity, the partition divides the dehumidifying cavity into a first duct and a second duct, the return air duct passes through the first duct, and the input end and the output end of the second duct are respectively communicated with opposite ends of the evaporator chamber.
5. The refrigerator according to claim 4, characterized in that, a through hole is opened at one end of the partition close to the input end of the second duct, and an air return port is opened at one end of the partition close to the output end of the second duct, and the first duct and the second duct are communicated through the through hole and the air return port.
6. The refrigerator according to claim 5, characterized in that, the dehumidifying duct further includes: a first air door, arranged in the through hole, for adjusting the opening degree of the through hole.
7. The refrigerator according to claim 1, characterized in that, an installation groove is provided on the pipe wall of the return air duct, and the dehumidifying duct is installed in the installation groove; wherein, the installation groove penetrates through the pipe wall along the extending direction of the return air duct.
8. The refrigerator according to any one of claims 1 to 7, characterized in that, the refrigerator further includes: a second air door, arranged at the input end of the dehumidifying duct, for adjusting the air volume entering the dehumidifying duct.
9. A control method of a refrigerator, for the refrigerator according to any one of claims 1 to 8, characterized in that, the control method includes: acquiring the air temperature in the return air duct and the pipe wall temperature of the return air duct; determining the pipe wall temperature threshold value of the return air duct according to the air temperature in the return air duct; controlling the air intake volume of the dehumidifying duct according to the pipe wall temperature and the pipe wall temperature threshold value.
10. The control method of the refrigerator according to claim 9, characterized in that, the pipe wall temperature threshold value includes a first temperature threshold value and a second temperature threshold value, and the step of controlling the air intake volume of the dehumidifying duct according to the pipe wall temperature and the pipe wall temperature threshold value includes: At T 1 ≤T≤T 3 maintain the current air intake volume of the dehumidification duct When T < T 1 reduce the intake air volume of the dehumidification duct; When T > T 2 increase the air intake volume of the dehumidification duct; Among them, T represents the tube wall temperature, T 1 represents the first temperature threshold, T 2 represents the second temperature threshold.