Drain pipe control device, control method thereof and refrigerator

Abstract

The invention discloses a drain pipe control device, a control method thereof and a refrigerator, the drain pipe control device comprises a connecting structure connected with a drain port of a refrigerator drain pipe, and the connecting structure is provided with a first drain hole used for draining water and a first vent hole used for ventilation; and the conduction structure is rotatably connected with the connecting structure, a second drainage hole corresponding to the first drainage hole and a second vent hole corresponding to the first vent hole are formed in the conduction structure, and the conduction structure is used for draining water when rotating to the conduction state of the first drainage hole and the second drainage hole and ventilating when rotating to the conduction state of the first vent hole and the second vent hole. The problem that in the prior art, a liquid seal device of a refrigerator drain pipe cannot adapt to defrosting and frequent opening and closing of a refrigerator door at the same time is solved, the drain pipe control device can adapt to defrosting and frequent opening and closing of the refrigerator door at the same time, and stable operation of a refrigerator is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a drain pipe control device and a control method thereof, and a refrigerator. Background Art

[0002] As one of the indispensable household appliances in daily life, refrigerators, unlike other household appliances such as air conditioners, need to work continuously and stably for a long time to ensure that the food in the refrigerator can be stored for a longer time.

[0003] To ensure that the refrigerator can be in normal working condition for a long time, the most basic requirement is that the refrigerator can defrost normally. However, at the current stage, when the refrigerator is not defrosting, if there is no liquid seal under the drain pipe, the hot air backflow may cause the water tray or drain pipe to freeze, which will seriously affect the defrosting process. If the drain pipe is always in a liquid seal state, the frequent opening and closing of the refrigerator in a short period of time will cause negative pressure in the refrigerator box, making it difficult to open the refrigerator door, affecting the user experience.

[0004] With regard to the problem that the liquid sealing device of the refrigerator drain pipe in the related art cannot adapt to both defrosting and frequent opening and closing of the refrigerator door, no effective solution has been proposed yet. Summary of the invention

[0005] The present invention provides a drain pipe control device and a control method thereof, and a refrigerator, so as to at least solve the problem that the liquid sealing device of the refrigerator drain pipe in the prior art cannot adapt to both defrosting and frequent opening and closing of the refrigerator door.

[0006] To solve the above technical problems, according to one aspect of an embodiment of the present invention, a drain pipe control device is provided, comprising: a connecting structure connected to the drain outlet of the drain pipe of a refrigerator, the connecting structure being provided with a first drain hole for drainage and a first vent hole for ventilation; a conducting structure rotatably connected to the connecting structure, the conducting structure being provided with a second drain hole corresponding to the first drain hole and a second vent hole corresponding to the first vent hole, for drainage when the first drain hole and the second drain hole are rotated to a conducting state, and for ventilation when the first vent hole and the second vent hole are rotated to a conducting state.

[0007] Furthermore, the conductive structure is also used for sealing when it rotates to a state where the first drain hole and the second drain hole are not conductive and the first vent hole and the second vent hole are not conductive.

[0008] Furthermore, it also includes: a stepper motor connected to the conductive structure, used to control the rotation of the conductive structure, so that the conductive structure rotates to a conductive state where the first drain hole and the second drain hole are in a conductive state, or a conductive state where the first vent hole and the second vent hole are in a non-conductive state, and the first drain hole and the second drain hole are not in a conductive state.

[0009] Further, the first drainage hole, the second drainage hole and the first exhaust hole are upper and lower connecting holes, the first opening of the second exhaust hole is located on the upper surface of the conductive structure, and the second opening of the second exhaust hole is located on the side surface of the conductive structure.

[0010] Further, the relative positions of the first drainage hole and the first ventilation hole are different from the relative positions of the second drainage hole and the second ventilation hole, wherein the first drainage hole and the second drainage hole each include a plurality of holes.

[0011] According to another aspect of an embodiment of the present invention, a control method for a drain pipe control device is provided, which is applied to a drain pipe control device as described above, and the method includes: detecting an operating state of a refrigerator; determining a conduction mode of the drain pipe according to the operating state of the refrigerator; and controlling the operation of the drain pipe control device according to the conduction mode of the drain pipe.

[0012] Furthermore, the operating state of the refrigerator includes at least: a defrost state, a refrigeration state and a frequent door opening and closing state; the conduction mode of the drain pipe is determined according to the operating state of the refrigerator, including: when the operating state of the refrigerator is the defrost state, determining that the conduction mode of the drain pipe is a drainage mode; when the operating state of the refrigerator is the refrigeration state, determining that the conduction mode of the drain pipe is a sealing mode; when the operating state of the refrigerator is the frequent door opening and closing state, determining that the conduction mode of the drain pipe is a ventilation mode.

[0013] Furthermore, the operation of the drain pipe control device is controlled according to the conduction mode of the drain pipe, including: when the conduction mode of the drain pipe is the drainage mode, controlling the stepper motor to rotate the conduction structure to a conduction state between the first drain hole and the second drain hole for drainage; when the conduction mode of the drain pipe is the sealing mode, controlling the stepper motor to rotate the conduction structure to a state where the first drain hole and the second drain hole are not conductive and the first vent hole and the second vent hole are not conductive, for sealing; when the conduction mode of the drain pipe is the ventilation mode, controlling the stepper motor to rotate the conduction structure to a conduction state between the first vent hole and the second vent hole for ventilation.

[0014] According to another aspect of the embodiments of the present invention, a refrigerator is provided, comprising the drain pipe control device as described above.

[0015] According to another aspect of an embodiment of the present invention, there is provided a storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute the control method of the drain pipe control device as described above when executed by a computer processor.

[0016] In the present invention, a drain pipe control device is provided, which includes two parts, namely a connecting structure and a conducting structure. The connecting structure is connected to the drain outlet of the refrigerator drain pipe, and is provided with a first drain hole for draining and a first vent hole for ventilation. The conducting structure is rotatably connected to the connecting structure, and is provided with a second drain hole corresponding to the first drain hole and a second vent hole corresponding to the first vent hole. When the first drain hole and the second drain hole are rotated to the conducting state, the drain pipe control device drains water, and when the first vent hole and the second vent hole are rotated to the conducting state, the drain pipe control device ventilates. Through the structural coordination and position change of the connecting structure and the conducting structure, different functions can be realized, and water can be drained during defrosting to ensure the smooth progress of the defrosting process. When the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening and closing actions in a short period of time, the refrigerator is ventilated inside and outside by controlling the above structure to avoid the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator. Therefore, the drain pipe control device in the present invention can execute the corresponding conduction state according to the working state of the refrigerator. It is not only simple and reliable, but also comprehensive in functions. It can adapt to both defrosting and frequent opening and closing of the refrigerator door, thereby ensuring the stable operation of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of an optional structure of a drain pipe control device according to an embodiment of the present invention;

[0018] Figure 2 is an optional structural schematic diagram of a drain pipe control device in a ventilation state according to an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of an optional structure of a drain pipe control device in a sealed state according to an embodiment of the present invention;

[0020] Figure 4 is an optional flow chart of a control method for a drain pipe control device according to an embodiment of the present invention;

[0021] Figure 5 It is another optional flow chart of the control method of the drain pipe control device according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Connection structure; 2. Conductive structure; 3. Stepper motor; 11. First drainage hole; 12. First ventilation hole; 21. Second drainage hole; 22. Second ventilation hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0026] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0027] It should be understood that although the terms first, second, third, etc. may be used to describe controllers in embodiments of the present invention, these controllers should not be limited to these terms. These terms are only used to distinguish controllers connected to different devices. For example, without departing from the scope of embodiments of the present invention, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller.

[0028] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0029] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0030] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] As one of the most commonly used household appliances, the refrigerator needs to work stably and continuously for a long time due to its special work content (storing food and keeping food fresh). One of the most important factors for whether the refrigerator can work normally is whether the refrigerator can defrost normally. At present, there are still many shortcomings in the defrosting device: for example, the water tray is frozen and blocked, and the internal negative pressure problem caused by frequent opening of the refrigerator door in a short period of time.

[0033] In view of the above problems, a drain pipe control device is provided in a preferred embodiment 1 of the present invention. Specifically, Figure 1 An optional structural schematic diagram of the drain pipe control device is shown in FIG. Figure 1 As shown, the drain pipe control device includes:

[0034] A connecting structure connected to the drain outlet of the refrigerator drain pipe, the connecting structure being provided with a first drain hole for draining water and a first vent hole for ventilation;

[0035] The conducting structure is rotatably connected to the connecting structure, and is provided with a second drainage hole corresponding to the first drainage hole and a second ventilation hole corresponding to the first ventilation hole. The conducting structure is used for draining water when the first drainage hole and the second drainage hole are rotated to a conducting state, and for ventilation when the first ventilation hole and the second ventilation hole are rotated to a conducting state.

[0036] Figure 1 The figure shows the state of drainage when the first drainage hole and the second drainage hole are in conduction state, at which time the first ventilation hole and the second ventilation hole are staggered and not in conduction. Both the connection structure and the conduction structure adopt honeycomb structure, and multiple drainage holes can be set for rapid drainage.

[0037] In the above embodiment, a drain pipe control device is provided, which includes two parts, namely a connecting structure and a conducting structure. The connecting structure is connected to the drain outlet of the refrigerator drain pipe, and is provided with a first drain hole for draining and a first vent hole for ventilation. The conducting structure is rotatably connected to the connecting structure, and is provided with a second drain hole corresponding to the first drain hole and a second vent hole corresponding to the first vent hole. When the first drain hole and the second drain hole are rotated to the conducting state, the drain pipe control device drains water, and when the first vent hole and the second vent hole are rotated to the conducting state, the drain pipe control device ventilates. Through the structural coordination and position change of the connecting structure and the conducting structure, different functions can be realized, and water can be drained during defrosting to ensure the smooth progress of the defrosting process. When the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening and closing actions in a short period of time, the refrigerator is ventilated inside and outside by controlling the above structure to avoid the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator. Therefore, the drain pipe control device in the present invention can execute the corresponding conduction state according to the working state of the refrigerator. It is not only simple and reliable, but also comprehensive in functions. It can adapt to both defrosting and frequent opening and closing of the refrigerator door, thereby ensuring the stable operation of the refrigerator.

[0038] Figure 2 An optional structural schematic diagram showing the drain pipe control device in a ventilated state, such as Figure 2 As shown, the first vent hole and the second vent hole are connected, and the environment inside and outside the refrigerator is ventilated, which can avoid the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator.

[0039] Figure 3 An optional structural schematic diagram showing the drain pipe control device in a sealed state, such as Figure 3 As shown, the conduction structure is also used to rotate to a state where the first drain hole and the second drain hole are not connected and the first vent hole and the second vent hole are not connected to perform sealing. In this way, by cooperating with the connection structure and the conduction structure, the refrigerator can be rotated to different positions under different working conditions to ensure the stability of the refrigerator: in the refrigerator refrigeration cycle, the conduction structure is adjusted to a closed state to ensure that the water receiving pan above the drain pipe will not be frosted or frozen due to the backflow of hot air under the drain pipe (the lower pipe mouth is not liquid sealed); in the defrosting cycle of the refrigerator, the conduction structure is controlled to rotate to a specific position to ensure that the drain pipe is connected and the defrosting process proceeds smoothly; in addition, if the controller detects that the refrigerator door is frequently opened in a short period of time, the conduction structure is adjusted to a ventilation state to quickly eliminate the negative pressure problem that may occur inside the refrigerator, and effectively avoid the occurrence of laborious door opening caused by this problem.

[0040] In order to realize automatic control, Figure 1As shown, the present invention also includes: a stepper motor connected to the conduction structure, used to control the conduction structure to rotate, so that the conduction structure rotates to the first drain hole and the second drain hole conduction state, or the first vent hole and the second vent hole conduction state, the first drain hole and the second drain hole are not conduction state and the first vent hole and the second vent hole are not conduction state. The drain pipe control device is automatically controlled by the stepper motor to be in different states. During the refrigeration cycle of the refrigerator, the device is adjusted to Figure 3 The drain pipe is in a closed state to prevent the drain pipe from frosting and freezing due to the backflow of hot air generated by the compressor. When the refrigerator enters the defrost cycle, the controller cooperates with the stepper motor to adjust the device to Figure 1 In addition, during the normal operation of the refrigerator, since the interior of the refrigerator is closed as a whole, if the controller detects that the refrigerator door is frequently opened and closed in a short period of time, then in order to avoid the negative pressure inside the refrigerator, the controller will control the stepper motor to adjust the structure to Figure 1 state, to avoid the problem that the refrigerator door is difficult to open due to low internal pressure.

[0041] Alternatively, if Figure 1 As shown, the first drain hole, the second drain hole and the first exhaust hole are upper and lower connecting holes, the first opening of the second exhaust hole is located on the upper surface of the conductive structure, and the second opening of the second exhaust hole is located on the side surface of the conductive structure. The exhaust hole and the drain port are arranged on different sides, so that the drainage and ventilation processes can be separated, and the drainage, ventilation or sealing effect of the drain pipe control device can be guaranteed. In addition, there is a water receiving tray below the drain hole, which is rich in water vapor. If the second exhaust hole is also arranged below, water vapor can easily enter the drain pipe control device and the refrigerator during ventilation, resulting in freezing and blockage. When the second exhaust hole is arranged on the side, exhaust and drainage belong to two spaces, and the exhaust hole is not affected by water vapor, ensuring the smooth completion of the ventilation process.

[0042] In addition, if Figure 1 As shown, the relative positions of the first drain hole and the first vent hole are different from the relative positions of the second drain hole and the second vent hole, wherein the first drain hole and the second drain hole each include a plurality of holes. By setting the relative positions of the first drain hole and the first vent hole differently from the relative positions of the second drain hole and the second vent hole, the drainage and ventilation states cannot be achieved at the same time, thereby avoiding the drainage and ventilation from affecting each other.

[0043] The present invention adds a rotatable honeycomb structure device on the basis of the defrosting device of the existing refrigerator, cooperates with a stepper motor, and rotates the device to different states under different working states of the refrigerator to meet the requirements of the refrigerator under different working states. In the refrigerator refrigeration cycle, the bottom of the above device is in a closed state to prevent the hot air under the drain pipe from flowing back and causing the water receiving tray to freeze; in the defrosting cycle, the stepper motor rotates the above structure to a conducting state to ensure the smooth progress of the defrosting process; in addition, when the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening actions within a short time (2 minutes), by controlling the above structure, the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator can be avoided.

[0044] Example 2

[0045] In a preferred embodiment 2 of the present invention, a control method for a drain pipe control device is provided, which is applied to the drain pipe control device in the above embodiment 1. Specifically, Figure 4 An optional flow chart of the method is shown as follows: Figure 4 As shown, the method includes the following steps S402-S406:

[0046] S402: Detecting the operating status of the refrigerator;

[0047] S404: determining a conduction mode of the drain pipe according to the operating state of the refrigerator;

[0048] S406: Controlling the operation of the drain pipe control device according to the conduction mode of the drain pipe.

[0049] In the above embodiment, a drain pipe control device is provided, which includes two parts, namely a connecting structure and a conducting structure. The connecting structure is connected to the drain outlet of the refrigerator drain pipe, and is provided with a first drain hole for draining and a first vent hole for ventilation. The conducting structure is rotatably connected to the connecting structure, and is provided with a second drain hole corresponding to the first drain hole and a second vent hole corresponding to the first vent hole. When the first drain hole and the second drain hole are rotated to the conducting state, the drain pipe control device drains water, and when the first vent hole and the second vent hole are rotated to the conducting state, the drain pipe control device ventilates. Through the structural coordination and position change of the connecting structure and the conducting structure, different functions can be realized, and water can be drained during defrosting to ensure the smooth progress of the defrosting process. When the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening and closing actions in a short period of time, the refrigerator is ventilated inside and outside by controlling the above structure to avoid the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator. Therefore, the drain pipe control device in the present invention can execute the corresponding conduction state according to the working state of the refrigerator. It is not only simple and reliable, but also comprehensive in functions. It can adapt to both defrosting and frequent opening and closing of the refrigerator door, thereby ensuring the stable operation of the refrigerator.

[0050] Among them, the operating state of the refrigerator at least includes: defrosting state, refrigeration state and frequent door opening and closing state; the conduction mode of the drain pipe is determined according to the operating state of the refrigerator, including: when the operating state of the refrigerator is defrosting state, the conduction mode of the drain pipe is determined to be drainage mode; when the operating state of the refrigerator is refrigeration state, the conduction mode of the drain pipe is determined to be sealing mode; when the operating state of the refrigerator is frequent door opening and closing state, the conduction mode of the drain pipe is determined to be ventilation mode. In the refrigerator refrigeration cycle, in order to avoid the hot air backflow under the drain pipe and cause the water receiving tray to freeze and block, the drain pipe needs to be in a closed state; in the defrosting cycle, in order to ensure the smooth progress of the defrosting process and the smooth discharge of defrosting water, the drain pipe needs to be in a drainage state; in addition, when the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening actions in a short period of time, in order to avoid the problem of difficulty in opening the door due to the negative pressure environment inside the refrigerator, the drain pipe needs to be in a ventilation state. Through the different operating modes of the drain pipe, the drain pipe adapts to the operating state of the unit to ensure the normal operation of the refrigerator.

[0051] Specifically, the operation of the drain pipe control device is controlled according to the conduction mode of the drain pipe, including: when the conduction mode of the drain pipe is the drainage mode, controlling the stepper motor to rotate the conduction structure to the first drain hole and the second drain hole in a conducting state to drain water; when the conduction mode of the drain pipe is the sealing mode, controlling the stepper motor to rotate the conduction structure to the first drain hole and the second drain hole are not conducting and the first vent hole and the second vent hole are not conducting to seal; when the conduction mode of the drain pipe is the ventilation mode, controlling the stepper motor to rotate the conduction structure to the first vent hole and the second vent hole in a conducting state to ventilate. That is, the drain pipe control device is automatically controlled to be in different states by the stepper motor. When the conduction mode of the drain pipe is the sealing mode, the device is adjusted to Figure 3 The drain pipe is in a closed state to prevent the drain pipe from frosting and freezing due to the backflow of hot air generated by the compressor. When the drain pipe is in the drainage mode, the controller cooperates with the stepper motor to adjust the device to Figure 1 In addition, when the drain pipe is in ventilation mode, since the interior of the refrigerator is closed, if the controller detects that the refrigerator door is frequently opened and closed in a short period of time, in order to avoid negative pressure inside the refrigerator, the controller will control the stepper motor to adjust the structure to Figure 1 state, to avoid the problem that the refrigerator door is difficult to open due to low internal pressure.

[0052] Another control method for a drain pipe control device is also provided in a preferred embodiment 2 of the present invention. Specifically, Figure 5 An optional flow chart of the method is shown as follows: Figure 5 As shown, the method includes the following steps S501-S508:

[0053] S501: Refrigeration cycle;

[0054] S502: Whether the refrigerator enters the defrosting cycle, if yes, proceed to step S506, otherwise, proceed to step S503;

[0055] S503: the stepper motor control device rotates to state "1"; the rotation angle of the conductive structure of the lower part of the drain pipe control device is adjusted to meet the different needs of the refrigerator at the moment. When it is adjusted to angle 1, the holes of the lower part and the upper part are not conductive, and the drain pipe is in a closed state;

[0056] S504: The door is frequently opened within 2 minutes. If yes, proceed to step S505, otherwise, proceed to step S503;

[0057] S505: the stepper motor control device rotates to state "three"; when it is detected that the refrigerator door is frequently opened and closed, the stepper motor adjusts the angle of the lower half of the drain pipe control device to angle three again to prevent negative pressure from occurring;

[0058] S506: defrosting cycle;

[0059] S507: the stepper motor control device rotates to state "two"; when drainage is required, the stepper motor in the lower part of the drainage pipe control device adjusts the angle of the lower part to form a conductive state with the upper part;

[0060] S508: defrosting is completed.

[0061] Example 3

[0062] Based on the drain pipe control device provided in the above-mentioned embodiment 1, a refrigerator is further provided in a preferred embodiment 3 of the present invention, comprising the drain pipe control device as described above.

[0063] In the above embodiment, a drain pipe control device is provided, which includes two parts, namely a connecting structure and a conducting structure. The connecting structure is connected to the drain outlet of the refrigerator drain pipe, and is provided with a first drain hole for draining and a first vent hole for ventilation. The conducting structure is rotatably connected to the connecting structure, and is provided with a second drain hole corresponding to the first drain hole and a second vent hole corresponding to the first vent hole. When the first drain hole and the second drain hole are rotated to the conducting state, the drain pipe control device drains water, and when the first vent hole and the second vent hole are rotated to the conducting state, the drain pipe control device ventilates. Through the structural coordination and position change of the connecting structure and the conducting structure, different functions can be realized, and water can be drained during defrosting to ensure the smooth progress of the defrosting process. When the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening and closing actions in a short period of time, the refrigerator is ventilated inside and outside by controlling the above structure to avoid the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator. Therefore, the drain pipe control device in the present invention can execute the corresponding conduction state according to the working state of the refrigerator. It is not only simple and reliable, but also comprehensive in functions. It can adapt to both defrosting and frequent opening and closing of the refrigerator door, thereby ensuring the stable operation of the refrigerator.

[0064] Example 4

[0065] Based on the control method of the drain pipe control device provided in the above-mentioned embodiment 2, a storage medium containing computer executable instructions is also provided in a preferred embodiment 4 of the present invention. When the computer executable instructions are executed by a computer processor, they are used to execute the control method of the drain pipe control device as described above.

[0066] In the above embodiment, a drain pipe control device is provided, which includes two parts, namely a connecting structure and a conducting structure. The connecting structure is connected to the drain outlet of the refrigerator drain pipe, and is provided with a first drain hole for draining and a first vent hole for ventilation. The conducting structure is rotatably connected to the connecting structure, and is provided with a second drain hole corresponding to the first drain hole and a second vent hole corresponding to the first vent hole. When the first drain hole and the second drain hole are rotated to the conducting state, the drain pipe control device drains water, and when the first vent hole and the second vent hole are rotated to the conducting state, the drain pipe control device ventilates. Through the structural coordination and position change of the connecting structure and the conducting structure, different functions can be realized, and water can be drained during defrosting to ensure the smooth progress of the defrosting process. When the refrigerator is working normally, if it is detected that the refrigerator has frequent door opening and closing actions in a short period of time, the refrigerator is ventilated inside and outside by controlling the above structure to avoid the problem of difficulty in opening the door caused by the negative pressure environment inside the refrigerator. Therefore, the drain pipe control device in the present invention can execute the corresponding conduction state according to the working state of the refrigerator. It is not only simple and reliable, but also comprehensive in functions. It can adapt to both defrosting and frequent opening and closing of the refrigerator door, thereby ensuring the stable operation of the refrigerator.

[0067] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0068] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0069] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0070] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0071] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0072] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0073] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0074] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A drainage pipe control device, characterized in that: include: A connecting structure connected to the drain outlet of the refrigerator drain pipe, wherein the connecting structure is provided with a first drain hole for draining water and a first vent hole for ventilation; A conducting structure is rotatably connected to the connecting structure, and is provided with a second drainage hole corresponding to the first drainage hole and a second ventilation hole corresponding to the first ventilation hole. The conducting structure is used for draining water when the first drainage hole and the second drainage hole are rotated to a conducting state, and for ventilation when the first ventilation hole and the second ventilation hole are rotated to a conducting state.

2. The drain pipe control device according to claim 1, characterized in that: The conductive structure is also used for sealing when it rotates to a state where the first drain hole and the second drain hole are not conductive and the first ventilation hole and the second ventilation hole are not conductive.

3. The drain pipe control device according to claim 2, characterized in that: Also includes: A stepper motor is connected to the conductive structure, and is used to control the rotation of the conductive structure so that the conductive structure rotates to a conductive state where the first drain hole and the second drain hole are in a conductive state, or a conductive state where the first vent hole and the second vent hole are in a non-conductive state, and a non-conductive state where the first drain hole and the second drain hole are in a non-conductive state.

4. The drain pipe control device according to claim 1, characterized in that: The first drain hole, the second drain hole and the first exhaust hole are upper and lower connecting holes, the first opening of the second exhaust hole is located on the upper surface of the conductive structure, and the second opening of the second exhaust hole is located on the side surface of the conductive structure.

5. The drain pipe control device according to claim 1, characterized in that: The relative positions of the first drain hole and the first vent hole are different from the relative positions of the second drain hole and the second vent hole, wherein the first drain hole and the second drain hole each include a plurality of holes.

6. A control method for a drain pipe control device, applied to the drain pipe control device according to any one of claims 1 to 5, characterized in that: The method comprises: Check the operating status of the refrigerator; determining a conduction mode of the drain pipe according to the operating state of the refrigerator; The operation of the drain pipe control device is controlled according to the conduction mode of the drain pipe.

7. The method according to claim 6, characterized in that The operating state of the refrigerator at least includes: a defrosting state, a refrigeration state, and a frequent door opening and closing state; and determining the conduction mode of the drain pipe according to the operating state of the refrigerator includes: When the operation state of the refrigerator is the defrosting state, determining that the conduction mode of the drain pipe is a drainage mode; When the operation state of the refrigerator is the refrigeration state, determining that the conduction mode of the drain pipe is a sealing mode; When the operation state of the refrigerator is the frequent door opening and closing state, it is determined that the conduction mode of the drain pipe is the ventilation mode.

8. The method according to claim 7, characterized in that Controlling the operation of the drain pipe control device according to the conduction mode of the drain pipe includes: When the conduction mode of the drain pipe is the drainage mode, controlling the stepper motor to rotate the conduction structure to a conduction state between the first drainage hole and the second drainage hole to drain water; When the conduction mode of the drain pipe is the sealing mode, controlling the stepping motor to rotate the conduction structure to a state where the first drain hole and the second drain hole are not conducting and the first vent hole and the second vent hole are not conducting, so as to perform sealing; When the conduction mode of the drain pipe is the ventilation mode, the stepping motor is controlled to rotate the conduction structure to a state where the first ventilation hole and the second ventilation hole are in conduction, so as to perform ventilation.

9. A refrigerator, characterized in that: It comprises the drain pipe control device as claimed in any one of claims 1 to 5.

10. A storage medium containing computer executable instructions, characterized in that: The computer executable instructions are used to execute the control method of the sewer control device according to any one of claims 6 to 8 when executed by a computer processor.

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