Refrigerator and dew removal control method of refrigerator

Abstract

The invention discloses a refrigerator and a dew removal control method of the refrigerator. The refrigerator comprises a refrigerating system and a dew removal system. The refrigerating system comprises a compressor, a condenser, a capillary tube and an evaporating tube, and the compressor, the condenser, the capillary tube and the evaporating tube are sequentially connected through pipelines to form a refrigerating circulation pipeline. The dew removing system comprises a dew removing pipe arranged on the refrigerator. The dew removal system further comprises a circulating pump and a heat exchange device; the heat exchange device, the circulating pump and the dew removal pipe are sequentially connected through a pipeline to form a dew removal circulating pipeline; the circulating pump is used for controlling the heat medium in the circulating pipeline to flow; and the heat exchange device is used for carrying out heat transfer between a thermal medium in the dew removal circulation pipeline and a refrigerant in the refrigeration circulation pipeline. The dew removal system is additionally arranged, liquid in the dew removal pipe does not adopt refrigerating liquid in the refrigerating system, the dew removal system and the refrigerating system are independently distinguished, and the influence of dew removal on refrigeration of the refrigerator is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator and a dew removal control method for the refrigerator. Background Art

[0002] Refrigerator products work in certain high-humidity environments. Since the freezer door seal will always have heat leakage, fog-like dew will form on the freezer door seal and the center beam area. In severe cases, bead-like or flowing dew will appear, affecting user use.

[0003] In order to improve the dehumidification ability of the refrigerator under high humidity conditions, existing refrigerator products usually have dehumidification pipes around the freezer compartment, and refrigerant is introduced into the dehumidification pipes to remove dehumidification by using the high temperature of the refrigerant. However, the existing method heats the surroundings of the refrigerator freezer compartment by the high-temperature refrigerant in the condenser, which will cause a waste of refrigerator cooling capacity, thus making the refrigeration system less efficient. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a refrigerator and a dew removal control method for the refrigerator, which can remove dew while reducing the impact on the refrigeration system.

[0005] An embodiment of the present invention provides a refrigerator, including a refrigeration system and a dew removal system;

[0006] The refrigeration system comprises a compressor, a condenser, a capillary tube and an evaporation tube, wherein the compressor, the condenser, the capillary tube and the evaporation tube are sequentially connected through pipelines to form a refrigeration cycle pipeline;

[0007] The dew removal system comprises a dew removal pipe arranged on the refrigerator;

[0008] The dew removal system also includes a circulation pump and a heat exchange device;

[0009] The heat exchange device, the circulation pump and the dew removal pipe are connected in sequence through pipelines to form a dew removal circulation pipeline;

[0010] The circulation pump is used to control the flow of the heat medium in the circulation pipeline;

[0011] The heat exchange device is used for transferring heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline.

[0012] Preferably, the refrigerator further comprises:

[0013] Temperature sensor, used to detect indoor ambient temperature;

[0014] Humidity sensor, used to detect indoor environmental humidity;

[0015] Controller for:

[0016] In response to the received dew removal control signal, obtaining indoor environment temperature and indoor environment humidity;

[0017] When the indoor environment temperature meets the preset temperature condition and the indoor environment humidity meets the preset humidity condition, the circulation pump is started to pump the heat medium in the heat exchange device into the dew removal pipe.

[0018] As an improvement of the above solution, the controller is also used for:

[0019] Get real-time ambient temperature and humidity;

[0020] According to the real-time ambient temperature and the real-time ambient humidity, matching a corresponding working time ratio in a preset control database;

[0021] The circulating pump is controlled to start or stop within a preset cycle according to the working time ratio until the real-time ambient temperature and the real-time ambient humidity are re-obtained next time.

[0022] As a preferred solution, the controller is also used for:

[0023] Get real-time ambient temperature and humidity;

[0024] Calculating the working time ratio according to the real-time ambient temperature and the real-time ambient humidity;

[0025] The circulating pump is controlled to start or stop within a preset cycle according to the working time ratio until the real-time ambient temperature and the real-time ambient humidity are re-obtained next time.

[0026] Among them, the working time ratio α=δ T ×T+δ R ×R,δ T is the preset temperature coefficient, δ R is the preset humidity coefficient, T is the real-time ambient temperature, and R is the real-time ambient humidity.

[0027] Preferably, a first pipeline is arranged between the compressor and the condenser;

[0028] The heat medium in the dew removal circulation pipeline contacts the first pipeline through the heat exchange device and performs heat exchange with the refrigerant in the refrigeration circulation pipeline.

[0029] As a preferred solution, the heat exchange device is also used to store the heat transferred from the refrigerant in the refrigeration circulation pipeline to the heat medium in the dew removal circulation pipeline.

[0030] Preferably, the heat exchange device consists of a closed cavity and four pipe openings;

[0031] The refrigeration cycle pipeline passes through the cavity through two pipeline openings on the cavity, contacts with the heat medium inside the cavity, and transfers heat;

[0032] The other two pipeline openings on the cavity serve as a heat medium outlet and a heat medium inlet of the dew removal circulation pipeline respectively.

[0033] As an improvement of the above solution, the refrigeration cycle pipeline passing through the cavity is configured as a U-shaped structure.

[0034] As an improvement to the above solution, a portion of the refrigeration cycle pipeline passing through the cavity is a sheet-like structure.

[0035] An embodiment of the present invention further provides a dew removal control method for a refrigerator, the refrigerator comprising:

[0036] A refrigeration system, the refrigeration system comprising a compressor, a condenser, a capillary tube and an evaporating tube, wherein the compressor, the condenser, the capillary tube and the evaporating tube are sequentially connected through pipelines to form a refrigeration cycle pipeline;

[0037] A dehumidification system, the dehumidification system includes a dehumidification pipe configured on the refrigerator;

[0038] The dew removal system also includes a circulation pump and a heat exchange device;

[0039] The heat exchange device, the circulation pump and the dew removal pipe are connected in sequence through pipelines to form a dew removal circulation pipeline;

[0040] The circulation pump is used to control the flow of the heat medium in the circulation pipeline;

[0041] The heat exchange device is used to transfer heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline;

[0042] Temperature sensor, used to detect ambient temperature;

[0043] Humidity sensor, used to detect ambient humidity;

[0044] Controller;

[0045] The method comprises:

[0046] In response to the received dew removal control signal, obtaining the current ambient temperature and the current ambient humidity;

[0047] When the current ambient temperature and the current ambient humidity meet preset conditions, the circulation pump is started to pump the heat medium in the heat exchange device into the dew removal pipe.

[0048] Compared with the prior art, the refrigerator and the dew removal control method of the refrigerator disclosed in the present invention include a refrigeration system and a dew removal system; the refrigeration system includes a compressor, a condenser, a capillary tube and an evaporation tube, the compressor, the condenser, the capillary tube and the evaporation tube are connected in sequence through a pipeline to form a refrigeration circulation pipeline; the dew removal system includes a dew removal tube configured on the refrigerator; the dew removal system also includes a circulation pump and a heat exchange device; the heat exchange device, the circulation pump and the dew removal tube are connected in sequence through a pipeline to form a dew removal circulation pipeline; the circulation pump is used to control the flow of the heat medium in the circulation pipeline; the heat exchange device is used to transfer heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline. By adding a dew removal system, the refrigerant of the compressor is used to heat the heat medium of the dew removal system, and then the dew removal is controlled by the circulation pump to improve the efficiency of dew removal. When dew removal is performed, the liquid in the dew removal tube does not use the refrigerant in the refrigeration system, the dew removal system is distinguished from the refrigeration system separately, and the influence of dew removal on the refrigeration of the refrigerator is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention;

[0050] Figure 2 is a schematic structural diagram of a refrigeration system of a refrigerator provided in an embodiment of the present invention;

[0051] Figure 3 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0052] Figure 4 is a schematic structural diagram of a refrigeration cycle pipeline provided by an embodiment of the present invention;

[0053] Figure 5 It is a schematic diagram of the structure of a dehumidification circulation pipeline provided by an embodiment of the present invention;

[0054] Figure 6 is a schematic diagram of the flow of work performed by the controller in an embodiment of the present invention;

[0055] Figure 7 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0056] Figure 8 It is a schematic diagram of the flow of work performed by the controller provided by the present invention in an embodiment;

[0057] Fig. 9 is a schematic flow chart of the work performed by the controller provided by the present invention in another embodiment;

[0058] Fig.10It is a partial structural schematic diagram of a refrigerator provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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.

[0060] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] See also Figure 1 , is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention. The embodiment of the present invention provides a refrigerator, including a box body 101, in which a storage chamber 102 is provided, including a refrigerating chamber and / or a freezing chamber 103 for storing items with preservation or freezing requirements, and also includes a refrigeration system 104 for performing the refrigeration operation of the refrigerator.

[0064] It should be noted that the refrigerator performs refrigeration operation through the refrigeration system to provide cold energy to the storage chamber so as to maintain the storage chamber at a constant low temperature. Figure 2, is a structural schematic diagram of a refrigeration system of a refrigerator provided in an embodiment of the present invention, wherein the refrigeration system is composed of a compressor 201, a condenser 202, a drying filter 203, a capillary tube 204 and an evaporator 205, and the working structure of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process.

[0065] The compression process is as follows: plug in the power cord of the refrigerator, and when the box needs to be cooled, the compressor starts to work, and the low-temperature, low-pressure refrigerant is sucked into the compressor, compressed into high-temperature, high-pressure superheated gas in the compressor cylinder, and then discharged into the condenser; the condensation process is as follows: the high-temperature, high-pressure refrigerant gas dissipates heat through the condenser, the temperature continues to drop, and is gradually cooled to a saturated vapor at room temperature and high pressure, and further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature. The pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows: the condensed refrigerant saturated liquid flows into the capillary after the moisture and impurities are filtered out by the drying filter, and the refrigerant is throttled and depressurized through it, and the refrigerant becomes a wet vapor at room temperature and low pressure; the evaporation process is as follows: it then begins to absorb heat and vaporize in the evaporator, which not only reduces the temperature of the evaporator and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator returns to the compressor again, repeating the above process, transferring the heat in the refrigerator to the air outside the box, and achieving the purpose of refrigeration.

[0066] It should be noted that the above embodiment is only a specific structure and working principle of a conventional refrigerator. The refrigerator disclosed in this embodiment may also have the structure of the above-mentioned existing refrigerator to achieve corresponding functions.

[0067] A refrigerator provided in an embodiment of the present invention comprises: a refrigeration system, wherein the refrigeration system comprises a compressor, a condenser, a capillary tube and an evaporation tube, wherein the compressor, the condenser, the capillary tube and the evaporation tube are sequentially connected through a pipeline to form a refrigeration cycle pipeline;

[0068] A dehumidification system, the dehumidification system includes a dehumidification pipe configured on the refrigerator;

[0069] The dew removal system also includes a circulation pump and a heat exchange device;

[0070] The heat exchange device, the circulation pump and the dew removal pipe are connected in sequence through pipelines to form a dew removal circulation pipeline;

[0071] The circulation pump is used to control the flow of the heat medium in the circulation pipeline;

[0072] The heat exchange device is used for transferring heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline.

[0073] Specifically, see Figure 3 , is a schematic structural diagram of a refrigerator provided by another embodiment of the present invention, wherein the refrigerator 10 comprises: a refrigeration cycle pipeline 401 constituted by a refrigeration system, and a dew removal cycle pipeline 402 constituted by a dew removal system;

[0074] See also Figure 4 , which is a schematic diagram of the structure of the refrigeration cycle pipeline provided by an embodiment of the present invention. The refrigeration system is composed of a compressor 201, a condenser 202, a capillary tube 204 and an evaporator 205, the refrigerant outlet of the compressor 201 is connected to the refrigerant inlet of the condenser 202 through a pipeline, the refrigerant outlet of the condenser 202 is connected to the refrigerant inlet of the capillary tube 204 through a pipeline, the refrigerant outlet of the capillary tube 204 is connected to the refrigerant inlet of the evaporator 205 through a pipeline, and the refrigerant outlet of the evaporator 205 is connected to the refrigerant inlet of the compressor 201, thereby forming a refrigeration cycle pipeline 401.

[0075] The refrigeration cycle is filled with refrigerant. When the refrigerator is refrigerating, the refrigerant starts from the compressor, enters the condenser, then enters the capillary tube, and then enters the evaporator, where it evaporates and refrigerates. Then it enters the suction side of the compressor to complete a refrigeration cycle.

[0076] It should be noted that the drying filter is a structural component of the refrigeration cycle pipeline, and its presence or absence does not affect the normal operation of the refrigerator.

[0077] It should be noted that when the refrigerator is heating or dehumidifying, its working principle is similar to the above principle and will not be elaborated here.

[0078] See also Figure 5 , is a schematic diagram of the dehumidification circulation pipeline structure provided by an embodiment of the present invention. The dehumidification system includes a dehumidification pipe 301, a circulation pump 302, and a heat exchange device 303; the heat medium outlet of the heat exchange device 303 is connected to the heat medium inlet of the circulation pump 302 through a pipeline, the heat medium outlet of the circulation pump 302 is connected to the inlet of the dehumidification pipe 301 through a pipeline, the outlet of the dehumidification pipe 301 is connected to the heat medium inlet of the heat exchange device 303 through a pipeline, and the heat exchange device 303, the circulation pump 302, and the dehumidification pipe 301 constitute a dehumidification circulation pipeline 501.

[0079] The dew removal circulation pipeline is filled with heat medium, and the heat medium in the dew removal circulation pipeline can flow through the pumping of the circulation pump. The dew removal pipe is generally arranged around the freezer door seal of the refrigerator, and the dew removal pipe is fixed by the fixing clamp base at the top of the inner top of the refrigerator shell. The condensation on the outer surface of the refrigerator is eliminated by the temperature of the medium-temperature and high-pressure heat medium flowing in the dew removal pipe.

[0080] The refrigeration circulation pipeline 401 of the refrigeration system and the dew removal circulation pipeline 501 of the dew removal system exchange heat through the heat exchange device of the dew removal system. The heat exchange device realizes heat transfer between the refrigerant and the heat medium in the refrigeration circulation pipeline by contacting the refrigeration circulation pipeline.

[0081] When the refrigerator is in the refrigeration state, the refrigerant discharged from the exhaust pipe of the compressor has a high temperature. By contacting the heat exchange device, the heat of the refrigerant is transferred to the dehumidification circulation pipeline. Because the pipeline is surrounded by liquid heat medium, the heat medium absorbs the heat of the refrigerant in the exhaust pipe and cools the refrigerant at the same time. The cooled refrigerant flows into the condenser. The temperature of the heat medium in the dehumidification system gradually increases through heat exchange. When dehumidification needs to be started, the circulation pump is turned on at this time. The circulation pump starts, and the heat medium in the heat exchange device enters the inlet of the dehumidification pipe, circulates through the dehumidification pipe, heats and dehumidifies the position it passes through, and finally passes through the outlet of the dehumidification pipe and returns to the bottom of the circulation system. This cycle repeats and heats and dehumidifies the position of the refrigerator that needs to be dehumidified.

[0082] It should be noted that the heat exchange device is specifically a device or component structure that performs heat exchange by heat conduction. During specific implementation, it is only necessary to realize the function of heat transfer between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline. Those skilled in the art can design the corresponding heat exchange device according to the actual structure to achieve the corresponding effect.

[0083] This embodiment adds a dehumidification system, uses the refrigerant of the compressor to heat the heat medium of the dehumidification system, and then controls the dehumidification by a circulating pump to improve the efficiency of dehumidification. During the specific dehumidification, the liquid in the dehumidification pipe does not use the refrigerant in the refrigeration system. The dehumidification system is distinguished from the refrigeration system separately, thereby reducing the impact of dehumidification on the refrigeration of the refrigerator.

[0084] In another embodiment provided by the present invention, the refrigerator further comprises:

[0085] Temperature sensor, used to detect indoor ambient temperature;

[0086] Humidity sensor, used to detect indoor environmental humidity;

[0087] The controller is used to perform dehumidification control. In specific implementation, see Figure 6 , is a flowchart of the work performed by the controller in an embodiment of the present invention, wherein the controller performs the following steps:

[0088] S1, in response to the received dew removal control signal, obtaining the indoor environment temperature and the indoor environment humidity;

[0089] S2, when the indoor environment temperature meets the preset temperature condition, and the indoor environment humidity meets the preset humidity condition, start the circulation pump to pump the heat medium in the heat exchange device into the dew removal pipe.

[0090] When this embodiment is implemented, see Figure 7 , is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention.

[0091] The refrigerator further includes a temperature sensor 701, a humidity sensor 702 and a controller 703;

[0092] The temperature sensor 701 is used to detect the indoor environment temperature.

[0093] The humidity sensor 702 is used to detect the indoor humidity.

[0094] When controlling specific work, see Figure 8 , is a flow chart of the work performed by the controller provided by the present invention in an embodiment, and the controller specifically performs the following steps:

[0095] Step S801, start the dew removal control function, that is, after the controller receives the dew removal control signal,

[0096] Step S802, obtaining the indoor environment temperature and the indoor environment humidity, that is, obtaining the indoor environment temperature and the indoor environment humidity through a temperature sensor and a humidity sensor respectively;

[0097] Step S803, determining whether the indoor ambient temperature is within a preset temperature range;

[0098] If not, return to step S802;

[0099] If yes, execute step S804;

[0100] Step S804, determining whether the indoor environmental humidity is within a preset humidity range;

[0101] If not, return to step S802;

[0102] If yes, execute step S805;

[0103] Step S805, starting the circulation pump; that is, pumping the heat medium in the heat exchange device to the dew removal pipe through the circulation pump.

[0104] In the specific implementation of this embodiment, when the humidity of the refrigerator cycle air is low or the temperature is low, and dehumidification is not required, the circulation pump is not turned on, and the refrigerator is not dehumidified at this time. When the refrigerator needs to be dehumidified, that is, when the temperature and humidity meet certain conditions, dehumidification is performed. Efficient dehumidification is achieved, and power consumption and heat loss caused by blind operation of the dehumidification system are avoided.

[0105] In another embodiment provided by the present invention, the controller is further used for:

[0106] Get real-time ambient temperature and humidity;

[0107] According to the real-time ambient temperature and the real-time ambient humidity, matching a corresponding working time ratio in a preset control database;

[0108] The circulating pump is controlled to start or stop within a preset cycle according to the working time ratio until the real-time ambient temperature and the real-time ambient humidity are re-obtained next time.

[0109] When this embodiment is implemented, see Fig. 9 , is a flow chart of the work performed by the controller provided by the present invention in another embodiment. When performing dehumidification control, the controller specifically performs the following steps:

[0110] Step S901, start the dew removal control function, that is, after the controller receives the dew removal control signal,

[0111] Step S902, obtaining the real-time ambient temperature and the real-time ambient humidity, that is, obtaining the indoor ambient temperature and the indoor ambient humidity through the temperature sensor and the humidity sensor respectively;

[0112] Step S903, matching the corresponding working time ratio, that is, matching the corresponding working time ratio in a preset control database according to the real-time ambient temperature and the real-time ambient humidity;

[0113] Step S904, controlling the circulation pump to start or stop within a preset cycle period according to the working time ratio, that is, calculating the on-time and off-time of the circulation pump within the cycle period according to the working time ratio, and controlling the circulation pump to work for the cycle period according to the calculated on-time and off-time, and returning to step S902.

[0114] The control database includes the corresponding relationship between the real-time ambient temperature t, the real-time ambient humidity R and the working time ratio. The control database may specifically include a corresponding control data table, see Table 1.

[0115] Table 1 Control data table

[0116]

[0117]

[0118] The circulation pump matches the working time ratio through the above control data table, with each 10 minutes as a cycle, and calculates the time for starting up for circulation heating.

[0119] By correspondingly controlling the working time ratio of the circulation pump through temperature and humidity and periodically matching the working time ratio, it is possible to accurately achieve dew removal control and precisely control the dew removal efficiency.

[0120] In another embodiment provided by the present invention, the controller is further used for:

[0121] Get real-time ambient temperature and humidity;

[0122] Calculating the working time ratio according to the real-time ambient temperature and the real-time ambient humidity;

[0123] The circulating pump is controlled to start or stop within a preset cycle according to the working time ratio until the real-time ambient temperature and the real-time ambient humidity are re-obtained next time.

[0124] Among them, the working time ratio α=δ T ×T+δ R ×R,δ T is the preset temperature coefficient, δ R is the preset humidity coefficient, T is the real-time ambient temperature, and R is the real-time ambient humidity.

[0125] As a parallel implementation of the above embodiment, the controller specifically performs the following steps when performing dew removal control:

[0126] Start the dehumidification control function, that is, after the controller receives the dehumidification control signal,

[0127] Acquire the real-time ambient temperature and the real-time ambient humidity, that is, acquire the indoor ambient temperature and the indoor ambient humidity respectively through the temperature sensor and the humidity sensor;

[0128] Calculating the working time ratio, that is, matching the corresponding working time ratio in a preset control database according to the real-time ambient temperature and the real-time ambient humidity;

[0129] The working time ratio is calculated using a preset calculation model;

[0130] Working time ratio α=δ T ×T+δ R ×R,δ T is the preset temperature coefficient, δ R is the preset humidity coefficient, T is the real-time ambient temperature, and R is the real-time ambient humidity.

[0131] It should be noted that the temperature coefficient and humidity coefficient can be set according to actual conditions.

[0132] The circulation pump is controlled to start or stop within a preset cycle according to the working time ratio, that is, the on-time and off-time of the circulation pump within the cycle are calculated according to the working time ratio, and the circulation pump is controlled to work for the cycle time according to the calculated on-time and off-time until the next time the real-time ambient temperature and the real-time ambient humidity are re-acquired, the working time ratio is recalculated, and the circulation pump control for the next cycle is performed.

[0133] The working time ratio is calculated by a calculation model, and a working time ratio can be matched for each temperature and each humidity, thereby realizing stepless control of the working time ratio.

[0134] In another embodiment provided by the present invention, a first pipeline is arranged between the compressor and the condenser;

[0135] The heat medium in the dew removal circulation pipeline contacts the first pipeline through the heat exchange device and performs heat exchange with the refrigerant in the refrigeration circulation pipeline.

[0136] When this embodiment is implemented, see Fig.10 , is a partial structural diagram of a refrigerator provided in an embodiment of the present invention, wherein a first pipeline is arranged between the refrigerant outlet of the compressor and the refrigerant inlet of the condenser in the refrigeration cycle pipeline.

[0137] The heat exchange device is installed at the first pipeline position, and the heat exchange device realizes heat exchange between the heat medium in the dehumidification circulation pipeline and the refrigerant in the refrigeration circulation pipeline by contacting with the first pipeline.

[0138] The condenser is also equipped with a cooling fan and an evaporating dish.

[0139] Placing the heat exchange device behind the refrigerant outlet of the compressor can reduce heat loss of the refrigerant in the refrigeration cycle pipeline, improve heat conduction efficiency, and improve dew removal efficiency.

[0140] In another embodiment provided by the present invention, the heat exchange device is also used to store the heat transferred from the refrigerant in the refrigeration circulation pipeline to the heat medium in the dew removal circulation pipeline.

[0141] In the specific implementation of this embodiment, the heat exchange device can not only conduct heat between the refrigeration circulation pipeline and the dew removal circulation pipeline, but also store heat, that is, store heat through a heat medium.

[0142] Through the heat storage function of the heat exchange device, dew removal can be performed when the refrigerator is not needed. Since the liquid has a large specific heat capacity, the heat can be stored and used when needed, thereby improving the dew removal efficiency through heat storage.

[0143] In another embodiment provided by the present invention, the heat exchange device is composed of a sealed cavity and four pipe openings;

[0144] The refrigeration cycle pipeline passes through the cavity through two pipeline openings on the cavity, contacts with the heat medium inside the cavity, and transfers heat;

[0145] The other two pipeline openings on the cavity serve as a heat medium outlet and a heat medium inlet of the dew removal circulation pipeline respectively.

[0146] When this embodiment is implemented, see Fig.10 , the heat exchange device includes a closed cavity and four pipeline openings arranged on the cavity;

[0147] Two of the four pipeline openings serve as interfaces of the dew removal circulation pipeline, and are respectively connected to the heat medium inlet of the circulation pump and the dew removal pipe outlet to form a dew removal circulation pipeline.

[0148] The other two pipeline openings serve as channels for the refrigeration cycle pipeline. The first pipe of the refrigeration cycle pipeline passes through the cavity through the two pipeline openings on the cavity and contacts the heat medium inside the cavity to achieve heat exchange between the refrigerant in the refrigeration cycle pipeline and the heat medium in the dew removal cycle pipeline.

[0149] The refrigeration circulation pipeline passes through the heat exchange medium and directly contacts the heat medium of the dew removal circulation pipeline, which can improve the heat conduction efficiency. Compared with the existing heat conduction method of contact between pipelines, the heat medium and refrigerant in this application only conduct heat through pipelines, which can reduce heat conduction losses between multi-layer materials.

[0150] The pipes passing through the interior of the heat exchange device are made of materials with high thermal conductivity to improve the thermal conductivity efficiency.

[0151] Through the cavity design, a large amount of heat medium can be accommodated to achieve heat conduction and heat storage, and energy-saving and high-efficiency dew removal system design can be realized at a low cost.

[0152] In another embodiment provided by the present invention, the pipeline of the refrigeration cycle pipeline passing through the cavity is configured as a U-shaped structure.

[0153] When this embodiment is implemented, see Fig.10 The pipeline passing through the interior of the heat exchange device is set to be U-shaped. Through the continuous winding design, the contact area between the refrigeration cycle pipeline and the heat medium inside the cavity is increased, thereby improving the heat conduction efficiency.

[0154] It should be noted that the part of the refrigeration cycle pipeline passing through the cavity can also use multiple parallel pipelines to increase the contact area.

[0155] In another embodiment provided by the present invention, a portion of the refrigeration cycle pipeline passing through the cavity is a sheet-like structure.

[0156] In the specific implementation of this embodiment, the pipeline passing through the interior of the heat exchange device is set as a sheet-like pipeline. Through the sheet-like design, the contact area between the refrigeration cycle pipeline and the heat medium inside the cavity is increased, thereby improving the heat conduction efficiency.

[0157] Another embodiment of the present invention provides a dew removal control method for a refrigerator, the refrigerator comprising:

[0158] A refrigeration system, the refrigeration system comprising a compressor, a condenser, a capillary tube and an evaporating tube, wherein the compressor, the condenser, the capillary tube and the evaporating tube are sequentially connected through pipelines to form a refrigeration cycle pipeline;

[0159] A dehumidification system, the dehumidification system includes a dehumidification pipe configured on the refrigerator;

[0160] The dew removal system also includes a circulation pump and a heat exchange device;

[0161] The heat exchange device, the circulation pump and the dew removal pipe are connected in sequence through pipelines to form a dew removal circulation pipeline;

[0162] The circulation pump is used to control the flow of the heat medium in the circulation pipeline;

[0163] The heat exchange device is used to transfer heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline;

[0164] Temperature sensor, used to detect ambient temperature;

[0165] Humidity sensor, used to detect ambient humidity;

[0166] Controller;

[0167] The method comprises:

[0168] In response to the received dew removal control signal, obtaining the current ambient temperature and the current ambient humidity;

[0169] When the current ambient temperature and the current ambient humidity meet preset conditions, the circulation pump is started to pump the heat medium in the heat exchange device into the dew removal pipe.

[0170] This embodiment uses the refrigerant of the compressor to heat the heat medium of the dew removal system, and then the circulation pump controls the dew removal to improve the efficiency of dew removal. During the specific dew removal, the liquid in the dew removal pipe does not use the refrigerant in the refrigeration system. The dew removal system is distinguished from the refrigeration system separately to reduce the impact of dew removal on the refrigeration of the refrigerator. When the air humidity or temperature in the refrigerator cycle is low and dew removal is not required, the circulation pump is not turned on, and the refrigerator is not dewed at this time. When the refrigerator needs to be dehumidified, that is, when the temperature and humidity meet certain conditions, dehumidification is carried out. Efficient dehumidification is achieved, and the power consumption and heat loss of the dehumidification system working blindly are avoided.

[0171] It should be noted that the refrigerator dehumidification control method provided in the embodiment of the present invention is the same as all the process steps executed by the refrigerator controller in the above embodiment, see Figure 6 The working principles and beneficial effects of the two correspond one to one. For the specific workflow diagram, see Figure 8-Figure 9 , so I will not go into details.

[0172] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0173] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: Including refrigeration system and dew removal system; The refrigeration system comprises a compressor, a condenser, a capillary tube and an evaporation tube, wherein the compressor, the condenser, the capillary tube and the evaporation tube are sequentially connected through pipelines to form a refrigeration cycle pipeline; The dew removal system comprises a dew removal pipe arranged on the refrigerator; The dew removal system also includes a circulation pump and a heat exchange device; The heat exchange device, the circulation pump and the dew removal pipe are connected in sequence through pipelines to form a dew removal circulation pipeline; The circulation pump is used to control the flow of the heat medium in the circulation pipeline; The heat exchange device is used for transferring heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: Temperature sensor, used to detect indoor ambient temperature; Humidity sensor, used to detect indoor environmental humidity; Controller for: In response to the received dew removal control signal, obtaining indoor environment temperature and indoor environment humidity; When the indoor environment temperature meets the preset temperature condition and the indoor environment humidity meets the preset humidity condition, the circulation pump is started to pump the heat medium in the heat exchange device into the dew removal pipe.

3. The refrigerator according to claim 2, characterized in that: The controller is also used for: Get real-time ambient temperature and humidity; According to the real-time ambient temperature and the real-time ambient humidity, matching a corresponding working time ratio in a preset control database; The circulating pump is controlled to start or stop within a preset cycle according to the working time ratio until the real-time ambient temperature and the real-time ambient humidity are re-obtained next time.

4. The refrigerator according to claim 2, characterized in that: The controller is also used for: Get real-time ambient temperature and humidity; Calculating the working time ratio according to the real-time ambient temperature and the real-time ambient humidity; The circulating pump is controlled to start or stop within a preset cycle according to the working time ratio until the real-time ambient temperature and the real-time ambient humidity are re-obtained next time. Among them, the working time ratio α=δ T ×T+δ R ×R,δ T is the preset temperature coefficient, δ R is the preset humidity coefficient, T is the real-time ambient temperature, and R is the real-time ambient humidity.

5. The refrigerator according to claim 1, characterized in that: A first pipeline is arranged between the compressor and the condenser; The heat medium in the dew removal circulation pipeline contacts the first pipeline through the heat exchange device and performs heat exchange with the refrigerant in the refrigeration circulation pipeline.

6. The refrigerator according to claim 1, characterized in that: The heat exchange device is also used to store heat transferred from the refrigerant in the refrigeration circulation pipeline to the heat medium in the dew removal circulation pipeline.

7. The refrigerator according to claim 1, characterized in that: The heat exchange device is composed of a closed cavity and four pipeline openings; The refrigeration cycle pipeline passes through the cavity through two pipeline openings on the cavity, contacts with the heat medium inside the cavity, and transfers heat; The other two pipeline openings on the cavity serve as a heat medium outlet and a heat medium inlet of the dew removal circulation pipeline respectively.

8. The refrigerator according to claim 7, characterized in that: The refrigeration cycle pipeline passing through the cavity is arranged in a U-shaped structure.

9. The refrigerator according to claim 7, characterized in that: The portion of the refrigeration cycle pipeline passing through the cavity is a sheet-like structure.

10. A refrigerator dehumidification control method, characterized in that: The refrigerator comprises: A refrigeration system, the refrigeration system comprising a compressor, a condenser, a capillary tube and an evaporating tube, wherein the compressor, the condenser, the capillary tube and the evaporating tube are sequentially connected through pipelines to form a refrigeration cycle pipeline; A dehumidification system, the dehumidification system includes a dehumidification pipe configured on the refrigerator; The dew removal system also includes a circulation pump and a heat exchange device; The heat exchange device, the circulation pump and the dew removal pipe are connected in sequence through pipelines to form a dew removal circulation pipeline; The circulation pump is used to control the flow of the heat medium in the circulation pipeline; The heat exchange device is used to transfer heat between the heat medium in the dew removal circulation pipeline and the refrigerant in the refrigeration circulation pipeline; Temperature sensor, used to detect ambient temperature; Humidity sensor, used to detect ambient humidity; Controller; The method comprises: In response to the received dew removal control signal, obtaining the current ambient temperature and the current ambient humidity; When the current ambient temperature and the current ambient humidity meet preset conditions, the circulation pump is started to pump the heat medium in the heat exchange device into the dew removal pipe.

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