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 compressor, a condenser, a first capillary tube, a first evaporator, a dew removal tube, an electric valve, a second capillary tube and a controller. A pipeline outlet of the compressor is sequentially connected with the condenser and the dew removal pipe in series through a pipeline and then is connected with a pipeline inlet of the electric valve, and a first pipeline outlet of the electric valve passes through a first branch composed of the first capillary pipe and the first evaporator and then is connected with a pipeline inlet of the compressor; a second pipeline outlet of the electric valve passes through a second branch composed of the second capillary tube and then is connected with a pipeline inlet of the compressor; and by controlling the opening or closing of the first pipeline outlet of the electric valve, whether the first evaporator performs refrigeration or not is controlled while the refrigerator performs dew removal. Dew can be independently removed, and the temperature change in the refrigerator is not affected.

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 passed through the dehumidification pipes to remove dehumidification using the high temperature of the refrigerant. However, when dehumidification is performed in this way, when the heat of the refrigerator condenser is used for dehumidification, the refrigerant needs to flow through the first evaporator for cooling at the same time. Dehumidification is accompanied by changes in the refrigerator temperature, making it difficult to maintain a stable temperature when the refrigerator is working. 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 perform dew removal independently without affecting the temperature change inside the refrigerator.

[0005] An embodiment of the present invention provides a refrigerator, comprising: a compressor, a condenser, a first capillary tube, and a first evaporator; the compressor, the condenser, the first capillary tube, and the first evaporator are sequentially connected through a pipeline to form a circulation pipeline;

[0006] The refrigerator further comprises a dew removal pipe, which is connected in series in a circulation pipeline between the condenser and the first capillary tube;

[0007] The refrigerator further comprises an electric valve, a second capillary tube and a controller;

[0008] The pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline. The first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; the second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a second branch composed of the second capillary tube.

[0009] By controlling the first pipeline outlet of the electric valve to be turned on or off, it is controlled whether the first evaporator performs refrigeration while the refrigerator is removing dew.

[0010] Preferably, the refrigerator further comprises:

[0011] A first temperature sensor, used to detect the indoor ambient temperature;

[0012] Humidity sensor, used to detect indoor environmental humidity;

[0013] Controller;

[0014] The controller is used to:

[0015] Get indoor ambient temperature and indoor ambient humidity;

[0016] When the indoor ambient temperature meets the preset first temperature range and the indoor ambient humidity meets the preset first humidity range, the first pipeline outlet of the electric valve is controlled to be closed and the second pipeline outlet is connected, and the circulation pipeline is switched to the second branch.

[0017] Furthermore, the controller is also used for:

[0018] When the indoor environment temperature meets the preset second temperature range and the indoor environment humidity meets the preset second humidity range, the first pipeline outlet of the electric valve is controlled to be turned on and the second pipeline outlet is controlled to be turned off, and the circulation pipeline is switched to the first branch;

[0019] The first temperature range has no intersection with the second temperature range, or the first humidity range has no intersection with the second humidity range.

[0020] As a preferred solution, the refrigerator further comprises:

[0021] A second temperature sensor, used to detect the temperature inside the refrigerator storage compartment;

[0022] The controller is also used for:

[0023] Obtaining the current temperature in the box and the conduction state of the electric valve;

[0024] When the current temperature in the box is lower than the preset low temperature threshold and the first pipeline outlet of the electric valve is in the conducting state, the first pipeline outlet of the electric valve is controlled to be closed and the second pipeline outlet is connected.

[0025] Furthermore, the controller is also used for:

[0026] When the current temperature in the box is greater than a preset high temperature threshold and the second pipeline outlet of the electric valve is connected, the first pipeline outlet of the electric valve is controlled to be connected and the second pipeline outlet is controlled to be closed;

[0027] Wherein, the high temperature threshold is greater than the low temperature threshold.

[0028] Preferably, the refrigerator further comprises: a second evaporator and a third capillary tube;

[0029] The first evaporator is used to cool the refrigerator compartment of the refrigerator;

[0030] The second evaporator is used to cool the freezer compartment of the refrigerator;

[0031] The third pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a third branch composed of the third capillary tube and the second evaporator;

[0032] The controller also controls whether the second evaporator performs refrigeration while the refrigerator is removing dew by controlling the third pipeline outlet of the electric valve to be turned on or off.

[0033] As a preferred solution, the refrigerator further comprises:

[0034] a third temperature sensor, used to detect the refrigeration temperature of the refrigeration chamber;

[0035] a fourth temperature sensor, used to detect the freezing temperature of the freezing chamber;

[0036] Controller;

[0037] The controller is also used for:

[0038] Acquiring the current refrigeration temperature, the current freezing temperature and the conduction state of the electric valve;

[0039] When the current refrigeration temperature is lower than the preset refrigeration low temperature threshold and the first pipeline outlet of the electric valve is connected, the first pipeline outlet of the electric valve is controlled to be closed;

[0040] When the current refrigeration temperature is greater than the preset refrigeration high temperature threshold and the first pipeline outlet of the electric valve is closed, controlling the first pipeline outlet of the electric valve to be open;

[0041] When the current freezing temperature is lower than the preset freezing low temperature threshold and the third pipeline outlet of the electric valve is connected, the third pipeline outlet of the electric valve is controlled to be closed;

[0042] When the current freezing temperature is greater than a preset freezing high temperature threshold and the third pipeline outlet of the electric valve is closed, the third pipeline outlet of the electric valve is controlled to be open.

[0043] Furthermore, the controller is also used for:

[0044] When the current refrigeration temperature is greater than the refrigeration high temperature threshold, and the current freezing temperature is greater than the freezing high temperature threshold, controlling the second pipeline outlet of the electric valve to close;

[0045] When the current refrigeration temperature is lower than the refrigeration low temperature threshold, and the current freezing temperature is lower than the freezing low temperature threshold, the second pipeline outlet of the electric valve is controlled to be open.

[0046] Preferably, the controller is further used for:

[0047] According to the indoor environment temperature and the indoor environment humidity, matching the working time ratio of the first pipeline outlet being turned on in a preset control database;

[0048] The first pipeline outlet is controlled to be open or closed according to the working time ratio.

[0049] The embodiment of the present invention also provides a dew removal control method for a refrigerator, the refrigerator comprising: a compressor, a condenser, a first capillary tube and a first evaporator; the compressor, the condenser, the first capillary tube and the first evaporator are sequentially connected through pipelines to form a circulation pipeline;

[0050] The refrigerator further comprises a dew removal pipe, which is connected in series in a circulation pipeline between the condenser and the first capillary tube;

[0051] The refrigerator further comprises an electric valve, a second capillary tube and a controller;

[0052] The pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline. The first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; the second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a second branch composed of the second capillary tube.

[0053] The method comprises:

[0054] By controlling the first pipeline outlet of the electric valve to be turned on or off, it is controlled whether the first evaporator performs refrigeration while the refrigerator is removing dew.

[0055] Compared with the prior art, the refrigerator and the dew removal control method of the refrigerator disclosed in the present invention include: a compressor, a condenser, a first capillary tube and a first evaporator; the compressor, the condenser, the first capillary tube and the first evaporator are connected in sequence through a pipeline to form a circulation pipeline; the refrigerator also includes a dew removal pipe, which is connected in series in the circulation pipeline between the condenser and the first capillary tube; the refrigerator also includes an electric valve, a second capillary tube and a controller; the pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline, the first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; the second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a second branch composed of the second capillary tube; by controlling the first pipeline outlet of the electric valve to be turned on or off, the refrigerator is controlled to control whether the first evaporator performs refrigeration while dew removal. Dew removal can be performed independently without affecting the temperature change inside the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention;

[0057] Figure 2 is a schematic structural diagram of a refrigeration system of a refrigerator provided in an embodiment of the present invention;

[0058] Figure 3 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0059] Figure 4 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0060] Figure 5 is a schematic diagram of the working process of the controller provided by the present invention under the first embodiment;

[0061] Figure 6 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0062] Figure 7 is a schematic diagram of the working process of the controller provided by the present invention in the second embodiment;

[0063] Figure 8 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0064] Fig. 9 is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0065] Fig.10is a schematic diagram of the working process of the controller provided by the present invention in the third embodiment;

[0066] Fig.11 It is a schematic diagram of the working process of the controller provided by the present invention in the fourth embodiment. DETAILED DESCRIPTION

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 a first evaporator 205, and the working structure of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process.

[0073] The compression process is as follows: plug in the power cord of the refrigerator, and when the box has a cooling demand, the compressor starts working, and the low-temperature, low-pressure refrigerant is sucked into the compressor, compressed into a 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 first evaporator, which not only reduces the temperature of the first evaporator and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the first 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.

[0074] 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.

[0075] A refrigerator provided in an embodiment of the present invention comprises: a compressor, a condenser, a first capillary tube and a first evaporator; the compressor, the condenser, the first capillary tube and the first evaporator are sequentially connected through pipelines to form a circulation pipeline;

[0076] The refrigerator further comprises a dew removal pipe, which is connected in series in a circulation pipeline between the condenser and the first capillary tube;

[0077] The refrigerator further comprises an electric valve, a second capillary tube and a controller;

[0078] The pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline. The first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; the second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a second branch composed of the second capillary tube.

[0079] The controller controls whether the first evaporator performs refrigeration while the refrigerator is removing dew by controlling the first pipeline outlet of the electric valve to be turned on or off.

[0080] 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 compressor 201, a condenser 202, a first capillary tube 206, a first evaporator 205, a dew removal pipe 301, an electric valve 302 and a second capillary tube 303.

[0081] The pipeline outlet of the compressor 201 is connected to the pipeline inlet of the condenser 202 through a pipeline, the pipeline outlet of the condenser 202 is connected to the pipeline inlet of the dew removal pipe 301, the pipeline outlet of the dew removal pipe 301 is connected to the pipeline inlet of the electric valve 302, the first pipeline outlet B of the electric valve 302 is connected to the pipeline inlet of the first capillary 206 through a pipeline, the pipeline outlet of the first capillary 206 is connected to the pipeline inlet of the first evaporator 205 through a pipeline, the pipeline outlet of the first evaporator 205 is connected to the pipeline inlet of the compressor 201 through a pipeline, the second pipeline outlet A of the electric valve 302 is connected to the pipeline inlet of the second capillary 303 through a pipeline, and the pipeline outlet of the second capillary 303 is connected to the pipeline inlet of the compressor 201 through a pipeline.

[0082] The first capillary 206 and the first evaporator 205 form a first branch; the second capillary 303 forms a second branch, and the first branch and the second branch are controlled to be connected to the circulation pipeline by controlling the conduction / closing between the pipeline inlet of the electric valve and the first pipeline outlet B and the second pipeline outlet A.

[0083] When the first branch is connected to the circulation pipeline, the refrigerant starts to flow from the compressor, then enters the condenser, then enters the dew-removing pipe, flows to the direction of the first branch through the electric valve, enters the first capillary tube for throttling, then enters the first evaporator for evaporation and heat absorption, and finally returns to the compressor for the next refrigeration cycle. When de-condensing through the de-condensing pipe, the first evaporator cools down the storage box of the refrigerator at the same time. When the second branch is connected to the circulation pipeline and the first branch is not connected to the circulation pipeline, the refrigerant starts to flow from the compressor, then enters the condenser, then enters the de-condensing pipe, flows to the direction of the second branch through the electric valve, enters the second capillary tube for throttling, and returns to the compressor. At this time, when de-condensing through the de-condensing pipe, no refrigerant flows through the evaporator, and the first evaporator does not cool down the storage box of the refrigerator, so the internal temperature of the refrigerator is not affected at this time.

[0084] By controlling the first pipeline outlet of the electric valve to be turned on or off, it is possible to control whether the first evaporator is put into operation, and whether the first evaporator performs refrigeration while the refrigerator is dehumidifying. In this way, refrigeration is not performed during dehumidification to avoid affecting the temperature of the refrigerator.

[0085] It should be noted that the electric valve can control the conduction or closure of the first pipeline outlet and the second pipeline outlet. The specific control process can be to select one of the first pipeline outlet and the second pipeline outlet to be connected and the other to be closed. There is an inevitable relationship between the conduction or closure of the first pipeline outlet and the second pipeline outlet. Another control method can be that the first pipeline outlet and the second pipeline outlet are controlled separately, that is, there is no inevitable relationship between the conduction and closure of the first pipeline outlet and the second pipeline outlet. In this case, when the control is performed, when the first pipeline outlet is connected, the second pipeline outlet can be selected to be connected or closed. When the second pipeline outlet is connected, the dew removal pipe removes dew while the evaporator is diverted through the second branch to reduce the refrigerant flowing through the first evaporator and control the refrigeration efficiency; when the second pipeline outlet is closed, the refrigerant flow rate flowing through the first evaporator is the highest, and efficient refrigeration is achieved; when the first pipeline outlet is closed, it is necessary to control the conduction of the second pipeline outlet, and form a circulation pipeline through the second branch to achieve separate dew removal. At this time, the first evaporator does not work and will not affect the internal temperature of the refrigerator.

[0086] In another embodiment provided by the present invention, the refrigerator further comprises:

[0087] A first temperature sensor, used to detect the indoor ambient temperature;

[0088] Humidity sensor, used to detect indoor environmental humidity;

[0089] Controller;

[0090] The controller is used to:

[0091] Get indoor ambient temperature and indoor ambient humidity;

[0092] When the indoor ambient temperature meets the preset first temperature range and the indoor ambient humidity meets the preset first humidity range, the first pipeline outlet of the electric valve is controlled to be closed and the second pipeline outlet is connected, and the circulation pipeline is switched to the second branch.

[0093] In the specific embodiment of this invention, see Figure 4 , is a schematic diagram of the structure of a refrigerator provided by another embodiment of the present invention; the refrigerator further includes a first temperature sensor 401, a humidity sensor 402 and a controller 403;

[0094] The first temperature sensor 401 is used to detect the indoor ambient temperature of the room where the refrigerator is located;

[0095] The humidity sensor 402 is used to detect the indoor environmental humidity in the room of the refrigerator;

[0096] The controller controls the refrigerator dehumidification by detecting the indoor ambient humidity and indoor ambient temperature. Figure 5 , is a schematic diagram of the working process of the controller provided by the present invention under the first embodiment; the specific control process of the controller includes the following steps:

[0097] Step S501, obtaining indoor ambient temperature T and indoor ambient humidity H;

[0098] Step S502, determining whether the indoor ambient temperature T is within the range of (-∞, 16°C]; that is, determining whether the indoor ambient temperature meets the preset first temperature range;

[0099] It should be noted that, in this embodiment, (-∞, 16°C] is used as the first temperature range to illustrate the specific execution process when the controller is working. In other embodiments, the first temperature range can be set or adjusted according to actual conditions, which will not be described in detail here.

[0100] If yes, execute step S503;

[0101] Step S503, determining whether the indoor environmental humidity H is within the range of [75%, 100%]; that is, determining whether the indoor environmental humidity meets the preset first humidity range;

[0102] It should be noted that, in this embodiment, [75%, 100%] is used as the first humidity range to illustrate the specific execution process when the controller is working. In other embodiments, the first humidity range can be set or adjusted according to actual conditions, which will not be elaborated here.

[0103] If yes, execute step S504;

[0104] If not, return to step S501;

[0105] Step S504, control the first pipeline outlet of the electric valve to be closed and the second pipeline outlet to be connected. That is, under the low temperature and high humidity condition where the indoor environment temperature meets the preset first temperature range and the indoor environment humidity meets the preset first humidity range, the circulation pipeline is switched to the second branch, and a dehumidification circulation loop is formed through the second branch. At this time, the refrigerant does not flow through the first evaporator, and the first evaporator does not work. At this time, the refrigerant keeps flowing between the condenser, the dehumidification pipe, and the compressor. The compressor maintains a relatively high temperature due to the need to work. At this time, the relatively high temperature refrigerant can heat the dehumidification pipe position of the refrigerator to remove dehumidification. The first evaporator does not work, and the temperature will not drop to a very low state because the refrigerator needs to continue to refrigerate, thereby maintaining the normal temperature of the refrigerator while dehumidifying.

[0106] In another embodiment provided by the present invention, the controller is further used for:

[0107] When the indoor environment temperature meets the preset second temperature range and the indoor environment humidity meets the preset second humidity range, the first pipeline outlet of the electric valve is controlled to be turned on and the second pipeline outlet is controlled to be turned off, and the circulation pipeline is switched to the first branch;

[0108] The first temperature range has no intersection with the second temperature range, or the first humidity range has no intersection with the second humidity range.

[0109] In the specific implementation of this embodiment, the controller performs refrigerator dehumidification control by detecting the indoor ambient humidity and indoor ambient temperature, see Figure 5 , the specific control process of the controller includes the following steps:

[0110] When the determination result of step S502 is no, that is, when the indoor ambient temperature T is not within the range of (-∞, 16°C], step S505 is executed;

[0111] Step S505, determining whether the indoor ambient temperature T is within the range of [30°C, +∞); that is, determining whether the indoor ambient temperature meets the preset second temperature range;

[0112] If yes, execute step S506;

[0113] If not, return to step S501;

[0114] Step S506, determining whether the indoor environmental humidity H is within the range of [0, 80%]; that is, determining whether the indoor environmental humidity meets the preset second humidity range;

[0115] It should be noted that, in this embodiment, [30°C, +∞) is used as the second temperature range, and [0, 80%] is used as the second humidity range to illustrate the specific execution process when the controller is working. In other embodiments, the second temperature range and the second humidity range can be set or adjusted according to actual conditions, which are not elaborated here. It is only necessary to satisfy that the first temperature range and the second temperature range have no intersection or the first humidity range and the second humidity range have no intersection, that is, it is impossible to meet the conditions of step S504 and step S507 at the same time.

[0116] If yes, execute step S507;

[0117] If not, return to step S501;

[0118] Step S507, control the first pipeline outlet of the electric valve to be turned on and the second pipeline outlet to be closed. That is, when the indoor environment temperature meets the preset second temperature range and the indoor environment humidity meets the high temperature of the preset second humidity range, the circulation pipeline is switched to the first branch, and a dehumidification refrigeration circulation loop is formed through the first branch. At this time, the refrigerant flows through the dehumidification pipe and the first evaporator, and the refrigerant keeps flowing between the condenser, the dehumidification pipe, the first evaporator, and the compressor. The compressor maintains a high temperature because it needs to work. At this time, the high-temperature refrigerant can heat the dehumidification pipe position of the refrigerator to remove dehumidification. The first evaporator works to continue cooling under high temperature conditions, supplement the heat loss of the refrigerator under high temperature conditions, and avoid excessive temperature of the refrigerator.

[0119] In another embodiment provided by the present invention, the refrigerator further comprises:

[0120] A second temperature sensor, used to detect the temperature inside the refrigerator storage compartment;

[0121] The controller is also used for:

[0122] Obtaining the current temperature in the box and the conduction state of the electric valve;

[0123] When the current temperature in the box is lower than the preset low temperature threshold and the first pipeline outlet of the electric valve is in the conducting state, the first pipeline outlet of the electric valve is controlled to be closed and the second pipeline outlet is connected.

[0124] In another embodiment provided by the present invention, see Figure 6 , is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention; the refrigerator further includes a second temperature sensor 601;

[0125] The second temperature sensor is arranged inside the refrigerator storage compartment and is used to detect the temperature inside the refrigerator storage compartment, ie, the refrigerating compartment or the freezing compartment.

[0126] The controller controls the refrigerator dehumidification by detecting the temperature inside the refrigerator. Figure 7 , is a schematic diagram of the working process of the controller provided by the present invention in the second embodiment; the specific control process of the controller includes the following steps:

[0127] Step S701, obtaining the current temperature t in the box and the conduction state of the electric valve, wherein the conduction state of the electric valve includes the control state of the first pipeline outlet and the second pipeline outlet of the electric valve.

[0128] Step S702, determining whether the current temperature t inside the box is less than -20°C, that is, determining whether the current temperature inside the box is less than a preset low temperature threshold.

[0129] It should be noted that, in this embodiment, -20°C is used as the low temperature threshold to illustrate the specific execution process when the controller is working. This low temperature threshold is specifically the low temperature threshold set when the freezer compartment is working. If the second temperature sensor is used to detect the temperature of the refrigerator compartment, the low temperature threshold can be set to 5°C. In other embodiments, the low temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0130] If yes, execute step S703;

[0131] Step S703, determining whether the first pipeline outlet of the electric valve is connected;

[0132] If yes, execute step S704;

[0133] If not, return to step S701;

[0134] Step S704, controlling the first pipeline outlet of the electric valve to be closed and the second pipeline outlet to be open.

[0135] When the current temperature inside the box is lower than the preset low temperature threshold and the first pipeline outlet of the electric valve is in the conductive state, the temperature of the refrigerator storage room is low and no refrigeration is needed. The second branch is used to form a dew removal circulation pipeline, and the first evaporator is cut out of the circulation pipeline to avoid continuous cooling of the first evaporator, which causes the internal temperature of the refrigerator to be too low, thereby keeping the internal temperature of the refrigerator stable.

[0136] In another embodiment provided by the present invention, the controller is further used for:

[0137] When the current temperature in the box is greater than a preset high temperature threshold and the second pipeline outlet of the electric valve is connected, the first pipeline outlet of the electric valve is controlled to be connected and the second pipeline outlet is controlled to be closed;

[0138] Wherein, the high temperature threshold is greater than the low temperature threshold.

[0139] In the specific implementation of this embodiment, the controller performs refrigerator dehumidification control by detecting the temperature inside the refrigerator, see Figure 7 , the specific control process of the controller also includes the following steps:

[0140] When the result of the judgment in step S702 is no, that is, the current temperature t in the box is not less than -20°C, that is, the current temperature in the box is not less than the preset low temperature threshold, step S705 is executed.

[0141] Step S705, determining whether the current temperature t inside the box is greater than -10°C, that is, determining whether the current temperature inside the box is greater than a preset high temperature threshold.

[0142] It should be noted that, in this embodiment, -10°C is used as the high temperature threshold to illustrate the specific execution process when the controller is working. This low temperature threshold is specifically the high temperature threshold set when the freezer compartment is working. If the second temperature sensor is used to detect the temperature of the refrigerator compartment, the high temperature threshold can be set to 12°C. In other embodiments, the low temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0143] If yes, execute step S706;

[0144] If not, return to step S701;

[0145] Step S706, determining whether the second pipeline outlet of the electric valve is connected;

[0146] If yes, execute step S707;

[0147] If not, return to step S701;

[0148] Step S707, controlling the first pipeline outlet of the electric valve to be open and the second pipeline outlet to be closed.

[0149] When the current temperature inside the box is greater than the low temperature threshold and the second pipeline outlet of the electric valve is connected, the temperature of the refrigerator storage room is high and needs to be refrigerated. The first branch is used to form a dew removal circulation pipeline, and the first evaporator is put into the circulation pipeline. The first evaporator is used to continuously cool down to avoid the internal temperature of the refrigerator being too high and to keep the internal temperature of the refrigerator stable.

[0150] It should be noted that there is no order in the process of judging and controlling the temperature inside the box. Fig.10 In the embodiment, the relationship between the temperature inside the box and the low temperature threshold is first determined, and then the relationship between the temperature inside the box and the high temperature threshold is determined. This is only used as an implementation method. In other embodiments, there is no restriction on the order of execution of these two judgments, and they can also be executed simultaneously.

[0151] In another embodiment provided by the present invention, the refrigerator further comprises: a second evaporator and a third capillary tube;

[0152] The evaporator is used to cool the refrigerator compartment of the refrigerator;

[0153] The second evaporator is used to cool the freezer compartment of the refrigerator;

[0154] The third pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a third branch composed of the third capillary tube and the second evaporator;

[0155] The controller also controls whether the second evaporator performs refrigeration while the refrigerator is removing dew by controlling the third pipeline outlet of the electric valve to be turned on or off.

[0156] When this embodiment is implemented, Figure 8 , is a structural schematic diagram of a refrigerator provided by another embodiment of the present invention;

[0157] The refrigerator further includes a second evaporator 801 and a third capillary tube 802;

[0158] The refrigerator includes a plurality of storage chambers with different temperatures. A common refrigerator generally includes a freezer chamber and a refrigerator chamber. The first evaporator is used to cool the refrigerator chamber, and the second evaporator is used to cool the freezer chamber.

[0159] It should be noted that, in this embodiment, the freezer and refrigerator are used as examples to illustrate the specific structure and control process of the refrigerator when there are multiple storage rooms. In other embodiments, the refrigerator may also include a variable temperature chamber, and its specific structure and control process are similar to the working principle of this embodiment, which will not be repeated here.

[0160] The third pipeline outlet C of the electric valve 302 is connected to the pipeline inlet of the third capillary 802 through a pipeline, the pipeline outlet of the third capillary 802 is connected to the pipeline inlet of the second evaporator 801, and the pipeline outlet of the second evaporator 801 is connected to the pipeline inlet of the compressor 201 through a pipeline.

[0161] The first capillary 206 and the first evaporator 205 constitute a first branch; the second capillary 303 constitutes a second branch, and the second evaporator 801 and the third capillary constitute a third branch. By controlling the conduction / closing between the pipeline inlet of the electric valve and the first pipeline outlet B, the second pipeline outlet A and the third branch C, the first branch, the second branch and the third branch are controlled to be connected to the circulation pipeline.

[0162] When the first branch is connected to the circulation pipeline, the refrigerant starts to flow from the compressor, then enters the condenser, and then enters the dew-removing pipe, flows to the direction of the first branch through the electric valve, enters the first capillary tube for throttling, and then enters the first evaporator for evaporation and heat absorption, cooling the refrigerator compartment, and finally returns to the compressor for the next refrigeration cycle. While dehumidifying through the dew-removing pipe, the first evaporator cools the refrigerator compartment at the same time.

[0163] When the third branch is connected to the circulation pipeline, the refrigerant starts to flow from the compressor, then enters the condenser, and then enters the dew-removing pipe, flows to the direction of the third branch through the electric valve, enters the third capillary tube for throttling, and then enters the second evaporator for evaporation and heat absorption, cooling the freezer compartment, and finally returns to the compressor for the next refrigeration cycle. While dehumidifying through the dew-removing pipe, the second evaporator cools the freezer compartment of the refrigerator at the same time.

[0164] When the second branch is connected to the circulation pipeline, and the first branch and the third branch are not connected to the circulation pipeline, the refrigerant starts to flow from the compressor, then enters the condenser, and then enters the dew-removing pipe, flows to the second branch through the electric valve, enters the second capillary tube for throttling, and returns to the compressor. At this time, when dehumidification is performed through the dehumidification pipe, no refrigerant flows through the evaporator, and the first evaporator and the second evaporator do not cool down the storage box of the refrigerator, so the internal temperature of the refrigerator is not affected at this time.

[0165] By controlling the pipeline outlet of the electric valve to be open or closed, it is possible to control whether the first evaporator and the second evaporator are put into operation, and control whether the refrigerator refrigerates the refrigerator compartment and the freezer compartment while removing dew, so that refrigeration is not performed during dew removal to avoid affecting the temperature of the refrigerator.

[0166] It should be noted that the electric valve can control the opening or closing of the first pipeline outlet, the second pipeline outlet and the third pipeline. The specific control process can be to select one of the first pipeline outlet, the second pipeline outlet or the third pipeline outlet to be opened and the other two to be closed. Another control method may be that the first pipeline outlet, the second pipeline outlet and the third pipeline outlet are controlled separately, that is, there is no necessary relationship between the opening and closing of the first pipeline outlet, the second pipeline outlet and the third pipeline outlet. In this case, when the control is performed, when the first pipeline outlet is opened, the second pipeline outlet and the third pipeline outlet can be selected to be opened or closed. When the second pipeline outlet is opened, the dew removal pipe removes dew and the second branch pair is used to shunt the refrigerant flowing through the first evaporator to control the refrigeration efficiency of the refrigerator compartment; when the third pipeline outlet is opened, the dew removal pipe removes dew and the second branch pair is used to shunt the refrigerant flowing through the second evaporator to control the refrigeration efficiency of the freezer compartment; when the second pipeline outlet is closed and the first pipeline outlet and the third pipeline are opened, the refrigerant flow rate flowing through the first evaporator and the second evaporator is the highest, realizing efficient refrigeration; when both the first pipeline outlet and the third pipeline outlet are closed, it is necessary to control the second pipeline outlet to be opened, and a circulation pipeline is formed through the second branch to realize separate dew removal. At this time, the first evaporator does not work and will not affect the internal temperature of the refrigerator. During specific control, the first branch, the second branch, and the third branch can be connected separately, or at least one of the first branch, the second branch, and the third branch can be selected to connect to the circulation pipeline, so as to realize different functions, including separate dew removal function, dew removal plus refrigerator compartment refrigeration function, dew removal plus freezer compartment refrigeration function, dew removal plus freezer compartment refrigeration plus refrigerator compartment refrigeration function. In this way, different storage rooms of the refrigerator can be refrigerated separately to keep the temperature of different storage rooms constant.

[0167] In another embodiment provided by the present invention, the refrigerator further comprises:

[0168] a third temperature sensor, used to detect the refrigeration temperature of the refrigeration chamber;

[0169] a fourth temperature sensor, used to detect the freezing temperature of the freezing chamber;

[0170] Controller;

[0171] The controller is also used for:

[0172] Acquiring the current refrigeration temperature, the current freezing temperature and the conduction state of the electric valve;

[0173] When the current refrigeration temperature is lower than the preset refrigeration low temperature threshold and the first pipeline outlet of the electric valve is connected, the first pipeline outlet of the electric valve is controlled to be closed;

[0174] When the current refrigeration temperature is greater than the preset refrigeration high temperature threshold and the first pipeline outlet of the electric valve is closed, controlling the first pipeline outlet of the electric valve to be open;

[0175] When the current freezing temperature is lower than the preset freezing low temperature threshold and the third pipeline outlet of the electric valve is connected, the third pipeline outlet of the electric valve is controlled to be closed;

[0176] When the current freezing temperature is greater than a preset freezing high temperature threshold and the third pipeline outlet of the electric valve is closed, the third pipeline outlet of the electric valve is controlled to be open.

[0177] When this embodiment is specifically implemented, in another embodiment provided by the present invention, see Fig. 9 , is a schematic diagram of the structure of a refrigerator provided by another embodiment of the present invention; the refrigerator further includes a third temperature sensor 901, a fourth temperature sensor 902 and a controller 403;

[0178] The third temperature sensor 901 is disposed inside the refrigerator compartment of the refrigerator and is used to detect the refrigeration temperature of the refrigerator compartment.

[0179] The fourth temperature sensor 902 is disposed inside the freezer compartment of the refrigerator and is used to detect the freezing temperature of the freezer compartment of the refrigerator.

[0180] The controller controls the refrigerator dehumidification by detecting the refrigeration temperature and the freezing temperature. Fig.10 , is a schematic diagram of the working process of the controller provided by the present invention in the third embodiment; the specific control process of the controller includes the following steps:

[0181] Step S1001, obtaining the current refrigeration temperature T1, the current freezing temperature T2 and the conduction state of the electric valve, wherein the conduction state of the electric valve includes the control states of the first pipeline outlet, the second pipeline outlet and the third pipeline outlet of the electric valve.

[0182] Step S1002, determining whether the current refrigeration temperature T1 is less than 5°C, that is, determining whether the current refrigeration temperature T1 is less than a preset refrigeration low temperature threshold.

[0183] It should be noted that, in this embodiment, 5°C is used as the refrigeration low temperature threshold to illustrate the specific execution process when the controller is working. In other embodiments, the refrigeration low temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0184] If yes, execute step S1003;

[0185] If not, execute step S1005;

[0186] Step S1003, determining whether the first pipeline outlet of the electric valve is connected;

[0187] If yes, execute step S1004;

[0188] If not, return to step S1001;

[0189] Step S1004, controlling the first pipeline outlet of the electric valve to close.

[0190] When the current refrigeration temperature is lower than the preset refrigeration low temperature threshold and the first pipeline outlet of the electric valve is connected, the temperature of the refrigerator refrigerator compartment is low and no refrigeration is needed. The first evaporator is cut out of the circulation pipeline to avoid continuous cooling of the first evaporator, which causes the temperature inside the refrigerator refrigerator compartment to be too low, thereby keeping the temperature inside the refrigerator refrigerator compartment stable.

[0191] Step S1005, determining whether the current refrigeration temperature T1 is greater than 15°C, that is, whether the current refrigeration temperature is greater than a preset refrigeration high temperature threshold.

[0192] It should be noted that, in this embodiment, 15°C is used as the refrigeration high temperature threshold to illustrate the specific execution process when the controller is working. In other embodiments, the refrigeration high temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0193] If yes, execute step S1006;

[0194] If not, return to step S1001;

[0195] Step S1006, determining whether the first pipeline outlet of the electric valve is closed;

[0196] If yes, execute step S1007;

[0197] If not, return to step S1001;

[0198] Step S1007, controlling the first pipeline outlet of the electric valve to be conductive.

[0199] When the current refrigeration temperature is greater than the refrigeration high temperature threshold and the first pipeline outlet of the electric valve is closed, the temperature of the refrigerator refrigerator compartment is high and needs to be refrigerated. A dew removal circulation pipeline is formed through the first branch, and the first evaporator is put into the circulation pipeline. The temperature is continuously reduced through the first evaporator to avoid the internal temperature of the refrigerator refrigerator compartment being too high and keep the internal temperature of the refrigerator refrigerator compartment stable.

[0200] The steps executed in parallel with step S1002 also include step S1008.

[0201] Step S1008, determining whether the current freezing temperature T2 is less than -20°C, that is, determining whether the current freezing temperature T2 is less than a preset refrigeration and freezing threshold.

[0202] It should be noted that, in this embodiment, -20°C is used as the freezing low temperature threshold to illustrate the specific execution process when the controller is working. In other embodiments, the freezing low temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0203] If yes, execute step S1009;

[0204] If not, execute step S1011;

[0205] Step S1009, determining whether the third pipeline outlet of the electric valve is connected;

[0206] If yes, execute step S1010;

[0207] If not, return to step S1001;

[0208] Step S1010, controlling the third pipeline outlet of the electric valve to be closed.

[0209] When the current freezing temperature is lower than the preset freezing low temperature threshold and the third pipeline outlet of the electric valve is connected, the temperature of the refrigerator freezer is low and no refrigeration is needed. The third evaporator is cut out of the circulation pipeline to avoid continuous cooling of the third evaporator, which causes the temperature inside the refrigerator freezer to be too low, so as to keep the temperature inside the refrigerator freezer stable.

[0210] Step S1011, determining whether the current freezing temperature T1 is greater than -10°C, that is, whether the current freezing temperature is greater than a preset freezing high temperature threshold.

[0211] It should be noted that, in this embodiment, -10°C is used as the freezing high temperature threshold to illustrate the specific execution process when the controller is working. In other embodiments, the freezing high temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0212] If yes, execute step S1012;

[0213] If not, return to step S1001;

[0214] Step S1012, determining whether the third pipeline outlet of the electric valve is closed;

[0215] If yes, execute step S1013;

[0216] If not, return to step S1001;

[0217] Step S1013, controlling the third pipeline outlet of the electric valve to be conductive.

[0218] When the current freezing temperature is greater than the freezing high temperature threshold and the third pipeline outlet of the electric valve is closed, the temperature of the refrigerator freezer is high and needs to be refrigerated. A dew removal circulation pipeline is formed through the third branch, and the third evaporator is put into the circulation pipeline. The temperature is continuously reduced through the third evaporator to avoid excessively high temperature inside the refrigerator freezer and keep the temperature inside the refrigerator freezer stable.

[0219] It should be noted that there is no order in which to judge and control the temperature of the refrigerator compartment and freezer compartment. Fig.10 In the embodiment, the relationship between the current refrigerated (frozen) temperature and the refrigerated (frozen) low temperature threshold is first determined, and then the relationship between the current refrigerated (frozen) temperature and the refrigerated (frozen) high temperature threshold is determined. This is only used as an implementation method. In other embodiments, there is no order restriction on the execution of these two judgments, and they can also be executed simultaneously.

[0220] In another embodiment provided by the present invention, the controller is further used for:

[0221] When the current refrigeration temperature is greater than the refrigeration high temperature threshold, and the current freezing temperature is greater than the freezing high temperature threshold, controlling the second pipeline outlet of the electric valve to close;

[0222] When the current refrigeration temperature is lower than the refrigeration low temperature threshold, and the current freezing temperature is lower than the freezing low temperature threshold, the second pipeline outlet of the electric valve is controlled to be open.

[0223] In the specific implementation of this embodiment, the controller performs refrigerator dehumidification control by detecting the refrigeration temperature and the freezing temperature, see Fig.11 , is a schematic diagram of the working process of the controller provided by the present invention in the fourth embodiment; the specific control process of the controller includes the following steps:

[0224] Step S1101, obtaining the current refrigeration temperature T1 and the current freezing temperature T2.

[0225] Step S1102, determining whether the current refrigeration temperature T1 is greater than 15°C, that is, determining whether the current refrigeration temperature T1 is greater than a preset refrigeration high temperature threshold.

[0226] If yes, execute step S1103;

[0227] If not, execute step S1105;

[0228] Step S1103, determining whether the current freezing temperature T2 is greater than -10°C, that is, determining whether the current freezing temperature T2 is greater than a preset freezing high temperature threshold.

[0229] If yes, execute step S1104;

[0230] If not, execute step S1101;

[0231] It should be noted that, in this embodiment, -10°C is used as the freezing high temperature threshold, and 15°C is used as the refrigeration high temperature threshold to illustrate the specific execution process when the controller is working. In other embodiments, the refrigeration high temperature threshold and the freezing high temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0232] Step S1004, controlling the second pipeline outlet of the electric valve to close;

[0233] That is, when the current freezing temperature is greater than the freezing high temperature threshold, and when the current refrigeration temperature is greater than the refrigeration high temperature threshold, the temperatures of the refrigerator's freezer and refrigerator compartment are both high, and both require refrigeration. At this time, the second branch is cut out to avoid the second branch shunt causing insufficient refrigeration efficiency of the first evaporator and the second evaporator, thereby improving the refrigeration efficiency of the refrigerator compartment and the freezer compartment, so that the temperatures of the refrigerator compartment and the freezer compartment can be restored as soon as possible.

[0234] Step S1105, determining whether the current refrigeration temperature T1 is less than 5°C, that is, determining whether the current refrigeration temperature T1 is less than a preset refrigeration low temperature threshold.

[0235] If yes, execute step S1106;

[0236] If not, return to step S1101;

[0237] Step S1106, determining whether the current freezing temperature T2 is less than -20°C, that is, determining whether the current freezing temperature T2 is less than a preset freezing low temperature threshold.

[0238] If yes, execute step S1107;

[0239] If not, return to step S1101;

[0240] It should be noted that, in this embodiment, -20°C is used as the freezing low temperature threshold and 5°C is used as the refrigeration low temperature threshold to illustrate the specific execution process when the controller is working. In other embodiments, the refrigeration low temperature threshold and the freezing low temperature threshold can be set or adjusted according to actual conditions, which will not be elaborated here.

[0241] Step S1007, controlling the second pipeline outlet of the electric valve to be conductive.

[0242] That is, when the current refrigeration temperature is lower than the refrigeration low temperature threshold, and the current freezing temperature is lower than the freezing low temperature threshold, the temperatures of the freezer and refrigerator compartments of the refrigerator are both low. At this time, the first branch and the third branch will be cut out to prevent the first evaporator and the second evaporator from continuing to work and causing the temperatures of the refrigerator and freezer compartments to continue to drop. In order to maintain the normal dehumidification work of the dehumidification pipe, the second branch needs to be opened at this time. The second branch constitutes a refrigerant circulation pipeline to realize a single dehumidification function.

[0243] In another embodiment provided by the present invention, the working time ratio of the first pipeline outlet being turned on is matched in a preset control database according to the indoor environment temperature and the indoor environment humidity;

[0244] The first pipeline outlet is controlled to be open or closed according to the working time ratio.

[0245] In the specific implementation of this embodiment, the controller specifically performs the following steps when performing dew removal control:

[0246] Start the dehumidification control function, that is, after the controller receives the dehumidification control signal,

[0247] Acquire the indoor environment temperature and the indoor environment humidity, that is, acquire the indoor environment temperature and the indoor environment humidity through a temperature sensor and a humidity sensor respectively;

[0248] Matching the corresponding working time ratio, that is, matching the working time ratio of the first pipeline outlet being turned on in a preset control database according to the indoor ambient temperature and the indoor ambient humidity;

[0249] The first pipeline outlet is controlled to be on or off for a predetermined period of time according to the working time ratio, and the first pipeline outlet is controlled to be on or off according to the calculated on or off time.

[0250] The control database includes the corresponding relationship between the indoor environment temperature t, the indoor environment humidity R and the working time ratio. The control database may specifically include a corresponding control data table, see Table 1.

[0251] Table 1 Control data table

[0252]

[0253] The circulating pump matches the working time ratio through the above control data table, and calculates the working time ratio of the first pipeline outlet being open every 10 minutes as a cycle.

[0254] By correspondingly controlling the working time ratio of the first pipeline outlet of the electric valve by temperature and humidity, and periodically matching the working time ratio, it is possible to accurately realize dew removal control and precisely control the dew removal efficiency.

[0255] Another embodiment of the present invention provides a dew removal control method for a refrigerator, the refrigerator comprising:

[0256] The refrigerator comprises: a compressor, a condenser, a first capillary tube and a first evaporator; the compressor, the condenser, the first capillary tube and the first evaporator are sequentially connected through pipelines to form a circulation pipeline;

[0257] The refrigerator further comprises a dew removal pipe, which is connected in series in a circulation pipeline between the condenser and the first capillary tube;

[0258] The refrigerator further comprises an electric valve, a second capillary tube and a controller;

[0259] The pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline. The first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; the second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a second branch composed of the second capillary tube.

[0260] The method comprises:

[0261] By controlling the first pipeline outlet of the electric valve to be turned on or off, it is controlled whether the first evaporator performs refrigeration while the refrigerator is removing dew.

[0262] 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 5 The working principles and beneficial effects of the two correspond one to one. For the specific workflow diagram, see Figure 6 , Fig.10 and Fig.11 , so I will not go into details.

[0263] 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.

[0264] 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: include: A compressor, a condenser, a first capillary tube and a first evaporator; the compressor, the condenser, the first capillary tube and the first evaporator are sequentially connected through pipelines to form a circulation pipeline; The refrigerator further comprises a dew removal pipe, which is connected in series in a circulation pipeline between the condenser and the first capillary tube; The refrigerator further comprises an electric valve, a second capillary tube and a controller; The pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline, and the first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; The second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through the second branch formed by the second capillary tube; By controlling the first pipeline outlet of the electric valve to be turned on or off, it is controlled whether the first evaporator performs refrigeration while the refrigerator is removing dew.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: A first temperature sensor, used to detect the indoor ambient temperature; Humidity sensor, used to detect indoor environmental humidity; Controller; The controller is used to: Get indoor ambient temperature and indoor ambient humidity; When the indoor ambient temperature meets the preset first temperature range and the indoor ambient humidity meets the preset first humidity range, the first pipeline outlet of the electric valve is controlled to be closed and the second pipeline outlet is connected, and the circulation pipeline is switched to the second branch.

3. The refrigerator according to claim 2, characterized in that: The controller is also used for: When the indoor environment temperature meets the preset second temperature range and the indoor environment humidity meets the preset second humidity range, the first pipeline outlet of the electric valve is controlled to be turned on and the second pipeline outlet is controlled to be turned off, and the circulation pipeline is switched to the first branch; The first temperature range has no intersection with the second temperature range, or the first humidity range has no intersection with the second humidity range.

4. The refrigerator according to claim 2, characterized in that: The refrigerator further comprises: A second temperature sensor, used to detect the temperature inside the refrigerator storage compartment; The controller is also used for: Obtaining the current temperature in the box and the conduction state of the electric valve; When the current temperature in the box is lower than the preset low temperature threshold and the first pipeline outlet of the electric valve is in the conducting state, the first pipeline outlet of the electric valve is controlled to be closed and the second pipeline outlet is connected.

5. The refrigerator according to claim 4, characterized in that: The controller is also used for: When the current temperature in the box is greater than a preset high temperature threshold and the second pipeline outlet of the electric valve is connected, the first pipeline outlet of the electric valve is controlled to be connected and the second pipeline outlet is controlled to be closed; Wherein, the high temperature threshold is greater than the low temperature threshold.

6. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: a second evaporator and a third capillary tube; The first evaporator is used to cool the refrigerator compartment of the refrigerator; The second evaporator is used to cool the freezer compartment of the refrigerator; The third pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a third branch composed of the third capillary tube and the second evaporator; The controller also controls whether the second evaporator performs refrigeration while the refrigerator is removing dew by controlling the third pipeline outlet of the electric valve to be turned on or off.

7. The refrigerator according to claim 6, characterized in that The refrigerator further comprises: a third temperature sensor, used to detect the refrigeration temperature of the refrigeration chamber; a fourth temperature sensor, used to detect the freezing temperature of the freezing chamber; Controller; The controller is also used for: Acquiring the current refrigeration temperature, the current freezing temperature and the conduction state of the electric valve; When the current refrigeration temperature is lower than the preset refrigeration low temperature threshold and the first pipeline outlet of the electric valve is connected, the first pipeline outlet of the electric valve is controlled to be closed; When the current refrigeration temperature is greater than the preset refrigeration high temperature threshold and the first pipeline outlet of the electric valve is closed, controlling the first pipeline outlet of the electric valve to be open; When the current freezing temperature is lower than the preset freezing low temperature threshold and the third pipeline outlet of the electric valve is connected, the third pipeline outlet of the electric valve is controlled to be closed; When the current freezing temperature is greater than a preset freezing high temperature threshold and the third pipeline outlet of the electric valve is closed, the third pipeline outlet of the electric valve is controlled to be open.

8. The refrigerator according to claim 7, characterized in that: The controller is also used for: When the current refrigeration temperature is greater than the refrigeration high temperature threshold, and the current freezing temperature is greater than the freezing high temperature threshold, controlling the second pipeline outlet of the electric valve to close; When the current refrigeration temperature is lower than the refrigeration low temperature threshold, and the current freezing temperature is lower than the freezing low temperature threshold, the second pipeline outlet of the electric valve is controlled to be open.

9. The refrigerator according to claim 2, characterized in that: The controller is also used for: According to the indoor environment temperature and the indoor environment humidity, matching the working time ratio of the first pipeline outlet being turned on in a preset control database; The first pipeline outlet is controlled to be open or closed according to the working time ratio.

10. A refrigerator dehumidification control method, characterized in that: The refrigerator comprises: a compressor, a condenser, a first capillary tube and a first evaporator; the compressor, the condenser, the first capillary tube and the first evaporator are sequentially connected through pipelines to form a circulation pipeline; The refrigerator further comprises a dew removal pipe, which is connected in series in a circulation pipeline between the condenser and the first capillary tube; The refrigerator further comprises an electric valve, a second capillary tube and a controller; The pipeline outlet of the compressor is connected to the pipeline inlet of the electric valve after being connected in series with the condenser and the dew removal pipe through a pipeline. The first pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a first branch composed of the first capillary tube and the first evaporator; the second pipeline outlet of the electric valve is connected to the pipeline inlet of the compressor after passing through a second branch composed of the second capillary tube. The method comprises: By controlling the first pipeline outlet of the electric valve to be turned on or off, it is controlled whether the first evaporator performs refrigeration while the refrigerator is removing dew.

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