CN114719515B - Control method of refrigerator - Google Patents

Control method of refrigerator Download PDF

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Publication number
CN114719515B
CN114719515B CN202110002302.2A CN202110002302A CN114719515B CN 114719515 B CN114719515 B CN 114719515B CN 202110002302 A CN202110002302 A CN 202110002302A CN 114719515 B CN114719515 B CN 114719515B
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CN
China
Prior art keywords
ice making
refrigerant
refrigerator
refrigeration loop
refrigeration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110002302.2A
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Chinese (zh)
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CN114719515A (en
Inventor
李晓峰
刘山山
刘建如
戚斐斐
曹东强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Qingdao Haier Refrigerator Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Refrigerator Co Ltd
Priority to CN202110002302.2A priority Critical patent/CN114719515B/en
Publication of CN114719515A publication Critical patent/CN114719515A/en
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Publication of CN114719515B publication Critical patent/CN114719515B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices

Abstract

The invention provides a control method of a refrigerator, which comprises the following steps: s1, receiving an ice making instruction; s2, controlling a solenoid valve to limit the flow of the refrigerant in a first refrigeration loop and controlling the solenoid valve to allow the flow of the refrigerant in a second refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode, the first refrigeration loop and the second refrigeration loop are connected in parallel with an inlet side of a compressor and an outlet side of a condenser, the first refrigeration loop is used for providing cooling capacity for a freezing chamber, and the second refrigeration loop is used for providing cooling capacity for an ice making chamber; and S3, detecting that the temperature in the ice making chamber reaches a preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop. By cutting off the refrigerating circuit for the freezing chamber during ice making and stopping the flow of the refrigerant in the refrigerating circuit, the amount of the refrigerant entering the ice making branch can be reduced, and uncontrolled refrigerant distribution caused by the refrigerant series flow during the switching of the refrigerating circuit in the working process is prevented, so that the working reliability of the refrigerating system is improved.

Description

Control method of refrigerator
Technical Field
The invention relates to the technical field of refrigeration, in particular to a control method of a refrigerator with an ice maker.
Background
The existing refrigerator capable of realizing ice making is characterized in that the ice making is needed to be carried out below 0 ℃, and the ice making machine is needed to be placed in the freezing chamber, so that a user needs to open a door of the freezing chamber to take ice out when taking the ice.
In order to facilitate the use of users, many refrigerators are provided with an ice maker on a refrigerating chamber door of the refrigerator, and a dispenser through which ice is taken is provided outside the refrigerating chamber door. The cold air in the refrigerating evaporator or the freezing chamber, namely the ice making chamber and the refrigerating chamber or the freezing chamber share the evaporator, is used for cooling the ice making machine by a fan air supply mode, so that the ice making machine can make water into ice cubes. Because the ice maker is usually placed at the upper part of the refrigeration door, long air guide pipes are required to guide cold air into the ice making chamber from the evaporator bin or the freezing chamber, a large amount of cold energy is lost due to long transmission paths, and meanwhile, the air guide pipes are required to be placed on a refrigeration heat preservation layer with thinned refrigeration side walls, so that the problem of condensation is easy to occur; and secondly, the ice making compartment is influenced by the refrigerating compartment or the freezing compartment, the temperature cannot be controlled independently, the refrigerating compartment is insufficient in cooling capacity during ice making and refrigeration, and the temperature rises rapidly. In addition, due to the circulation of the cold air, the phenomenon of odor tainting is unavoidable in ice making, and the ice making is inconvenient to independently control.
In order to prevent the phenomenon of odor mixing, an independent refrigerating system or a separate evaporator can be used for cooling the ice making compartments, for example, the same refrigerating system is used for cooling the respective compartments through different evaporators, and because the different compartments need different amounts of cooling, a series flow of the refrigerant can occur in the working process, so that the refrigerant distribution is not controlled, and the refrigerating system is damaged or the cooling capacity supply is not matched with the cooling capacity requirement of the respective compartments, therefore, the prior art needs to be improved.
Disclosure of Invention
The invention aims to provide a control method of a refrigerator, which can realize independent control of ice making and more reliable operation of a refrigerating system.
The invention provides a refrigerator, which comprises the following steps:
s1, receiving an ice making instruction;
s2, controlling a solenoid valve to limit the flow of the refrigerant in a first refrigeration loop and controlling the solenoid valve to allow the flow of the refrigerant in a second refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode, the first refrigeration loop and the second refrigeration loop are connected in parallel with an inlet side of a compressor and an outlet side of a condenser, the first refrigeration loop is used for providing cooling capacity for a freezing chamber, and the second refrigeration loop is used for providing cooling capacity for an ice making chamber;
and S3, detecting that the temperature in the ice making chamber reaches a preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop.
As a further improvement of an embodiment of the present invention, in the step S3, the control solenoid valve allows the refrigerant in the first refrigeration circuit to flow, and the refrigerator is operated in the compartment cooling mode until reaching the shutdown point, and the compressor is controlled to be stopped.
As a further improvement of one embodiment of the present invention, the refrigerator is controlled to alternately perform the ice making and cooling mode and the compartment cooling mode for a first preset time before the temperature of the ice making compartment is detected to reach the preset temperature.
As a further improvement of an embodiment of the present invention, in the ice making and cooling mode, the electromagnetic valve is controlled to close the inlet of the first refrigeration circuit first, and close the outlet of the first refrigeration circuit after the second preset time.
As a further improvement of an embodiment of the invention, in the ice making and cooling mode, the fan in the ice making chamber is controlled to be synchronously started.
As a further improvement of an embodiment of the present invention, in the compartment cooling mode, the control solenoid valve closes the inlet of the second refrigeration circuit first, and closes the outlet of the second refrigeration circuit after a second preset time.
The invention also relates to another control method of the refrigerator, which comprises the following steps:
s1, receiving an ice making instruction;
s2, controlling a solenoid valve to limit the flow of the refrigerant in a first refrigeration loop and controlling the solenoid valve to allow the flow of the refrigerant in a second refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode, the first refrigeration loop and the second refrigeration loop are connected in parallel with an inlet side of a compressor and an outlet side of a condenser, the first refrigeration loop is used for providing cooling capacity for a freezing chamber, and the second refrigeration loop is used for providing cooling capacity for an ice making chamber;
s3, controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop and controlling the electromagnetic valve to allow the flow of the refrigerant in the first refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode.
As a further improvement of an embodiment of the present invention, the steps S2 and S3 are alternately performed for a first preset time until reaching a shutdown point, and the compressor is controlled to be shutdown.
As a further improvement of an embodiment of the present invention, in the ice making and cooling mode, the electromagnetic valve is controlled to close the inlet of the first refrigeration circuit first, and close the outlet of the first refrigeration circuit after the second preset time.
As a further improvement of an embodiment of the present invention, in the compartment cooling mode, the control solenoid valve closes the inlet of the second refrigeration circuit first, and closes the outlet of the second refrigeration circuit after a second preset time.
Compared with the prior art, the refrigerator provided by the invention has the advantages that the independent refrigerating loop is adopted for ice making, the influence of the cold quantity required by the refrigerating compartment is avoided, the cold quantity requirement of the ice making compartment can be independently controlled, the two ends of the refrigerating loop are sealed during ice making and refrigerating, and the flow of the internal refrigerant is stopped, so that the quantity of the refrigerant entering the ice making loop is reduced, the refrigerant series flow can not occur during the switching of the refrigerating loop, and the use of a refrigerating system is more reliable.
Drawings
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Fig. 1 is a schematic cross-sectional view of a refrigerator in an embodiment of the present invention.
Fig. 2 is a system block diagram of a refrigerating system of the refrigerator of fig. 1.
Fig. 3 is a schematic view of the constitution of a refrigerating system of the refrigerator of fig. 1.
Fig. 4 is a control flow diagram of one embodiment of the refrigerator of fig. 1;
fig. 5 is a control flow chart of another embodiment of the refrigerator of fig. 1.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.
It will be appreciated that terms such as "upper," "lower," "outer," "inner," and the like, as used herein, refer to spatially relative positions and are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
As shown in fig. 1 to 3, the refrigerator includes a cabinet 10, a door 20 movably connected to the cabinet, and a refrigerating system, the cabinet 10 defines a refrigerating compartment including a refrigerating compartment 11 and a freezing compartment 12, the refrigerating compartment 11 and the freezing compartment 12 are disposed from top to bottom, the door 20 is used for opening and closing the refrigerating compartment 11, the refrigerating compartment 11 or the door 20 is provided with an ice making compartment 21, an ice maker (not shown) is disposed in the ice making compartment 21, a dispenser (not shown) selectively communicating with the ice making compartment 21 is disposed on the door 20, and ice cubes made by the ice maker can be discharged from the dispenser. In this embodiment, the refrigerating compartments include a freezing compartment and a refrigerating compartment, and more compartments, such as a variable temperature compartment, may be included.
The refrigerating system comprises a compressor and a condenser connected to the outlet side of the compressor, the compressor 31 is arranged at the bottom of the box body 10, and the refrigerating system further comprises a first refrigerating circuit and a second refrigerating circuit which are connected in parallel to the inlet side of the compressor and the outlet side of the condenser, wherein the first refrigerating circuit is used for providing cold energy for the freezing chamber, and the second refrigerating circuit is used for providing cold energy for the ice making chamber. The first refrigeration circuit herein is not limited to providing cold to the freezing compartment, but may include compartments other than an ice making compartment, such as a refrigerating compartment and/or a temperature changing compartment.
In this embodiment, the first refrigeration circuit may be referred to as a freezing circuit, which includes a freezing capillary 313 and a freezing evaporator 312 connected to an outlet side of the freezing capillary 313, wherein the freezing capillary 313 is connected to an outlet side of the condenser, and the freezing evaporator 312 is connected to an inlet side of the compressor 31. The freezing evaporator 312 is provided at the rear of the freezing chamber 12 for cooling the freezing chamber 12 or for cooling the refrigerating chamber 11 and the freezing chamber 12. The second refrigeration circuit may be referred to as an ice-making circuit, which includes an ice-making capillary tube 323 and an ice-making evaporator 322 connected to an outlet side of the ice-making capillary tube 323, the ice-making evaporator 322 being disposed in the ice-making chamber 21, wherein the ice-making capillary tube 232 is connected to an outlet side of the condenser, and the ice-making evaporator 322 is connected to an inlet side of the compressor 31. That is, after the refrigerant is cooled from the compressor 31 to the condenser, the refrigerant optionally enters the freezing capillary 313 and the ice making capillary 323, and the refrigerant returns to the compressor 31 after reaching the freezing evaporator 312 through the freezing capillary 313, and the refrigerant returns to the ice making evaporator 322 through the ice making capillary 323, and then also returns to the compressor 31. Thus, the refrigerating processes of the freezing chamber 12 and the ice making chamber 21 can be independently controlled.
The compartment cooling mode may be implemented when the refrigerant flows in the first refrigeration circuit, and the ice making cooling mode may be implemented when the refrigerant flows in the second refrigeration circuit. Because the ice making evaporator 322 and the freezing evaporator 312 have different pressures, the ice making circuit requires less refrigerant, and in order to prevent refrigerant flow from being disturbed during switching of the refrigeration circuits during operation, the refrigerant flow in the first refrigeration circuit may be allowed during the compartment cooling mode while the refrigerant flow in the second refrigeration circuit may be restricted during the ice making cooling mode. In addition, in the case of the chamber cooling mode, whether or not to restrict the flow of the refrigerant in the second refrigeration circuit may be selected.
Specifically, the first electromagnetic valve 35 is connected to the outlet side of the condenser, the second electromagnetic valve 36 is connected to the inlet side of the compressor 31, the refrigerator further comprises a controller connected to the first electromagnetic valve 35 and the second electromagnetic valve 36, the inlet side of the first refrigeration circuit and the inlet side of the second refrigeration circuit are both connected to the first electromagnetic valve 35, the outlet side of the first refrigeration circuit and the outlet side of the second refrigeration circuit are both connected to the second electromagnetic valve 36, and the controller allows and restricts the flow of the refrigerant in the first refrigeration circuit and/or the second refrigeration circuit by controlling the first electromagnetic valve 35 and the second electromagnetic valve 36. That is, solenoid valves are provided at both the outlet side of the condenser and the inlet side of the compressor 31, and both ends of the freezing circuit are sealed by controlling the solenoid valves during ice making and cooling, and the flow of the refrigerant therein is stopped, thereby reducing the amount of the refrigerant entering the ice making circuit.
In this embodiment, the number of the first electromagnetic valve 35 and the second electromagnetic valve 36 is one, which is convenient for the arrangement of the refrigeration system, specifically, the first electromagnetic valve 35 is configured as a one-in two-out valve, which includes an inlet A1 and two outlets, namely, an ice-making outlet B1 and a refrigeration outlet C1; the second solenoid valve 36 is configured as a two-in-one-out valve including two inlets, namely, an ice-making inlet B2 and a refrigerating inlet C2, and one outlet A2. In the ice making and cooling mode, the controller can control the first inlet valve, the second outlet valve and the first inlet valve to close the refrigerating outlet C1 and control the second inlet valve, the first outlet valve and the second inlet valve to close the refrigerating inlet C2, so that two ends of the first refrigerating loop are sealed, and the flow of the refrigerant in the first refrigerating loop is limited. Further, in order to prevent the second refrigeration circuit from being starved, the refrigeration outlet C1 may be closed first and then the refrigeration inlet C2 may be closed, in this embodiment, the refrigeration outlet C1 may be controlled to be closed for a preset time, and then the refrigeration inlet C2 may be closed, where the preset time is preferably between 0.5 minutes and 1.5 minutes, preferably 1 minute, so that the second refrigeration circuit is effectively prevented from being starved without affecting refrigeration.
In addition, in the compartment cooling mode, the controller can control the one-inlet-two-outlet valve to close the ice making outlet B1 and control the two-inlet-one-outlet valve to close the ice making inlet B2, so that two ends of the second refrigerating circuit are sealed, and the flow of the refrigerant in the second refrigerating circuit is limited. Likewise, to prevent the first refrigeration circuit from being starved, the ice-making outlet B1 may be closed first and then the ice-making inlet B2 may be closed. In this embodiment, the ice making outlet B1 may be controlled to be closed and then the ice making inlet B2 may be closed after a preset time, and the preset time is preferably between 0.5 minutes and 1.5 minutes, preferably 1 minute, so that the first refrigeration circuit is effectively prevented from being starved on the premise of not affecting refrigeration.
By providing an independent refrigeration circuit to cool the ice making chamber 21 alone, no cool air circulation exists between the ice making chamber 21 and the refrigeration chamber, and ice cubes made in the ice making chamber 21 are high in crystal clarity and free from smell tainting. The independent refrigeration circuit is not affected by the cooling capacity required by the refrigeration compartment, and can independently control the cooling capacity requirement of the ice making compartment 21.
In this embodiment, a freezing evaporator 312 may be provided at the rear of the freezing compartment 12 for providing cold to the refrigerating compartment 11 and the freezing compartment 12. Two evaporators, namely a freezing evaporator and a refrigerating evaporator, can be arranged at the rear part of the freezing chamber and the rear part of the refrigerating chamber respectively, can be connected in series along a refrigerating loop, and can be connected in parallel. The refrigerating system further includes a dew removing pipe 34 connected between the condenser and the first solenoid valve 35, the condenser includes two back condensers 32 and side plate condensers 33 connected in series with each other, and the two condensers are disposed at different positions of the refrigerator, thereby improving a heat radiation effect. In the first refrigeration circuit, the first accumulator 315 is connected to the outlet side of the freezing evaporator 312, so that the compressor 31 is prevented from being damaged by the excessive refrigerant.
In the present embodiment, the direction in which the refrigerating chamber 11 and the freezing chamber 12 are arranged from top to bottom is defined as the height direction of the refrigerator, the direction in which the user opens the refrigerator to face the refrigerator door and to face away from the refrigerator door is defined as the front-rear direction of the refrigerator, and the direction perpendicular to the height direction and the front-rear direction is defined as the width direction of the refrigerator. In the refrigeration system, the two parts can be directly connected or indirectly connected.
Further, the ice making chamber 21 is disposed on the door 20, the condenser is connected with the ice making evaporator through a refrigerant pipe assembly, the ice making evaporator 322 is connected with the compressor 31 through an ice making air return pipe assembly, the refrigerant pipe assembly and the ice making air return pipe assembly are connected with the plate heat exchanger 324, and the plate heat exchanger 324 is buried in the foaming layer of the door 20. By arranging the ice making chamber 21 in the door body 20, and arranging the ice making evaporator 322 in the ice making chamber 21, a complicated air duct is not required to be arranged for supplying air to the ice making chamber 21, so that the cold energy loss caused by cold air delivery is avoided, and the refrigerating efficiency is improved. In addition, connect refrigerant pipe subassembly and ice making muffler subassembly in plate heat exchanger 324, and plate heat exchanger 324 buries the foaming layer of the body of locating in, and refrigerant pipe subassembly and ice making muffler subassembly can exchange heat in plate heat exchanger 324 in the body of door, promotes the heat transfer effect of two, like this, through the ice making muffler subassembly part after the heat transfer, even if expose in the environment also can not produce the risk of condensation.
With continued reference to fig. 1, the refrigerant tube assembly includes a first flexible tube 41 and the ice making muffler assembly includes a second flexible tube 42, which may be a hose of PTEF or rubber material, with both ends of the hose being connectable to a metal tube. Wherein, the door body 20 is rotatably connected with the box body 10 through a hinge, and an upper hinge box 61 for accommodating the hinge is arranged at the top of the refrigeration compartment; the first flexible tube 453 and the second flexible tube 463 are each disposed within the upper hinge box 61. By arranging the first flexible tube 41 and the second flexible tube 42 in the upper hinge box 61, the door can be flexibly deformed when being opened and closed, and the overall refrigerant transportation is not affected, that is, the distribution of the refrigerant tube assembly and the ice making air return tube assembly does not affect the opening and closing of the door body 20, and the door body 20 and the outer side of the box body 10 are not exposed to affect the appearance.
In addition, in the second refrigeration circuit, the outlet side of the ice making evaporator 322 is connected to the second liquid storage 325, which inevitably results in too much refrigerant in the ice making evaporator when the ice making circuit is independently refrigerating, so that the second liquid storage 325 is needed to be first entered and then the compressor 31 in order to avoid the liquid refrigerant from being hit and not directly entering the compressor 31. In addition, a fan 43 may be provided above the ice making evaporator 322, or a fan may be provided in other areas of the ice making chamber, to circulate cool air in the ice making chamber 21 to accelerate ice making.
In this embodiment, the ice maker includes an ice tray for holding ice making water, and the ice making evaporator 322 includes a refrigerant pipe in direct contact with the bottom of the ice tray for heat exchange, an outlet side of the refrigerant pipe is connected to the plate heat exchanger 324, and a second reservoir 325 is connected between the outlet side of the refrigerant pipe and the plate heat exchanger. The ice making chamber is also internally provided with an ice storage box, the ice storage box is positioned below the ice making machine, the ice tray is connected with a metal plate 45, the metal plate 45 is in direct contact with the refrigerant pipe and fixes the refrigerant pipe at the bottom of the ice tray, the fan 43 can drive air flow to circulate between the metal plate and the ice storage box, the metal plate 45 is arranged to enlarge the area of the evaporator, and meanwhile, the fixing of the refrigerant pipe is facilitated.
Further, the compressor 31 is disposed in a press bin at the bottom of the box, an evaporation pan (not shown) is disposed in the press bin, a drainage structure 71 is disposed at the bottom of the ice making evaporator 322, a drain pipe 72 is communicated between the drainage structure 71 and the evaporation pan, a lower hinge box 62 for accommodating the hinge is disposed at the bottom of the refrigeration compartment, and the drain pipe 72 passes through the lower hinge box 62. By providing the drainage structure 71 at the bottom of the ice making evaporator 322, the drainage of the defrost water on the ice making evaporator 322 is facilitated, and the defrost water is directly introduced into the evaporation pan of the press bin, and can be evaporated together with the defrost water of other evaporators, thereby simplifying the overall structure of the refrigerator.
In order to enable the refrigerating system to refrigerate efficiently, particularly to avoid overhigh temperature of a freezing chamber during ice making and refrigeration, an ice making room temperature sensor connected with a controller is arranged in an ice making room, and before the temperature detected by the ice making room temperature sensor reaches a preset temperature, the controller controls a room cooling mode and an ice making cooling mode to be alternately carried out at preset time intervals; the temperature detected by the ice making temperature sensor reaches a preset temperature, and the controller controls the compartment cooling mode to be performed and restricts the flow of the refrigerant in the second refrigeration circuit. In the compartment cooling mode, the refrigeration system may cease to operate when a shutdown point is reached.
The embodiment of the invention also relates to a refrigerating system of the refrigerator, and the constitution and the function of the refrigerating system are as described above and are not repeated here.
Referring to fig. 4, the refrigerator provided in the above embodiment further relates to a control method for a refrigerator, including the steps of:
s1, receiving an ice making instruction;
s2, controlling an electromagnetic valve to limit the flow of the refrigerant in the first refrigeration loop, controlling the electromagnetic valve to allow the flow of the refrigerant in the second refrigeration loop, and operating the refrigerator in an ice making and cooling mode, wherein the first refrigeration loop and the second refrigeration loop are connected in parallel with the inlet side of the compressor and the outlet side of the condenser, the first refrigeration loop is used for providing cooling capacity for the freezing chamber, and the second refrigeration loop is used for providing cooling capacity for the ice making chamber;
and S3, detecting that the temperature in the ice making chamber reaches a preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop.
By cutting off the refrigerating circuit for the freezing chamber during ice making and stopping the flow of the refrigerant in the refrigerating circuit, the amount of the refrigerant entering the ice making branch can be reduced, and uncontrolled refrigerant distribution caused by the refrigerant series flow during the switching of the refrigerating circuit in the working process is prevented, so that the working reliability of the refrigerating system is improved.
The received ice making instruction may be that the amount of ice cubes in the ice storage box is less than a preset value, or that a user takes a certain amount of ice cubes, or that the user reserves to take ice cubes, and that the temperature in the ice making chamber is lower than a preset temperature, the temperature in the ice making chamber needs to be ensured to prevent ice cubes from melting, and so on.
In addition, the flow of the refrigerant in the first refrigeration loop is limited, and the flow of the refrigerant in the second refrigeration loop is allowed, namely, the refrigeration system is operated in an ice making and cooling mode, and when the ice making and cooling mode is adopted, the fan in the ice making chamber can be controlled to be synchronously started so as to accelerate cooling. Similarly, the refrigerant flow in the first refrigeration circuit, i.e., the compartment cooling mode, is allowed, and at this time, it may be selected whether the refrigerant flow in the second refrigeration circuit needs to be shut off, e.g., the ice making cooling and the cooling compartment cooling need to be performed simultaneously, and the refrigerant flows in both refrigeration circuits may be allowed.
Further, before the temperature in the ice making chamber reaches the preset temperature, in order to avoid that the first refrigeration loop is cut off to cause the temperature in the refrigeration chamber to be too high, the control method further comprises switching to the refrigeration chamber cooling mode after the ice making cooling mode is operated for a first preset time, namely controlling the electromagnetic valve to allow the refrigerant in the first refrigeration loop to flow. Preferably, the ice making cooling mode and the refrigerating compartment cooling mode alternately run for the same first preset time, or alternatively run for different preset times until the temperature in the ice making compartment is detected to reach the preset temperature. The preset time is preferably between 3 minutes and 10 minutes, and in this embodiment, is preferably 4-6 minutes, so as to achieve a better refrigeration effect.
The specific operation of controlling the solenoid valve to limit the flow of refrigerant in the first refrigeration circuit may be to close the inlet and outlet of the first refrigeration circuit, i.e. to close the refrigeration outlet C1 of the first solenoid valve 35 of the first refrigeration circuit into which refrigerant enters and the refrigeration inlet C2 of the second solenoid valve 36 of the first refrigeration circuit out; the specific operation of controlling the solenoid valve to limit the flow of the refrigerant in the second refrigeration circuit may be to close the inlet and outlet of the second refrigeration circuit, that is, to close the ice making outlet B1 of the first solenoid valve 35 of the refrigerant entering the second refrigeration circuit and the ice making inlet B2 of the second solenoid valve 36 of the second refrigeration circuit, so that both the closing and opening of the two ends of the first refrigeration circuit and the closing and opening of the two ends of the second refrigeration circuit can be achieved by controlling the two solenoid valves. Of course, four solenoid valves may be provided at both ends of the first refrigeration circuit and at both ends of the second refrigeration circuit, respectively, and the same function may be realized.
In order to prevent the second refrigeration circuit from being out of solution when switching to the ice making and cooling mode, the refrigeration outlet C1 may be closed first and then the refrigeration inlet C2 may be closed, in this embodiment, the refrigeration outlet C1 may be controlled to be closed for a second preset time, and the second preset time is preferably between 0.5 minutes and 1.5 minutes, preferably 1 minute, so that the second refrigeration circuit is effectively prevented from being out of solution on the premise of not affecting refrigeration.
In addition, when the cooling mode is switched to the cooling mode of the refrigerating compartment, the controller can control the one-inlet-two-outlet valve to close the ice making outlet B1 and control the two-inlet-one-outlet valve to close the ice making inlet B2, so that two ends of the second refrigerating circuit are sealed, the flow of the refrigerant in the second refrigerating circuit is limited, and the amount of the refrigerant entering the ice making circuit is reduced. Likewise, to prevent the first refrigeration circuit from being starved, the ice-making outlet B1 may be closed first and then the ice-making inlet B2 may be closed. In this embodiment, the ice making outlet B1 may be controlled to be closed for a second preset time, and then the ice making inlet B2 may be closed, where the second preset time is preferably between 0.5 minutes and 1.5 minutes, preferably 1 minute, so that the first refrigeration circuit is effectively prevented from being out of solution on the premise of not affecting refrigeration.
Specifically, in the present embodiment, the control for the first electromagnetic valve and the second electromagnetic valve is as follows:
electromagnetic valve state during chamber refrigeration: the first electromagnetic valve refrigerating outlet C1 is opened, and the ice making outlet B1 is closed; the refrigerating inlet C2 of the second electromagnetic valve is opened, and the ice making inlet B2 is closed;
state of electromagnetic valve during ice making and refrigeration: the first electromagnetic valve refrigerating outlet C1 is closed, and the ice making outlet B1 is opened; the second solenoid valve refrigeration inlet C2 is closed and the ice making inlet B2 is opened.
Firstly, judging whether ice making is started or not; if the refrigerating machine is started, further judging whether the refrigerating machine is running or not; if yes, the state of the solenoid valve needs to be adjusted, namely the state of the first solenoid valve: the refrigeration outlet C2 is closed, and the ice making outlet B2 is opened; outlet solenoid valve status: the refrigerating inlet C2 and the ice making inlet B2 are simultaneously opened, so that the refrigerating inlet C2 can be closed after 1 minute to prevent the ice making branch from being lack of liquid, and when the ice making cooling mode is switched, the fans in the ice making chamber are synchronously opened. After 5 minutes of operation, the control mode is switched to a freezing control mode, meanwhile, in order to prevent the freezing from being lack of liquid, the ice making inlet B2 is also opened for 1 minute and then closed, and then the two electromagnetic valves are cyclically switched according to 5 minutes of freezing and refrigerating and 5 minutes of ice making and refrigerating. In the process, judging whether the ice making compartment reaches the set temperature, if so, switching to refrigeration, continuing to operate, and stopping when the shutdown point is reached.
Referring to fig. 5, another embodiment of a control method for a refrigerator includes the steps of:
s1, receiving an ice making instruction;
s2', controlling a solenoid valve to limit the flow of the refrigerant in a first refrigeration loop, and controlling the solenoid valve to allow the flow of the refrigerant in a second refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode, the first refrigeration loop and the second refrigeration loop are connected in parallel with an inlet side of a compressor and an outlet side of a condenser, the first refrigeration loop is used for providing cooling capacity for a freezing chamber, and the second refrigeration loop is used for providing cooling capacity for an ice making chamber;
s3', controlling the solenoid valve to restrict the flow of the refrigerant in the second refrigeration circuit, and controlling the solenoid valve to allow the flow of the refrigerant in the first refrigeration circuit, the refrigerator operating in the ice-making and cooling mode.
By cutting off the refrigerating circuit for the freezing chamber during ice making and stopping the flow of the refrigerant in the refrigerating circuit, the amount of the refrigerant entering the ice making branch can be reduced, and by cutting off the refrigerating circuit for the ice making chamber during cooling of the compartment, the flow of the refrigerant in the ice making circuit is stopped, the amount of the refrigerant entering the refrigerating branch can be reduced, and the uncontrolled refrigerant distribution caused by the refrigerant series flow during the switching of the first refrigerating circuit and the second refrigerating circuit in the working process is prevented, so that the working reliability of the refrigerating system is improved.
Step S4, judging whether the shutdown point is reached, if not, controlling the steps S2 'and S3' to be alternately carried out in a first preset time; and (5) reaching a shutdown point, and controlling the compressor to stop.
In addition, in the embodiment, in the ice making and cooling mode, the electromagnetic valve is controlled to close the inlet of the second refrigerating circuit, and close the outlet of the second refrigerating circuit after a second preset time; in the compartment cooling mode, the electromagnetic valve is controlled to close the inlet of the first refrigerating circuit, and close the outlet of the first refrigerating circuit after the second preset time. Thereby effectively preventing the first refrigeration circuit from being out of liquid and the first refrigeration circuit from being out of liquid.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims (7)

1. The refrigerator control method is characterized by comprising a refrigerator body and a door body movably connected with the refrigerator body, wherein an ice making chamber is arranged in the door body, an ice making evaporator is arranged in the ice making chamber, the ice making evaporator is connected with a condenser through a refrigerant pipe assembly, the ice making evaporator is connected with a compressor through an ice making air return pipe assembly, the refrigerant pipe assembly and the ice making air return pipe assembly are both connected with a plate heat exchanger, and the plate heat exchanger is buried in a foaming layer of the door body; the control method comprises the following steps:
s1, receiving an ice making instruction;
s2, controlling an electromagnetic valve to limit the flow of the refrigerant in the first refrigeration loop, and controlling the electromagnetic valve to allow the flow of the refrigerant in the second refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode, and a fan in an ice making chamber is synchronously started, wherein the first refrigeration loop and the second refrigeration loop are connected in parallel with an inlet side of a compressor and an outlet side of a condenser, and the first refrigeration loop comprises a freezing evaporator for providing cold energy for a freezing chamber; the second refrigeration loop comprises the ice making evaporator and is used for providing cold energy for the ice making chamber;
s3, detecting that the temperature in the ice making chamber reaches a preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop; before the temperature detected by the ice making temperature sensor reaches the preset temperature, the controller controls the compartment cooling mode and the ice making cooling mode to be alternately performed at preset time intervals.
2. The control method of a refrigerator as claimed in claim 1, wherein: in the step S3, after the temperature detected by the ice making temperature sensor reaches the preset temperature, the solenoid valve is controlled to allow the refrigerant in the first refrigeration loop to flow, and the refrigerator is operated in a compartment cooling mode until reaching a shutdown point, and the compressor is controlled to stop.
3. The control method of a refrigerator as claimed in claim 2, wherein: in the ice making and cooling mode, the electromagnetic valve is controlled to close the inlet of the first refrigerating circuit, and after the second preset time, the outlet of the first refrigerating circuit is closed.
4. The control method of a refrigerator as claimed in claim 2, wherein: in the compartment cooling mode, the electromagnetic valve is controlled to close the inlet of the second refrigerating circuit, and after the second preset time, the outlet of the second refrigerating circuit is closed.
5. The refrigerator control method is characterized by comprising a refrigerator body and a door body movably connected with the refrigerator body, wherein an ice making chamber is arranged in the door body, an ice making evaporator is arranged in the ice making chamber, the ice making evaporator is connected with a condenser through a refrigerant pipe assembly, the ice making evaporator is connected with a compressor through an ice making air return pipe assembly, the refrigerant pipe assembly and the ice making air return pipe assembly are both connected with a plate heat exchanger, and the plate heat exchanger is buried in a foaming layer of the door body; the control method comprises the following steps:
s1, receiving an ice making instruction;
s2, controlling an electromagnetic valve to limit the flow of the refrigerant in the first refrigeration loop, and controlling the electromagnetic valve to allow the flow of the refrigerant in the second refrigeration loop, wherein the refrigerator operates in an ice making and cooling mode, and a fan in an ice making chamber is synchronously started, wherein the first refrigeration loop and the second refrigeration loop are connected in parallel with an inlet side of a compressor and an outlet side of a condenser, and the first refrigeration loop comprises a freezing evaporator for providing cold energy for a freezing chamber; the second refrigeration loop comprises the ice making evaporator and is used for providing cold energy for the ice making chamber;
s3, controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop and controlling the electromagnetic valve to allow the flow of the refrigerant in the first refrigeration loop, wherein the refrigerator operates in a compartment cooling mode; before the temperature detected by the ice making temperature sensor reaches the preset temperature, the controller controls the compartment cooling mode and the ice making cooling mode to be alternately performed at preset time intervals.
6. The control method of a refrigerator as claimed in claim 5, wherein: in the ice making and cooling mode, the electromagnetic valve is controlled to close the inlet of the first refrigerating circuit, and after the second preset time, the outlet of the first refrigerating circuit is closed.
7. The control method of a refrigerator as claimed in claim 5, wherein: in the compartment cooling mode, the electromagnetic valve is controlled to close the inlet of the second refrigerating circuit, and after the second preset time, the outlet of the second refrigerating circuit is closed.
CN202110002302.2A 2021-01-04 2021-01-04 Control method of refrigerator Active CN114719515B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006224824A (en) * 2005-02-17 2006-08-31 Denso Corp Refrigeration/cooling device
CN106196827A (en) * 2016-07-21 2016-12-07 合肥美的电冰箱有限公司 Ice making refrigerator
CN108700348A (en) * 2016-03-09 2018-10-23 Bsh家用电器有限公司 Refrigerating appliance with freezing cell compartment and refrigerant-cycle systems and the method for running refrigerating appliance
CN112097411A (en) * 2020-10-23 2020-12-18 长虹美菱股份有限公司 Double-circulation refrigerating system of variable frequency refrigerator and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006224824A (en) * 2005-02-17 2006-08-31 Denso Corp Refrigeration/cooling device
CN108700348A (en) * 2016-03-09 2018-10-23 Bsh家用电器有限公司 Refrigerating appliance with freezing cell compartment and refrigerant-cycle systems and the method for running refrigerating appliance
CN106196827A (en) * 2016-07-21 2016-12-07 合肥美的电冰箱有限公司 Ice making refrigerator
CN112097411A (en) * 2020-10-23 2020-12-18 长虹美菱股份有限公司 Double-circulation refrigerating system of variable frequency refrigerator and control method thereof

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