CN114719515A - Control method of refrigerator - Google Patents

Control method of refrigerator Download PDF

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Publication number
CN114719515A
CN114719515A CN202110002302.2A CN202110002302A CN114719515A CN 114719515 A CN114719515 A CN 114719515A CN 202110002302 A CN202110002302 A CN 202110002302A CN 114719515 A CN114719515 A CN 114719515A
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CN
China
Prior art keywords
refrigeration
refrigerant
ice
refrigerator
refrigeration loop
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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.)
Granted
Application number
CN202110002302.2A
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Chinese (zh)
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CN114719515B (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
Application granted granted Critical
Publication of CN114719515B publication Critical patent/CN114719515B/en
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    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Production, Working, Storing, Or Distribution Of Ice (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention provides a control method of a refrigerator, which 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 cold-supplying mode, 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 supplying cold energy to the freezing chamber, and the second refrigeration loop is used for supplying cold energy to the ice-making chamber; and S3, detecting that the temperature in the ice making chamber reaches the preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop. The refrigeration circuit for the freezing chamber is cut off during ice making, and the flow of the refrigerant in the refrigeration circuit is stopped, so that the amount of the refrigerant entering the ice making branch circuit can be reduced, the refrigerant distribution uncontrollable caused by series flow of the refrigerant during the switching of the refrigeration circuit in the working process is prevented, and the working reliability of the refrigeration 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 needs to be carried out below 0 degree, and the ice maker needs to be placed in a freezing chamber, so that a user needs to open a door of the freezing chamber to take out ice blocks when taking out the ice.
In order to facilitate the use of users, in many refrigerators, an ice maker is disposed on a refrigerating chamber door of the refrigerator, and a dispenser is disposed outside the refrigerating chamber door to take ice through the dispenser. Generally, cold air in a refrigeration evaporator or a freezing chamber is utilized, namely an ice making chamber and a refrigerating chamber or a freezing chamber share an evaporator, and then the cold air is supplied to the ice maker in a fan air supply mode so that the ice maker makes water into ice blocks. Because the ice maker is usually arranged at the upper part of the refrigeration door, a longer air guide pipe is needed 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 the long transmission path, and meanwhile, the air guide pipe is needed to be arranged on a refrigeration heat-insulating layer with thinned refrigeration side walls, so that the condensation problem is easy to occur; secondly, the ice making chamber is influenced by a refrigerating chamber or a freezing chamber, the temperature cannot be controlled independently, the refrigerating capacity of the freezing chamber is insufficient during ice making and refrigeration, and the temperature rises quickly. In addition, due to the circulation of cold air, the phenomenon of taint of odor can be avoided in ice making, and the independent control of ice making is inconvenient.
In order to prevent odor tainting, an independent refrigerating system or an independent evaporator can be adopted to supply cold for the ice making chambers, if the same refrigerating system is adopted to supply cold for the respective chambers through different evaporators, refrigerant streaming can occur in the working process due to different cold quantities required by different chambers, so that the refrigerant distribution is not controlled, the refrigerating system is damaged, or the cold quantity supply is not matched with the cold quantity requirement of the respective chambers, and 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 work of a refrigerating system.
The invention provides a refrigerator, which 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 cold-supplying mode, 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 supplying cold energy to the freezing chamber, and the second refrigeration loop is used for supplying cold energy to the ice-making chamber;
and S3, detecting that the temperature in the ice making chamber reaches the 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 solenoid valve is controlled to allow the refrigerant in the first refrigeration circuit to flow, and the refrigerator is operated in the compartment cooling mode until reaching a shutdown point, and the compressor is controlled to be stopped.
As a further improvement of an embodiment of the present invention, before the temperature of the ice making chamber is detected to reach the preset temperature, the refrigerator is controlled to alternately perform the ice making and cooling mode and the compartment cooling mode for a first preset time.
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 second refrigeration circuit first, and close the outlet of the second refrigeration circuit after a second preset time.
As a further improvement of an embodiment of the present invention, in the ice making and cooling mode, the fan in the ice making chamber is controlled to be synchronously turned on.
As a further improvement of one embodiment of the present invention, in the compartment cooling mode, the solenoid valve is controlled to close the inlet of the first refrigeration circuit first, and close the outlet of the first 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 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 cold-supplying mode, 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 supplying cold energy to the freezing chamber, and the second refrigeration loop is used for supplying cold energy to the ice-making chamber;
s3, controlling the solenoid valve to restrict the flow of refrigerant in the second refrigeration circuit and controlling the solenoid valve to allow the flow of refrigerant in the first refrigeration circuit, the refrigerator operating in an ice making and cooling mode.
As a further improvement of an embodiment of the present invention, the above steps S2 and S3 are alternately performed for a first preset time until a shutdown point is reached, and the compressor is controlled to be stopped.
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 second refrigeration circuit first, and close the outlet of the second refrigeration circuit after a second preset time.
As a further improvement of the embodiment of the present invention, in the compartment 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 a second preset time.
Compared with the prior art, the refrigerator provided by the invention has the advantages that the independent refrigerating circuit is adopted for ice making, the influence of the refrigerating capacity required by the refrigerating chamber is avoided, the refrigerating capacity requirement of the ice making chamber can be independently controlled, two ends of the refrigerating circuit are sealed during ice making and refrigerating, the flow of the internal refrigerant is stopped, the amount of the refrigerant entering the ice making circuit is reduced, the series flow of the refrigerant is avoided during the switching of the refrigerating circuit, and the use of a refrigerating system is more reliable.
Drawings
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Fig. 1 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present invention.
Fig. 2 is a system block diagram of a refrigeration system of the refrigerator in fig. 1.
Fig. 3 is a schematic diagram of a configuration 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 flowchart 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 present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
It will be understood that terms such as "upper," "lower," "outer," "inner," and the like, used herein to denote relative spatial positions, 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 spatially relative positional terms 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 refrigerator body 10, a door body 20 movably connected to the refrigerator body, and a refrigeration system, the refrigerator body 10 defines a refrigeration compartment, the refrigeration compartment includes a refrigerating compartment 11 and a freezing compartment 12, the refrigerating compartment 11 and the freezing compartment 12 are arranged from top to bottom, the door body 20 is used for opening and closing the refrigerating compartment 11, the refrigerating compartment 11 or the door body 20 is provided with an ice making compartment 21, an ice maker (not shown) is arranged in the ice making compartment 21, the door body 20 is provided with a dispenser (not shown) selectively communicated with the ice making compartment 21, 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, but may include more compartments, such as a temperature changing compartment.
The refrigeration 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, the refrigeration system further comprises a first refrigeration loop and a second refrigeration loop which are connected in parallel to the inlet side of the compressor and the outlet side of the condenser, the first refrigeration loop is used for providing cold for the freezing chamber, and the second refrigeration loop is used for providing cold for the ice making chamber. The first refrigeration circuit is not limited to providing cooling energy to the freezer compartment, but may include compartments other than the ice-making compartment, such as a refrigerator 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 tube 313 and a freezing evaporator 312 connected to an outlet side of the freezing capillary tube 313, wherein the freezing capillary tube 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, and 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 compartment 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 entering the condenser for cooling from the compressor 31, the refrigerant may selectively enter the freezing capillary tube 313 and the ice making capillary tube 323, and the refrigerant returns to the compressor 31 after reaching the freezing evaporator 312 through the freezing capillary tube 313, and the refrigerant reaches the ice making evaporator 322 through the ice making capillary tube 323, and then returns to the compressor 31. Accordingly, the cooling processes of the freezing chamber 12 and the ice making chamber 21 may be independently controlled.
When the refrigerant in the first refrigeration circuit flows, the compartment cooling mode can be realized, and when the refrigerant in the second refrigeration circuit flows, the ice-making cooling mode can be realized. Because the pressures of the ice-making evaporator 322 and the freezing evaporator 312 are different, the ice-making circuit needs less refrigerant, and in order to prevent the refrigerant from streaming when the refrigeration circuits are switched in the working process, and cause uncontrolled refrigerant distribution, the refrigerant in the first refrigeration circuit can be allowed to flow in the compartment cooling mode, and the refrigerant in the second refrigeration circuit can be allowed to flow and the refrigerant in the first refrigeration circuit can be limited in the ice-making cooling mode. In the compartment cooling mode, whether or not to restrict the flow of the refrigerant in the second refrigeration circuit may be selected depending on the situation.
Specifically, the outlet side of the condenser is connected with a first electromagnetic valve 35, the inlet side of the compressor 31 is connected with a second electromagnetic valve 36, the refrigerator further comprises a controller connected with 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 with 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 with the second electromagnetic valve 36, and the controller allows and limits 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, electromagnetic valves are provided on 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 electromagnetic valves during ice making and refrigeration, so that the flow of the refrigerant inside the freezing circuit is stopped, thereby reducing the amount of the refrigerant entering the ice making circuit.
In this embodiment, the number of the first solenoid valve 35 and the second solenoid valve 36 is one, which facilitates the configuration of the refrigeration system, specifically, the first solenoid valve 35 is configured as a one-inlet two-outlet 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 that includes two inlets, ice making inlet B2 and refrigeration inlet C2, and one outlet a 2. In the ice-making and cold-supplying mode, the controller can control the one-in two-out valve to close the refrigerating outlet C1 and control the two-in one-out valve to close the refrigerating inlet C2, so that two ends of the first refrigerating circuit are sealed, and the flow of the refrigerant in the first refrigerating circuit 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 closed for a preset time, and then the refrigeration inlet C2 is closed, where the preset time is preferably 0.5 minute to 1.5 minutes, and is preferably 1 minute, so as to effectively prevent the second refrigeration circuit from being starved without affecting refrigeration.
In addition, in the compartment cooling mode, the controller can control the one-inlet and two-outlet valve to close the ice-making outlet B1, and control the two-inlet and one-outlet valve to close the ice-making inlet B2, so that two ends of the second refrigeration circuit are sealed, and the flow of the refrigerant in the second refrigeration circuit is limited. Likewise, to prevent starvation of the first refrigeration circuit, ice making outlet B1 may be closed before ice making inlet B2. In this embodiment, the ice making outlet B1 may be controlled to be closed for a preset time, and then the ice making inlet B2 may be closed, where the preset time is preferably 0.5 minute to 1.5 minutes, and is preferably 1 minute, so that the first refrigeration circuit is effectively prevented from being starved of liquid on the premise of not affecting refrigeration.
The independent refrigerating circuit is arranged to independently supply cold to the ice making chamber 21, so that no cold air circulation exists between the ice making chamber 21 and the refrigerating chamber, and ice blocks made in the ice making chamber 21 have high glittering degree and are free from tainting of odor. The independent refrigeration loop is not affected by the cold energy required by the refrigeration compartment, and can independently control the cold energy requirement of the ice making compartment 21.
In this embodiment, the freezing evaporator 312 may be provided at the rear of the freezing chamber 12 to supply cold to the refrigerating chamber 11 and the freezing chamber 12. Two evaporators, namely a freezing evaporator and a refrigerating evaporator, can also be arranged at the rear parts of the freezing chamber and the refrigerating chamber respectively, and the two evaporators can be arranged in series along the refrigerating loop or in parallel. The refrigerating system further comprises a dew removing pipe 34 connected between the condenser and the first electromagnetic valve 35, the condenser comprises two back condensers 32 and side plate condensers 33 which are connected in series, and the two condensers are arranged at different positions of the refrigerator, so that the heat dissipation effect is improved. In the first refrigeration circuit, the first accumulator 315 is connected to the outlet side of the freezing evaporator 312, so that it is possible to prevent the compressor 31 from being damaged by liquid impact due to excessive refrigerant.
In this embodiment, a direction in which the refrigerating chamber 11 and the freezing chamber 12 are arranged from top to bottom is defined as a height direction of the refrigerator, a direction in which a user opens the refrigerator to face and back to the refrigerator door is defined as a front-back direction of the refrigerator, and a direction perpendicular to the height direction and the front-back direction is defined as a width direction of the refrigerator. In the refrigeration system, the connection between the two parts may be direct or indirect.
Further, the ice making chamber 21 is disposed on the door 20, the condenser is connected to the ice making evaporator through a refrigerant pipe assembly, the ice making evaporator 322 is connected to the compressor 31 through an ice making air return pipe assembly, both the refrigerant pipe assembly and the ice making air return pipe assembly are connected to the plate heat exchanger 324, and the plate heat exchanger 324 is embedded in the foaming layer of the door 20. The ice making chamber 21 is arranged in the door body 20, and the ice making evaporator 322 is arranged in the ice making chamber 21, so that a complex air duct is not required to be arranged for supplying air to the ice making chamber 21, the loss of cold energy generated by cold air conveying 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 underground in the foaming layer of the door body, and refrigerant pipe subassembly and ice-making muffler subassembly can carry out the heat transfer in the plate heat exchanger 324 of the internal door body, promote the heat transfer effect of the two, like this, the ice-making muffler subassembly part after the heat transfer can not produce the risk of condensation even if expose in the environment.
With continued reference to fig. 1, the refrigerant tube assembly includes a first flexible tube 41, and the ice-making air return tube assembly includes a second flexible tube 42, which may be a flexible tube made of PTEF or rubber, and both ends of the flexible tube may be connected to metal tubes. The door body 20 is rotatably connected to the refrigerator 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 both provided in the upper hinge case 61. By arranging the first flexible pipe 41 and the second flexible pipe 42 in the upper hinge box 61, the door body can be flexibly deformed when being opened and closed, and the whole refrigerant conveying is not influenced, that is, the distribution of the refrigerant pipe assembly and the ice-making air return pipe assembly does not influence 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, so that the appearance is not influenced.
In addition, in the second refrigeration circuit, the outlet side of the ice-making evaporator 322 is connected with the second accumulator 325, when the ice-making circuit is used for refrigerating alone, the refrigerant in the ice-making evaporator is excessive, and in order to avoid liquid refrigerant impact and incapability of directly entering the compressor 31, the refrigerant needs to enter the second accumulator 325 first and then enter the compressor 31. In addition, a fan 43 may be provided above the ice making evaporator 322, or a fan may be provided in another region of the ice making chamber to circulate cold air in the ice making chamber 21 to accelerate the making of ice.
In this embodiment, the ice maker includes an ice tray for holding ice making water, the ice making evaporator 322 includes a refrigerant pipe directly contacting and exchanging heat with the bottom of the ice tray, 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 provided with an ice storage box which is positioned below the ice making machine, the ice tray is connected with a metal plate 45, the metal plate 45 is directly contacted with the refrigerant pipe and fixes the refrigerant pipe at the bottom of the ice tray, the fan 43 can drive the air flow to circulate between the metal plate and the ice storage box, the metal plate 45 is arranged to increase the area of the evaporator, and meanwhile, the refrigerant pipe is convenient to fix.
Further, the compressor 31 is disposed in a pressing chamber at the bottom of the box body, an evaporating dish (not shown) is disposed in the pressing chamber, a water draining structure 71 is disposed at the bottom of the ice making evaporator 322, a water draining pipe 72 is communicated between the water draining structure 71 and the evaporating dish, a lower hinge box 62 for accommodating a hinge is disposed at the bottom of the refrigerating chamber, and the water draining pipe 72 penetrates through the lower hinge box 62. The drainage structure 71 is arranged at the bottom of the ice making evaporator 322, so that the defrosting water on the ice making evaporator 322 can be conveniently discharged, and the defrosting water is directly introduced into the evaporation pan of the press bin and can be gathered with the defrosting water of other evaporators to be evaporated, so that the overall structure of the refrigerator is simplified.
In order to enable the refrigerating system to refrigerate efficiently, particularly avoid overhigh temperature of a freezing chamber during ice making and refrigerating, an ice making chamber temperature sensor connected with a controller is arranged in the ice making chamber, and the controller controls a chamber cooling mode and an ice making cooling mode to be alternately carried out at preset time intervals before the temperature detected by the ice making chamber temperature sensor reaches a preset temperature; the controller controls the compartment cooling mode to be performed and restricts the flow of the refrigerant in the second refrigeration circuit when the temperature detected by the ice making compartment temperature sensor reaches a preset temperature. In the compartment cooling mode, the refrigeration system may stop operating when the shutdown point is reached.
The specific embodiment of the invention also relates to a refrigeration system of the refrigerator, and the composition and the function of the refrigeration system are as described above, and are not described again 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 the electromagnetic valve to limit the flow of the refrigerant in the first refrigeration loop and allow the flow of the refrigerant in the second refrigeration loop, wherein the refrigerator operates in an ice-making and cold-supplying mode, 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 supplying cold energy to the freezing chamber, and the second refrigeration loop is used for supplying cold energy to the ice-making chamber;
and S3, detecting that the temperature in the ice making chamber reaches the preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop.
The refrigeration circuit for the freezing chamber is cut off during ice making, and the flow of the refrigerant in the refrigeration circuit is stopped, so that the amount of the refrigerant entering the ice making branch circuit can be reduced, the refrigerant distribution uncontrollable caused by series flow of the refrigerant during the switching of the refrigeration circuit in the working process is prevented, and the working reliability of the refrigeration system is improved.
The received ice making instruction can indicate 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 the user makes a reservation to take the ice cubes, 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 the ice cubes from melting, and the like.
In addition, the flow of the refrigerant in the first refrigeration circuit is limited, and the flow of the refrigerant in the second refrigeration circuit is allowed, namely the refrigeration system operates in an ice making and cold supplying mode, and a fan in an ice making chamber can be controlled to be synchronously started to accelerate cooling in the ice making and cold supplying mode. Similarly, the refrigerant in the first refrigeration circuit is allowed to flow, i.e. the compartment cooling mode, at this time, whether the refrigerant flow in the second refrigeration circuit needs to be cut off or not can be selected, and if ice making and cooling compartment cooling need to be performed simultaneously, the refrigerant flow in the two refrigeration circuits can be allowed.
Further, before the temperature in the ice making chamber reaches the preset temperature, in order to avoid the situation that the temperature rise in the refrigeration chamber is too high due to the fact that the first refrigeration circuit is cut off, the control method further comprises the step of switching to the refrigeration chamber cooling mode after the ice making cooling mode runs for the first preset time, namely controlling the electromagnetic valve to allow the refrigerant in the first refrigeration circuit to flow. Preferably, the ice making and cooling mode and the cooling compartment cooling mode are operated for the same first preset time in turn, and can also be operated for different preset times in turn until the temperature in the ice making compartment is detected to reach the preset temperature. The preset time is preferably 3 minutes to 10 minutes, and in the embodiment, is preferably 4 to 6 minutes, so as to achieve better refrigeration effect.
The specific operation of the control 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 refrigerant entering the first refrigeration circuit and the refrigeration inlet C2 of the second solenoid valve 36 of the refrigerant exiting the first refrigeration circuit; the specific operation of controlling the solenoid valves 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 where the refrigerant enters the second refrigeration circuit and the ice making inlet B2 of the second solenoid valve 36 where the refrigerant exits the second refrigeration circuit, so that both the closing and opening of the two ends of the first refrigeration circuit can be realized by controlling the two solenoid valves, and also the closing and opening of the two ends of the second refrigeration circuit can be realized. Of course, four electromagnetic valves may be provided, which are respectively provided at both ends of the first refrigeration circuit and both ends of the second refrigeration circuit, and the same function may be achieved.
In order to prevent the second refrigeration circuit from being starved when the ice-making and cold-supplying mode is switched, the refrigeration outlet C1 may be closed first, and then the refrigeration inlet C2 is closed, in this embodiment, the refrigeration outlet C1 may be closed for a second preset time, and then the refrigeration inlet C2 may be closed, where the second preset time is preferably 0.5 minutes to 1.5 minutes, and is preferably 1 minute, and the second refrigeration circuit is effectively prevented from being starved on the premise that refrigeration is not affected.
In addition, when the refrigeration compartment is switched to the refrigeration compartment cooling mode, the controller can control the one-inlet and two-outlet valve to close the ice making outlet B1, and control the two-inlet and one-outlet valve to close the ice making inlet B2, so that two ends of the second refrigeration circuit are sealed, the flow of the refrigerant in the second refrigeration circuit is limited, and the amount of the refrigerant entering the ice making circuit is reduced. Likewise, to prevent starvation of the first refrigeration circuit, ice making outlet B1 may be closed before ice making inlet B2. In this embodiment, the ice making outlet B1 may be controlled to be closed for a second preset time before the ice making inlet B2 is closed, where the second preset time is preferably 0.5 minute to 1.5 minutes, and is preferably 1 minute, so that the first refrigeration circuit is effectively prevented from being out of liquid without affecting refrigeration.
Specifically, in the present embodiment, the control of the first electromagnetic valve and the second electromagnetic valve is as follows:
electromagnetic valve state during compartment refrigeration: the first electromagnetic valve refrigeration outlet C1 is opened, and the ice making outlet B1 is closed; the refrigeration inlet C2 of the second electromagnetic valve is opened, and the ice-making inlet B2 is closed;
electromagnetic valve state during ice making and refrigeration: the first electromagnetic valve refrigeration outlet C1 is closed, and the ice making outlet B1 is opened; the second solenoid valve cooling inlet C2 is closed and the ice making inlet B2 is opened.
At the beginning, whether ice making is started or not needs to be judged firstly; if the refrigerator is started, further judging whether the refrigeration is in operation; if yes, the state of the electromagnetic valve needs to be adjusted, namely the state of the first electromagnetic valve: the refrigerating outlet C2 is closed, and the ice making outlet B2 is opened; outlet solenoid valve state: refrigeration import C2, ice-making import B2 are opened simultaneously, for preventing the scarce liquid of ice-making branch road, can close refrigeration import C2 after 1 minute, and when switching to ice-making cooling mode, the fan in the ice-making room is opened in step. After 5 minutes of operation, the operation mode is switched to a freezing control mode, meanwhile, in order to prevent freezing liquid shortage, the ice making inlet B2 is opened for 1 minute and then closed, and then two electromagnetic valves are circularly switched according to 5 minutes of freezing refrigeration and 5 minutes of ice making refrigeration. In the process, whether the ice making chamber reaches the set temperature is judged, if yes, the ice making chamber is switched to freezing and continuously operated, and the ice making chamber is stopped when the ice making chamber reaches a shutdown point.
Referring to fig. 5, a control method for a refrigerator according to another embodiment includes the steps of:
s1, receiving an ice making instruction;
s2', controlling the 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 runs in an ice-making and cold-supplying mode, 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 cold energy for the freezing chamber, and the second refrigeration loop is used for providing cold energy for the ice-making chamber;
s3', the solenoid valve is controlled to restrict the flow of refrigerant in the second refrigeration circuit, and the solenoid valve is controlled to allow the flow of refrigerant in the first refrigeration circuit, and the refrigerator is operated in the ice making and cooling mode.
The refrigerating circuit for the freezing chamber is cut off during ice making, the flow of the refrigerant in the refrigerating circuit is stopped, the amount of the refrigerant entering the ice making branch can be reduced, the refrigerating circuit for the ice making chamber is cut off during cold supply 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, the refrigerant distribution uncontrollable caused by series flow of the refrigerant when the first refrigerating circuit and the second refrigerating circuit are switched in the working process is prevented, and therefore the working reliability of the refrigerating system is improved.
Further comprising a step S4 of judging whether a shutdown point is reached, if not, controlling the steps S2 'and S3' to be alternately carried out in a first preset time; and when the shutdown point is reached, the compressor is controlled to stop.
In addition, in the embodiment, in the ice-making and cold-supplying mode, the electromagnetic valve is controlled to close the inlet of the second refrigeration loop firstly, and close the outlet of the second refrigeration loop after the second preset time; in the compartment cold supply mode, the electromagnetic valve is controlled to close the inlet of the first refrigeration loop firstly, and the outlet of the first refrigeration loop is closed after the second preset time. Thereby effectively preventing the first refrigeration loop from being lack of liquid and the first refrigeration loop from being lack of liquid.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A control method of a refrigerator is characterized by comprising 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 cold-supplying mode, 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 supplying cold energy to the freezing chamber, and the second refrigeration loop is used for supplying cold energy to the ice-making chamber;
and S3, detecting that the temperature in the ice making chamber reaches the preset temperature, and controlling the electromagnetic valve to limit the flow of the refrigerant in the second refrigeration loop.
2. The control method of a refrigerator as claimed in claim 1, wherein: in the step S3, the solenoid valve is controlled to allow the refrigerant in the first refrigeration circuit to flow, and the refrigerator is operated in the compartment cooling mode until a shutdown point is reached, and the compressor is controlled to be stopped.
3. The control method of a refrigerator as claimed in claim 2, wherein: and controlling the refrigerator to alternately perform an ice making and cooling mode and a compartment cooling mode within a first preset time before detecting that the temperature of the ice making chamber reaches a preset temperature.
4. The control method of a refrigerator as claimed in claim 2, wherein: in the ice-making and cold-supplying mode, the electromagnetic valve is controlled to close the inlet of the second refrigeration loop firstly, and close the outlet of the second refrigeration loop after a second preset time.
5. The control method of a refrigerator as claimed in claim 4, wherein: and in the ice making and cold supplying mode, controlling the fans in the ice making chamber to be synchronously started.
6. The control method of a refrigerator as claimed in claim 2, wherein: in the compartment cold supply mode, the electromagnetic valve is controlled to close the inlet of the first refrigeration loop firstly, and close the outlet of the first refrigeration loop after the second preset time.
7. A control method of a refrigerator is characterized by comprising 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 cold-supplying mode, 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 supplying cold energy to the freezing chamber, and the second refrigeration loop is used for supplying cold energy to the ice-making chamber;
s3, controlling the solenoid valve to restrict the flow of refrigerant in the second refrigeration circuit and controlling the solenoid valve to allow the flow of refrigerant in the first refrigeration circuit, the refrigerator operating in an ice making and cooling mode.
8. The control method of a refrigerator as claimed in claim 7, wherein: the steps S2 and S3 are alternately performed for a first preset time until a shutdown point is reached, and the compressor is controlled to be stopped.
9. The control method of a refrigerator as claimed in claim 7, wherein: in the ice-making and cold-supplying mode, the electromagnetic valve is controlled to close the inlet of the second refrigeration loop firstly, and close the outlet of the second refrigeration loop after a second preset time.
10. The control method of a refrigerator as claimed in claim 7, wherein: in the compartment cold supply mode, the electromagnetic valve is controlled to close the inlet of the first refrigeration loop firstly, and close the outlet of the first refrigeration loop after the second preset time.
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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