CN114719511A - Refrigerator and refrigerating system thereof - Google Patents
Refrigerator and refrigerating system thereof Download PDFInfo
- Publication number
- CN114719511A CN114719511A CN202110002157.8A CN202110002157A CN114719511A CN 114719511 A CN114719511 A CN 114719511A CN 202110002157 A CN202110002157 A CN 202110002157A CN 114719511 A CN114719511 A CN 114719511A
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- Prior art keywords
- ice making
- refrigeration
- refrigerating
- ice
- chamber
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- 238000005057 refrigeration Methods 0.000 claims abstract description 181
- 239000003507 refrigerant Substances 0.000 claims abstract description 102
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 230000008014 freezing Effects 0.000 claims abstract description 48
- 238000007710 freezing Methods 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 235000003642 hunger Nutrition 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000037351 starvation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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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
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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
- 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
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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
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
Abstract
The invention provides a refrigerator and a refrigerating system thereof, wherein the refrigerator comprises a refrigerator body, a refrigerating chamber and a refrigerating chamber, wherein the refrigerator body is limited with the refrigerating chamber and the freezing chamber; the door body is movably connected to the box body and is used for opening and closing the refrigerating chamber; the ice making chamber is arranged in the refrigerating chamber or the door body, and an ice maker is arranged in the ice making chamber; a refrigeration system including a compressor and a condenser connected to an outlet side of the compressor; the refrigerating system also comprises a first refrigerating loop and a second refrigerating loop which are connected in parallel with the inlet side of the compressor and the outlet side of the condenser, wherein the first refrigerating loop is used for providing cold energy for the freezing chamber, and the second refrigerating loop is used for providing cold energy for the ice making chamber; the refrigerator comprises a compartment cooling mode and an ice-making cooling mode, wherein the compartment cooling mode allows the refrigerant in the first refrigeration circuit to flow; an ice-making and cooling mode to restrict refrigerant flow in the first refrigeration circuit and to allow refrigerant flow in the second refrigeration circuit.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigerator with an ice maker and a refrigeration system thereof.
Background
The existing refrigerator capable of realizing ice making needs to be placed in a freezing chamber because the ice making needs to be carried out below 0 ℃, 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 arranged on a refrigerating chamber door body of the refrigerator, a dispenser is arranged outside the refrigerating chamber door body, and ice is taken 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 the refrigerating chamber or the freezing chamber, the temperature cannot be controlled independently, the cold quantity of the refrigerating 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, for example, the same refrigerating system is adopted to supply cold for the respective chambers through different evaporators, and due to different cold quantities required by different chambers, refrigerant streaming can occur in the working process, 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 requirements of the respective chambers, and therefore, the prior art needs to be improved.
Disclosure of Invention
The invention aims to provide a refrigerator which can realize independent control of ice making and has more reliable operation of a refrigerating system.
The present invention provides a refrigerator, comprising:
a case defining a refrigerating chamber and a freezing chamber;
the door body is movably connected to the box body and is used for opening and closing the refrigerating chamber;
the ice making chamber is arranged in the refrigerating chamber or the door body, and an ice maker is arranged in the ice making chamber;
a refrigeration system including a compressor and a condenser connected to an outlet side of the compressor;
the refrigerating system also comprises a first refrigerating loop and a second refrigerating loop which are connected in parallel with the inlet side of the compressor and the outlet side of the condenser, wherein the first refrigerating loop is used for providing cold energy for the freezing chamber, and the second refrigerating loop is used for providing cold energy for the ice making chamber; the refrigerator comprises a compartment cooling mode and an ice-making cooling mode, wherein the compartment cooling mode allows the refrigerant in the first refrigeration circuit to flow; an ice-making and cooling mode restricting refrigerant flow in the first refrigeration circuit and allowing refrigerant flow in the second refrigeration circuit.
As a further improvement of an embodiment of the present invention, the outlet side of the condenser is connected to a first solenoid valve, the inlet side of the compressor is connected to a second solenoid valve, the refrigerator further comprises a controller connecting the first solenoid valve and the second solenoid valve, the inlet side of the first refrigeration circuit and the inlet side of the second refrigeration circuit are both connected to the first solenoid valve, the outlet side of the first refrigeration circuit and the outlet side of the second refrigeration circuit are both connected to the second solenoid valve, 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 solenoid valve and the second solenoid valve.
As a further improvement of an embodiment of the present invention, the first solenoid valve is configured as a one-in two-out valve including an ice making outlet and a cooling outlet; the second electromagnetic valve is constructed as a two-in one-out valve and comprises an ice making inlet and a refrigerating inlet; in the ice making chamber cooling mode, the controller closes the refrigeration outlet first and then closes the refrigeration inlet.
As a further improvement of an embodiment of the present invention, the first solenoid valve is configured as a one-in two-out valve including an ice making outlet and a cooling outlet; the second electromagnetic valve is constructed as a two-in one-out valve and comprises an ice making inlet and a refrigerating inlet; in the refrigeration compartment cold supply mode, the flow of the refrigerant in the second refrigeration loop is limited, and the controller closes the ice making outlet and then closes the ice making inlet.
As a further improvement of an embodiment of the present invention, the second refrigeration circuit includes an ice making evaporator, the ice making chamber is disposed on the door body, the condenser is connected to the ice making evaporator through a refrigerant pipe assembly, the ice making evaporator is connected to the compressor through an ice making air return pipe assembly, both the refrigerant pipe assembly and the ice making air return pipe assembly are connected to a plate heat exchanger, and the plate heat exchanger is embedded in a foaming layer of the door body.
As a further improvement of an embodiment of the present invention, the ice maker includes an ice tray for containing ice making water, the ice making evaporator includes a refrigerant pipe for heat exchange in direct contact with a bottom of the ice tray, an outlet side of the refrigerant pipe is connected to the plate heat exchanger, and a reservoir is connected between the outlet side of the refrigerant pipe and the plate heat exchanger.
As a further improvement of an embodiment of the present invention, an ice bank is further disposed in the ice making chamber, the ice bank is located below the ice making machine, the ice tray is connected to a metal plate, the metal plate is in direct contact with the refrigerant pipe and fixes the refrigerant pipe to the bottom of the ice tray, and a fan is further disposed in the ice making chamber, and the fan drives an air flow to circulate between the metal plate and the ice bank.
As a further improvement of an embodiment of the present invention, an ice making chamber temperature sensor connected to the controller is disposed in the ice making chamber, and the controller controls the chamber cooling mode and the ice making cooling mode to be alternately performed at a preset time interval before the temperature detected by the ice making chamber temperature sensor reaches a preset temperature.
As a further improvement of an embodiment of the present invention, an ice making compartment temperature sensor connected to the controller is provided in the ice making compartment, and when the temperature detected by the ice making compartment temperature sensor reaches a preset temperature, the controller controls the compartment cooling mode and restricts the flow of the refrigerant in the second refrigeration circuit.
The invention also relates to a refrigerating system for the refrigerator, which comprises a compressor, a condenser connected to the outlet side of the compressor, a first refrigerating circuit and a second refrigerating circuit, wherein the first refrigerating circuit and the second refrigerating circuit are connected to the inlet side of the compressor and the outlet side of the condenser in parallel; the refrigeration system comprises a compartment cooling mode and an ice-making cooling mode, wherein the compartment cooling mode allows the refrigerant in the first refrigeration loop to flow; an ice-making and cooling mode to restrict refrigerant flow in the first refrigeration circuit and to allow refrigerant flow in the second refrigeration circuit.
As a further improvement of the embodiment of the present invention, the refrigeration system further includes a first solenoid valve connected to an outlet side of the condenser and a second solenoid valve connected to an inlet side of the compressor, an inlet side of the first refrigeration circuit and an inlet side of the second refrigeration circuit are both connected to the first solenoid valve, an outlet side of the first refrigeration circuit and an outlet side of the second refrigeration circuit are both connected to the second solenoid valve, and the first solenoid valve and the second solenoid valve are operable to allow and restrict a flow of the refrigerant in the first refrigeration circuit and/or the second refrigeration circuit.
As a further improvement of an embodiment of the present invention, the first electromagnetic valve is configured as a one-in two-out valve including an ice making outlet and a refrigerating outlet; the second electromagnetic valve is constructed as a two-in one-out valve and comprises an ice making inlet and a refrigerating inlet; in the ice making chamber cooling mode, the refrigeration inlet is closed later than the refrigeration outlet; in the refrigeration compartment cooling mode, the flow of refrigerant in the second refrigeration circuit is restricted, and the ice making inlet is closed later than the ice making outlet.
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 flowchart 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 and 2, the refrigerator includes a refrigerator body 10, a door 20 movably connected to the refrigerator body, and a refrigeration system, where the refrigerator body 10 defines a refrigeration compartment, the refrigeration compartment includes a refrigerating chamber 11 and a freezing chamber 12, the refrigerating chamber 11 and the freezing chamber 12 are arranged from top to bottom, the door 20 is used to open and close the refrigerating chamber 11, the refrigerating chamber 11 or the door 20 is provided with an ice making chamber 21, an ice maker (not shown) is arranged in the ice making chamber 21, the door 20 is provided with a dispenser (not shown) capable of selectively communicating with the ice making chamber 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 pressure of the ice-making evaporator 322 is different from that of the freezing evaporator 312, the ice-making circuit needs less refrigerant, and in order to prevent refrigerant streaming when the refrigeration circuits are switched during operation, and thus, the refrigerant distribution is not controlled, 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 addition, whether or not to restrict the flow of the refrigerant in the second refrigeration circuit may be selected in the compartment cooling mode depending on the case.
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 refrigeration outlet C1 and control the two-in one-out valve to close the refrigeration inlet C2, so that two ends of the first refrigeration circuit are sealed, and the flow of the refrigerant in the first refrigeration 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 is closed, in this embodiment, the refrigeration outlet C1 may be controlled to 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 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-in two-out valve to close the ice making outlet B1 and control the two-in one-out 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, and it is possible to prevent the compressor 31 from being damaged by liquid hammering 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 two 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 or 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 refrigerator 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 for evaporation, 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 a 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.
The refrigerator provided in the above embodiment also 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 controlling the electromagnetic valve to allow the flow of the refrigerant in the second refrigeration loop, wherein 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;
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 loop for the freezing chamber is cut off during ice making, and the flow of the refrigerant in the refrigeration loop is stopped, so that the amount of the refrigerant entering the ice making branch can be reduced, the refrigerant is prevented from being distributed uncontrollably due to series flow of the refrigerant during the switching of the refrigeration loop in the working process, and the working reliability of the refrigeration system is improved.
The received ice making indication 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 makes an appointment 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 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 preset time, namely controlling the electromagnetic valve to allow the refrigerant in the first refrigeration circuit to flow. Preferably, the ice making and cold supplying mode and the refrigerating compartment cold supplying mode are operated for the same preset time in turn, and can 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 refrigerant outlet C1 and the refrigerant inlet C2 of the refrigerant into and out of the first refrigeration circuit; the specific operation of controlling the electromagnetic valves to cut off the flow of the refrigerant in the second refrigeration circuit can be to close the ice making outlet B1 of the refrigerant entering the second refrigeration circuit and close the ice making inlet B2 of the refrigerant exiting the second refrigeration circuit, that is, 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 realized by controlling the two electromagnetic valves. 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 controlled to be closed for a preset time, and then the refrigeration inlet C2 may be closed, where the preset time is preferably 0.5 minute 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 inlet B2 may be closed after the ice making outlet B1 is closed for a preset time, where the preset time is preferably 0.5 minute to 1.5 minutes, and is preferably 1 minute, so as to effectively prevent the first refrigeration circuit from being starved of liquid on the premise of not 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: the refrigeration inlet C2 and the ice making inlet B2 are opened simultaneously, in order to prevent the ice making branch from being lack of liquid, the refrigeration inlet C2 can be closed after 1 minute, and when the ice making and cold supplying modes are switched, the fans in the ice making chambers are synchronously started. 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.
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 (12)
1. A refrigerator, comprising:
a cabinet defining a refrigerating compartment and a freezing compartment;
the door body is movably connected to the box body and is used for opening and closing the refrigerating chamber;
the ice making chamber is arranged in the refrigerating chamber or the door body, and an ice maker is arranged in the ice making chamber;
a refrigeration system including a compressor and a condenser connected to an outlet side of the compressor;
the refrigerating system is characterized by further comprising a first refrigerating loop and a second refrigerating loop which are connected in parallel with the inlet side of the compressor and the outlet side of the condenser, wherein the first refrigerating loop is used for providing cold energy for the freezing chamber, and the second refrigerating loop is used for providing cold energy for the ice making chamber; the refrigerator comprises a compartment cooling mode and an ice-making cooling mode, wherein the compartment cooling mode allows the refrigerant in the first refrigeration circuit to flow; an ice-making and cooling mode restricting refrigerant flow in the first refrigeration circuit and allowing refrigerant flow in the second refrigeration circuit.
2. The refrigerator of claim 1, wherein: the outlet side of the condenser is connected with a first electromagnetic valve, the inlet side of the compressor is connected with a second electromagnetic valve, the refrigerator further comprises a controller which is connected with the first electromagnetic valve and the second electromagnetic valve, 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, 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, and the controller allows and limits the flow of refrigerant in the first refrigeration circuit and/or the second refrigeration circuit by controlling the first electromagnetic valve and the second electromagnetic valve.
3. The refrigerator of claim 2, wherein: the first electromagnetic valve is constructed as a one-inlet two-outlet valve and comprises an ice making outlet and a refrigerating outlet; the second electromagnetic valve is constructed as a two-in one-out valve and comprises an ice making inlet and a refrigerating inlet; in the ice making chamber cooling mode, the controller closes the refrigeration outlet and then closes the refrigeration inlet.
4. The refrigerator of claim 2, wherein: the first electromagnetic valve is constructed as a one-inlet two-outlet valve and comprises an ice making outlet and a refrigerating outlet; the second electromagnetic valve is constructed as a two-in one-out valve and comprises an ice making inlet and a refrigerating inlet; in the refrigeration compartment cold supply mode, the flow of the refrigerant in the second refrigeration loop is limited, and the controller closes the ice making outlet and then closes the ice making inlet.
5. The refrigerator of claim 1, wherein: the second refrigeration loop comprises an ice making evaporator, the ice making chamber is arranged in the door body, the condenser is connected with the ice making evaporator through a refrigerant pipe assembly, the ice making evaporator is connected with the compressor through an ice making air return pipe assembly, the refrigerant pipe assembly and the ice making air return pipe assembly are both connected to the plate heat exchanger, and the plate heat exchanger is buried in a foaming layer of the door body.
6. The refrigerator of claim 5, wherein: the ice maker comprises an ice tray for containing ice making water, the ice making evaporator comprises a refrigerant pipe which is in direct contact with the bottom of the ice tray for heat exchange, the outlet side of the refrigerant pipe is connected to the plate type heat exchanger, and a liquid storage device is connected between the outlet side of the refrigerant pipe and the plate type heat exchanger.
7. The refrigerator of claim 6, wherein: 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, the metal plate is in direct contact with the refrigerant pipe and fixes the refrigerant pipe at the bottom of the ice tray, and the ice making chamber is also internally provided with a fan which drives the air flow to circulate between the metal plate and the ice storage box.
8. The refrigerator of claim 2, wherein: an ice making chamber temperature sensor connected with the controller is arranged in the ice making chamber, and the controller controls the chamber cold supply mode and the ice making cold supply mode to be alternately carried out at preset time intervals before the temperature detected by the ice making chamber temperature sensor reaches the preset temperature.
9. The refrigerator of claim 2, wherein: an ice making chamber temperature sensor connected with the controller is arranged in the ice making chamber, the temperature detected by the ice making chamber temperature sensor reaches a preset temperature, and the controller controls a chamber cooling mode and limits the flow of the refrigerant in the second refrigeration loop.
10. A refrigerating system for a refrigerator comprises a compressor and a condenser connected to the outlet side of the compressor, and is characterized by further comprising 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 a freezing chamber, and the second refrigerating circuit is used for providing cold energy for an ice making chamber; the refrigeration system comprises a compartment cooling mode and an ice-making cooling mode, wherein the compartment cooling mode allows the refrigerant in the first refrigeration loop to flow; an ice-making and cooling mode restricting refrigerant flow in the first refrigeration circuit and allowing refrigerant flow in the second refrigeration circuit.
11. The refrigerating system for a refrigerator as claimed in claim 10, wherein: the refrigerant compressor further comprises a first electromagnetic valve connected to the outlet side of the condenser and a second electromagnetic valve connected to the inlet side of the compressor, wherein 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, 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, and the first electromagnetic valve and the second electromagnetic valve are operable to allow and limit the flow of refrigerant in the first refrigeration circuit and/or the second refrigeration circuit.
12. The refrigerating system for a refrigerator as claimed in claim 11, wherein: the first electromagnetic valve is constructed as a one-inlet two-outlet valve and comprises an ice making outlet and a refrigerating outlet; the second electromagnetic valve is constructed into a two-in one-out valve which comprises an ice making inlet and a refrigerating inlet; in the ice making chamber cooling mode, the refrigeration inlet is closed later than the refrigeration outlet; in the refrigeration compartment cooling mode, the flow of refrigerant in the second refrigeration circuit is restricted, and the ice making inlet is closed later than the ice making outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002157.8A CN114719511A (en) | 2021-01-04 | 2021-01-04 | Refrigerator and refrigerating system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002157.8A CN114719511A (en) | 2021-01-04 | 2021-01-04 | Refrigerator and refrigerating system thereof |
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| CN114719511A true CN114719511A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110002157.8A Pending CN114719511A (en) | 2021-01-04 | 2021-01-04 | Refrigerator and refrigerating system thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2021
- 2021-01-04 CN CN202110002157.8A patent/CN114719511A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Title |
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| 彦启森: "制冷技术及其应用", 中国建筑工业出版社, pages: 260 - 261 * |
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