CN110986410A

CN110986410A - Refrigeration system of low-temperature storage device, low-temperature storage device and control method

Info

Publication number: CN110986410A
Application number: CN201911191958.2A
Authority: CN
Inventors: 姚书强; 冷川; 孙彬
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-04-10

Abstract

The embodiment of the invention discloses a refrigeration system of a low-temperature storage device, the low-temperature storage device and a control method, wherein the refrigeration system of the low-temperature storage device comprises: the system comprises a compressor, a condenser, an electric control module, an electric control valve and N evaporators, wherein N is an integer greater than 1, and an inlet of the electric control module is connected with the condenser; n outlets of the electric control module are respectively connected with an air suction port of the compressor through N refrigerant main lines, and each refrigerant main line is provided with an evaporator; a refrigerant branch is arranged between the refrigerant main lines where any two evaporators are located and is connected with the electric control valve; when any two evaporators are a first evaporator and a second evaporator, the inlet of the electric control valve is connected with the outlet of the first evaporator, the first outlet of the electric control valve is connected with the inlet of the second evaporator through a refrigerant branch, and the second outlet of the electric control valve is connected with the air suction port of the compressor.

Description

Refrigeration system of low-temperature storage device, low-temperature storage device and control method

Technical Field

The embodiment of the invention relates to the field of refrigeration, in particular to a refrigeration system of a low-temperature storage device, the low-temperature storage device and a control method.

Background

At present, a multi-compartment refrigerator can adopt a multi-cycle refrigeration system to independently adjust the temperature of each compartment, but the closing of any one compartment or the closing of any two compartments cannot be realized, so that the diversified requirements of users cannot be met.

For example: in a refrigerator comprising three compartments of a wine area, a cold storage and a freezing, only the single closing of the wine area or the cold storage compartment can be realized, the single closing of the freezing compartment cannot be realized, and the single closing of any two compartments including the freezing compartment cannot be realized. Like this, when the user only need use wine compartment room to store and eat the material, need close when cold-stored room and freezing room promptly, because freezing room can not close alone, just can refrigerate wine compartment room and freezing room for the energy consumption increases, and the complete machine noise is great, and user experience is relatively poor.

Disclosure of Invention

The invention provides a refrigeration system of a low-temperature storage device, the low-temperature storage device and a control method, which solve the problem that one compartment or two compartments can not be closed at will in a multi-compartment refrigerator.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a refrigeration system for a cryogenic storage device, which may include: the system comprises a compressor, a condenser, an electric control module, an electric control valve and N evaporators, wherein N is an integer greater than 1;

wherein, the inlet of the electric control module is connected with the condenser;

n outlets of the electric control module are respectively connected with an air suction port of the compressor through N refrigerant main lines, and each refrigerant main line is provided with an evaporator;

a refrigerant branch is arranged between the refrigerant main lines where any two evaporators are located and is connected with the electric control valve;

when any two evaporators are a first evaporator and a second evaporator, the inlet of the electric control valve is connected with the outlet of the first evaporator, the first outlet of the electric control valve is connected with the inlet of the second evaporator through a refrigerant branch, and the second outlet of the electric control valve is connected with the air suction port of the compressor.

With reference to the first aspect, in one possible implementation manner, the electric control valve is a first solenoid valve with one inlet and two outlets or a three-way electric valve with one inlet and two outlets.

With reference to the first aspect and the possible implementations described above, in another possible implementation, when N is 3, the electronic control module includes a four-way electric valve with one inlet and three outlets.

With reference to the first aspect and the possible implementation manners, in another possible implementation manner, when N is 3, the electronic control module includes a second solenoid valve and a third solenoid valve that are one-in and two-out;

the inlet of the second electromagnetic valve is the inlet of the electric control module, the first outlet of the second electromagnetic valve is connected with the inlet of the third electromagnetic valve, the second outlet of the second electromagnetic valve, and the first outlet and the second outlet of the third electromagnetic valve are used as three outlets of the electric control module.

With reference to the first aspect and the possible implementations described above, in another possible implementation, the refrigeration system of the low-temperature storage device further includes: the first throttling device is arranged on the refrigerant branch;

the first throttling device is arranged on a refrigerant branch between a first outlet of the electric control valve and an inlet of the second evaporator.

With reference to the first aspect and the possible implementations described above, in another possible implementation, the refrigeration system of the low-temperature storage device further includes: a second throttling device;

the second throttling device is arranged on the refrigerant trunk, between the outlet of the electric control module and the inlet of the evaporator, and the first outlet of the electric control valve is connected with the outlet of the second throttling device through the refrigerant branch.

In a second aspect, the present invention provides a cryogenic storage device, which may include: the refrigeration system and the control unit of the low-temperature storage device provided by the first aspect or a possible implementation manner of the first aspect;

the control unit is used for controlling the electric control module and the electric control valve according to a refrigeration instruction so as to enable the refrigerant to flow to the K evaporators; the low-temperature storage device comprises N chambers, wherein N is an integer greater than 1, and K is an integer greater than or equal to 1 and less than or equal to N.

With reference to the second aspect, in a possible implementation manner, the control unit is specifically configured to:

acquiring identifications of K evaporators needing to be refrigerated according to a refrigeration instruction;

determining target control parameters corresponding to the identifications of the K evaporators according to the corresponding relation between the prestored identifications of the evaporators and the control parameters;

and controlling the outlets of the electric control module and the electric control valve according to the target control parameters.

In a third aspect, the present invention provides a method for controlling a refrigeration system of a cryogenic storage device provided in the first aspect or in a possible implementation manner of the first aspect, where the method may include: controlling the electric control module and the electric control valve according to a refrigeration instruction so that the refrigerant flows to the K evaporators; the low-temperature storage device comprises N chambers, wherein N is an integer greater than 1, and K is an integer greater than or equal to 1 and less than or equal to N.

With reference to the third aspect, in one possible implementation manner, the controlling the electronic control module and the electronic control valve according to a refrigeration instruction includes:

In a fourth aspect, there is provided a cryogenic storage device comprising: a processor; when the low-temperature storage device is operated, the processor executes the computer-executable instructions to cause the low-temperature storage device to execute the control method of the low-temperature storage device as in any one of the third aspect or possible implementation manners of the third aspect.

In a fifth aspect, there is provided a computer storage medium having stored thereon computer-executable instructions that, when executed on a cryogenic storage device, cause the cryogenic storage device to perform a method of controlling the cryogenic storage device as in any one of the third aspect or possible implementations of the third aspect.

According to the control method of the low-temperature storage device, when the low-temperature storage device comprises N compartments, N is an integer larger than 1, N outlets of the electronic control module are respectively connected with the compressor through the refrigerant trunk lines, and each refrigerant trunk line is provided with one evaporator, so that the parallel connection of the N evaporators is realized, and the independent refrigeration of a single compartment is met. And refrigerant branches are arranged between any two refrigerant trunk lines, an electric control valve is introduced, a first outlet of the electric control valve is connected with the refrigerant branches, and a second outlet of the electric control valve is connected with the refrigerant trunk lines, so that the series connection between evaporators is realized, and the simultaneous refrigeration of a plurality of compartments is met. Like this, the low temperature storage device can be according to user's refrigeration instruction, controls the refrigerant flow direction through the export of control electric control module and automatically controlled valve to make refrigerant flow direction need refrigerated K evaporimeter, K is an arbitrary integer between 1 to N, that is to say, realized closing a compartment wantonly, other (N-1) compartments refrigerate simultaneously, and realized closing two compartments wantonly, other (N-2) compartments refrigerate simultaneously, so on and so on, can also realize the refrigeration of N compartments simultaneously.

Drawings

Fig. 1 is a schematic diagram showing a three-compartment refrigerator according to the related art;

fig. 2 is a schematic diagram showing the composition of another three-compartment refrigerator provided in the related art;

FIG. 3 is a schematic diagram of a refrigerant cycle provided in the related art;

FIG. 4 is a schematic diagram of another refrigerant cycle provided in the related art;

FIG. 5 is a schematic view of another refrigerant cycle provided in the related art;

FIG. 6 is a schematic structural diagram of a solenoid valve according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a refrigeration system of a cryogenic storage device according to an embodiment of the present invention;

fig. 8 is a schematic view of a refrigeration system of another cryogenic storage device according to an embodiment of the present invention;

fig. 9 is a flowchart illustrating a method for controlling a cryogenic storage device according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a refrigerant cycle according to an embodiment of the present invention;

fig. 11 is a schematic view of another refrigerant cycle according to an embodiment of the present invention;

fig. 12 is a schematic view of another refrigerant cycle according to an embodiment of the present invention;

fig. 13 is a schematic view of another refrigerant cycle according to an embodiment of the present invention;

fig. 14 is a schematic view of another refrigerant cycle according to an embodiment of the present invention;

fig. 15 is a schematic view of another refrigerant cycle according to an embodiment of the present invention;

fig. 16 is a schematic view of another refrigerant cycle according to an embodiment of the present invention;

fig. 17 is a schematic diagram illustrating a composition of a cryogenic storage device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic composition diagram of a three-compartment freezer provided in the related art. As shown in fig. 1, the refrigerator may include: compressor, condenser, drier-filter, reservoir, solenoid valve 1, solenoid valve 2, wine zone evaporator, refrigeration evaporator, freezing evaporator, capillary 1, capillary 2 and capillary 3.

An inlet of the solenoid valve 1 is connected with the drying filter, a first outlet of the solenoid valve 1 is connected with an inlet of the capillary tube 1, a second outlet of the solenoid valve 1 is connected with an inlet of the solenoid valve 2, a first outlet of the solenoid valve 2 is connected with an inlet of the capillary tube 2, and a second outlet of the solenoid valve 2 is connected with an inlet of the capillary tube 3.

The outlet of the capillary tube 1 is connected with the inlet of the wine area evaporator, and the outlet of the wine area evaporator is connected with the liquid storage device.

The outlet of the capillary tube 2 is connected with the inlet of the refrigeration evaporator, and the outlet of the refrigeration evaporator is connected with the liquid storage device.

The outlet of the capillary tube 3 is connected with the inlet of the freezing evaporator, and the outlet of the freezing evaporator is connected with the liquid storage device.

It should be noted that the solenoid valve 1 and the solenoid valve 2 are both a three-way solenoid valve with one inlet and two outlets, and the refrigerant can only flow out from one of the two outlets after flowing into the solenoid valve 1 or the solenoid valve 2.

In the three compartments of the wine compartment, the cold storage compartment and the freezing compartment, the wine compartment has the highest required temperature, the freezing compartment has the lowest required temperature, and the cold storage compartment has the proper required temperature, so that the lengths of the capillary tube 1, the capillary tube 2 and the capillary tube 3 are different to adjust the evaporating temperature of the refrigerant entering the corresponding evaporator.

Based on fig. 1, the refrigerant cycle process is as follows: after being pressurized by the compressor, the refrigerant flows through the condenser and the dry filter, flows into the electromagnetic valve 1, and then flows out from the corresponding outlet according to the control of a user and a preset control rule. Specifically, the method comprises the following steps: when the wine compartment needs to be refrigerated, after the refrigerant flows into the electromagnetic valve 1, the refrigerant is controlled to flow out of the first outlet of the electromagnetic valve 1, flows into the capillary tube 1 to achieve the required temperature of the wine compartment after throttling and pressure reduction, flows into the wine compartment evaporator to cool the wine compartment, and finally returns to the compressor through the liquid storage device. When the refrigerating chamber needs to be refrigerated, after the refrigerant flows into the electromagnetic valve 1, the refrigerant is controlled to flow out of the second outlet of the electromagnetic valve 1 and flow into the electromagnetic valve 2, the refrigerant flows out of the first outlet of the electromagnetic valve 2, flows into the capillary tube 2, is throttled and reduced in pressure and then reaches the required temperature of the refrigerating chamber, flows into the refrigerating evaporator to cool the refrigerating chamber, and finally returns to the compressor through the liquid storage device. When the freezing chamber needs to be refrigerated, after the refrigerant flows into the electromagnetic valve 1, the refrigerant is controlled to flow out of the second outlet of the electromagnetic valve 1, flows into the electromagnetic valve 2, flows out of the second outlet of the electromagnetic valve 2, flows into the capillary tube 3, is throttled and reduced in pressure, reaches the required temperature of the freezing chamber, flows into the freezing evaporator to cool the freezing chamber, and finally returns to the compressor through the liquid storage device.

Based on fig. 1, when any two or three of the wine compartment, the refrigerating compartment, and the freezing compartment need to be cooled at the same time, the refrigerant may be circulated through each evaporator by controlling the two solenoid valves. For example, when the wine compartment and the cold storage compartment need to be refrigerated simultaneously and the freezing compartment does not need to be refrigerated, the refrigerant can flow through the wine compartment evaporator to cool the wine compartment by controlling the electromagnetic valve. After the temperature of the wine compartment is reduced to the preset temperature, the electromagnetic valve can be switched to change the flow direction of the refrigerant, so that the refrigerant flows through the refrigeration evaporator to cool the refrigeration compartment. When the temperature of the cold storage chamber is reduced to the preset temperature, the electromagnetic valve is switched again, so that the refrigerant flows through the wine area evaporator again, and the circulation is repeated.

However, since the refrigerant circulates through the evaporators in the process of cooling the multiple chambers simultaneously, the temperature of the non-cooling chamber increases, and the material of the non-cooling chamber is easily deteriorated. And the compressor is continuously operated, resulting in an increase in energy consumption.

Fig. 2 is a schematic diagram of another three-compartment refrigerator provided in the related art, and as shown in fig. 2, the refrigerator may include: condenser, compressor, drier-filter, reservoir, solenoid valve 1, solenoid valve 2, wine zone evaporator, refrigeration evaporator, freezing evaporator, capillary 1, capillary 2 and capillary 3.

The outlet of the capillary tube 1 is connected with the inlet of the wine area evaporator, and the outlet of the wine area evaporator is connected with the inlet of the freezing evaporator.

The outlet of the capillary tube 2 is connected with the inlet of the refrigeration evaporator, and the outlet of the refrigeration evaporator is connected with the inlet of the freezing evaporator.

In this way, by connecting the outlets of the wine section evaporator and the refrigerated evaporator to the inlet of the refrigerated evaporator, the wine section evaporator and the refrigerated evaporator are maintained in a parallel relationship, and the wine section evaporator and the refrigerated evaporator, or the refrigerated evaporator and the refrigerated evaporator, are in a series relationship.

Based on fig. 2, as shown by the dotted line in fig. 3, when the refrigerating chamber and the freezing chamber need to be cooled and the wine compartment is closed, the circulation process of the refrigerant is as follows: the refrigerant is pressurized by the compressor, passes through the condenser and the dry filter, and flows into the solenoid valve 1. The control refrigerant flows out from the second outlet of the electromagnetic valve 1, flows into the electromagnetic valve 2, flows out from the first outlet of the electromagnetic valve 2, flows into the capillary tube 2, reaches the required temperature of the refrigerating chamber after throttling and pressure reduction, flows into the refrigerating evaporator to cool the refrigerating chamber, flows into the freezing evaporator to cool the refrigerating chamber, and finally flows through the liquid storage device to flow back to the compressor.

Based on fig. 2, as shown by the dotted line in fig. 4, when the wine compartment and the freezing compartment need to be cooled and the refrigerating compartment is closed, the circulation process of the refrigerant is as follows: the refrigerant is pressurized by the compressor, passes through the condenser and the dry filter, and flows into the solenoid valve 1. The control refrigerant flows out from a first outlet of the electromagnetic valve 1, flows into the capillary tube 1, reaches the required temperature of the wine compartment after throttling and pressure reduction, flows into the wine compartment evaporator to cool the wine compartment, then flows into the freezing evaporator to cool the freezing compartment, and finally flows through the liquid storage device to flow back to the compressor.

Based on fig. 2, as shown by the dotted line in fig. 5, when the freezing chamber needs to be cooled and the wine compartment and the refrigerating chamber are closed, the circulation process of the refrigerant is as follows: the refrigerant is pressurized by the compressor, passes through the condenser and the dry filter, and flows into the solenoid valve 1. The control refrigerant flows out from a second outlet of the electromagnetic valve 1, flows into the electromagnetic valve 2, flows out from a second outlet of the electromagnetic valve 2, flows into the capillary tube 3, reaches the required temperature of the freezing chamber after throttling and pressure reduction, flows into the freezing evaporator to cool the freezing chamber, and finally flows through the liquid storage device to flow back to the compressor.

The three-compartment refrigerator in fig. 2 can realize independent closing of the wine compartment or the cold storage compartment and simultaneous closing of the wine compartment and the cold storage compartment, so that the wine compartment and the cold storage compartment need to be simultaneously refrigerated, or the cold storage compartment and the cold storage compartment need to be simultaneously refrigerated, the refrigerant can realize series flow, thereby reducing deterioration of food materials and reducing energy consumption to a certain extent. However, the three-compartment refrigerator of fig. 2 still has the following problems:

1. when the three chambers need to be refrigerated simultaneously, the serial flow of the refrigerant cannot be realized;

2. the freezing chamber cannot be closed independently, so that the wine chamber or the refrigerating chamber cannot be cooled independently, and the wine chamber and the refrigerating chamber cannot be cooled simultaneously;

3. when the refrigerant flows in series on the wine area evaporator and the freezing evaporator, the evaporation temperature of the refrigerant entering the freezing evaporator cannot be adjusted.

In order to solve the problem that one compartment or two compartments cannot be closed at will in a multi-compartment refrigerator, an embodiment of the present invention provides a refrigeration system of a low-temperature storage device, where the low-temperature storage device may be a refrigerator, for example: a multi-room parlor cabinet. The refrigeration system of the cryogenic storage device may include: the system comprises a compressor, a condenser, an electric control module, electric control valves and N evaporators. The N evaporators are in one-to-one correspondence with N compartments of a refrigerating system of the low-temperature storage device, the N evaporators are respectively used for refrigerating the N compartments, and N is an integer larger than 1.

Furthermore, a drying filter is arranged between the inlet of the electronic control module and the condenser. And a liquid storage device is arranged between the outlet of the evaporator and the air suction port of the compressor.

Further, the electric control valve may be a first electromagnetic valve with one inlet and two outlets or a three-way electric valve with one inlet and two outlets. And the refrigerant can only flow out of one of the two outlets after flowing into the electric control valve. The structural diagram of the one-inlet-two-outlet solenoid valve is shown in fig. 6, a switching valve plate is arranged between two outlets of the solenoid valve, and an inlet of the solenoid valve is communicated with the first outlet or the second outlet by controlling the switching valve plate, so that the refrigerant flows out of the first outlet or the second outlet. The first outlet of the electromagnetic valve is connected with the refrigerant branch, and the second outlet of the electromagnetic valve is connected with the refrigerant trunk.

Further, when N is 3, the electronic control module may include a four-way electric valve with three inlets and three outlets. Alternatively, the electronic control module may include a second solenoid valve and a third solenoid valve with one inlet and three outlets.

When the electronic control module comprises a second electromagnetic valve and a third electromagnetic valve, the inlet of the second electromagnetic valve is the inlet of the electronic control module, the first outlet of the second electromagnetic valve is connected with the inlet of the third electromagnetic valve, the second outlet of the second electromagnetic valve, and the first outlet and the second outlet of the third electromagnetic valve are used as three outlets of the electronic control module. The electric control module is a four-way electric valve, and compared with the electric control module comprising two electromagnetic valves, the electric control module can reduce welding spots and parts, thereby improving the reliability of the system.

Further, the refrigeration system of the low-temperature storage device may further include: the first throttling device is arranged on the refrigerant branch. The first throttling device is arranged on a refrigerant branch between a first outlet of the electric control valve and an inlet of the second evaporator.

Further, the refrigeration system of the low-temperature storage device may further include: and a second throttling device.

It should be noted that, in the embodiment of the present invention, the throttling device may be a capillary tube. And through setting up first throttling arrangement and second throttling arrangement, guarantee that the refrigerant carries out the throttle decompression before getting into every evaporimeter to satisfy the temperature demand of different compartments.

An embodiment of the present invention further provides a low-temperature storage device, which may include: the refrigerating system and the control unit of the low-temperature storage device. The control unit may be a control board of the cryogenic storage device.

The control unit is used for controlling the electric control module and the electric control valve according to the refrigeration instruction, so that the refrigerant flows to the K evaporators. The low-temperature storage device comprises N chambers, wherein N is an integer greater than 1, and K is an integer greater than or equal to 1 and less than or equal to N.

In one implementation, the control unit is specifically configured to: acquiring identifications of K evaporators needing to be refrigerated according to a refrigeration instruction; determining target control parameters corresponding to the identifications of the K evaporators according to the corresponding relation between the prestored identifications of the evaporators and the control parameters; and controlling the outlets of the electric control module and the electric control valve according to the target control parameters.

In order to facilitate understanding of those skilled in the art, in the embodiment of the present invention, a refrigeration system of a low temperature storage device is described by taking an example in which N is 3, an electric control module is a four-way electric valve with one inlet and three outlets, an electric control valve is an electromagnetic valve with one inlet and two outlets, a first throttling device is a first capillary tube, and a second throttling device is a second capillary tube.

As shown in fig. 7, the refrigeration system of the low-temperature storage device may include: compressor, condenser, drier-filter, reservoir, four-way motorised valve, wine district evaporimeter, cold-stored evaporimeter, freezing evaporimeter, solenoid valve 1, solenoid valve 2, solenoid valve 3, first capillary 1, first capillary 2, first capillary 3, second capillary 1, second capillary 2 and second capillary 3.

Wherein, the inlet of the four-way electric valve is connected with the dry filter;

a first outlet of the four-way electric valve is connected with an air suction port of the compressor through a refrigerant trunk line 1, and a second capillary tube 1 and a wine area evaporator are arranged on the refrigerant trunk line 1; the first outlet is connected with the inlet of the second capillary tube 1, and the outlet of the second capillary tube 1 is connected with the inlet of the wine area evaporator;

a second outlet of the four-way electric valve is connected with an air suction port of the compressor through a refrigerant trunk 2, and a second capillary tube 2 and a refrigeration evaporator are arranged on the refrigerant trunk 2; the second outlet is connected with the inlet of the second capillary tube 2, and the outlet of the second capillary tube 2 is connected with the inlet of the refrigeration evaporator;

a third outlet of the four-way electric valve is connected with an air suction port of the compressor through a refrigerant trunk 3, and a second capillary tube 3 and a refrigeration evaporator are arranged on the refrigerant trunk 3; the third outlet is connected with the inlet of the second capillary tube 3, and the outlet of the second capillary tube 3 is connected with the inlet of the refrigeration evaporator;

a refrigerant branch 1 is arranged between the refrigerant main line 1 and the refrigerant main line 2, and the refrigerant branch 1 is connected with the electromagnetic valve 1. Wherein, the inlet of the electromagnetic valve 1 is connected with the outlet of the wine area evaporator, the first outlet of the electromagnetic valve 1 is connected with the inlet of the cold storage evaporator through the refrigerant branch 1 and is also connected with the outlet of the second capillary tube 2, and the second outlet of the electromagnetic valve 1 is connected with the air suction port of the compressor; a first capillary tube 1 is arranged on a refrigerant branch 1 between a first outlet of the electromagnetic valve 1 and an inlet of the refrigeration evaporator;

a refrigerant branch 2 is arranged between the refrigerant main line 2 and the refrigerant main line 3, and the refrigerant branch 2 is connected with the electromagnetic valve 2; the inlet of the electromagnetic valve 2 is connected with the outlet of the refrigeration evaporator, the first outlet of the electromagnetic valve 2 is connected with the inlet of the refrigeration evaporator through a refrigerant branch 2 and is also connected with the outlet of the second capillary tube 3, and the second outlet of the electromagnetic valve 2 is connected with the air suction port of the compressor; a first capillary tube 2 is arranged on a refrigerant branch 2 between a first outlet of the electromagnetic valve 2 and an inlet of the refrigeration evaporator;

a refrigerant branch 3 is arranged between the refrigerant main line 3 and the refrigerant main line 1, and the refrigerant branch 3 is connected with the electromagnetic valve 3; wherein, the inlet of the electromagnetic valve 3 is connected with the outlet of the freezing evaporator, the first outlet of the electromagnetic valve 3 is connected with the inlet of the wine area evaporator through the refrigerant branch 3 and is also connected with the outlet of the second capillary tube 1, and the second outlet of the electromagnetic valve 3 is connected with the air suction port of the compressor; and a first capillary tube 3 is arranged on a refrigerant branch 3 between a first outlet of the electromagnetic valve 3 and an inlet of the wine area evaporator.

It should be noted that, in the embodiment of the present invention, when a refrigerant branch is disposed between refrigerant main lines where any two evaporators are located, since the first evaporator and the second evaporator included in any two evaporators are interchangeable, the position of the electromagnetic valve has multiple implementation manners. For example, where any two evaporators include a wine section evaporator and a freeze evaporator: in one implementation, when the first evaporator is a freezing evaporator and the second evaporator is a wine area evaporator, the solenoid valve 3 may be installed on the refrigerant trunk line 3, that is, the refrigerant trunk line where the freezing evaporator is located, as shown in fig. 7; in another implementation, when the first evaporator is a wine section evaporator and the second evaporator is a freezing evaporator, the solenoid valve 3 may be installed on the refrigerant trunk line 1, i.e. the refrigerant trunk line on which the wine section evaporator is located, as shown in fig. 8.

Fig. 9 is a flowchart of a method for controlling a refrigeration system of a cryogenic storage device according to an embodiment of the present invention, where the method may include:

101. and controlling the electric control module and the electric control valve according to the refrigeration instruction so that the refrigerant flows to the K evaporators.

The control unit of the low-temperature storage device can control the electric control module and the electric control valve of the refrigeration system of the low-temperature storage device according to the refrigeration instruction after receiving the refrigeration instruction of a user, so that the refrigerant flows to the K evaporators. The low-temperature storage device comprises N chambers, wherein N is an integer greater than 1, and K is an integer greater than or equal to 1 and less than or equal to N.

In a specific implementation, the control unit controls the electric control module and the electric control valve according to the refrigeration instruction, and specifically may include: acquiring identifications of K evaporators needing to be refrigerated according to a refrigeration instruction; determining target control parameters corresponding to the identifications of the K evaporators according to the corresponding relation between the prestored identifications of the evaporators and the control parameters; and controlling the outlets of the electric control module and the electric control valve according to the target control parameters. Wherein the target control parameters may include: from which outlet of the electronic control module the refrigerant flows out, and from which outlet of each electronic control valve the refrigerant flows out.

For example, based on fig. 8, assuming that the low-temperature storage device includes three compartments of wine area, cold storage and freezing, the embodiment of the present invention can realize the arbitrary closing of one of the compartments, i.e., the simultaneous cooling of the other two compartments, and can realize the arbitrary closing of two of the compartments, i.e., the simultaneous cooling of the other one compartment, and can also realize the simultaneous cooling of the three compartments.

When the cooling command is used to instruct cooling of the wine compartment, i.e. closing of the refrigerating compartment and the freezing compartment, as shown by the dotted line in fig. 10, the circulation process of the cooling medium is as follows: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And the refrigerant is controlled to flow out of a first outlet of the four-way electric valve, flows into the second capillary tube 1, is throttled and depressurized to reach the required temperature of the wine compartment chamber, and flows into the wine compartment evaporator to cool the wine compartment chamber. And then the refrigerant flows into the solenoid valve 1, flows out from the second outlet of the solenoid valve 1, flows into the solenoid valve 3, flows out from the second outlet of the solenoid valve 3, flows through a liquid storage device and returns to the compressor, and the circulation is realized.

When the cooling command is used to instruct cooling of the refrigerating compartment, i.e. closing of the wine compartment and the freezing compartment, as shown by the dotted line in fig. 11, the circulation process of the cooling medium is as follows: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And the refrigerant is controlled to flow out of a second outlet of the four-way electric valve, flows into the second capillary tube 2, is throttled and depressurized to reach the required temperature of the refrigerating chamber, and flows into the refrigerating evaporator to cool the refrigerating chamber. Then flows into the electromagnetic valve 2, and controls the refrigerant to flow out of the second outlet of the electromagnetic valve 2, flow through the liquid storage device and return to the compressor, so as to circulate.

When the cooling command is used to instruct cooling of the freezing compartment, i.e. closing of the wine compartment and the refrigerating compartment, as shown by the dotted line in fig. 12, the circulation process of the cooling medium is as follows: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And controlling the refrigerant to flow out of a third outlet of the four-way electric valve, flowing into the second capillary tube 3, throttling and depressurizing to reach the required temperature of the freezing chamber, and flowing into the freezing evaporator to cool the freezing chamber. And finally, the liquid flows through the liquid storage device and returns to the compressor, so that the circulation is realized.

When the cooling command is used to instruct to cool the wine compartment and the cold storage compartment simultaneously, i.e. to close the freezing compartment, as shown by the dotted line in fig. 13, the circulation process of the cooling medium is as follows: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And the refrigerant is controlled to flow out of a first outlet of the four-way electric valve, flows into the second capillary tube 1, is throttled and depressurized to reach the required temperature of the wine compartment chamber, and flows into the wine compartment evaporator to cool the wine compartment chamber. Then the refrigerant flows into the electromagnetic valve 1, flows out from a first outlet of the electromagnetic valve 1, flows into the first capillary tube 1, is throttled and reduced in pressure again, reaches the required temperature of the refrigerating chamber, and flows into the refrigerating evaporator to reduce the temperature of the refrigerating chamber. Then flows into the electromagnetic valve 2, and controls the refrigerant to flow out of the second outlet of the electromagnetic valve 2, flow through the liquid storage device and return to the compressor, so as to circulate.

When the cooling command is used to instruct to cool the wine compartment and the freezing compartment simultaneously, i.e. to close the refrigerating compartment, as shown by the dotted line in fig. 14, the cycle of the cooling medium is as follows: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And the refrigerant is controlled to flow out of a first outlet of the four-way electric valve, flows into the second capillary tube 1, is throttled and depressurized to reach the required temperature of the wine compartment chamber, and flows into the wine compartment evaporator to cool the wine compartment chamber. Then flows into the solenoid valve 1, the control refrigerant flows out from the second outlet of the solenoid valve 1, flows into the solenoid valve 3, and flows out from the first outlet of the solenoid valve 3. Flows into the first capillary tube 3, is throttled and depressurized again, reaches the required temperature of the freezing chamber, and flows into the freezing evaporator to cool the freezing chamber. Then flows through the liquid storage device and returns to the compressor, so as to circulate.

When the cooling command is used to instruct to cool the cold storage compartment and the freezing compartment simultaneously, i.e. to close the wine compartment, as shown by the dotted line in fig. 15, the circulation process of the cooling medium is as follows: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And the refrigerant is controlled to flow out of a second outlet of the four-way electric valve, flows into the second capillary tube 2, is throttled and depressurized to reach the required temperature of the refrigerating chamber, and flows into the refrigerating evaporator to cool the refrigerating chamber. Then the refrigerant flows into the electromagnetic valve 2, the refrigerant is controlled to flow out from a first outlet of the electromagnetic valve 2, flows into the first capillary tube 2, is throttled and decompressed again, reaches the required temperature of the freezing chamber, and flows into the freezing evaporator to cool the freezing chamber. Then flows through the liquid storage device and returns to the compressor, so as to circulate.

When the cooling command is used to instruct the wine compartment, the refrigerating compartment, and the freezing compartment to be cooled simultaneously, as shown by the dotted line in fig. 16, the circulation process of the cooling medium is: the refrigerant is pressurized by the compressor, flows through the condenser and the drying filter, and flows to the four-way electric valve. And the refrigerant is controlled to flow out of a first outlet of the four-way electric valve, flows into the second capillary tube 1, is throttled and depressurized to reach the required temperature of the wine compartment chamber, and flows into the wine compartment evaporator to cool the wine compartment chamber. Then the refrigerant flows into the electromagnetic valve 1, flows out from a first outlet of the electromagnetic valve 1, flows into the first capillary tube 1, is throttled and reduced in pressure again, reaches the required temperature of the refrigerating chamber, and flows into the refrigerating evaporator to reduce the temperature of the refrigerating chamber. Then the refrigerant flows into the electromagnetic valve 2, the refrigerant is controlled to flow out from a first outlet of the electromagnetic valve 2, flows into the first capillary tube 2, is throttled and decompressed again, reaches the required temperature of the freezing chamber, and flows into the freezing evaporator to cool the freezing chamber. Then flows through the liquid storage device and returns to the compressor, so as to circulate.

Fig. 17 is a schematic diagram illustrating a composition of another cryopreservation apparatus according to an embodiment of the invention, and as shown in fig. 17, the cryopreservation apparatus may include: the processor 21 is configured to perform the steps shown in fig. 9, and specifically, the processor 21 may be a control board of the cryogenic storage device.

In an embodiment of the present invention, the low-temperature storage device may further include: memory 22 for storing computer-executable instructions and data. The memory 22 may be separate or integrated with the processor 21. And memory 22 is coupled to processor 21, processor 21 may perform various functions of the cryogenic storage device by invoking and executing computer executable instructions stored in memory 22, as well as invoking data in memory 22. Of course, the cryogenic storage device may also include other discrete devices, which is not specifically limited in this embodiment of the present invention.

Embodiments of the present invention also provide a computer storage medium including computer executable instructions that, when executed on the cryogenic storage device, cause the cryogenic storage device to perform the steps of the method embodiments.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be essentially or partially contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A refrigeration system for a cryogenic storage device, the refrigeration system comprising: the system comprises a compressor, a condenser, an electric control module, an electric control valve and N evaporators, wherein N is an integer greater than 1;

wherein the inlet of the electronic control module is connected with the condenser;

a refrigerant branch is arranged between refrigerant main lines where any two evaporators are located and is connected with the electric control valve;

when any two evaporators are a first evaporator and a second evaporator, the inlet of the electric control valve is connected with the outlet of the first evaporator, the first outlet of the electric control valve is connected with the inlet of the second evaporator through the refrigerant branch, and the second outlet of the electric control valve is connected with the air suction port of the compressor.

2. The refrigeration system of claim 1, wherein the electrical valve is a first solenoid valve with two inlets and two outlets or a three-way solenoid valve with two inlets and two outlets.

3. The system of claim 1 or 2, wherein the electrical control module comprises a four-way valve with three in and three out when N is 3.

4. The refrigeration system of the low-temperature storage device as claimed in claim 1 or 2, wherein when N is 3, the electronic control module comprises a second solenoid valve and a third solenoid valve which are in and out;

the inlet of the second electromagnetic valve is the inlet of the electronic control module, the first outlet of the second electromagnetic valve is connected with the inlet of the third electromagnetic valve, the second outlet of the second electromagnetic valve, and the first outlet and the second outlet of the third electromagnetic valve are used as three outlets of the electronic control module.

5. The refrigeration system of the cryogenic storage device of claim 1, further comprising: the first throttling device is arranged on the refrigerant branch;

6. The refrigeration system of the cryogenic storage device of claim 1, further comprising: a second throttling device;

the second throttling device is arranged on the refrigerant trunk line, between an outlet of the electronic control module and an inlet of the evaporator, and the first outlet of the electronic control valve is also connected with an outlet of the second throttling device through the refrigerant branch.

7. A cryogenic storage device, comprising: the refrigeration system and control unit of the cryogenic storage device of any of claims 1-6;

the control unit is used for controlling the electric control module and the electric control valve according to a refrigeration instruction so as to enable the refrigerant to flow to the K evaporators; the refrigeration instruction is used for indicating that K chambers corresponding to the K evaporators in a one-to-one mode are refrigerated, the low-temperature storage device comprises N chambers, N is an integer larger than 1, and K is an integer larger than or equal to 1 and smaller than or equal to N.

8. The cryogenic storage device of claim 7, wherein the control unit is specifically configured to:

acquiring the identifications of the K evaporators needing to be refrigerated according to the refrigeration instruction;

and controlling the electric control module and the outlet of the electric control valve according to the target control parameter.

9. A method of controlling a cryogenic storage device, for controlling a refrigeration system of the cryogenic storage device of any of claims 1-6, the method comprising:

controlling the electric control module and the electric control valve according to a refrigeration instruction so that the refrigerant flows to the K evaporators; the refrigeration instruction is used for indicating that K chambers corresponding to the K evaporators in a one-to-one mode are refrigerated, the low-temperature storage device comprises N chambers, N is an integer larger than 1, and K is an integer larger than or equal to 1 and smaller than or equal to N.

10. The method of claim 9, wherein the controlling the electronic control module and the electronic control valve according to the refrigeration command comprises: