CN109883109A - Multi-cycle refrigerator - Google Patents
Multi-cycle refrigerator Download PDFInfo
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- CN109883109A CN109883109A CN201910141463.2A CN201910141463A CN109883109A CN 109883109 A CN109883109 A CN 109883109A CN 201910141463 A CN201910141463 A CN 201910141463A CN 109883109 A CN109883109 A CN 109883109A
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- evaporator
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- solenoid valve
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- 238000003860 storage Methods 0.000 claims abstract description 91
- 239000003507 refrigerant Substances 0.000 claims abstract description 77
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000005057 refrigeration Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A kind of method that the present invention provides multi-cycle refrigerator and its distributes refrigerant, the multi-cycle refrigerator include: M storage compartment, control module and the refrigeration system to M storage compartment offer cooling capacity, wherein M is the integer more than or equal to two；The refrigeration system includes at least solenoid valve and M evaporator, and the solenoid valve is used to distribute to refrigerant M evaporator, and each evaporator provides cooling capacity to unique storage compartment；In process of refrigerastion, within a preset period of time, when difference at a first temperature of determining the first storage compartment between depreciation and the second temperature drop-out value of the second storage compartment is less than default difference threshold values, the control module controls the amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase, wherein, first evaporator is used to provide cooling capacity to the first storage compartment, and the default difference threshold values is less than zero.So as to balancedly each evaporator be given to distribute refrigerant.
Description
Technical field
The present invention relates to technical field of refrigeration equipment more particularly to a kind of multi-cycle refrigerators.
Background technique
Multi-cycle refrigerator would generally be provided with several storages compartment (for example, refrigerating chamber, freezing chamber or temperature-changing chamber etc.), and
It can be both provided with corresponding evaporator for each storage compartment, each evaporator provides cooling capacity for corresponding storage compartment, thus
Independent control can be carried out to the refrigeration of each storage compartment and optimized.In the refrigeration system of existing multi-cycle refrigerator
In system, it will usually be provided with solenoid valve, which distributes to multiple evaporators for the refrigerant of low-temp low-pressure, to be each
It stores compartment and cooling capacity is provided.
In the long-term work of inventor, it is found that the installation site of (1) solenoid valve does not measure up there are following phenomenon,
It is understood that in process of production, being difficult to accomplish abswolute level；(2) in actual use, due to the out-of-flatness on ground,
The position for also resulting in solenoid valve is not horizontal.This will lead to solenoid valve during distributing refrigerant, and there are non-uniform existing
As the amount for distributing to the refrigerant of certain evaporators can be more than the amount for the refrigerant for distributing to other evaporators, this will lead to
The temperature of some evaporators declines fastly, and the temperature of other evaporators declines slowly, this is unfavorable for the object in multi-cycle refrigerator
The preservation of product.
Therefore, in multi-cycle refrigerator, how to control evaporator and balancedly distribute refrigerant to each evaporator, just become
One urgent problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of multi-cycle refrigerators.
One of in order to achieve the above-mentioned object of the invention, an embodiment of the present invention provides a kind of multi-cycle refrigerator, comprising: M
A storage compartment, control module and the refrigeration system that compartment offer cooling capacity is provided to M, wherein M is whole more than or equal to two
Number；The refrigeration system includes at least solenoid valve and M evaporator, and the solenoid valve is used to refrigerant distributing to M evaporation
Device, and each evaporator provides cooling capacity to unique storage compartment；In process of refrigerastion, within a preset period of time, work as determination
When difference between first storage compartment temperature drop-out value and the temperature drop-out value of the second storage compartment is less than default difference threshold values,
The control module controls the amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase, wherein the first evaporator is used
In providing cooling capacity to the first storage compartment, the default difference threshold values is less than zero.
As the further improvement of an embodiment of the present invention, it is less than or equal in the temperature for determining the second storage compartment default
When temperature value, the control module controls the solenoid valve and stops distributing refrigerant to the second evaporator, wherein the second evaporator
For providing cooling capacity to the second storage compartment.
As the further improvement of an embodiment of the present invention, the refrigeration system further include: M capillary is successively gone here and there
Compressor, condenser and the device for drying and filtering of connection；The solenoid valve is connected to the device for drying and filtering, and the first of each evaporator
End is connected to the solenoid valve by unique capillary, and the second end of each evaporator is connected to the compressor.
It is described " to control the solenoid valve increase and distribute to the first steaming as the further improvement of an embodiment of the present invention
Send out the amount of the refrigerant of device " it specifically includes: control the amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase, and institute
The absolute value for stating difference is bigger, and the amount is bigger.
It is described " to control the solenoid valve increase and distribute to the first steaming as the further improvement of an embodiment of the present invention
Send out the amount of the refrigerant of device " it specifically includes: the amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase is controlled, is controlled
The solenoid valve reduces the amount for distributing to the refrigerant of the second evaporator, wherein the second evaporator is used for the second storage compartment
Cooling capacity is provided.
As the further improvement of an embodiment of the present invention, the amount that the refrigerant of the first evaporator is distributed in increase is Δ
V, reducing and distributing to the amount of the refrigerant of the second evaporator is Δ V.
As the further improvement of an embodiment of the present invention, M=2；It is described " to control the solenoid valve increase and distribute to
The amount of the refrigerant of one evaporator " specifically includes: the amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase is controlled,
And stop distributing refrigerant to the second evaporator, wherein the second evaporator is used to provide cooling capacity to the second storage compartment.
As the further improvement of an embodiment of the present invention, two evaporators are communicated to compressor by threeway.
As the further improvement of an embodiment of the present invention, the control module is MCU module.
The embodiment of the invention also provides a kind of methods of distribution refrigerant for multi-cycle refrigerator, including following step
It is rapid: in process of refrigerastion, within a preset period of time, to obtain depreciation and the second storage compartment at a first temperature of the first storage compartment
Second temperature drop-out value；The difference between depreciation and second temperature drop-out value is less than default difference threshold values at the first temperature
When, increase the amount for distributing to the refrigerant of the first evaporator, wherein the first evaporator is used to provide to the first storage compartment cold
Amount, the default difference threshold values is less than zero.
Compared with the existing technology, the technical effects of the invention are that: the embodiment of the present invention provides a kind of multi-cycle refrigerator, should
In the refrigerator, when the refrigerating speed that one stores compartment is too low, the refrigeration that the evaporator is distributed in solenoid valve increase can be controlled
The amount of agent, wherein the evaporator provides cooling capacity for the storage compartment, presets difference threshold values less than zero.So as to balancedly
Refrigerant is distributed to each evaporator.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the refrigeration system in the embodiment of the present invention；
Fig. 2 is the flow diagram of the method for the distribution refrigerant in the embodiment of the present invention two；
Fig. 3 is the flow diagram of the method for the distribution refrigerant in the embodiment of the present invention three.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to various embodiments shown in the accompanying drawings.But these embodiments are not
The limitation present invention, structure that those skilled in the art are made according to these embodiments, method or change functionally
It changes and is included within the scope of protection of the present invention.
The term of the representation space relative position used herein such as "upper", " top ", "lower", " lower section " is for just
A unit as shown in the drawings or feature are described relative to another unit or the relationship of feature in the purpose of explanation.It is empty
Between the term of relative position can be intended to include different direction of the equipment in use or work other than orientation as shown in the figure.
For example, the unit for being described as being located at other units or feature " below " or " under " will if the equipment in figure overturn
Positioned at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both orientation.If
It is standby to be otherwise directed (be rotated by 90 ° or other directions), and be interpreted accordingly used herein with space correlation
Language is described.
Also, it should be understood that although term first, second etc. can be used to describe herein various elements or
Structure, but these are described object and should not be limited by these terms.These terms are only used to by these description objects that
This is distinguished.For example, the first storage compartment can be referred to as the second storage compartment, and similarly the second storage compartment can also be with
Referred to as first storage compartment, this protection scope without departing from the application.
The embodiment of the invention provides a kind of multi-cycle refrigerators, as shown in Figure 1, comprising:
M storage compartment (not shown), control module (not shown) and the refrigeration system that compartment offer cooling capacity is provided to M
System, wherein M is the integer more than or equal to two；Here, storage compartment can be refrigerating chamber, freezing chamber or temperature-changing chamber etc..
The refrigeration system includes at least solenoid valve 4 and M evaporator 6, and the solenoid valve 4 is for distributing to refrigerant
M evaporator 6, and each evaporator 6 provides cooling capacity to unique storage compartment；Here, each evaporator 6 is uniquely corresponding
Cooling capacity is provided to a storage compartment, and to the unique storage compartment, which can be by direct-cooled mode to storage
Compartment provides cooling capacity, can also provide cooling capacity to storage compartment by air-cooled mode.
In process of refrigerastion, within a preset period of time, when determine the first storage compartment temperature drop-out value and second storage between
When difference between the temperature drop-out value of room is less than default difference threshold values, the control module controls the increase point of solenoid valve 4
The amount of the refrigerant of the first evaporator of dispensing, wherein the first evaporator is used to provide cooling capacity to the first storage compartment, described default
Difference threshold values is less than zero.Here, the first storage compartment and the second storage compartment are different storage compartment.
Here, Fig. 1 shows the structure and working principle of the refrigeration system, as shown by arrows, the refrigeration of the refrigeration system
Process are as follows: compressor 1 can be by the refrigerant compression of the low pressure flowed into from M evaporator 6 at the refrigerant of high temperature and pressure, refrigeration
Agent enters condenser 2 by the exhaust outlet of compressor 1, and refrigerant is condensed into the refrigerant pressed in high temperature in condenser 2；High temperature
The refrigerant of middle pressure enters solenoid valve 4 after the filtering of device for drying and filtering 3, and refrigerant is distributed to M capillary by solenoid valve 4
5 (each capillary 5 is connected with unique evaporator 6), after 5 reducing pressure by regulating flow of capillary by buckling in high temperature be low-temp low-pressure；
The refrigerant of low-temp low-pressure largely absorbs the heat in storage compartment in evaporator 6 and gasifies as saturated vapor, to realize
Refrigeration subsequently becomes the refrigerant of low pressure, then is sucked by compressor 1 and maintain circulation.Here, in Fig. 1, M is equal to 2, Ke Yili
Solution, this is only an example, and in practice, the value of M can adjust according to the actual situation.
Here, control module can be a hardware module, software module or the module of soft or hard combination, for example, MCU
(Microcontroller Unit, micro-control unit) etc..
Here it is possible to be both provided with the temperature sensing for obtaining the temperature value in storage compartment in each storage compartment
Device, at the beginning of the preset time period and finish time respectively obtains the temperature value in a storage compartment, then
Obtain the temperature drop-out value in the storage compartment.Assuming that being T1 at the beginning of the preset time period, finish time T2 then exists
It is Temp1 in the temperature that the T1 moment obtains when multi-cycle refrigeration for refrigerator, is Temp2 in the temperature that the T2 moment obtains, in fact it could happen that
Following situations: if (1) within T1-T2 this period, user does not store article into storage compartment, then Temp1 > Temp2,
Then temperature drop-out value Temp1-Temp2 > 0；(2) if within T1-T2 this period, user stores article into storage compartment,
Then it is possible that Temp1 < Temp2, then temperature drop-out value Temp1-Temp2 < 0；It is understood that in above-mentioned two situations,
If the temperature drop-out value-the second of the first storage compartment stores temperature drop-out value < 0 of compartment, then it represents that the first storage compartment
The speed of temperature decline is slow, that is, the amount for distributing to the refrigerant of the first evaporator is fewer, therefore, can be to the first evaporation
Device overabsorption refrigerant.
Optionally, solenoid valve M can lead to control valve, or the control valve gone out for one into M for M+1.
Preferably, when the temperature for determining the second storage compartment is less than or equal to preset temperature value, the control module control
The solenoid valve 4 stops distributing refrigerant to the second evaporator, wherein the second evaporator is used to provide to the second storage compartment cold
Amount.Here, each storage compartment has its preset temperature value, when storing compartment less than or equal to preset temperature value, will stop
Freeze to the storage compartment, conversely, then freezing to the storage compartment.In practice, the preset temperature value of freezing chamber is usual
For some value (for example, -18 DEG C, -24 DEG C etc.) in -4 DEG C~-24 DEG C, the preset temperature value of refrigerating chamber is usually 3 DEG C~10 DEG C
In some value.It is understood that after stopping providing refrigerant to the second storage compartment, it can be between others storage
Room provides refrigerant more.
Preferably, the refrigeration system further include: M capillary 5, the compressor 1 being sequentially connected in series, condenser 2 and drying
Filter 3；The solenoid valve 4 is connected to the device for drying and filtering 3, and the first end of each evaporator 6 passes through unique capillary
Pipe 5 is connected to the solenoid valve 4, and the second end of each evaporator 6 is connected to the compressor 1.Here, the second of M evaporator 6
End can be connected to compressor 1 by a M+1 pipe fitting.
Preferably, described " control the solenoid valve 4 and increase the amount for distributing to the refrigerant of the first evaporator " specifically includes:
It controls the solenoid valve 4 and increases the amount for distributing to the refrigerant of the first evaporator, and the absolute value of the difference is bigger, the amount
It is bigger.Here, when the absolute value of difference is bigger, then it represents that the refrigeration performance of the first storage compartment is poorer, and therefore, it is necessary to the
The amount for the refrigerant that one storage compartment provides more is also more.
Preferably, described " control the solenoid valve 4 and increase the amount for distributing to the refrigerant of the first evaporator " specifically includes:
It controls the solenoid valve 4 and increases the amount for distributing to the refrigerant of the first evaporator, control the reduction of solenoid valve 4 and distribute to second
The amount of the refrigerant of evaporator, wherein the second evaporator is used to provide cooling capacity to the second storage compartment.Here, when the first storage
When difference between the temperature drop-out value of compartment and the temperature drop-out value of the second storage compartment is less than default difference threshold values, it can recognize
Cooling rate for the first evaporator is excessively slow, and the cooling rate of the second evaporator is too fast, therefore, can be with multidirectional first evaporator
Refrigerant is provided, it is few to provide refrigerant to the second evaporator, to reduce difference of first, second evaporator between cooling rate
Not.Optionally, here, increase the amount for distributing to the refrigerant of the first evaporator, specifically include: solenoid valve 4 is provided with M and goes out
Mouthful, each outlet is connected to unique evaporator, is both provided with valve in each outlet, which, which can adjust outflow, to go out
Mouthful refrigerant speed, it is therefore, adjustable with first when needing to increase the amount for the refrigerant for distributing to the first evaporator
The valve for the outlet that evaporator is connected, to improve the speed for flowing out the refrigerant of the outlet.
Preferably, it is Δ V that the amount of the refrigerant of the first evaporator is distributed in increase, reduces the system for distributing to the second evaporator
The amount of cryogen is Δ V.
Preferably, M=2；Described " control the solenoid valve 4 and increase the amount for distributing to the refrigerant of the first evaporator " is specific
It include: that the control solenoid valve 4 increases the amount for distributing to the refrigerant of the first evaporator, and stops to the second evaporator assignment system
Cryogen, wherein the second evaporator is used to provide cooling capacity to the second storage compartment.
Preferably, two evaporators 6 are communicated to compressor 1 by threeway 7.
Preferably, the control module is MCU module.
Second embodiment of the present invention provides a kind of methods of distribution refrigerant for multi-cycle refrigerator, as shown in Fig. 2, packet
Include following steps:
Step 201: in process of refrigerastion, within a preset period of time, obtaining depreciation at a first temperature of the first storage compartment
With the second temperature drop-out value of the second storage compartment；
Step 202: when the difference between depreciation and second temperature drop-out value is less than default difference threshold values at the first temperature,
Increase the amount for distributing to the refrigerant of the first evaporator, wherein the first evaporator is used to provide cooling capacity, institute to the first storage compartment
Default difference threshold values is stated less than zero.
The embodiment of the present invention three provides a kind of method of distribution refrigerant for Two-way Cycle refrigerator, as shown in figure 3, packet
Include following steps:
Step 301: Two-way Cycle refrigerator powers on, at this point, the refrigeration system in the Two-way Cycle refrigerator is started to work；
Step 302: according to predetermined manner, refrigeration system continues to the first storage compartment and the second storage compartment refrigeration
One hour；
Step 303: depreciation Δ T1 at a first temperature of the first storage compartment is obtained, at a first temperature of the first storage compartment
Depreciation Δ T2；
Step 304: judgement | Δ T1- Δ T2 | >=4 DEG C, if set up, 305 are thened follow the steps, otherwise, executes step 309；
Step 305: judgement " the preset temperature value AND Δ T2 > first of Δ T1 > first preset temperature value " is held if set up
Otherwise row step 306 executes step 309；
Step 306: judging Δ T1 > Δ T2, if set up, then follow the steps 307, otherwise, execute step 308；
Step 307: Δ T1 > Δ T2 is set up, then it represents that the cooling rate of the first storage compartment is too fast, and therefore, it is necessary to stop
Refrigerant is provided to the first storage compartment, executes step 310 later；
Step 308: Δ T1 > Δ T2 is invalid, then it represents that the cooling rate of the second storage compartment is too fast, and therefore, it is necessary to stop
Refrigerant only is provided to the second storage compartment, executes step 311 later；
Step 309: freezing according to normal mode to refrigerator, and after a period of time of freezing, execute step
303；
Step 310: judging the preset temperature value of T2 >=second? if set up, then it represents that, the temperature of the second storage compartment is not
Have and reaches preset requirement；, whereas if invalid, then it represents that, the temperature of the second storage compartment reaches preset requirement；Wherein T2 is
The temperature of second storage compartment；If set up, 303 are thened follow the steps, otherwise, executes step 309；
Step 311: judging the preset temperature value of T1 >=first? if set up, then it represents that, the temperature of the first storage compartment is not
Have and reaches preset requirement；, whereas if invalid, then it represents that, the temperature of the first storage compartment reaches preset requirement；Wherein T1 is
The temperature of first storage compartment；If set up, 303 are thened follow the steps, otherwise, executes step 309.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of multi-cycle refrigerator characterized by comprising
M storage compartment, control module and to M store compartment provide cooling capacity refrigeration system, wherein M for more than or equal to
Two integer；
The refrigeration system includes at least solenoid valve and M evaporator, and the solenoid valve is used to refrigerant distributing to M evaporation
Device, and each evaporator provides cooling capacity to unique storage compartment；
In process of refrigerastion, within a preset period of time, when determining the first storage compartment temperature drop-out value and the second storage compartment
When difference between temperature drop-out value is less than default difference threshold values, the control module controls the solenoid valve increase and distributes to the
The amount of the refrigerant of one evaporator, wherein the first evaporator is used to provide cooling capacity, the default difference valve to the first storage compartment
Value is less than zero.
2. multi-cycle refrigerator according to claim 1, it is characterised in that:
When the temperature for determining the second storage compartment is less than or equal to preset temperature value, the control module controls the solenoid valve and stops
Refrigerant only is distributed to the second evaporator, wherein the second evaporator is used to provide cooling capacity to the second storage compartment.
3. multi-cycle refrigerator according to claim 1, it is characterised in that:
The refrigeration system further include: M capillary, the compressor being sequentially connected in series, condenser and device for drying and filtering；The electromagnetism
Valve is connected to the device for drying and filtering, and the first end of each evaporator passes through unique capillary and is connected to the solenoid valve, often
The second end of a evaporator is connected to the compressor.
4. multi-cycle refrigerator according to claim 1, which is characterized in that described " to control the solenoid valve increase to distribute to
The amount of the refrigerant of first evaporator " specifically includes:
The amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase is controlled, and the absolute value of the difference is bigger, institute
The amount of stating is bigger.
5. multi-cycle refrigerator according to claim 1, which is characterized in that described " to control the solenoid valve increase to distribute to
The amount of the refrigerant of first evaporator " specifically includes:
The amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase is controlled, solenoid valve reduction is controlled and distributes to the
The amount of the refrigerant of two evaporators, wherein the second evaporator is used to provide cooling capacity to the second storage compartment.
6. multi-cycle refrigerator according to claim 5, which is characterized in that
The amount that the refrigerant of the first evaporator is distributed in increase is Δ V, and the amount for reducing the refrigerant for distributing to the second evaporator is
ΔV。
7. multi-cycle refrigerator according to claim 1, it is characterised in that:
M=2；
" the controlling the amount that the refrigerant of the first evaporator is distributed in the solenoid valve increase " specifically includes: controlling the electromagnetism
The amount of the refrigerant of the first evaporator is distributed in valve increase, and stops distributing refrigerant to the second evaporator, wherein the second evaporation
Device is used to provide cooling capacity to the second storage compartment.
8. multi-cycle refrigerator according to claim 7, it is characterised in that:
Two evaporators are communicated to compressor by threeway.
9. multi-cycle refrigerator according to claim 1, it is characterised in that:
The control module is MCU module.
10. a kind of method of the distribution refrigerant for multi-cycle refrigerator, which comprises the following steps:
In process of refrigerastion, within a preset period of time, at a first temperature of acquisition the first storage compartment between depreciation and the second storage
The second temperature drop-out value of room；
When the difference between depreciation and second temperature drop-out value is less than default difference threshold values at the first temperature, increase distributes to the
The amount of the refrigerant of one evaporator, wherein the first evaporator is used to provide cooling capacity, the default difference valve to the first storage compartment
Value is less than zero.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141463.2A CN109883109A (en) | 2019-02-26 | 2019-02-26 | Multi-cycle refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141463.2A CN109883109A (en) | 2019-02-26 | 2019-02-26 | Multi-cycle refrigerator |
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| CN109883109A true CN109883109A (en) | 2019-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665252A (en) * | 2020-12-28 | 2021-04-16 | 江苏拓米洛环境试验设备有限公司 | Temperature fluctuation control method and device of refrigeration system and refrigeration system |
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| CN108759247A (en) * | 2018-07-20 | 2018-11-06 | 海信（山东）冰箱有限公司 | A kind of dual system wind cooling refrigerator and its refrigeration control method with deep cooling function |
| CN108955033A (en) * | 2018-08-10 | 2018-12-07 | 长虹美菱股份有限公司 | A kind of refrigerator refrigeration system and its control method |
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