CN105135731A - Refrigerating system, refrigerating plant and temperature control method of refrigerating plant - Google Patents
Refrigerating system, refrigerating plant and temperature control method of refrigerating plant Download PDFInfo
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- CN105135731A CN105135731A CN201510594628.3A CN201510594628A CN105135731A CN 105135731 A CN105135731 A CN 105135731A CN 201510594628 A CN201510594628 A CN 201510594628A CN 105135731 A CN105135731 A CN 105135731A
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Abstract
Provided are a refrigerating system, a refrigerating plant and a temperature control method of the refrigerating plant. The refrigerating system comprises a refrigerating circulation loop which is formed by connecting a compressor, a condenser, a first capillary, a first evaporator and a second evaporator in sequence through refrigerating pipelines, and the refrigerating system further comprises a first three-way valve which is connected between the condenser and the first capillary, a first one-way valve and a second three-way valve which are connected between the first evaporator and the second evaporator and a second one-way valve which is connected between the second evaporator and the compressor; the first one-way valve and the second three-way valve are close to the first evaporator and the second evaporator respectively; two outlets of the first three-way valve are connected with the first capillary and a second capillary respectively, and the other end of the second capillary is connected between the first one-way valve and the second three-way valve; one outlet of the second three-way valve is connected between the second one-way valve and the compressor; the other outlet of the second three-way valve is connected to the second evaporator. By means of the refrigerating system, switching of three refrigerating modes can be achieved.
Description
Technical field
The present invention relates to a kind of refrigeration system, particularly relate to a kind of realize three kinds of refrigeration modes refrigeration system, there is the refrigerating plant of this refrigeration system and the temperature-controlled process of refrigerating plant thereof.
Background technology
Relative to single temperature refrigerator, it is accurate that two-storage temperature refrigerator has temperature control, the advantage that refrigerating chamber humidity is high.Realize the method that refrigerating chamber and temperature of refrigerating chamber independently control at present to comprise: (1) bypass Two-way Cycle, flow of refrigerant is when refrigeration evaporator, flow through refrigerating evaporator simultaneously, the evaporating temperature of refrigerating chamber is determined by refrigerating chamber, in this circulation, refrigerator evaporator temperature is low, heat transfer temperature difference is large, causes irreversible loss larger; The compression ratio of compressor is high simultaneously, causes energy consumption larger.(2) double-compressor circulation, although can, to refrigerating chamber and refrigerating chamber accurate temperature controlling respectively, owing to needing two cover refrigeration systems simultaneously, cause cost very high; The refrigerating capacity of two other compressor is all less, and the low energy consumption that causes of compression efficiency is larger.(3) Two-way Cycle in parallel, when two evaporimeters work simultaneously, two evaporimeters shunt part of refrigerant respectively, and refrigerating speed is slow.
In view of this, be necessary to be improved the temperature-controlled process of existing refrigeration system, refrigerating plant and refrigerating plant thereof, to solve the problem.
Summary of the invention
The object of the present invention is to provide a kind of realize three kinds of refrigeration modes refrigeration system, there is the refrigerating plant of this refrigeration system and the temperature-controlled process of refrigerating plant thereof.
For achieving the above object, the invention provides a kind of refrigeration system, comprise compressor, refrigeration cycle that condenser, the first capillary, the first evaporimeter, the second evaporimeter are connected to form by refrigeration piping, described refrigeration system also comprises and is connected to described condenser and described first intercapillary first triple valve, is connected to the first check valve between the first evaporimeter and the second evaporimeter and the second triple valve, is connected to the second check valve between the second evaporimeter and compressor; First check valve and the second triple valve are close to the first evaporimeter and the second evaporimeter respectively; Two outlets of described first triple valve are connected with the first capillary, the second capillary respectively, and the other end of the second capillary is connected between the first check valve and the second triple valve; An outlet of the second triple valve is connected between the second check valve and compressor; Another outlet of second triple valve is connected to the second evaporimeter.
As a further improvement on the present invention, the first capillary is identical with the internal diameter of the second capillary, and the length of the first capillary is greater than the length of the second capillary.
As a further improvement on the present invention, described refrigeration system also comprises the device for drying and filtering be connected between described condenser and the first triple valve.
As a further improvement on the present invention, described refrigeration system also comprises regenerator, and the refrigeration pipe between described condenser and the first triple valve and the refrigeration pipe between the second check valve and compressor all carry out heat exchange through described regenerator.
As a further improvement on the present invention, described refrigeration system also comprises the reservoir be connected between the second check valve and described compressor.
For achieving the above object, present invention also offers a kind of refrigerating plant, comprise the first refrigeration compartment, the second refrigeration compartment, provide the refrigeration system of cold to described first refrigeration compartment and the second refrigeration compartment, the first evaporimeter and the second evaporimeter provide cold to respectively the first refrigeration compartment and the second refrigeration compartment; Described refrigerating plant also comprises and controls the controller that described compressor start-stop, the first triple valve and the second triple valve switch outlet, and is electrically connected with described controller and is respectively used to detection first refrigeration compartment and other first temperature sensor of the second refrigeration compartment, the second temperature sensor.
For achieving the above object, present invention also offers a kind of temperature-controlled process of refrigerating plant: when the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor start, the first evaporimeter and the second evaporimeter work simultaneously; When the first refrigeration compartment temperature higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, the first evaporator operation, the second evaporimeter does not work; When the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, the first evaporimeter does not work, the second evaporator operation.
As a further improvement on the present invention, when the temperature of the first refrigeration compartment is higher than upper limit during design temperature higher than the second refrigeration compartment of the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor start, the first capillary connected by first triple valve, and the second evaporimeter connected by the second triple valve.
As a further improvement on the present invention, when the first refrigeration compartment temperature higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, compressor start, the first capillary connected by first triple valve, and the path in parallel with described second evaporimeter connected by the second triple valve.
As a further improvement on the present invention, when the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor start, the second capillary connected by first triple valve, and the second evaporimeter connected by the second triple valve
The invention has the beneficial effects as follows: refrigeration system of the present invention can realize the first evaporimeter separate refrigeration, the second evaporimeter separate refrigeration, the first evaporimeter and the second evaporimeter by the first triple valve and the second triple valve and to freeze three kinds of refrigeration modes simultaneously, make two warm refrigerating plant temperature control accurate.In addition, the path controlling cold-producing medium by the first triple valve and the second triple valve can realize the switching of bypass Two-way Cycle and Two-way Cycle in parallel two kinds of modes, the advantage of comprehensive various refrigeration system, has the advantages such as cooling rate is fast, temperature fluctuation is little, temperature control is more accurate, reduction energy consumption.
Accompanying drawing explanation
Fig. 1 is the control circuit figure of refrigeration system of the present invention and controller.
Fig. 2 is the first refrigeration compartment and the second refrigeration compartment schematic diagram when simultaneously freezing.
Schematic diagram when Fig. 3 is the first refrigeration compartment separate refrigeration.
Schematic diagram when Fig. 4 is the second refrigeration compartment separate refrigeration.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearly, describe the present invention below in conjunction with the drawings and specific embodiments.
Refer to shown in Fig. 1 ~ Fig. 4, the invention provides a kind of refrigerating plant (not shown), comprise the first refrigeration compartment, the second refrigeration compartment, provide the refrigeration system 1 of cold and the accurate controller 3 controlling the temperature of described first refrigeration compartment and the second refrigeration compartment to described first refrigeration compartment and the second refrigeration compartment.
Refer to shown in Fig. 1, described refrigeration system 1 comprises compressor 11, condenser 12, first capillary 13, the refrigeration cycle that provides the first evaporimeter 14 of cold to the first refrigeration compartment, provide the second evaporimeter 15 of cold to be connected to form along refrigerant flow direction by refrigeration piping to the second refrigeration compartment; Described refrigeration system 1 also comprises the second capillary being connected to the first triple valve 16 between described condenser 12 and described first capillary 13, being connected to the first check valve 17 between the first evaporimeter 14 and the second evaporimeter 15 and the second triple valve 18, being connected to the second check valve 19 between the second evaporimeter 15 and compressor 11 and being arranged in parallel with described first capillary 13 by the first triple valve 16; First check valve 17 and the second triple valve 18 are close to the first evaporimeter 14 and the second evaporimeter 15 respectively; Described first triple valve 16 have be connected with the first capillary 13, second capillary 20 respectively first export and second to export, the other end of the second capillary 20 is connected between the first check valve 17 and the second triple valve 18; Second triple valve 18 has the 3rd outlet and the 4th outlet, and the 3rd outlet is connected between the second check valve 19 and compressor 11; 4th outlet is connected to the second evaporimeter 15.
This refrigeration system 1 gives described first evaporimeter 14, second evaporimeter 15 bypass in parallel by the first triple valve 16 and the second triple valve 18 respectively, and then to switch by the outlet of the first triple valve 16 and the second triple valve 18 and can realize the first evaporimeter 14 separate refrigeration, the second evaporimeter 15 separate refrigeration, the first evaporimeter 14 and the second evaporimeter 15 and freeze three kinds of refrigeration modes simultaneously, make pair warm refrigerating plant temperature control accurate.In addition, the path controlling cold-producing medium by the first triple valve 16 and the second triple valve 18 can realize the switching of bypass Two-way Cycle and Two-way Cycle in parallel two kinds of modes, the advantage of comprehensive various refrigeration system 1, has the advantages such as cooling rate is fast, temperature fluctuation is little, temperature control is more accurate, reduction energy consumption.
First capillary 13 is identical with the second capillary 20 internal diameter, but the length of the first capillary 13 is greater than the length of the second capillary 20, makes the temperature of the first refrigeration compartment lower than the temperature of the second refrigeration compartment.
Further, described refrigeration system 1 reservoir 23 that also comprises regenerator 21, be connected to the device for drying and filtering 22 between described condenser 12 and the first triple valve 16 and be connected between the second check valve 19 and described compressor 11.Refrigeration pipe between described condenser 12 and the first triple valve 16 and the refrigeration pipe between the second check valve 19 and compressor 11 all carry out heat exchange through described regenerator 21, and then improve refrigerating efficiency.
Be the circuit connection diagram of controller 3 as shown in phantom in Figure 1.Described refrigerating plant also comprises and controls the controller 3 that described compressor 11 start-stop, the first triple valve 16 and the second triple valve 18 switch outlet, and is electrically connected with described controller 3 and is respectively used to detection first refrigeration compartment and other the first temperature sensor 31, second temperature sensor 32 of the second refrigeration compartment.The outlet that described controller 3 controls the start-stop of compressor 11, the first triple valve 16 and the second triple valve 18 according to the temperature of the first refrigeration compartment and the second refrigeration compartment switches.
On the wall that first temperature sensor 31, second temperature sensor 32 can be located at the first evaporimeter 14, second evaporimeter 15 or be located at the first refrigeration compartment and the second refrigeration chamber.
Refer to shown in Fig. 2 ~ Fig. 4, for convenience, in figure, eliminate the reservoir 23 of controller 3 and control circuit schematic diagram and this refrigerating plant.Temperature-controlled process is specially: when just start or the temperature of the first refrigeration compartment higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment higher than on the design temperature of the second refrigeration compartment in limited time, first refrigeration compartment and the second refrigeration compartment need refrigeration simultaneously, compressor 11 starts, and the first evaporimeter 14 and the second evaporimeter 15 work simultaneously; When the first refrigeration compartment temperature higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, the first evaporimeter 14 works, and the second evaporimeter 15 does not work; When the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, the first evaporimeter 14 does not work, and the second evaporimeter 15 works; When the first refrigeration compartment temperature lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, compressor 11 is shut down.
Refer to and Figure 2 shows that the first refrigeration compartment and the second refrigeration compartment are freezed schematic diagram simultaneously, particularly, when the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor 11 starts, first triple valve 16 is connected the first capillary 13, second triple valve 18 and is connected the second evaporimeter 15.Now, the first evaporimeter 14 is connected with the second evaporimeter 15, and cold-producing medium is without shunting, and refrigerating speed is fast, and compressor 11 is born little; The second evaporimeter 15 is flowed through again because condensing agent first flows through the first evaporimeter 14, therefore the second evaporimeter 15 temperature is higher than the first evaporimeter 14 temperature, between second evaporimeter 15 cold-producing medium and the second refrigeration chamber air, heat transfer temperature difference is less, decrease the irreversible loss in diabatic process, reduce the pressure ratio of compressor 11 simultaneously, decrease energy consumption.
Certainly, all cooling is needed in the first refrigeration compartment and the second refrigeration compartment, and user is when needing the second refrigeration compartment fast-refrigerating, the first triple valve 16 also can connect the first capillary 13 simultaneously and the second evaporimeter 15 connected by the second capillary 20, second triple valve 18; Some refrigerant directly enters the second evaporimeter 15 without the first evaporimeter 14, the second refrigeration compartment can be made to lower the temperature rapidly, meet the demand of client.
Refer to and Figure 3 shows that the first refrigeration compartment separate refrigeration schematic diagram, when the first refrigeration compartment temperature higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, compressor 11 starts, first triple valve 16 is connected the first capillary 13, second triple valve 18 and is connected the path in parallel with described second evaporimeter 15.
Refer to and Figure 4 shows that the second refrigeration compartment separate refrigeration schematic diagram, when the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor 11 starts, first triple valve 16 is connected the second capillary 20, second triple valve 18 and is connected the second evaporimeter 15.
In sum, refrigeration system 1 of the present invention can realize the first evaporimeter 14 separate refrigeration, the second evaporimeter 15 separate refrigeration, the first evaporimeter 14 and the second evaporimeter 15 by the first triple valve 16 and the second triple valve 18 and to freeze three kinds of refrigeration modes simultaneously, makes two warm refrigerating plant temperature control accurate.In addition, the path controlling cold-producing medium by the first triple valve 16 and the second triple valve 18 can realize the switching of bypass Two-way Cycle and Two-way Cycle in parallel two kinds of modes, the advantage of comprehensive various refrigeration system 1, has the advantages such as cooling rate is fast, temperature fluctuation is little, temperature control is more accurate, reduction energy consumption.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a refrigeration system, comprise compressor, refrigeration cycle that condenser, the first capillary, the first evaporimeter, the second evaporimeter are connected to form by refrigeration piping, it is characterized in that: described refrigeration system also comprises and is connected to described condenser and described first intercapillary first triple valve, is connected to the first check valve between the first evaporimeter and the second evaporimeter and the second triple valve, is connected to the second check valve between the second evaporimeter and compressor; First check valve and the second triple valve are respectively near the first evaporimeter and the second evaporimeter; Two outlets of described first triple valve are connected with the first capillary, the second capillary respectively, and the other end of the second capillary is connected between the first check valve and the second triple valve; An outlet of the second triple valve is connected between the second check valve and compressor; Another outlet of second triple valve is connected to the second evaporimeter.
2. refrigerating plant according to claim 1, is characterized in that: the first capillary is identical with the internal diameter of the second capillary, and the length of the first capillary is greater than the length of the second capillary.
3. refrigerating plant according to claim 1, is characterized in that: described refrigeration system also comprises the device for drying and filtering be connected between described condenser and the first triple valve.
4. refrigerating plant according to claim 1, it is characterized in that: described refrigeration system also comprises regenerator, the refrigeration pipe between described condenser and the first triple valve and the refrigeration pipe between the second check valve and compressor all carry out heat exchange through described regenerator.
5. refrigerating plant according to claim 1, is characterized in that: described refrigeration system also comprises the reservoir be connected between the second check valve and described compressor.
6. a refrigerating plant, comprise the first refrigeration compartment, the second refrigeration compartment, the refrigeration system of cold is provided to described first refrigeration compartment and the second refrigeration compartment, it is characterized in that: described refrigeration system is the refrigeration system in claim 1 ~ 5 described in any one, the first evaporimeter and the second evaporimeter provide cold to respectively the first refrigeration compartment and the second refrigeration compartment; Described refrigerating plant also comprises and controls the controller that described compressor start-stop, the first triple valve and the second triple valve switch outlet, and is electrically connected with described controller and is respectively used to detection first refrigeration compartment and other first temperature sensor of the second refrigeration compartment, the second temperature sensor.
7., for a temperature-controlled process for refrigerating plant as claimed in claim 6, it is characterized in that:
When the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor start, the first evaporimeter and the second evaporimeter work simultaneously.
When the first refrigeration compartment temperature higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, the first evaporator operation, the second evaporimeter does not work.
When the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, the first evaporimeter does not work, the second evaporator operation.
8. the temperature-controlled process of refrigerating plant according to claim 7, it is characterized in that: when the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor start, the first capillary connected by first triple valve, and the second evaporimeter connected by the second triple valve.
9. the temperature-controlled process of refrigerating plant according to claim 7, it is characterized in that: when the first refrigeration compartment temperature higher than the design temperature upper limit of the first refrigeration compartment, the temperature of the second refrigeration compartment lower than the design temperature of the second refrigeration compartment under in limited time, compressor start, the first capillary connected by first triple valve, and the path in parallel with described second evaporimeter connected by the second triple valve.
10. the temperature-controlled process of refrigerating plant according to claim 7, it is characterized in that: when the temperature of the first refrigeration compartment is prescribed a time limit higher than on the design temperature of the second refrigeration compartment lower than the design temperature lower limit of the first refrigeration compartment, the temperature of the second refrigeration compartment, compressor start, the second capillary connected by first triple valve, and the second evaporimeter connected by the second triple valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510594628.3A CN105135731A (en) | 2015-09-17 | 2015-09-17 | Refrigerating system, refrigerating plant and temperature control method of refrigerating plant |
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| CN201510594628.3A CN105135731A (en) | 2015-09-17 | 2015-09-17 | Refrigerating system, refrigerating plant and temperature control method of refrigerating plant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674402A (en) * | 2016-03-23 | 2016-06-15 | 广东美的暖通设备有限公司 | Multiple-on-line system and mode switching control method thereof |
| CN108131856A (en) * | 2018-01-29 | 2018-06-08 | 合肥美菱股份有限公司 | A kind of refrigerator refrigeration system and refrigerator |
| CN112944775A (en) * | 2021-02-10 | 2021-06-11 | 西安交通大学 | Low-temperature refrigerator |
| CN113606806A (en) * | 2021-08-26 | 2021-11-05 | 中山市凯腾电器有限公司 | Double-temperature refrigeration system and operation control method thereof |
| CN113834257A (en) * | 2021-08-31 | 2021-12-24 | 青岛海尔电冰箱有限公司 | Refrigerating system for refrigerating and freezing device and refrigerating and freezing device with refrigerating and freezing system |
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| CN101113847A (en) * | 2006-07-28 | 2008-01-30 | 泰州乐金电子冷机有限公司 | Freezing circulating of refrigerator |
| JP2008261513A (en) * | 2007-04-10 | 2008-10-30 | Denso Corp | Refrigerating cycle device |
| CN103175327A (en) * | 2013-03-14 | 2013-06-26 | 西安交通大学 | Large freezing ability energy-saving refrigerating system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020069654A1 (en) * | 2000-12-12 | 2002-06-13 | Takashi Doi | Two-evaporator refrigerator having a bypass and channel-switching means for refrigerant |
| CN101113847A (en) * | 2006-07-28 | 2008-01-30 | 泰州乐金电子冷机有限公司 | Freezing circulating of refrigerator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674402A (en) * | 2016-03-23 | 2016-06-15 | 广东美的暖通设备有限公司 | Multiple-on-line system and mode switching control method thereof |
| CN105674402B (en) * | 2016-03-23 | 2018-10-16 | 广东美的暖通设备有限公司 | Multi-line system and its mode switch control method |
| CN108131856A (en) * | 2018-01-29 | 2018-06-08 | 合肥美菱股份有限公司 | A kind of refrigerator refrigeration system and refrigerator |
| CN112944775A (en) * | 2021-02-10 | 2021-06-11 | 西安交通大学 | Low-temperature refrigerator |
| CN113606806A (en) * | 2021-08-26 | 2021-11-05 | 中山市凯腾电器有限公司 | Double-temperature refrigeration system and operation control method thereof |
| CN113834257A (en) * | 2021-08-31 | 2021-12-24 | 青岛海尔电冰箱有限公司 | Refrigerating system for refrigerating and freezing device and refrigerating and freezing device with refrigerating and freezing system |
| WO2023029522A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔电冰箱有限公司 | Refrigeration system for refrigerating and freezing device, and refrigerating and freezing device having same |
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Application publication date: 20151209 |