CN110789300A - Refrigerating unit with double evaporators, regulation and control method and new energy refrigerator car - Google Patents
Refrigerating unit with double evaporators, regulation and control method and new energy refrigerator car Download PDFInfo
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- CN110789300A CN110789300A CN201911128424.5A CN201911128424A CN110789300A CN 110789300 A CN110789300 A CN 110789300A CN 201911128424 A CN201911128424 A CN 201911128424A CN 110789300 A CN110789300 A CN 110789300A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims abstract description 22
- 230000001276 controlling effect Effects 0.000 claims description 25
- 238000005057 refrigeration Methods 0.000 claims description 25
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 18
- 239000003507 refrigerant Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerating unit with double evaporators, a regulation and control method and a new energy refrigerator car. Wherein, this refrigerating unit includes: the air conditioner comprises a compressor, an oil separator, a condenser, a liquid storage device and a drying filter which are sequentially connected, wherein the outlet end of the drying filter is respectively connected with the inlet end of a first evaporator positioned in a cab and the inlet end of a second evaporator positioned in a refrigerating chamber; a first electromagnetic valve and a first thermostatic expansion valve are arranged between the outlet end of the drying filter and the inlet end of the first evaporator, and a second electromagnetic valve and a second thermostatic expansion valve are arranged between the outlet end of the drying filter and the inlet end of the second evaporator. By the invention, the temperature regulation of the carriage and the cab is realized by using a single compressor and a condenser. Not only the weight of the unit is reduced, but also the volume is reduced, the cost is saved, and the installation is simpler and easier.
Description
Technical Field
The invention relates to the technical field of units, in particular to a refrigerating unit with double evaporators, a regulation and control method and a new energy refrigerator car.
Background
The refrigerating unit of the refrigerator car is used as an important component part of the refrigerator car, and is widely applied, particularly in the field of cold chain logistics.
The power of a refrigerating system of the traditional refrigerator car comes from consumed fuel oil, so that the energy consumption is high, the cost is high, and the environment is polluted. The refrigeration mode is two independent refrigeration systems which respectively provide refrigeration for the carriage and the cab, but the refrigeration mode has large volume, heavy weight and complex installation.
Aiming at the problems of large volume and high cost of a refrigerating system of a refrigerator car in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a refrigerating unit with double evaporators, a regulation and control method and a new energy refrigerator car, and aims to solve the problems that a refrigerating system of the refrigerator car in the prior art is large in size and high in cost.
In order to solve the above technical problem, the present invention provides a refrigerating unit, wherein the refrigerating unit includes: the air conditioner comprises a compressor, an oil separator, a condenser, a liquid storage device and a drying filter which are sequentially connected, wherein the outlet end of the drying filter is respectively connected with the inlet end of a first evaporator positioned in a cab and the inlet end of a second evaporator positioned in a refrigerating chamber; a first electromagnetic valve and a first thermostatic expansion valve are arranged between the outlet end of the drying filter and the inlet end of the first evaporator, and a second electromagnetic valve and a second thermostatic expansion valve are arranged between the outlet end of the drying filter and the inlet end of the second evaporator.
Further, the refrigeration unit further comprises: and the air suction stop valve and the air suction filter are arranged on a pipeline between the outlet end of the first evaporator and the inlet end of the compressor, and the outlet end of the air suction filter is communicated with the inlet end pipeline of the compressor.
Further, the refrigeration unit further comprises: the third electromagnetic valve, the first filter and the oil return capillary are connected in sequence; the inlet end of the first filter is communicated with an outlet end pipeline of the oil separator, and the other outlet end of the oil separator is communicated with a three-dimensional inlet end pipeline of the condenser; the outlet end of the first filter is communicated with the inlet end pipeline of the compressor; the third electromagnetic valve is arranged on a pipeline between the first filter and the oil separator, and the oil return capillary tube is arranged on a pipeline between the first filter and the compressor.
Further, the refrigeration unit further comprises: the second filter, the fourth electromagnetic valve and the liquid spraying capillary are connected in sequence; the inlet end of the second filter is communicated with the outlet end pipeline of the drying filter, and the outlet end of the second filter is communicated with the inlet end pipeline of the compressor; the fourth electromagnetic valve and the liquid spraying capillary tube are arranged on a pipeline between the second filter and the compressor, and the fourth electromagnetic valve is close to the second filter.
Further, the refrigeration unit further comprises: and the liquid supply stop valve is arranged at the outlet end of the drying filter, a pipeline extending from the outlet end of the drying filter is divided into two pipelines after passing through the liquid supply stop valve, one pipeline is connected with the first evaporator, and the other pipeline is connected with the second evaporator.
Further, the refrigeration unit further comprises: and the gas-liquid separator is arranged at the inlet end of the compressor.
The invention also provides a new energy refrigerator car which is characterized by comprising the refrigerating unit.
Further, the power supply of the new energy refrigerator car is provided by a vehicle-mounted battery.
The invention also provides a regulation and control method of the refrigerating unit, which is applied to the refrigerating unit, wherein the method comprises the following steps: monitoring the actual temperature t1 of the compartment and the actual temperature t2 of the cab; comparing the t1 with a first target temperature, the t2 with a second target temperature; and controlling the opening and closing of the first electromagnetic valve and the second electromagnetic valve according to the comparison result.
Further, controlling the opening and closing of the first solenoid valve and the second solenoid valve according to the comparison result includes:
if t1 is not less than the first target temperature and t2 is not less than the second target temperature, controlling the first electromagnetic valve to be opened and the second electromagnetic valve to be opened;
if t1 is not less than the first target temperature and t2 is not less than the second target temperature, controlling the first electromagnetic valve to be closed and the second electromagnetic valve to be opened;
if t1 is less than or equal to a first target temperature and t2 is less than or equal to a second target temperature, controlling the first electromagnetic valve to close and the second electromagnetic valve to close;
and if t1 is less than or equal to the first target temperature and t2 is greater than or equal to the second target temperature, controlling the first electromagnetic valve to be opened and the second electromagnetic valve to be closed.
Further, after controlling the opening and closing of the first solenoid valve and the second solenoid valve according to the comparison result, the method further includes: if t1 is less than or equal to the first target temperature and t2 is less than or equal to the second target temperature, controlling the unit to stop running; in addition, the t1 and the t2 are continuously monitored until the t1 reaches the first target temperature and the t2 reaches the second target temperature, and the unit is controlled to stop running.
The invention further provides a storage medium, wherein a computer program is stored in the storage medium, and the computer program is configured to execute the above regulation and control method when running.
By applying the technical scheme of the invention, the new energy refrigerator car refrigerating unit with double evaporators is provided, and the temperature regulation of a carriage and a cab is realized by utilizing a single compressor and a single condenser. Not only the weight of the unit is reduced, but also the volume is reduced, the cost is saved, and the installation is simpler and easier.
Drawings
FIG. 1 is a schematic block diagram of a refrigeration unit according to an embodiment of the present invention;
fig. 2 is a flow chart of a method for regulating a refrigeration unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a refrigeration unit according to an embodiment of the present invention, as shown in fig. 1, the refrigeration unit includes:
the air conditioner comprises a compressor 1, an oil separator 2, a condenser 3, a liquid accumulator 4 and a drying filter 5 which are sequentially connected, wherein the outlet end of the drying filter 5 is respectively connected with the inlet end of a first evaporator 6 positioned in a cab and the inlet end of a second evaporator 7 positioned in a refrigerating chamber;
a first electromagnetic valve 8 and a first thermal expansion valve 9 are arranged between the outlet end of the drying filter 5 and the inlet end of the first evaporator 6, and a second electromagnetic valve 10 and a second thermal expansion valve 11 are arranged between the outlet end of the drying filter 5 and the inlet end of the second evaporator 7. Wherein the first thermostatic expansion valve 9 is closer to the first evaporator 6 than the first solenoid valve 8; the second thermostatic expansion valve 11 is closer to the second evaporator 7 than the second solenoid valve 10. The first evaporator 6 is provided in the cab, and the second evaporator 10 is provided in the vehicle cabin.
And a suction cutoff valve 12 and a suction filter 13 provided on a pipe between an outlet end of the first evaporator 6 and an inlet end of the compressor 1, an outlet end of the suction filter 13 communicating with an inlet end pipe of the compressor 1.
And the liquid supply stop valve 20 is arranged at the outlet end of the drying filter 5, and a pipeline extending from the outlet end of the drying filter 5 is divided into two pipelines after passing through the liquid supply stop valve 20, wherein one pipeline is connected with the first evaporator 6, and the other pipeline is connected with the second evaporator 7.
When the high-temperature high-pressure liquid circulating system is applied specifically, a refrigerant is compressed by a compressor 1 and then discharges high-temperature high-pressure gas, the high-temperature high-pressure gas passes through an oil separator 2 and then enters a condenser 3, high-temperature high-pressure liquid is discharged, the high-temperature high-pressure liquid passes through a liquid storage device 4 and a drying filter 5 and then is divided into two paths, one path of the high-temperature high-pressure liquid is throttled by a first electromagnetic valve 8 and a first thermostatic expansion valve 9 and then enters a first evaporator 6 in a cab, the other path of the high-temperature high-pressure liquid is throttled by a second electromagnetic valve 10 and a second thermostatic expansion valve 11 and then enters a second evaporator. On the basis, evaporators are respectively arranged in the refrigerating chamber and the cab, and the refrigerating chamber and the cab can be respectively regulated in temperature through a single compressor and a single condenser.
The above refrigerating unit further includes: a third electromagnetic valve 14, a first filter 15 and an oil return capillary tube 16 which are connected in sequence; the inlet end of the first filter 15 is communicated with an outlet end pipeline of the oil separator 2, and the other outlet end of the oil separator 2 is communicated with a three-dimensional inlet end pipeline of the condenser 3; the outlet end of the first filter 15 is in pipe communication with the inlet end of the compressor 1; the third electromagnetic valve 14 is provided in a pipe between the first filter 15 and the oil separator 2, and the oil return capillary tube 16 is provided in a pipe between the first filter 15 and the compressor 1.
In a specific application, the refrigerant is separated from the oil by the oil separator 2, and the oil returns to the compressor 1 through the third electromagnetic valve 14, the first filter 15 and the oil return capillary tube 16, thereby forming a circulation of an oil return branch.
The above refrigerating unit further includes: a second filter 17, a fourth electromagnetic valve 18 and a liquid spraying capillary 19 which are connected in sequence; the inlet end of the second filter 17 is communicated with the outlet end pipeline of the drying filter 5, and the outlet end of the second filter 17 is communicated with the inlet end pipeline of the compressor 1; a fourth solenoid valve 18 and a liquid ejection capillary 19 are provided on the piping between the second filter 17 and the compressor 1, and the fourth solenoid valve 18 is closer to the second filter 17 than the liquid ejection capillary 19. As shown in FIG. 1, the second filter 17 and the liquid supply shutoff valve 20 are not in the same conduit.
In a specific application, the refrigerant passes through the second filter 17, the fourth electromagnetic valve 18, and the liquid ejection capillary tube 19 in addition to the main path of the dry filter 5, and the refrigerant performs the functions of exhausting and cooling.
The above refrigerating unit further includes: and a gas-liquid separator 21 provided at an inlet end of the compressor 1. The gas-liquid separator 21 is located in a pipe between the suction filter 13 and the compressor 1, and also in a pipe between the first filter 15 and the compressor 1. These are two different conduits.
In the refrigerating system, the refrigerating chamber (namely a carriage) evaporator and the cab evaporator share one compressor and one condenser to realize temperature regulation of the carriage and the cab, so that the weight of the new energy refrigerated vehicle is reduced, the volume of a refrigerating unit is reduced, and the cost is saved.
Fig. 2 is a flow chart of a method for controlling a refrigeration unit according to an embodiment of the present invention, as shown in fig. 2, the method includes:
1) monitoring the actual temperature t1 of the compartment and the actual temperature t2 of the cab; the monitoring means can be realized by a temperature sensor of a compartment or a cab;
2) comparing t1 with the first target temperature, t2 with the second target temperature;
3) controlling the opening and closing of the first electromagnetic valve and the second electromagnetic valve according to the comparison result; in particular, the amount of the solvent to be used,
if t1 is not less than the first target temperature and t2 is not less than the second target temperature, controlling the first electromagnetic valve to be opened and the second electromagnetic valve to be opened; then, continuously monitoring t1 and t2 until t1 reaches a first target temperature and t2 reaches a second target temperature, and controlling the unit to stop running;
if t1 is not less than the first target temperature and t2 is not less than the second target temperature, controlling the first electromagnetic valve to be closed and the second electromagnetic valve to be opened; then, continuously monitoring t1 and t2 until t1 reaches a first target temperature and t2 reaches a second target temperature, and controlling the unit to stop running;
if t1 is less than or equal to the first target temperature and t2 is less than or equal to the second target temperature, the first electromagnetic valve is controlled to be closed, and the second electromagnetic valve is controlled to be closed; controlling the unit to stop running;
if the t1 is not more than the first target temperature and the t2 is not less than the second target temperature, controlling the first electromagnetic valve to be opened and the second electromagnetic valve to be closed; and then continuously monitoring t1 and t2 until t1 reaches the first target temperature and t2 reaches the second target temperature, and controlling the unit to stop running.
It should be noted that the reaching of the first target temperature by t1 means that t1 is equal to or infinitely close to the first target temperature, that is, the difference between the two is small and is smaller than the preset threshold. Likewise, it is confirmed that t2 reaches the second target temperature.
The present embodiment also provides a storage medium, wherein the storage medium stores a computer program, and the computer program is configured to execute the above regulation and control method when running.
The embodiment also provides a new forms of energy refrigerator car, and wherein, the new forms of energy refrigerator car includes: a refrigeration unit as described above. In consideration of energy conservation and environmental protection, the power supply of the new energy refrigerated vehicle is provided by a vehicle-mounted battery. Traditional refrigerator car vehicle power and refrigerating system power derive from consuming the fuel, and the refrigeration mode is two sets of independent refrigerating system, and the vehicle power of the new forms of energy refrigerator car in this embodiment and refrigerating unit's compressor all rely on the electric energy drive that on-vehicle battery provided, compare with traditional fuel mode, not only energy-conservation but also environmental protection. The defects of large energy consumption and environmental pollution of the traditional refrigerator car are overcome.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. A refrigeration unit, characterized in that it comprises:
the oil separator is characterized by comprising a compressor (1), an oil separator (2), a condenser (3), a liquid storage device (4) and a dry filter (5) which are sequentially connected, wherein the outlet end of the dry filter (5) is respectively connected with the inlet end of a first evaporator (6) positioned in a cab and the inlet end of a second evaporator (7) positioned in a refrigerating chamber;
a first electromagnetic valve (8) and a first thermostatic expansion valve (9) are arranged between the outlet end of the drying filter (5) and the inlet end of the first evaporator (6), and a second electromagnetic valve (10) and a second thermostatic expansion valve (11) are arranged between the outlet end of the drying filter (5) and the inlet end of the second evaporator (7).
2. The refrigeration unit as set forth in claim 1 further comprising:
the air suction stop valve (12) and the air suction filter (13) are arranged on a pipeline between the outlet end of the first evaporator (6) and the inlet end of the compressor (1), and the outlet end of the air suction filter (13) is communicated with the inlet end pipeline of the compressor (1).
3. The refrigeration unit as set forth in claim 1 further comprising: a third electromagnetic valve (14), a first filter (15) and an oil return capillary tube (16) which are connected in sequence;
the inlet end of the first filter (15) is communicated with an outlet end pipeline of the oil separator (2), and the other outlet end of the oil separator (2) is communicated with an inlet end pipeline of the condenser (3); the outlet end of the first filter (15) is communicated with the inlet end pipeline of the compressor (1);
the third electromagnetic valve (14) is arranged on a pipeline between the first filter (15) and the oil separator (2), and the oil return capillary tube (16) is arranged on a pipeline between the first filter (15) and the compressor (1).
4. The refrigeration unit as set forth in claim 1 further comprising: a second filter (17), a fourth electromagnetic valve (18) and a liquid spraying capillary tube (19) which are connected in sequence;
the inlet end of the second filter (17) is communicated with the outlet end pipeline of the drying filter (5), and the outlet end of the second filter (17) is communicated with the inlet end pipeline of the compressor (1);
the fourth solenoid valve (18) and the liquid ejection capillary (19) are arranged on the conduit between the second filter (17) and the compressor (1), and the fourth solenoid valve (18) is closer to the second filter (17) than the liquid ejection capillary (19).
5. The refrigeration unit as set forth in claim 1 further comprising:
supply liquid stop valve (20), set up and be in the exit end of drier-filter (5), the pipeline that the exit end of drier-filter (5) extends warp supply liquid stop valve (20) back divide two tunnel pipelines, wherein pipeline connection of the same kind first evaporimeter (6), another way pipeline connection second evaporimeter (7).
6. The refrigeration unit as set forth in claim 2 or 3 further comprising:
a gas-liquid separator (21) disposed at an inlet end of the compressor (1).
7. A new energy source refrigerator car, characterized in that, new energy source refrigerator car includes: the refrigeration unit set forth in any of claims 1-6.
8. The new energy refrigerated vehicle of claim 7 wherein power for the new energy refrigerated vehicle is provided by an on-board battery.
9. A method for regulating a refrigeration unit, to be used in a refrigeration unit according to any one of claims 1 to 6, characterized in that it comprises:
monitoring the actual temperature t1 of the compartment and the actual temperature t2 of the cab;
comparing the t1 with a first target temperature, the t2 with a second target temperature;
and controlling the opening and closing of the first electromagnetic valve and the second electromagnetic valve according to the comparison result.
10. The method of claim 9, wherein controlling the opening and closing of the first solenoid valve and the second solenoid valve based on the comparison comprises:
if t1 is not less than the first target temperature and t2 is not less than the second target temperature, controlling the first electromagnetic valve to be opened and the second electromagnetic valve to be opened;
if t1 is not less than the first target temperature and t2 is not less than the second target temperature, controlling the first electromagnetic valve to be closed and the second electromagnetic valve to be opened;
if t1 is less than or equal to a first target temperature and t2 is less than or equal to a second target temperature, controlling the first electromagnetic valve to close and the second electromagnetic valve to close;
and if t1 is less than or equal to the first target temperature and t2 is greater than or equal to the second target temperature, controlling the first electromagnetic valve to be opened and the second electromagnetic valve to be closed.
11. The method according to claim 10, wherein after controlling the opening and closing of the first and second solenoid valves according to the comparison result, the method further comprises:
if t1 is less than or equal to the first target temperature and t2 is less than or equal to the second target temperature, controlling the unit to stop running;
in addition, the t1 and the t2 are continuously monitored until the t1 reaches the first target temperature and the t2 reaches the second target temperature, and the unit is controlled to stop running.
12. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 9 to 11 when executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128424.5A CN110789300A (en) | 2019-11-18 | 2019-11-18 | Refrigerating unit with double evaporators, regulation and control method and new energy refrigerator car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911128424.5A CN110789300A (en) | 2019-11-18 | 2019-11-18 | Refrigerating unit with double evaporators, regulation and control method and new energy refrigerator car |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687672A (en) * | 2005-06-02 | 2005-10-26 | 上海大洋制冷工程有限公司 | One refrigerating unit for cooling two places in refrigerator car |
| CN1294395C (en) * | 2005-06-02 | 2007-01-10 | 上海交通大学 | Refrigerating unit with mixed cycle of compression/injection in refrigerator car supplying two temperatures |
| KR20110094607A (en) * | 2010-02-17 | 2011-08-24 | 진성냉기산업주식회사 | Cold storage system of refrigerator car |
| CN202216443U (en) * | 2011-07-28 | 2012-05-09 | 上海加冷松芝汽车空调股份有限公司 | Direct-drive split low-temperature refrigerating unit for vehicle |
| CN105444449A (en) * | 2015-05-15 | 2016-03-30 | 上海汽车集团股份有限公司 | Dual-temperature refrigerating system of single compressor used for refrigerator car |
| KR101693303B1 (en) * | 2016-06-27 | 2017-01-17 | 주식회사 이에스티 | Refrigeration and freezing individual control system for refrigerating vehicle |
| CN108626908A (en) * | 2018-06-06 | 2018-10-09 | 江苏拓博制冷科技有限公司 | A kind of fluid temperature controlling instruments applied under hot environment |
| CN208254030U (en) * | 2018-03-14 | 2018-12-18 | 上海源知环境科技股份有限公司 | A kind of cryogenic refrigeration systems using environmentally friendly refrigerant R448A |
| CN109140829A (en) * | 2018-08-13 | 2019-01-04 | 珠海格力电器股份有限公司 | Compressor oil-returning structure, refrigeration unit and air-conditioning system |
| CN208751067U (en) * | 2018-05-28 | 2019-04-16 | 江苏秋实汽车空调有限公司 | A kind of cooling cycle system of air-conditioning and refrigeration |
| CN211032108U (en) * | 2019-11-18 | 2020-07-17 | 珠海格力电器股份有限公司 | Refrigerating unit with double evaporators and new energy refrigerator car |
-
2019
- 2019-11-18 CN CN201911128424.5A patent/CN110789300A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687672A (en) * | 2005-06-02 | 2005-10-26 | 上海大洋制冷工程有限公司 | One refrigerating unit for cooling two places in refrigerator car |
| CN1294395C (en) * | 2005-06-02 | 2007-01-10 | 上海交通大学 | Refrigerating unit with mixed cycle of compression/injection in refrigerator car supplying two temperatures |
| KR20110094607A (en) * | 2010-02-17 | 2011-08-24 | 진성냉기산업주식회사 | Cold storage system of refrigerator car |
| CN202216443U (en) * | 2011-07-28 | 2012-05-09 | 上海加冷松芝汽车空调股份有限公司 | Direct-drive split low-temperature refrigerating unit for vehicle |
| CN105444449A (en) * | 2015-05-15 | 2016-03-30 | 上海汽车集团股份有限公司 | Dual-temperature refrigerating system of single compressor used for refrigerator car |
| KR101693303B1 (en) * | 2016-06-27 | 2017-01-17 | 주식회사 이에스티 | Refrigeration and freezing individual control system for refrigerating vehicle |
| CN208254030U (en) * | 2018-03-14 | 2018-12-18 | 上海源知环境科技股份有限公司 | A kind of cryogenic refrigeration systems using environmentally friendly refrigerant R448A |
| CN208751067U (en) * | 2018-05-28 | 2019-04-16 | 江苏秋实汽车空调有限公司 | A kind of cooling cycle system of air-conditioning and refrigeration |
| CN108626908A (en) * | 2018-06-06 | 2018-10-09 | 江苏拓博制冷科技有限公司 | A kind of fluid temperature controlling instruments applied under hot environment |
| CN109140829A (en) * | 2018-08-13 | 2019-01-04 | 珠海格力电器股份有限公司 | Compressor oil-returning structure, refrigeration unit and air-conditioning system |
| CN211032108U (en) * | 2019-11-18 | 2020-07-17 | 珠海格力电器股份有限公司 | Refrigerating unit with double evaporators and new energy refrigerator car |
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Application publication date: 20200214 |