CN214564491U - Electric refrigerating unit for refrigerator car and refrigerator car - Google Patents
Electric refrigerating unit for refrigerator car and refrigerator car Download PDFInfo
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- CN214564491U CN214564491U CN202120593557.6U CN202120593557U CN214564491U CN 214564491 U CN214564491 U CN 214564491U CN 202120593557 U CN202120593557 U CN 202120593557U CN 214564491 U CN214564491 U CN 214564491U
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Abstract
The utility model discloses an electric refrigerating unit and refrigerator car for refrigerator car belongs to refrigerator car technical field, for solving in the current refrigerator car compressor damage scheduling problem design because of high temperature easily. The utility model discloses electric refrigerating unit for refrigerator car includes compressor, condenser subassembly, evaporimeter subassembly and electrical apparatus module, and compressor, condenser subassembly and evaporimeter subassembly pass through the pipe connection and become cyclic annular, still includes temperature sensor, hydrojet solenoid valve and capillary, and temperature sensor sets up in the gas vent department of compressor; a node A is arranged on a pipeline connected between the condenser assembly and the evaporator assembly, and the liquid spraying solenoid valve and the capillary tube are sequentially connected between the node A and a liquid spraying port of the compressor. The utility model discloses liquid spray solenoid valve can be opened to motor-driven refrigeration unit and refrigerator car for the refrigerator car when the high temperature in the compressor, and the refrigerant can be cooled down to compressor inside, improves the availability factor and the life-span of compressor.
Description
Technical Field
The utility model relates to a refrigerator car technical field especially relates to an electric refrigerating unit for refrigerator car and refrigerator car including this electric refrigerating unit for refrigerator car.
Background
The new energy electric refrigerator car is a vehicle for transporting fresh frozen goods, and the core refrigeration part of the new energy electric refrigerator car is an electric refrigeration unit. In order to ensure the quality of fresh frozen goods, the refrigerating unit is required to be capable of refrigerating safely, stably and continuously.
The existing electric refrigerator mainly comprises a compressor, a condenser, an evaporator and the like, wherein a refrigerant flows in the compressor, the condenser and the evaporator, and the evaporator is used for cooling air in a refrigerator body.
The defects of the electric refrigerator car comprise: 1. when the ambient temperature is high, in order to maintain the temperature in the refrigerating box body within a set range, the compressor needs to continuously work for a long time, so that the temperature of the compressor is overhigh, and the high temperature can damage the components of the compressor and shorten the service life of the compressor due to the lack of a necessary compressor cooling structure; 2. when the electric refrigerator car is parked, the battery of the electric refrigerator car is required to be taken as a power source for refrigeration, and the endurance and the electric quantity of the whole car are reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a longer electric refrigerating unit for refrigerator car of compressor life.
Another object of the present invention is to provide a refrigerator car with a longer service life of the compressor.
To achieve the purpose, on one hand, the utility model adopts the following technical scheme:
the electric refrigerating unit for the refrigerator car comprises a compressor, a condenser assembly, an evaporator assembly and an electric appliance module, wherein the compressor, the condenser assembly and the evaporator assembly are connected into a ring shape through pipelines, the electric refrigerating unit also comprises a temperature sensor, a liquid spraying electromagnetic valve and a capillary tube, the temperature sensor is arranged at an exhaust port of the compressor, and the electric appliance module is connected with the temperature sensor; the condenser assembly is connected with the evaporator assembly, a node A is arranged on the pipeline, the liquid spraying electromagnetic valve and the capillary tube are sequentially connected between the node A and a liquid spraying opening of the compressor, and the electric appliance module is connected with the liquid spraying electromagnetic valve.
In particular, the electric refrigeration unit for a refrigerator car further includes an on-board dc high voltage line and a manipulator, which are respectively connected to the electric appliance module.
In particular, the appliance module comprises an inverter for outputting an alternating current, the inverter being connected to the power input of the compressor, and an AC/DC-DC module for converting an alternating current mains supply into a direct current, the AC/DC-DC module being connected to a battery of the refrigerated vehicle.
In particular, the output of the AC/DC-DC module is connected to the input of the manipulator.
In particular, the condenser assembly comprises a condensing fan and the evaporator assembly comprises an evaporating fan, the condensing fan and the evaporating fan being connected to an output of the AC/DC-DC module, respectively.
In particular, the electric refrigerating unit for the refrigerator car further includes a defrost valve, one end of which is connected to the discharge port of the compressor through a pipe, the other end of which is connected to the evaporator assembly through a pipe, and an output terminal of the AC/DC-DC module is connected to the defrost valve.
Particularly, electric refrigerating unit for refrigerator car still includes dry reservoir, looks liquid mirror, expansion valve and vapour and liquid separator, dry reservoir with look the liquid mirror and set gradually the condenser subassembly with between the node A, the expansion valve sets up node A with between the evaporator assembly, vapour and liquid separator sets up the evaporator assembly with between the compressor.
In particular, the electric refrigerator set for a refrigerator car further includes an oil separator disposed between the compressor and the condenser assembly.
On the other hand, the utility model adopts the following technical scheme:
a refrigerator car comprises a refrigerator compartment and further comprises the electric refrigerating unit for the refrigerator car, and an evaporator assembly is configured to exchange heat with air in the refrigerator compartment.
The utility model discloses electric refrigerating unit for refrigerator car includes temperature sensor, hydrojet solenoid valve and capillary, and temperature sensor judges whether the temperature is too high in the compressor through the temperature that detects the refrigerant of the air vent department of compressor; when the temperature in the compressor is judged to be too high, the liquid spraying electromagnetic valve is opened, the refrigerant enters the liquid spraying opening of the compressor through the liquid spraying electromagnetic valve and the capillary tube, the interior of the compressor is cooled, the compressor is prevented from continuously working in a high-temperature environment, the compressor can be guaranteed to operate within a suitable temperature range, and the service efficiency and the service life of the compressor are improved. The refrigeration can switch the standby power mode when the refrigerator is stopped, the vehicle-mounted direct-current high-voltage line is connected to the external alternating-current commercial power, and the external alternating-current commercial power is used as a power supply to take power so as to improve the endurance mileage and the economic benefit of the refrigerator car.
Drawings
Fig. 1 is a schematic structural view of an electric refrigerator unit for a refrigerator car according to an embodiment of the present invention;
fig. 2 is a schematic view of a connection structure between an electrical module and a manipulator according to an embodiment of the present invention.
In the figure:
1. a compressor; 2. a condenser assembly; 3. an evaporator assembly; 4. an appliance module; 5. a temperature sensor; 6. a liquid spraying electromagnetic valve; 7. a capillary tube; 8. a manipulator; 9. a defrost valve; 10. drying the liquid storage device; 11. a liquid viewing mirror; 12. an expansion valve; 13. a gas-liquid separator; 14. an oil separator; 15. an evaporation pressure regulating valve; 21. a condensing fan; 31. an evaporation fan.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment discloses an electric refrigerator unit for a refrigerator car and a refrigerator car including the same. As shown in fig. 1 and 2, the electric refrigerator set for a refrigerator car includes a compressor 1, a condenser module 2, an evaporator module 3, an electric module 4, a temperature sensor 5, a liquid spray solenoid valve 6, and a capillary tube 7.
The compressor 1, the condenser assembly 2 and the evaporator assembly 3 are connected into a ring shape through pipelines, and a refrigerant flows in the pipelines; the temperature sensor 5 is arranged at the air outlet of the compressor 1 and used for detecting the temperature of the refrigerant at the air outlet; the electrical appliance module 4 is connected with the temperature sensor 5 through a connecting wire harness and can receive a temperature value detected by the temperature sensor 5. The arrangement position of the electric appliance module 4 in the electric refrigerating unit for the refrigerator car is not limited, and the electric appliance module 4 can be arranged in a gap in the electric refrigerating unit for the refrigerator car under the condition that the normal use of the electric appliance module 4 is not influenced, so that the space of the whole machine is saved.
A node A is arranged on a pipeline connected between the condenser assembly 2 and the evaporator assembly 3, the liquid spraying electromagnetic valve 6 and the capillary tube 7 are sequentially connected between the node A and a liquid spraying opening of the compressor 1 through the pipeline, and a refrigerant can enter the liquid spraying opening of the compressor 1 after passing through the liquid spraying electromagnetic valve 6 and the capillary tube 7; the electrical module 4 is connected with the liquid spraying electromagnetic valve 6, and the electrical module 4 can open or close the liquid spraying electromagnetic valve 6. The refrigerated vehicle further comprises a refrigerated compartment, the evaporator assembly 3 being arranged to be able to exchange heat with air in the refrigerated compartment, such that the refrigerated compartment is continuously within a set temperature range.
The electric appliance module 4 is provided with a temperature upper limit value T1 and a temperature lower limit value T2, T1 is greater than T2, and the temperature value detected by the temperature sensor 5 is T0. The compressor 1 continuously operates in a refrigeration cycle mode of the electric refrigerating unit for the refrigerator car, when T0 is larger than T1, the electric appliance module 4 opens the liquid spraying electromagnetic valve 6, gas-liquid mixed refrigerant is changed into low-pressure gaseous refrigerant after passing through the liquid spraying electromagnetic valve 6 and the capillary tube 7 in sequence, and the low-pressure gaseous refrigerant enters a liquid spraying opening of the compressor 1 to cool the interior of the compressor 1; when T0 is less than T2, the liquid injection electromagnetic valve 6 is closed by the electrical module 4, the refrigerant does not enter the liquid injection port of the compressor 1 any more, and the liquid injection cooling of the compressor 1 is completed. The values of T1 and T2 can be specifically set according to the use requirements, and preferably, T1 is 105 ℃ and T2 is 85 ℃.
The electric refrigerating unit for the refrigerator car comprises a temperature sensor 5, a liquid spraying electromagnetic valve 6 and a capillary 7, wherein the temperature sensor 5 judges whether the temperature in the compressor 1 is overhigh or not by detecting the temperature of a refrigerant at an air outlet of the compressor 1; when the temperature in the compressor 1 is determined to be too high, the liquid spraying electromagnetic valve 6 is opened, a refrigerant enters the liquid spraying port of the compressor 1 through the liquid spraying electromagnetic valve 6 and the capillary 7, the interior of the compressor 1 is cooled, the compressor 1 is prevented from continuously working in a high-temperature environment, the compressor 1 is ensured to be capable of operating within a suitable temperature range, and the service efficiency and the service life of the compressor 1 are improved.
On the basis of the structure, the electric refrigerating unit for the refrigerator car further comprises a vehicle-mounted direct-current high-voltage wire, a standby power socket and a manipulator 8, wherein the vehicle-mounted direct-current high-voltage wire and the manipulator 8 are respectively connected to the electric appliance module 4. The refrigeration can switch the standby power mode when the refrigerator is stopped, the vehicle-mounted direct-current high-voltage line is connected to the external alternating-current commercial power, and the external alternating-current commercial power is used as a power supply to take power so as to improve the endurance mileage and the economic benefit of the refrigerator car.
The refrigerator car has no limit on the use method of external alternating current commercial power, and can effectively supplement the power source of the refrigerator car. Preferably, the appliance module 4 comprises an inverter for outputting alternating current and an AC/DC-DC module for converting alternating mains into direct current, the inverter being connected to the power input of the compressor 1, the AC/DC-DC module being connected to the battery of the refrigerated vehicle. The output of the AC/DC-DC module is connected to the input of the manipulator 8 by a connection harness, and the manipulator 8 can switch the appliance module 4 to the standby mode.
After the alternating current commercial power enters the electric appliance module 4, one part of the alternating current commercial power enters the power input end of the compressor 1 in the form of an alternating current power supply after passing through the frequency converter, and the other part of the alternating current commercial power supplements electric energy for the battery of the refrigerator car in the form of a direct current 12V or 24V power supply after passing through the AC/DC-DC module.
On the basis of the structure, the condenser assembly 2 comprises a condensing fan 21, and the heat exchange between the condenser assembly 2 and the environment can be realized after the condensing fan 21 is started; the evaporator assembly 3 comprises an evaporation fan 31, and the heat exchange between the evaporator assembly 3 and the air in the refrigeration compartment can be realized after the evaporation fan 31 is started. The condensing fan 21 and the evaporating fan 31 are respectively connected to the output end of the AC/DC-DC module, and the electric appliance module 4 controls the starting and stopping of the condensing fan 21 and the evaporating fan 31, so that the use is more convenient.
The electric refrigerating unit for the refrigerator car further comprises a drying liquid storage device 10, a liquid viewing mirror 11, an expansion valve 12 and a gas-liquid separator 13, wherein the drying liquid storage device 10 and the liquid viewing mirror 11 are sequentially arranged between the condenser assembly 2 and the node A, the expansion valve 12 is arranged between the node A and the evaporator assembly 3, and the gas-liquid separator 13 is arranged between the evaporator assembly 3 and the compressor 1. The electric refrigeration unit for a refrigerator car further comprises an oil separator 14 disposed between the compressor 1 and the condenser assembly 2.
On the basis of the structure, the electric refrigerating unit for the refrigerating vehicle further comprises a defrosting valve 9, one end of the defrosting valve 9 is connected to the exhaust port of the compressor 1 through a pipeline, the other end of the defrosting valve 9 is connected to the evaporator assembly 3 through a pipeline, and the output end of the AC/DC-DC module is connected to the defrosting valve 9.
In the refrigeration cycle mode, high-temperature and high-pressure gaseous refrigerant is discharged from an exhaust port of the compressor 1, passes through the oil separator 14 and enters a condenser core body of the condenser assembly 2, the condensing fan 21 is started, and the refrigerant in the condenser core body is radiated to form a gas-liquid mixed state; after passing through the drying liquid storage device 10, the liquid viewing mirror 11 and the expansion valve 12, the refrigerant in a gas-liquid mixed state enters the evaporator core body of the evaporator assembly 3, the refrigerant is changed into low-pressure low-temperature gas, the evaporation fan 31 is started, and the low-pressure low-temperature gaseous refrigerant in the evaporator core body exchanges heat with air in the refrigerating compartment; the refrigerant in the evaporator core passes through the gas-liquid separator 13 and the evaporation pressure regulating valve 15 and then returns to the compressor 1, thereby completing the refrigeration cycle.
When the operation time of the refrigeration cycle mode is long or the humidity in the refrigerator compartment is high, white frost is formed on the surface of the evaporator core, resulting in a decrease in the refrigeration effect. The operator 8 is then automatically or manually controlled to switch to defrost mode: the defrosting valve 9 is opened, the condensing fan 21 and the evaporating fan 31 are stopped, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port of the compressor 1 enters the evaporator core body through the defrosting valve 9, the refrigerant after white frost on the surface of the evaporator core body is removed passes through the gas-liquid separator 13 and the evaporating pressure regulating valve 15 and then returns to the compressor 1, and the defrosting hot gas bypass cycle is completed.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. The electric refrigerating unit for the refrigerator car comprises a compressor (1), a condenser assembly (2), an evaporator assembly (3) and an electric appliance module (4), wherein the compressor (1), the condenser assembly (2) and the evaporator assembly (3) are connected into a ring shape through a pipeline, and the electric refrigerating unit is characterized by further comprising a temperature sensor (5), a liquid spraying electromagnetic valve (6) and a capillary tube (7), wherein the temperature sensor (5) is arranged at an exhaust port of the compressor (1), and the electric appliance module (4) is connected with the temperature sensor (5); connect condenser subassembly (2) with between evaporator assembly (3) be provided with node A on the pipeline, hydrojet solenoid valve (6) with capillary (7) connect gradually node A with between the hydrojet mouth of compressor (1), electrical apparatus module (4) with hydrojet solenoid valve (6) are connected.
2. Electric refrigeration unit for refrigerated vehicles according to claim 1, characterized in that it further comprises an on-board high direct voltage line and a manipulator (8), said on-board high direct voltage line and said manipulator (8) being connected to said electric module (4), respectively.
3. Electric refrigeration unit for refrigerated vehicles according to claim 2, characterized in that the electrical module (4) comprises an inverter for outputting alternating current, connected to the power input of the compressor (1), and an AC/DC-DC module for converting alternating current mains into direct current, connected to a refrigerated vehicle battery.
4. Electric refrigeration unit for refrigerated vehicles according to claim 3, characterized in that the output of the AC/DC-DC module is connected to the input of the manipulator (8).
5. Electric refrigeration unit for refrigerated vehicles according to claim 3, characterized in that the condenser assembly (2) comprises a condensing fan (21) and the evaporator assembly (3) comprises an evaporating fan (31), the condensing fan (21) and the evaporating fan (31) being connected to the output of the AC/DC-DC module, respectively.
6. The electric refrigerator set for a refrigerator car according to claim 3, further comprising a defrost valve (9), wherein one end of the defrost valve (9) is connected to the discharge port of the compressor (1) through a pipe, the other end is connected to the evaporator assembly (3) through a pipe, and the output of the AC/DC-DC module is connected to the defrost valve (9).
7. The electric refrigerator set for refrigerated vehicles according to any one of claims 1 to 6, characterized in that it further comprises a dry reservoir (10), a sight glass (11), an expansion valve (12) and a gas-liquid separator (13), the dry reservoir (10) and the sight glass (11) being arranged in sequence between the condenser assembly (2) and the node A, the expansion valve (12) being arranged between the node A and the evaporator assembly (3), the gas-liquid separator (13) being arranged between the evaporator assembly (3) and the compressor (1).
8. An electric refrigeration unit for refrigerated vehicles according to any of claims 1 to 6, characterized in that it further comprises an oil separator (14) arranged between the compressor (1) and the condenser assembly (2).
9. A refrigerated vehicle comprising a refrigerated compartment, characterized in that it further comprises an electric refrigeration unit for a refrigerated vehicle according to any of claims 1 to 8, the evaporator assembly (3) being configured to be able to exchange heat with the air inside said refrigerated compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120593557.6U CN214564491U (en) | 2021-03-23 | 2021-03-23 | Electric refrigerating unit for refrigerator car and refrigerator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120593557.6U CN214564491U (en) | 2021-03-23 | 2021-03-23 | Electric refrigerating unit for refrigerator car and refrigerator car |
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| Publication Number | Publication Date |
|---|---|
| CN214564491U true CN214564491U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120593557.6U Active CN214564491U (en) | 2021-03-23 | 2021-03-23 | Electric refrigerating unit for refrigerator car and refrigerator car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659299A (en) * | 2022-04-15 | 2022-06-24 | 超酷（上海）制冷设备有限公司 | Condensing unit, refrigeration plant and refrigerator car |
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2021
- 2021-03-23 CN CN202120593557.6U patent/CN214564491U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659299A (en) * | 2022-04-15 | 2022-06-24 | 超酷（上海）制冷设备有限公司 | Condensing unit, refrigeration plant and refrigerator car |
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