CN212720353U - Refrigerator car and refrigerating system thereof - Google Patents
Refrigerator car and refrigerating system thereof Download PDFInfo
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- CN212720353U CN212720353U CN202021152287.7U CN202021152287U CN212720353U CN 212720353 U CN212720353 U CN 212720353U CN 202021152287 U CN202021152287 U CN 202021152287U CN 212720353 U CN212720353 U CN 212720353U
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Abstract
A refrigerator car and a refrigerating system thereof comprise a compressor, a condenser, a throttling device, an evaporator and a heat exchanger, wherein the heat exchanger comprises a liquid inlet, a liquid outlet, an air inlet and an air outlet; the air outlet of the compressor is communicated with the inlet of the condenser, the outlet of the condenser is communicated with the liquid inlet of the heat exchanger, the liquid outlet of the heat exchanger is communicated with the inlet of the throttling device, the outlet of the throttling device is communicated with the inlet of the evaporator, the outlet of the evaporator is communicated with the air inlet of the heat exchanger, and the air outlet of the heat exchanger is communicated with the air inlet of the compressor; the liquid inlet is formed with the appearance chamber that is used for storing the refrigerant between liquid outlet and the liquid inlet, and the refrigerant flows to the liquid outlet through the appearance chamber by the liquid inlet, is formed with the passageway that supplies the refrigerant to flow between air inlet and the gas outlet, and the refrigerant is by the gas-liquid separation of the in-process that the air inlet flows to the gas outlet to carry out the heat exchange with the refrigerant that holds the intracavity, improve refrigerating system's stability and life cycle, overall structure is simple, simple to operate.
Description
Technical Field
The utility model relates to an air conditioning technology field especially relates to a refrigerating system of refrigerator car.
Background
Along with the continuous expansion of the fresh electric business to the demands of the refrigeration house and the refrigeration car and the increase of the policy support force, the market demand of the refrigeration car is continuously increased.
Because in the transportation, cold volume can receive the loss, for this reason, people hope to promote the refrigerating output through the heat transfer area who increases refrigerating system's condenser/evaporimeter or chooseing for use the compressor of big discharge capacity to guarantee the stability of carriage temperature, this nevertheless causes the increase of refrigerating system cost to a great extent, brings extra economic burden for the user. In addition, in order to avoid the damage of the compressor of the refrigeration system due to liquid impact, a liquid-gas separator is generally arranged on a liquid supply pipeline of the refrigeration system, a heat regenerator is also added on the liquid supply pipeline, the refrigerant liquid before throttling is cooled by using low-pressure steam from an evaporator, and the high-pressure liquid before throttling is supercooled so as to prevent the refrigerant from vaporizing before throttling, improve the suction temperature of the compressor, and realize the purposes of suction overheating and improving the working condition of the compressor; but the regenerator is large in size, not only occupies unit installation space, but also improves the installation difficulty.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a refrigerator car and a refrigeration system thereof, which have simple structure, space saving and convenient installation.
The utility model provides a refrigerating system of a refrigerator car, which comprises a compressor, a condenser, a throttling device, an evaporator and a heat exchanger, wherein the heat exchanger comprises a liquid inlet, a liquid outlet, an air inlet and an air outlet; an air outlet of the compressor is communicated with an inlet of the condenser, an outlet of the condenser is communicated with the liquid inlet of the heat exchanger, the liquid outlet of the heat exchanger is communicated with an inlet of the throttling device, an outlet of the throttling device is communicated with an inlet of the evaporator, an outlet of the evaporator is communicated with the air inlet of the heat exchanger, and the air outlet of the heat exchanger is communicated with the air inlet of the compressor; a cavity for storing a refrigerant is formed between the liquid inlet and the liquid outlet, the refrigerant flows from the liquid inlet to the liquid outlet through the cavity, a channel for the refrigerant to flow is formed between the air inlet and the air outlet, and the refrigerant is subjected to gas-liquid separation in the process of flowing from the air inlet to the air outlet and exchanges heat with the refrigerant in the cavity.
The utility model also provides a refrigerator car including above-mentioned refrigerating system.
Compared with the prior art, the utility model discloses the function of the integrated gas-liquid separation of refrigerating system's of refrigerator car heat exchanger and stock solution can effectively retrieve the heat and increase the super-cooled rate of the refrigerant that flows into the evaporimeter, and then improves refrigerating system's efficiency, and refrigerating system's refrigerating output obtains promoting, can effectively avoid the liquid of compressor to hit hidden danger again, prevents that the compressor from damaging, improves refrigerating system's stability and life cycle. Additionally, the utility model discloses a refrigerating system collects gas-liquid separation and stock solution on heat exchanger, has cancelled regenerator and liquid storage pot, and the structure is simpler, saves installation space, and refrigerating unit's installation is also more convenient.
Drawings
Fig. 1 is a schematic view of an embodiment of a refrigeration system of a refrigerator car according to the present invention.
Fig. 2 is a schematic diagram of the heat exchanger of the refrigeration system of fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. One or more embodiments of the present invention are illustrated in the accompanying drawings to provide a more accurate and thorough understanding of the disclosed embodiments. It should be understood, however, that the present invention may be embodied in many different forms and is not limited to the embodiments described below.
Fig. 1 shows an embodiment of a refrigeration system of a refrigerator car according to the present invention, which includes a compressor 10, a condenser 12, a heat exchanger 14, a throttling device 16, an evaporator 18, and pipes connecting the above components. Refrigerant circulates among all devices along the pipeline, absorbs heat in the evaporator 18 and evaporates to form low-temperature and low-pressure steam, the compressor 10 applies work to the low-temperature and low-pressure steam to change the low-temperature and low-pressure steam into high-temperature and high-pressure gas, the high-temperature and high-pressure gas is released in the condenser 12 and condensed to form medium-temperature and medium-pressure liquid, the condensed medium-temperature and medium-pressure liquid is changed into low-temperature and low-pressure liquid through throttling of the throttling device 16 and returns to the evaporator 18, and a refrigeration cycle is completed.
Referring to fig. 2, the heat exchanger 14 includes a first container 20 and a second container 22 disposed in the first container 20. The first container 20 is a liquid accumulator, the second container 22 is a heat regenerator, and a space between the first container 20 and the second container 22 forms a cavity 21 for temporarily storing refrigerant which does not enter into a cycle. The first container 20 includes a liquid inlet 24 and a liquid outlet 25, the liquid inlet 24 is connected to the outlet of the condenser 12, the liquid outlet 25 is connected to the inlet of the evaporator 18 through a throttling device 16, the throttling device 16 may be an expansion valve, etc., the refrigerant liquid after heat releasing and condensing in the condenser 12 enters the cavity 21 from the liquid inlet 24 of the first container 20, and the refrigerant in the cavity 21 flows to the evaporator 18 from the liquid outlet 25.
The second container 22 is used to separate the liquid refrigerant from the refrigerant delivered by the evaporator 18 to the compressor 10 to avoid liquid-borne compression. The second container 22 includes an air inlet 27 and an air outlet 28, with an air flow path formed between the air inlet 27 and the air outlet 28. The air inlet 27 is connected to the outlet of the evaporator 18, the air outlet 28 is connected to the air suction port of the compressor 10, and in the process that the refrigerant vapor absorbing heat and evaporating in the evaporator 18 flows from the air inlet 27 to the air outlet 28 of the second container 22, the liquid in the refrigerant vapor is separated and temporarily stored in the second container 22, and then is evaporated again when appropriate and sucked away by the compressor 10.
Since the second container 22 is disposed in the first container 20, during the process that the refrigerant vapor flowing from the evaporator 18 to the compressor 10 flows through the second container 22, heat exchange is formed between the refrigerant vapor and the refrigerant liquid flowing from the condenser 12 to the throttling device 16 through the receiving chamber 21, and the refrigerant flowing to the suction port of the compressor 10 absorbs the heat of the refrigerant flowing to the throttling device 16; specifically, the low-temperature and low-pressure gaseous refrigerant discharged from the evaporator 18 enters the second container 22 to be subjected to gas-liquid separation; the high-temperature and high-pressure liquid refrigerant from the condenser 12 enters the first container 20, the two paths of refrigerants exchange heat in the heat exchanger 14, and the temperature of the gaseous refrigerant is increased, so that the refrigerant flowing back to the compressor 10 keeps a gaseous state, and the working condition of the compressor 10 is improved; the temperature of the liquid refrigerant is reduced, the supercooling degree of the system is improved, the purpose of heat recovery is realized, and the refrigerating capacity and the energy efficiency of the unit are improved.
Preferably, the liquid inlet 24 is formed at an upper portion of the first container 20, and the liquid outlet 25 is formed at a lower portion of the first container 20. Preferably, the outer surface of the second container 22 is provided with heat exchange fins 23, so that the refrigerant liquid can form effective heat exchange with the second container 22 during flowing through the first container 20, thereby improving heat exchange efficiency, effectively reducing the outlet liquid temperature of the first container 20, and simultaneously increasing the suction temperature of the compressor 10. In this way, not only is the refrigerant liquid subcooled prior to throttling to avoid vaporization of the refrigerant liquid prior to throttling, but also the temperature of the refrigerant vapor flowing to the suction port of the compressor 10, i.e., the suction temperature of the compressor 10, is increased.
Through heat exchanger 14, the utility model discloses refrigerating system of refrigerator car can effectively retrieve the heat, and compressor 10's consumption can effectively reduce, in other words under equal consumption, compressor 10 or whole refrigerating system's refrigerating output can obtain effectual promotion. For among the prior art through the heat transfer area who increases condenser/evaporimeter or choose for use the scheme that the compressor of big discharge capacity promotes the unit refrigeration capacity, the utility model discloses refrigerating system of refrigerator car does not basically have the increase at the cost, can not aggravate user's economic burden.
In addition, the heat exchanger 14 is embedded with two containers, the first container 20 is used for temporarily storing the refrigerant which is not circulated, and the second container 22 is used for separating the liquid in the refrigerant vapor flowing to the compressor 10, so that the liquid refrigerant is prevented from entering the compressor 10, namely, the liquid impact risk of the compressor 10 is avoided. Thus, the heat exchanger 14 integrates the liquid storage function and the gas-liquid separation function, so that the installation space can be reduced, and the whole refrigeration system is more compact.
Preferably, the discharge of compressor 10 is connected to the inlet of condenser 12 by an oil 30. The oil 30 includes an inlet 32, a first outlet 34, and a second outlet 36. An inlet 32 of the oil 30 is connected to an exhaust of the compressor 10, a first outlet 34 is connected to the condenser 12 by a pipe, and a second outlet 36 is connected to a lubricant inlet of the compressor 10 by a pipe. After the compressor 10 is started, the lubricating oil is discharged to the oil 30 from the discharge port of the compressor 10 along with the high-temperature and high-pressure refrigerant gas, the oil 30 separates the lubricating oil in the discharge gas of the compressor 10 and sends the lubricating oil back to the compressor 10 from the second outlet 36, and the refrigerant gas from which the lubricating oil is separated by the oil 30 is sent to the condenser 12 from the first outlet 34 of the oil 30 to be condensed.
In this embodiment, a first electromagnetic valve 38 is disposed on a pipeline between the first outlet 34 of the oil 30 and the inlet of the condenser 12, and is used for controlling the connection and disconnection between the first outlet 34 of the oil 30 and the condenser 12, that is, controlling the gas delivery from the compressor 10 to the condenser 12; the first outlet 34 of the oil 30 is connected to the inlet of the evaporator 18 via a pipe, and a second solenoid valve 40 is disposed on the pipe for controlling the connection and disconnection of the oil 30 to the evaporator 18, that is, controlling the gas delivery from the compressor 10 to the evaporator 18. In some embodiments, if oil 30 is omitted, first solenoid valve 38 may be disposed on a conduit between the discharge of compressor 10 and the inlet of condenser 12, and second solenoid valve 40 may be disposed on a conduit between the discharge of compressor 10 and the inlet of evaporator 18. Because the setting of first solenoid valve 38, second solenoid valve 40, the utility model discloses refrigerating system of refrigerator car can have two kinds of operating modes of refrigeration and defrosting, specifically:
under the refrigeration mode, the refrigerant can be in the evaporator 18 evaporation that normally absorbs heat, this moment the utility model discloses the refrigerating system operation refrigeration mode of refrigerator car: the first solenoid valve 38 is opened to communicate the discharge port of the compressor 10 with the inlet of the condenser 12, while the second solenoid valve 40 is closed to disconnect the discharge port of the compressor 10 from the inlet of the evaporator 18. At this time, the exhaust port of the compressor 10 is connected to the inlet of the condenser 12, the outlet of the condenser 12 is connected to the inlet 24 of the heat exchanger 14, the outlet 25 of the heat exchanger 14 is connected to the inlet of the throttling device 16, the outlet of the throttling device 16 is connected to the inlet of the evaporator 18, the outlet of the evaporator 18 is connected to the inlet 27 of the heat exchanger 14, and the outlet 28 of the heat exchanger 14 is connected to the inlet of the compressor 10. The compressor 10, the condenser 12, the heat exchanger 14, the throttle device 16, and the evaporator 18 together form a refrigeration circuit, and the refrigerant circulates along the refrigeration circuit, and as indicated by solid arrows in fig. 1, the refrigerant absorbs heat in the evaporator 18 and releases heat in the condenser 12, thereby achieving refrigeration.
When the temperature is lower in the refrigerator car railway carriage or compartment, the evaporimeter can frost, this moment the utility model discloses the refrigerating system of refrigerator car can move the defrosting mode: the first solenoid valve 38 is closed disconnecting the discharge port of the compressor 10 from the inlet of the condenser 12, while the second solenoid valve 40 is open connecting the discharge port of the compressor 10 to the inlet of the evaporator 18. At this time, the discharge port of the compressor 10 is connected to the inlet of the evaporator 18 via the second solenoid valve 40, the outlet of the evaporator 18 is connected to the inlet 27 of the heat exchanger 14, and the outlet 28 of the heat exchanger 14 is connected to the suction port of the compressor 10. The compressor 10, the evaporator 18 and the second container 22 together form a defrosting circuit, the high-temperature and high-pressure refrigerant gas generated by the work of the compressor 10 is directly delivered to the evaporator 18 through the second solenoid valve 40 to defrost the evaporator 18, and then is returned to the compressor 10 through the second container 22, and the flow of the refrigerant is shown by the dotted arrows in fig. 1.
The utility model discloses refrigerating system of refrigerator car is through setting up heat exchanger 14, and this 14 integrated stock solution functions of heat exchanger and gas-liquid separation function, can effectively retrieve the heat, improve refrigerating system's efficiency, can effectively avoid compressor 10's liquid to hit hidden danger again, prevents that compressor 10 from damaging, improves refrigerating system's stability and life cycle. Preferably, the evaporator 18 is provided with a fan which generates a forced air flow to enhance the heat exchange between the evaporator 18 and the external environment. Similarly, the condenser 12 is provided with a fan which creates a forced air flow that enhances the heat exchange of the condenser 12 with the external environment. In addition, through the setting of first solenoid valve 38, second solenoid valve 40, the utility model discloses the refrigerating system of refrigerator car can be according to whether the evaporimeter 18 frosts operation refrigeration mode or defrosting mode, ensures entire system's normal operating.
It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the spirit of the present invention, and all the changes made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The refrigerating system of the refrigerator car comprises a compressor, a condenser, a throttling device and an evaporator, and is characterized by also comprising a heat exchanger, wherein the heat exchanger comprises a liquid inlet, a liquid outlet, an air inlet and an air outlet; an air outlet of the compressor is communicated with an inlet of the condenser, an outlet of the condenser is communicated with the liquid inlet of the heat exchanger, the liquid outlet of the heat exchanger is communicated with an inlet of the throttling device, an outlet of the throttling device is communicated with an inlet of the evaporator, an outlet of the evaporator is communicated with the air inlet of the heat exchanger, and the air outlet of the heat exchanger is communicated with the air inlet of the compressor; a cavity for storing a refrigerant is formed between the liquid inlet and the liquid outlet, the refrigerant flows from the liquid inlet to the liquid outlet through the cavity, a channel for the refrigerant to flow is formed between the air inlet and the air outlet, and the refrigerant is subjected to gas-liquid separation in the process of flowing from the air inlet to the air outlet and exchanges heat with the refrigerant in the cavity.
2. A refrigerating system for a refrigerator car as claimed in claim 1, wherein said heat exchanger includes a first container and a second container disposed in said first container, said cavity being formed between said first container and said second container, said liquid inlet and said liquid outlet being formed on said first container, and said air inlet and said air outlet being formed on said second container.
3. A refrigerating system for a refrigerator car as claimed in claim 2, wherein said first container is an accumulator and said second container is a regenerator.
4. A refrigerating system for a refrigerator car as claimed in claim 2, wherein an outer surface of said second container is provided with heat exchange fins.
5. A refrigerating system for a refrigerator car as claimed in any one of claims 1 to 4, further comprising an oil connected between said compressor and said condenser, said oil being adapted to separate lubricating oil from refrigerant, said oil comprising an inlet, a first outlet and a second outlet, said inlet of said oil communicating with a discharge outlet of said compressor, said first outlet of said oil communicating with an inlet of said condenser for feeding refrigerant to said condenser, said second outlet of said oil communicating with an inlet of said compressor for feeding separated lubricating oil to said compressor.
6. A refrigerating system for a refrigerator car as claimed in claim 5, further comprising a first solenoid valve provided between the first outlet of the oil and the inlet of the condenser, the first solenoid valve being adapted to control communication and disconnection between a discharge port of the compressor and the inlet of the condenser.
7. A refrigerating system for a refrigerator car as claimed in claim 6, wherein an inlet of said evaporator is connected to said first outlet of said oil by a pipe, and said pipe is provided with a second solenoid valve for controlling communication and disconnection between a discharge port of said compressor and an inlet of said evaporator.
8. The refrigeration system of a refrigerator car as set forth in claim 7, wherein said first solenoid valve is open and said second solenoid valve is closed, the refrigeration system operating in a cooling mode; the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the refrigeration system operates in a defrosting mode.
9. A refrigerating system of a refrigerator car as claimed in any one of claims 1 to 4, further comprising a first solenoid valve connected between a discharge port of said compressor and an inlet of said condenser, and a second solenoid valve connected between a discharge port of said compressor and an inlet of said evaporator; the first electromagnetic valve is opened, the second electromagnetic valve is closed, and the refrigeration system operates in a refrigeration mode; the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the refrigeration system operates in a defrosting mode.
10. A refrigerated vehicle comprising a refrigeration system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021152287.7U CN212720353U (en) | 2020-06-19 | 2020-06-19 | Refrigerator car and refrigerating system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021152287.7U CN212720353U (en) | 2020-06-19 | 2020-06-19 | Refrigerator car and refrigerating system thereof |
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| Publication Number | Publication Date |
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| CN212720353U true CN212720353U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021152287.7U Active CN212720353U (en) | 2020-06-19 | 2020-06-19 | Refrigerator car and refrigerating system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137780A (en) * | 2021-05-14 | 2021-07-20 | 上海理工大学 | Low-temperature refrigeration cold-storage system for efficiently utilizing solar energy |
| CN114061183A (en) * | 2021-11-08 | 2022-02-18 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
-
2020
- 2020-06-19 CN CN202021152287.7U patent/CN212720353U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137780A (en) * | 2021-05-14 | 2021-07-20 | 上海理工大学 | Low-temperature refrigeration cold-storage system for efficiently utilizing solar energy |
| CN113137780B (en) * | 2021-05-14 | 2022-11-18 | 上海理工大学 | Low-temperature refrigeration cold-storage system for efficiently utilizing solar energy |
| CN114061183A (en) * | 2021-11-08 | 2022-02-18 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
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Effective date of registration: 20210927 Address after: 518000 Guangzhou Longhua New District Guanlan Street Dabuxiang Community Tourist Road 1303 Hongxin Industrial Park No. 8 Building 3 A, No. 5 Factory 101 Patentee after: SHENZHEN KETAI NEW ENERGY VEHICLE AIR CONDITIONING TECHNOLOGY Co.,Ltd. Address before: 518000 1st-3rd Floor of No.9 Building of Hongxin Industrial Park, 1303 Guanlan Street Sightseeing Road, Longhua District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ENVICOOL TECHNOLOGY Co.,Ltd. |