CN215176135U

CN215176135U - Rail transit air conditioning system with one-key refrigerant recovery control function

Info

Publication number: CN215176135U
Application number: CN202121342637.0U
Authority: CN
Inventors: 王建
Original assignee: MERAK JINXIN AIR CONDITIONING SYSTEMS (WUXI) CO Ltd
Current assignee: MERAK JINXIN AIR CONDITIONING SYSTEMS (WUXI) CO Ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-14
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a rail traffic air conditioning system with refrigerant key recovery control function, including automatically controlled cabinet and refrigeration recovery unit, automatically controlled cabinet and refrigeration recovery unit pass through the unit connector and connect, refrigeration recovery unit is including low-voltage switch, compressor, condenser, reservoir, solenoid valve, expansion valve, evaporimeter, condensation fan and the evaporation fan of connection setting, the expansion valve sets up to two, be provided with refrigerant recovery control button on the automatically controlled cabinet, the user sends the refrigerant recovery instruction through pressing down refrigerant recovery control button, controls the compressor carries out the refrigerant recovery action; in this way, the utility model discloses can be when air conditioning unit need maintain the change system part, the discharge of refrigerant is reduced by a wide margin to the vast majority refrigerant in the recovery system, and the refrigerant of retrieving simultaneously can reuse, and environmental protection and energy saving has reduced the maintenance cost.

Description

Rail transit air conditioning system with one-key refrigerant recovery control function

Technical Field

The utility model relates to a rail vehicle air conditioner technical field especially relates to a rail traffic air conditioning system with control function is retrieved to refrigerant key.

Background

The refrigeration air conditioning unit is an essential component part in a railway vehicle, and for a long time, when the air conditioning unit is replaced by a component for maintenance, refrigerant in a refrigeration system is basically directly discharged into the atmosphere, so that resources are wasted, the maintenance cost is increased, and the environment is harmed, for example, the refrigerant R407C which is used in a large scale at present has a GWP (global warming potential) of 1774, and the greenhouse effect is caused by large-amount discharge.

Therefore, it is highly desirable to develop a rail air conditioning unit with a refrigerant recovery system, which is easy to operate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a rail traffic air conditioning system with control function is retrieved to refrigerant key, can be when air conditioning unit need maintain the change system part, and the discharge of refrigerant is reduced by a wide margin to the vast majority refrigerant in the recovery system, and the refrigerant of retrieving simultaneously can reuse, environmental protection and energy saving effectively reduces the maintenance cost.

In order to solve the technical problem, the utility model discloses a technical scheme be: the rail transit air conditioning system with the refrigerant one-key recovery control function comprises an electric control cabinet and a refrigeration recovery device, wherein the electric control cabinet is connected with the refrigeration recovery device through a unit connector, the refrigeration recovery device comprises a low-voltage switch, a compressor, a condenser, a liquid storage device, an electromagnetic valve, an expansion valve, an evaporator, a condensing fan and an evaporating fan which are connected and arranged, the expansion valve is arranged in two numbers, a refrigerant recovery control button is arranged on the electric control cabinet, and a user sends a refrigerant recovery instruction by pressing the refrigerant recovery control button to control the compressor to perform refrigerant recovery action.

Preferably, the refrigeration recovery devices are arranged in parallel.

Preferably, a drying filter is connected between the reservoir and the electromagnetic valve.

Preferably, a liquid viewing mirror is arranged between the electromagnetic valve and the dry filter.

The utility model has the advantages that:

1. a rail transit air conditioning system with a one-key refrigerant recovery control function has the advantages that the refrigerant is recovered by one key, a low-pressure switch of a refrigeration system automatically acts to cut off the operation of a compressor, the recovery is finished, and the operation is simple;

2. a rail transit air conditioning system with a one-key refrigerant recovery control function can store most of refrigerants in a recovery system in a liquid storage device when an air conditioning unit needs to maintain and replace system components, so that the refrigerant discharge is greatly reduced, and meanwhile, the recovered refrigerants can be reused, so that the rail transit air conditioning system is environment-friendly and energy-saving and can reduce the maintenance cost;

3. the rail transit air conditioning system with the one-key refrigerant recovery control function is simple in structure, easy to achieve and low in cost.

Drawings

Fig. 1 is a schematic structural diagram of a rail transit air conditioning system with a refrigerant one-key recovery control function according to the present invention;

fig. 2 is a schematic structural view of the electric control cabinet of the utility model;

the parts in the drawings are numbered as follows:

1. an electric control cabinet; 2. a low voltage switch; 3. a compressor; 4. a condenser; 5. a reservoir; 6. an electromagnetic valve; 7. an expansion valve; 8. an evaporator; 9. a condensing fan; 10. an evaporation fan; 11. a refrigerant recovery control button; 12. drying the filter; 13. a liquid viewing mirror.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Example (b):

as shown in fig. 1 and 2, the rail transit air conditioning system with the refrigerant one-key recovery control function comprises an electric control cabinet 1 and a refrigeration recovery device, wherein the electric control cabinet 1 is connected with the refrigeration recovery device through a unit connector so as to receive an operation command sent by the electric control cabinet 1; in order to prevent one set of refrigerating device from being in fault and prevent the other set of refrigerating device from normally running to provide cold energy, the refrigerating and recovering devices are two sets which are arranged in parallel.

As shown in fig. 1 and 2, the refrigeration recovery device includes a low-voltage switch 2, a compressor 3, a condenser 4, a liquid reservoir 5, an electromagnetic valve 6, an expansion valve 7, an evaporator 8, a condensing fan 9 and an evaporating fan 10, which are connected and arranged, wherein the expansion valve 7 is arranged in two, a refrigerant recovery control button 11 is arranged on the electric control cabinet 1, and a user sends a refrigerant recovery instruction by pressing the refrigerant recovery control button 11 to control the compressor 3 to perform a refrigerant recovery action; in addition, a dry filter 12 is connected between the liquid storage device 5 and the electromagnetic valve 6, and a liquid sight glass 13 is arranged between the electromagnetic valve 6 and the dry filter 12; the main ones are: the low-pressure switch 2 is used for controlling the tripping of the pipeline when the suction pressure is lower than the set value of the low-pressure switch, the liquid accumulator 5 is used for recovering and storing the refrigerant, and the electromagnetic valve 6 is used for controlling the on-off of the refrigeration system.

As shown in fig. 1 and 2, when the air conditioning unit needs to be maintained and the system components are replaced, a user presses a refrigerant recovery control button 11, the control system responds to a user operation instruction, closes the electromagnetic valve 6, starts the compressor 3, the compressor 3 operates normally, refrigerant in the evaporator 8 is evaporated, sucked and compressed by the compressor 3 and then conveyed to the condenser 4, and high-temperature and high-pressure refrigerant gas is cooled and condensed in the condenser 4 and then flows into the liquid accumulator 5.

Because the electromagnetic valve 6 is closed to cut off the refrigeration recovery device, the refrigerant in the liquid storage device 5 cannot flow through the dry filter 12, the liquid sight glass 13 and the electromagnetic valve 6 to reach the expansion valve 7 and the evaporator 8, and no refrigerant exists in the section of pipeline; the refrigerant in the evaporimeter 8 can be inhaled and compress into condenser 4 by compressor 3 after the heat absorption evaporation gradually, along with the refrigerant in the evaporimeter 8 is less and less, compressor 3's suction pressure also can be lower and lower, when suction pressure is less than the low-voltage switch setting value, low-voltage switch 2 jumps absolutely, compressor 3 stops, send the information that the refrigerant was retrieved and is accomplished, condensation fan 9 and evaporating fan 10 are closed, refrigerant in the refrigeration recovery unit is retrieved to condenser 4 and reservoir 5 in, the utility model provides a system can retrieve most refrigerant and store in reservoir 5, reduce the emission of refrigerant by a wide margin, the refrigerant of retrieving simultaneously can reuse, very convenient and practical.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a rail traffic air conditioning system with refrigerant key recovery control function which characterized in that: including automatically controlled cabinet (1) and refrigeration recovery unit, automatically controlled cabinet (1) and refrigeration recovery unit pass through the unit connector and connect, refrigeration recovery unit is including connecting low-voltage switch (2) that sets up, compressor (3), condenser (4), reservoir (5), solenoid valve (6), expansion valve (7), evaporimeter (8), condensation fan (9) and evaporation fan (10), expansion valve (7) set up to two, be provided with refrigerant recovery control button (11) on automatically controlled cabinet (1), the user is through pressing refrigerant recovery control button (11) send the refrigerant and retrieve the instruction, control compressor (3) carry out the refrigerant and retrieve the action.

2. The rail transit air conditioning system having a refrigerant one-key recovery control function according to claim 1, characterized in that: the refrigeration recovery devices are arranged in parallel.

3. The rail transit air conditioning system having a refrigerant one-key recovery control function according to claim 1, characterized in that: a drying filter (12) is connected between the liquid storage device (5) and the electromagnetic valve (6).

4. A rail transit air conditioning system having a refrigerant one-key recovery control function according to claim 3, characterized in that: a liquid sight glass (13) is arranged between the electromagnetic valve (6) and the drying filter (12).