CN210821745U - Waste heat recovery air conditioning system of new energy bus - Google Patents
Waste heat recovery air conditioning system of new energy bus Download PDFInfo
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- CN210821745U CN210821745U CN201921343027.5U CN201921343027U CN210821745U CN 210821745 U CN210821745 U CN 210821745U CN 201921343027 U CN201921343027 U CN 201921343027U CN 210821745 U CN210821745 U CN 210821745U
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Abstract
The utility model discloses a new forms of energy passenger train waste heat recovery air conditioning system, its characterized in that: the system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a motor cooling system, a four-way reversing valve, a first filter, a first expansion valve, a second filter, a gas-liquid separator and a plate heat exchanger; the two ends of the air conditioner side of the plate heat exchanger are connected in parallel between the four-way reversing valve and the indoor heat exchanger, and the two ends of the motor side of the plate heat exchanger are connected with the motor cooling system. The utility model provides an air conditioning system causes heat pump air conditioner with new forms of energy passenger train's motor and drive controller's used heat, provides the energy for it winter for improve heat pump heating capacity and energy efficiency ratio, reduce the defrosting frequency, practiced thrift whole car energy consumption greatly.
Description
Technical Field
The utility model belongs to new forms of energy passenger train field, concretely relates to new forms of energy passenger train waste heat recovery air conditioning system.
Background
In the development process of the existing air conditioner products, in order to meet the customer requirements and the requirements of rapid cooling and heating of the whole vehicle, the refrigeration/heating capacity of the air conditioner needs to be improved on the original basis; on the other hand, with the development of new energy passenger cars, the mileage requirement of the whole car is continuously improved, the energy efficiency ratio of the air conditioner is also required to be higher, and the energy conservation of the product becomes an important index for evaluating the air conditioner.
The motor and the drive controller used by the new energy passenger car can generate heat in operation. Currently, this heat is dissipated to the atmosphere primarily through fans and radiators. In winter, the part of heat can be recovered for heating in the vehicle, and a technical scheme for recovering the part of heat is needed to be found because the part of heat source is low in grade and unstable and is not suitable for directly heating air.
When the traditional heat pump air conditioner operates in winter, the outdoor heat exchanger is an evaporator and absorbs heat from the environment; when the outdoor temperature is lower, the evaporation temperature is low, the heating capacity and the energy efficiency ratio of the air conditioner are both lower, when the surface temperature of the outdoor heat exchanger is lower than 0 ℃, condensed water on the coil pipe can be frosted and frozen, when the specified limit is reached, the unit enters a defrosting cycle, heat supply is stopped, a heat source is provided by the electric heater, and during defrosting, the unit also absorbs heat from the compartment, so that the energy consumption is further increased.
The heat pump air conditioner has low-temperature heating energy efficiency ratio and frequent defrosting, and is a common problem in the industry.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the above-mentioned prior art, the utility model aims at providing a new forms of energy passenger train waste heat recovery air conditioning system.
The purpose of the utility model is realized through the following technical scheme.
A waste heat recovery air conditioning system of a new energy bus comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a motor cooling system, a four-way reversing valve, a first filter, a first expansion valve, a second filter, a gas-liquid separator and a plate heat exchanger; the four-way reversing valve is provided with four interfaces, wherein the first interface is connected with an outlet of the compressor, the second interface is connected with one end of the outdoor heat exchanger, the third interface is connected with one end of the indoor heat exchanger, the fourth interface is connected with one end of the gas-liquid separator, and the other end of the gas-liquid separator is connected with an inlet of the compressor; the other end of the outdoor heat exchanger is connected with the other end of the indoor heat exchanger through a first filter, a first expansion valve and a second filter, the two ends of the air conditioner side of the plate heat exchanger are connected in parallel between the four-way reversing valve and the indoor heat exchanger, and the two ends of the motor side of the plate heat exchanger are connected with a motor cooling system.
The motor cooling system comprises a driving motor, a motor controller, an expansion tank, a water pump, a water level switch, a radiator, a heat radiating fan and a water path pipeline, the expansion tank is connected with the water pump through the water path pipeline, the water level switch is arranged between the expansion tank and the water pump, the two ends of the water pump are connected with the two ends of the radiator through the water path pipeline, the heat radiating fan is arranged on one side of the radiator, the driving motor and the motor controller are laid on the water path pipeline, the two ends of the motor side of the plate heat exchanger are connected with the two ends of the radiator through the water path pipeline, one end of the motor side of the plate heat exchanger is connected with a three-.
And a first one-way valve is arranged between the second connector of the four-way reversing valve and the outdoor heat exchanger, the outlet of the first one-way valve is connected with the outdoor heat exchanger, and the two ends of the air conditioner side of the plate type heat exchanger are connected in parallel at the two ends of the first one-way valve.
And a second one-way valve is arranged between the outdoor heat exchanger and the first filter, an outlet of the second one-way valve is connected with the first filter, and two ends of the air conditioner side of the plate heat exchanger are connected in parallel at two ends of the second one-way valve.
One end of the air-conditioning side of the plate heat exchanger is connected in parallel between the four-way reversing valve and the outdoor heat exchanger, and the other end of the air-conditioning side of the plate heat exchanger is connected in parallel between the first expansion valve and the second filter through the second electronic expansion valve.
The compressor, the outdoor heat exchanger, the indoor heat exchanger and the plate heat exchanger are integrated on the top of the passenger car, an electric cabinet and a power module are further integrated on the top of the passenger car, the functional components form an overhead air conditioner, and the electric cabinet and the power module are used for controlling power supply of the overhead air conditioner.
The outdoor heat exchanger is arranged in the middle of the overhead air conditioner, the indoor heat exchangers are arranged on two sides of the outdoor heat exchanger, the compressor is arranged at the front end of the overhead air conditioner, the plate heat exchanger is arranged on one side of the compressor, the power supply module is arranged at the rear end of the overhead air conditioner, and the electric cabinet is arranged at the rear end of the indoor heat exchanger.
A fan cover plate is arranged above the outdoor heat exchanger, an air conditioner cover is arranged above the indoor heat exchanger, a front flow guide cover is arranged above the compressor, and a rear flow guide cover is arranged above the power supply module.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an air conditioning system causes heat pump air conditioner with new forms of energy passenger train's motor and drive controller's used heat, provides the energy for it winter for improve heat pump heating capacity and energy efficiency ratio, reduce the defrosting frequency, practiced thrift whole car energy consumption greatly.
Drawings
Fig. 1 is a schematic view of the appearance structure of the air conditioner of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the air conditioner of the present invention.
Fig. 3 is an operation schematic diagram of an air conditioner according to the first embodiment.
Fig. 4 is an operation schematic diagram of an air conditioner according to the second embodiment.
Fig. 5 is an operation schematic diagram of an air conditioner according to a third embodiment.
In the figure, 1 is an air conditioner cover, 2 is a fan cover plate, 3 is a front air guide sleeve, 4 is a rear air guide sleeve, 5 is an electric cabinet, 6 is a power module, 7 is an outdoor heat exchanger, 8 is an indoor heat exchanger, 9 is a compressor, 10 is a plate heat exchanger, 11 is a four-way reversing valve, 12 is a first filter, 13 is a first expansion valve, 14 is a second filter, 15 is a gas-liquid separator, 16 is a driving motor, 17 is a motor controller, 18 is an expansion tank, 19 is a water pump, 20 is a water level switch, 21 is a radiator, 22 is a heat radiation fan, 23 is a three-way valve, 24 is a first one-way valve, 25 is a second one-way valve, and 26 is a second electronic expansion valve.
Detailed Description
As shown in figures 1-3, a new forms of energy passenger train waste heat recovery air conditioning system mainly used new forms of energy passenger train retrieves the heat that driving motor and motor controller produced, uses when being particularly useful for winter air conditioner heating, adopts two compressors, two return air structures, through integrated motor waste heat recovery, promotes air conditioner winter heating capacity and energy efficiency ratio, reduces the frost ratio, does not turn into the frost even, has practiced thrift whole car energy consumption greatly. The air conditioning system comprises a compressor 9, an outdoor heat exchanger 7, an indoor heat exchanger 8, a motor cooling system, a four-way reversing valve 11, a first filter 12, a first expansion valve 13, a second filter 14, a gas-liquid separator 15, a plate heat exchanger 10, an electric cabinet 5 and a power module 6; the outdoor heat exchanger 7 is a condensation core and a condensation fan, the indoor heat exchanger 8 is an evaporation core and an evaporation fan, the motor cooling system comprises a driving motor 16, a motor controller 17, an expansion tank 18, a water pump 19, a water level switch 20, a radiator 21, a heat radiation fan 22 and a water path pipeline, cooling liquid is in the water path pipeline, the expansion tank 18 is connected with the water pump 19 through the water path pipeline, the water level switch 20 is arranged between the expansion tank 18 and the water pump 19, two ends of the water pump 19 are connected with two ends of the radiator 21 through the water path pipeline, the heat radiation fan 22 is arranged on one side of the radiator 21, and the driving motor 16 and the motor controller 17 are laid on the water path pipeline; the cooling liquid circulating in the motor cooling system carries out heat dissipation and temperature reduction at the radiator 21 and the heat dissipation fan 22 to take away heat generated by the driving motor 16 and the motor controller 17, and when the cooling liquid in the motor cooling system is insufficient, the water level switch 20 is opened to supplement the cooling liquid for the motor cooling system through the expansion tank 18. The functional components are integrated at the top of the passenger car to form an overhead air conditioner, and the electric cabinet 5 and the power module 6 provide required power and required control for the waste heat recovery air conditioning system.
In the functional components, the four-way reversing valve 11 is provided with four interfaces, wherein a first interface is connected with an outlet of the compressor 9, a second interface is connected with one end of the outdoor heat exchanger 7, a third interface is connected with one end of the indoor heat exchanger 8, a fourth interface is connected with one end of the gas-liquid separator 15, and the other end of the gas-liquid separator 15 is connected with an inlet of the compressor 9; the other end of the outdoor heat exchanger 7 is connected with the other end of the indoor heat exchanger 8 through a first filter 12, a first expansion valve 13 and a second filter 14, the two ends of the plate heat exchanger 10 on the air-conditioning side are connected in parallel between the four-way reversing valve 11 and the indoor heat exchanger 8, the position is the flow direction of refrigerant during air-conditioning refrigeration, namely between the downstream of the four-way reversing valve 11 and the upstream of the indoor heat exchanger 8, and the two ends of the plate heat exchanger 10 on the motor side are connected with a motor cooling system. By reversing the four-way reversing valve 11, the outdoor heat exchanger 7 is equivalent to an evaporator, the indoor heat exchanger 8 is equivalent to a condenser, and the air conditioning system can heat a passenger car. The air conditioning system meets the refrigerating requirement of a passenger on the air conditioner in a high-temperature environment, the heating requirement of the passenger on the air conditioner in a low-temperature environment, and the cooling requirements of the driving motor and the motor controller in various environments.
Two ends of the motor side of the plate heat exchanger 10 are connected with two ends of the radiator 21 through water pipelines, one end of the heat exchanger is connected through a three-way valve 23, and three interfaces of the three-way valve 23 are respectively connected with the plate heat exchanger 10, the radiator 21 and the water pump 19. Through increasing three-way valve 23 for providing the waste heat source, through adjusting the angle of three-way valve 23, can let the coolant liquid pass through radiator 21 and plate heat exchanger 10 simultaneously, can enough play waste heat recovery's effect, can guarantee driving motor 16 and motor controller 17's heat dissipation demand again.
The overhead air conditioner is arranged at the top of the passenger car and is used for distributing functional components, the outdoor heat exchanger 7 is arranged in the middle of the overhead air conditioner, the fan cover plate 2 is arranged above the outdoor heat exchanger 7, and the outdoor heat exchanger 7 can be maintained by detaching the fan cover plate 2 during maintenance; indoor heat exchangers 8 are arranged on two sides of the outdoor heat exchanger 7, an electric cabinet 5 is arranged at the rear end of each indoor heat exchanger 8, an air conditioner cover 1 is arranged above each indoor heat exchanger 8, and the indoor heat exchangers 8 and the electric cabinet 5 can be maintained by opening the air conditioner covers 1 during maintenance; the double compressors are arranged at the front end of the overhead air conditioner, and the front fairing 3 is arranged above the compressor 9; the plate heat exchanger 10 is arranged at one side of the compressor 9, the power supply module 6 is arranged at the rear end position of the overhead air conditioner, and the rear air guide sleeve 4 is arranged above the power supply module 6; the front air guide sleeve 3 and the rear air guide sleeve 4 can reduce the resistance of the passenger car in the running process, and are favorable for reducing the energy consumption of the passenger car. It should be noted that, the front end described in the present application refers to a direction approaching the front of the passenger car, and the rear end refers to a direction approaching the rear of the passenger car.
When the air conditioning system refrigerates, the flow direction of the refrigerant is as follows: the air conditioner comprises a compressor 9, a four-way reversing valve 11, an outdoor heat exchanger 7, a first filter 12, a first expansion valve 13, a second filter 14, an indoor heat exchanger 8, the four-way reversing valve 11, a gas-liquid separator 15 and the compressor 9, wherein the indoor heat exchanger 8 is equivalent to an evaporator, and the air in the vehicle is cooled by evaporating and absorbing heat through a refrigerant so as to achieve the purpose of cooling.
When the air conditioning system heats, the flow direction of the refrigerant is as follows: the air conditioner comprises a compressor 9, a four-way reversing valve 11, an indoor heat exchanger 8, a second filter 14, a first expansion valve 13, a first filter 12, an outdoor heat exchanger 7, the four-way reversing valve 11, a gas-liquid separator 15 and the compressor 9, wherein the indoor heat exchanger 8 is equivalent to a condenser, and the air in the vehicle is heated by condensation and heat release of a refrigerant to reach temperature rise.
Example one
As shown in fig. 3, in the first embodiment, a first check valve 24 is disposed between the second port of the four-way reversing valve 11 and the outdoor heat exchanger 7, an outlet of the first check valve 24 is connected to the outdoor heat exchanger 7, and two ends of the plate heat exchanger 10 on the air-conditioning side are connected in parallel to two ends of the first check valve 24. By adding the first check valve 24 and the plate heat exchanger 10, when the air conditioner heats, waste heat of the motor can be recovered to provide part of or even all of the heat absorption amount for evaporating the refrigerant.
When the air conditioner refrigerates, the flow direction of the refrigerant is as follows: the compressor 9 is connected with the four-way reversing valve 11, the first one-way valve 24, the outdoor heat exchanger 7, the first filter 12, the first expansion valve 13, the second filter 14, the indoor heat exchanger 8, the four-way reversing valve 11, the gas-liquid separator 15 and the compressor 9, the plate heat exchanger 10 is bypassed by adding the first one-way valve 24, and the influence of pressure drop caused by the plate heat exchanger 10 on the air cooling performance is avoided.
When the air conditioner heats, the four-way reversing valve 11 reverses, and the refrigerant flow direction becomes: the compressor 9 to the four-way reversing valve 11 to the indoor heat exchanger 8, at which time the indoor heat exchanger 8 is equivalent to a condenser, to the second filter 14, to the first expansion valve 13, to the first filter 12, to the outdoor heat exchanger 7, at which time the outdoor heat exchanger 7 is equivalent to an evaporator, to the air-conditioning side of the plate heat exchanger 10, to the four-way reversing valve 11, to the gas-liquid separator 15, to the compressor 9.
In the process, the four-way reversing valve 11 is used for reversing, the indoor heat exchanger 8 serves as a condenser, the indoor heat exchanger 8 releases heat to heat air in the vehicle to raise the temperature, the plate heat exchanger 10 is equivalent to a second evaporator, and the driving motor 16 and the motor controller 17 are in a relatively high-temperature water path to secondarily heat a low-temperature refrigerant, so that the evaporating pressure and the temperature of the refrigerant are improved, and the heating capacity and the energy efficiency ratio of the air conditioner are correspondingly improved.
Due to the fact that evaporation pressure and temperature are increased, the temperature of the outdoor heat exchanger 7 is correspondingly increased, only a small part of heat needs to be absorbed from the air, at the moment, the frosting condition of the outdoor heat exchanger 7 is improved, even frosting does not occur, the outdoor fan can correspondingly operate at low frequency and even be turned off, and the purpose of energy conservation is achieved.
When the water temperature of the driving motor 16 is lower than a certain value, the water pump 19 stops to recover waste heat, the air conditioner heating still operates according to the original flow, and the air conditioner heating is not influenced.
When the water temperature of the driving motor 16 is higher than a certain value, a part of cooling liquid is enabled to be radiated through the radiator 21 by adjusting the angle of the three-way valve 23, so that the waste heat recovery effect is met, the radiation requirements of the driving motor 16 and the motor controller 17 are ensured, and the reliability of the driving motor is met.
While recovering the waste heat, the heat of the driving motor 16 and the motor controller 17 is taken away, so that the cooling requirement is met, and the power consumption of the cooling fan 22 is reduced.
Example two
As shown in fig. 4, unlike the first embodiment, in the second embodiment, a second check valve 25 is provided between the outdoor heat exchanger 7 and the first filter 12, an outlet of the second check valve 25 is connected to the first filter 12, and both ends of the plate heat exchanger 10 on the air-conditioning side are connected in parallel to both ends of the second check valve 25. The working mode and working principle are the same as those of the first embodiment.
EXAMPLE III
As shown in fig. 5, unlike the first embodiment, one air-conditioning side end of the plate heat exchanger 10 is connected in parallel between the four-way selector valve 11 and the outdoor heat exchanger 7, and the other air-conditioning side end of the plate heat exchanger 10 is connected in parallel between the first expansion valve 13 and the second filter 14 via the second electronic expansion valve 26. When the air conditioner heats, the opening of the second electronic expansion valve 26 is adjusted to enable the relatively high-temperature water path of the driving motor 16 and the motor controller 17 to carry out secondary heating on part of low-temperature refrigerants, so that the evaporation pressure and the temperature of the refrigerants are improved as a whole, the heating capacity and the energy efficiency ratio of the air conditioner are correspondingly improved, and the rest is the same as that of the first embodiment.
The above description is only a preferred embodiment of the present invention, and is not a limitation to the technical solution of the present invention, it should be noted that, further improvements and changes can be made by those skilled in the art on the premise of the technical solution of the present invention, and all such improvements and changes should be covered in the protection scope of the present invention.
Claims (8)
1. The utility model provides a new forms of energy passenger train waste heat recovery air conditioning system which characterized in that: the system comprises a compressor (9), an outdoor heat exchanger (7), an indoor heat exchanger (8), a motor cooling system, a four-way reversing valve (11), a first filter (12), a first expansion valve (13), a second filter (14), a gas-liquid separator (15) and a plate heat exchanger (10); the four-way reversing valve (11) is provided with four interfaces, wherein the first interface is connected with an outlet of the compressor (9), the second interface is connected with one end of the outdoor heat exchanger (7), the third interface is connected with one end of the indoor heat exchanger (8), the fourth interface is connected with one end of the gas-liquid separator (15), and the other end of the gas-liquid separator (15) is connected with an inlet of the compressor (9); the other end of the outdoor heat exchanger (7) is connected with the other end of the indoor heat exchanger (8) through a first filter (12), a first expansion valve (13) and a second filter (14), the two ends of the air conditioner side of the plate heat exchanger (10) are connected between the four-way reversing valve (11) and the indoor heat exchanger (8) in parallel, and the two ends of the motor side of the plate heat exchanger (10) are connected with a motor cooling system.
2. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 1, wherein: the motor cooling system comprises a driving motor (16), a motor controller (17), an expansion tank (18), a water pump (19), a water level switch (20), a radiator (21), a radiating fan (22) and a water channel pipeline, wherein the expansion tank (18) is connected with the water pump (19) through the water channel pipeline, the water level switch (20) is arranged between the expansion tank (18) and the water pump (19), two ends of the water pump (19) are connected with two ends of the radiator (21) through the water channel pipeline, the radiating fan (22) is arranged on one side of the radiator (21), the driving motor (16) and the motor controller (17) are laid on the water channel pipeline, two ends of the motor side of the plate heat exchanger (10) are connected with two ends of the radiator (21) through the water channel pipeline, one end of the heat exchanger is connected with a three-way valve (23), and the three-way valve (23) is respectively connected with the plate heat exchanger (10), the radiator (21) and the water pump (19).
3. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 2, wherein: a first check valve (24) is arranged between the second connector of the four-way reversing valve (11) and the outdoor heat exchanger (7), the outlet of the first check valve (24) is connected with the outdoor heat exchanger (7), and the two ends of the air conditioner side of the plate type heat exchanger (10) are connected in parallel to the two ends of the first check valve (24).
4. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 2, wherein: a second one-way valve (25) is arranged between the outdoor heat exchanger (7) and the first filter (12), an outlet of the second one-way valve (25) is connected with the first filter (12), and two ends of the air-conditioning side of the plate type heat exchanger (10) are connected in parallel with two ends of the second one-way valve (25).
5. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 2, wherein: one end of the air-conditioning side of the plate heat exchanger (10) is connected in parallel between the four-way reversing valve (11) and the outdoor heat exchanger (7), and the other end of the air-conditioning side of the plate heat exchanger (10) is connected in parallel between the first expansion valve (13) and the second filter (14) through the second electronic expansion valve (26).
6. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 1, wherein: the air conditioner is characterized in that the compressor (9), the outdoor heat exchanger (7), the indoor heat exchanger (8) and the plate heat exchanger (10) are integrated at the top of the passenger car, an electric cabinet (5) and a power module (6) are further integrated at the top of the passenger car, the compressor (9), the outdoor heat exchanger (7), the indoor heat exchanger (8), the plate heat exchanger (10), the electric cabinet (5) and the power module (6) form an overhead air conditioner, and the electric cabinet (5) and the power module (6) are used for controlling power supply of the overhead air conditioner.
7. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 1, wherein: the outdoor heat exchanger (7) is arranged in the middle of the overhead air conditioner, the indoor heat exchangers (8) are arranged on two sides of the outdoor heat exchanger (7), the compressor (9) is arranged at the front end of the overhead air conditioner, the plate type heat exchanger (10) is arranged on one side of the compressor (9), the power module (6) is arranged at the rear end of the overhead air conditioner, and the electric cabinet (5) is arranged at the rear end of the indoor heat exchanger (8).
8. The waste heat recovery air conditioning system of the new energy passenger car as claimed in claim 7, wherein: a fan cover plate (2) is arranged above the outdoor heat exchanger (7), an air conditioner cover (1) is arranged above the indoor heat exchanger (8), a front flow guide cover (3) is arranged above the compressor (9), and a rear flow guide cover (4) is arranged above the power supply module (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921343027.5U CN210821745U (en) | 2019-08-19 | 2019-08-19 | Waste heat recovery air conditioning system of new energy bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921343027.5U CN210821745U (en) | 2019-08-19 | 2019-08-19 | Waste heat recovery air conditioning system of new energy bus |
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| CN210821745U true CN210821745U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422032A (en) * | 2019-08-19 | 2019-11-08 | 郑州科林车用空调有限公司 | A kind of integral new-energy passenger Waste Heat Recovery air-conditioning system |
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2019
- 2019-08-19 CN CN201921343027.5U patent/CN210821745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422032A (en) * | 2019-08-19 | 2019-11-08 | 郑州科林车用空调有限公司 | A kind of integral new-energy passenger Waste Heat Recovery air-conditioning system |
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