CN108489162A - A kind of new-energy automobile heat pump system - Google Patents
A kind of new-energy automobile heat pump system Download PDFInfo
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- CN108489162A CN108489162A CN201810562777.5A CN201810562777A CN108489162A CN 108489162 A CN108489162 A CN 108489162A CN 201810562777 A CN201810562777 A CN 201810562777A CN 108489162 A CN108489162 A CN 108489162A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims 1
- 238000004781 supercooling Methods 0.000 claims 1
- 230000008676 import Effects 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
技术领域technical field
本发明涉及新能源汽车领域，具体地，涉及新能源汽车热泵系统。The invention relates to the field of new energy vehicles, in particular to a heat pump system for new energy vehicles.
背景技术Background technique
传统热泵空调系统有多种实现方式，制冷功能多采用“逆卡诺循环”实现。采暖是将外部环境中热量，“搬运”至内部环境，从而实现采暖功能和节能。There are many ways to realize the traditional heat pump air-conditioning system, and the refrigeration function is mostly realized by "reverse Carnot cycle". Heating is to "transfer" the heat from the external environment to the internal environment, so as to realize the heating function and energy saving.
热交换器，可以提高在采暖时系统“搬运”效率。通过增加热交换器，冷媒在进入电子膨胀阀前充分冷凝，同时将热量传递给进入压缩机的冷媒，提高计入压缩机的冷媒的热能，从而提高“搬运”效率。Heat exchanger, which can improve the efficiency of system "handling" when heating. By adding a heat exchanger, the refrigerant is fully condensed before entering the electronic expansion valve, and at the same time transfers heat to the refrigerant entering the compressor, increasing the heat energy of the refrigerant entering the compressor, thereby improving the "transportation" efficiency.
发明内容Contents of the invention
针对现有技术中的缺陷，本发明的目的是提供一种新能源汽车热泵系统。Aiming at the defects in the prior art, the object of the present invention is to provide a new energy vehicle heat pump system.
根据本发明的一个方面，提供一种新能源汽车热泵系统，包括：电池冷却模块、室内换热模块、热交换器、室外换热器和其他部件；According to one aspect of the present invention, a new energy vehicle heat pump system is provided, including: a battery cooling module, an indoor heat exchange module, a heat exchanger, an outdoor heat exchanger and other components;
其中，in,
--所述其他部件，包括气液分离器、温度压力开关、压缩机、电子膨胀阀、截止阀A、截止阀B、截止阀C、截止膨胀阀；--The other components include gas-liquid separator, temperature and pressure switch, compressor, electronic expansion valve, stop valve A, stop valve B, stop valve C, stop expansion valve;
--所述电池冷却模块，包括电池包、膨胀阀和截止阀D，所述电池包、膨胀阀和截止阀D依次串联；- The battery cooling module includes a battery pack, an expansion valve, and a shut-off valve D, and the battery pack, expansion valve, and shut-off valve D are connected in series in sequence;
--所述室内换热模块，包括蒸发器、电加热器和室内冷凝器，设置在汽车车厢内；--The indoor heat exchange module, including an evaporator, an electric heater and an indoor condenser, is arranged in the car compartment;
--所述室内冷凝器、热交换器、电子膨胀阀、温度压力开关、室外换热器、截止阀C、截止膨胀阀、蒸发器、气液分离器、温度压力开关、压缩机、温度压力开关依次串联；--The indoor condenser, heat exchanger, electronic expansion valve, temperature and pressure switch, outdoor heat exchanger, stop valve C, stop expansion valve, evaporator, gas-liquid separator, temperature and pressure switch, compressor, temperature and pressure The switches are connected in series;
--所述电池冷却模块并联于蒸发器和截止膨胀阀之间；--The battery cooling module is connected in parallel between the evaporator and the cut-off expansion valve;
--所述截止阀A与电子膨胀阀并联；--The cut-off valve A is connected in parallel with the electronic expansion valve;
--所述汽液分离器为二进一出式，进口一接蒸发器出口，进口二接热交换器出口一，出口接温度压力开关；--The vapor-liquid separator is a two-inlet and one-outlet type, one inlet is connected to the outlet of the evaporator, the other is connected to the outlet of the heat exchanger, and the outlet is connected to a temperature and pressure switch;
所述热交换器为四个端口，进口一接截止阀B，出口一接汽液分离器进口二，进口二接截止阀A，出口二接室内冷凝器出口端；所述截止阀B与截止阀C连接。The heat exchanger has four ports, one inlet is connected to the shut-off valve B, one outlet is connected to the second inlet of the vapor-liquid separator, the second inlet is connected to the shut-off valve A, and the second outlet is connected to the outlet of the indoor condenser; the shut-off valve B is connected to the shut-off valve Valve C is connected.
优选地，所述室外换热器为过冷式。Preferably, the outdoor heat exchanger is a subcooling type.
优选地，所述蒸发器、冷凝器和室外换热器均为平行流式。Preferably, the evaporator, condenser and outdoor heat exchanger are all of parallel flow type.
优选地，所述热交换器为板式热交换器。Preferably, the heat exchanger is a plate heat exchanger.
优选地，所述热交换器中的制冷剂和冷却液流向相反。Preferably, the refrigerant and cooling liquid in the heat exchanger flow in opposite directions.
优选地，所述蒸发器、冷凝器和室外热交换器的端口均为压板式。Preferably, the ports of the evaporator, condenser and outdoor heat exchanger are all pressure plate type.
优选地，所述冷凝器流出端串联有单向阀。Preferably, a one-way valve is connected in series at the outflow end of the condenser.
本发明的工作原理：Working principle of the present invention:
(1)制冷工况：压缩机压缩气态冷媒至排气口，高温高压气态冷媒进入排气管路，通过室内冷凝器、热交换器、截止阀A、室外冷凝器多次放热，变为中温高压的液态冷媒。然后，液态冷媒通过截止阀C、截止膨胀阀，并在蒸发器中充分膨胀，吸收大量热，变为低温低压气态冷媒。最后，气态冷媒通过气液分离器回到压缩机吸气口。如此循环。(1) Refrigeration working condition: the compressor compresses the gaseous refrigerant to the exhaust port, the high-temperature and high-pressure gaseous refrigerant enters the exhaust pipeline, and releases heat through the indoor condenser, heat exchanger, stop valve A, and outdoor condenser for many times, becoming Medium temperature and high pressure liquid refrigerant. Then, the liquid refrigerant passes through the shut-off valve C and the shut-off expansion valve, and fully expands in the evaporator, absorbs a large amount of heat, and becomes a low-temperature and low-pressure gaseous refrigerant. Finally, the gaseous refrigerant returns to the suction port of the compressor through the gas-liquid separator. So cycle.
(2)采暖工况：压缩机压缩气态冷媒至排气口，高温高压气态冷媒进入排气管路，通过室内冷凝器放热，变为中温高压气液混合态冷媒。然后，气液混合态冷媒通过热交换器再次放热，变为中温高压液态冷媒。然后，液态冷媒通过电子膨胀阀，并在室外冷凝器内充分膨胀，吸收大量热，变为低温低压气态冷媒。最后，气态冷媒通过截止阀B、热交换器、气液分离器回到压缩机吸气口。如此循环。(2) Heating working condition: the compressor compresses the gaseous refrigerant to the exhaust port, the high-temperature and high-pressure gaseous refrigerant enters the exhaust pipeline, and releases heat through the indoor condenser to become a medium-temperature and high-pressure gas-liquid mixed refrigerant. Then, the gas-liquid mixed refrigerant passes through the heat exchanger to release heat again, and becomes a medium-temperature and high-pressure liquid refrigerant. Then, the liquid refrigerant passes through the electronic expansion valve, fully expands in the outdoor condenser, absorbs a large amount of heat, and becomes a low-temperature and low-pressure gaseous refrigerant. Finally, the gaseous refrigerant returns to the suction port of the compressor through the stop valve B, heat exchanger, and gas-liquid separator. So cycle.
与现有技术相比，本发明具有如下的有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明在管路中加设热交换器，冷媒在所述热交换器中再次换热，其结构可以保证冷媒在进入电子膨胀阀时为全液态，保证“膨胀阀”工作的连续性，提高“膨胀阀”的效率；(1) In the present invention, a heat exchanger is added in the pipeline, and the refrigerant exchanges heat again in the heat exchanger. Its structure can ensure that the refrigerant is completely liquid when it enters the electronic expansion valve, ensuring the continuous operation of the "expansion valve" Sex, improve the efficiency of "expansion valve";
(2)本发明在管路中加设热交换器，冷媒在所述热交换器中将热量传递给低温低压的气态冷媒，可以有效提高气态冷媒在进入压缩机吸气口的温度(内能)。从而，使得压缩机排出口的温度更高。(2) The present invention adds a heat exchanger in the pipeline, and the refrigerant transfers heat to the low-temperature and low-pressure gaseous refrigerant in the heat exchanger, which can effectively improve the temperature (internal energy) of the gaseous refrigerant entering the compressor suction port. ). As a result, the temperature at the discharge port of the compressor is higher.
(3)本发明工艺简单、效果显著，成本低。(3) The process of the present invention is simple, the effect is remarkable, and the cost is low.
附图说明Description of drawings
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显：Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
图1为本发明工艺流程示意图。Fig. 1 is a schematic diagram of the process flow of the present invention.
具体实施方式Detailed ways
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
实施例Example
本实施例涉及一种一种新能源汽车热泵系统，其工艺流程示意图见附图1所示：包括：电池冷却模块、室内换热模块、热交换器、室外换热器和其他部件；This embodiment relates to a heat pump system for a new energy vehicle. The schematic diagram of its process flow is shown in Figure 1: it includes: a battery cooling module, an indoor heat exchange module, a heat exchanger, an outdoor heat exchanger and other components;
其中，in,
--所述其他部件，包括气液分离器、温度压力开关、压缩机、电子膨胀阀、截止阀A、截止阀B、截止阀C、截止膨胀阀；--The other components include gas-liquid separator, temperature and pressure switch, compressor, electronic expansion valve, stop valve A, stop valve B, stop valve C, stop expansion valve;
--所述电池冷却模块，包括电池包、膨胀阀和截止阀D，所述电池包、膨胀阀和截止阀D依次串联；- The battery cooling module includes a battery pack, an expansion valve, and a shut-off valve D, and the battery pack, expansion valve, and shut-off valve D are connected in series in sequence;
--所述室内换热模块，包括蒸发器、电加热器和室内冷凝器，设置在汽车车厢内；--The indoor heat exchange module, including an evaporator, an electric heater and an indoor condenser, is arranged in the car compartment;
--所述室内冷凝器、热交换器、电子膨胀阀、温度压力开关、室外换热器、截止阀C、截止膨胀阀、蒸发器、气液分离器、温度压力开关、压缩机、温度压力开关依次串联；--The indoor condenser, heat exchanger, electronic expansion valve, temperature and pressure switch, outdoor heat exchanger, stop valve C, stop expansion valve, evaporator, gas-liquid separator, temperature and pressure switch, compressor, temperature and pressure The switches are connected in series;
--所述电池冷却模块并联于蒸发器和截止膨胀阀之间；--The battery cooling module is connected in parallel between the evaporator and the cut-off expansion valve;
--所述截止阀A与电子膨胀阀并联；--The cut-off valve A is connected in parallel with the electronic expansion valve;
--所述汽液分离器为二进一出式，进口一接蒸发器出口，进口二接热交换器出口一，出口接温度压力开关；--The vapor-liquid separator is a two-inlet and one-outlet type, one inlet is connected to the outlet of the evaporator, the other is connected to the outlet of the heat exchanger, and the outlet is connected to a temperature and pressure switch;
所述热交换器为四个端口，进口一接截止阀B，出口一接汽液分离器进口二，进口二接截止阀A，出口二接室内冷凝器出口端；所述截止阀B与截止阀C连接。The heat exchanger has four ports, one inlet is connected to the shut-off valve B, one outlet is connected to the second inlet of the vapor-liquid separator, the second inlet is connected to the shut-off valve A, and the second outlet is connected to the outlet of the indoor condenser; the shut-off valve B is connected to the shut-off valve Valve C is connected.
进一步地，所述室外换热器为过冷式。Further, the outdoor heat exchanger is a subcooling type.
进一步地，所述蒸发器、冷凝器和室外换热器均为平行流式。Further, the evaporator, condenser and outdoor heat exchanger are all of parallel flow type.
进一步地，所述热交换器为板式热交换器。Further, the heat exchanger is a plate heat exchanger.
进一步地，所述热交换器中的制冷剂和冷却液流向相反。Further, the refrigerant and cooling liquid in the heat exchanger flow in opposite directions.
进一步地，所述蒸发器、冷凝器和室外热交换器的端口均为压板式。Further, the ports of the evaporator, condenser and outdoor heat exchanger are all pressure plate type.
进一步地，所述冷凝器流出端串联有单向阀。Further, a one-way valve is connected in series at the outflow end of the condenser.
本发明的工作原理：Working principle of the present invention:
(1)制冷工况：压缩机压缩气态冷媒至排气口，高温高压气态冷媒进入排气管路，通过室内冷凝器、热交换器、截止阀A、室外冷凝器多次放热，变为中温高压的液态冷媒。然后，液态冷媒通过截止阀C、截止膨胀阀，并在蒸发器中充分膨胀，吸收大量热，变为低温低压气态冷媒。最后，气态冷媒通过气液分离器回到压缩机吸气口。如此循环。(1) Refrigeration working condition: the compressor compresses the gaseous refrigerant to the exhaust port, the high-temperature and high-pressure gaseous refrigerant enters the exhaust pipeline, and releases heat through the indoor condenser, heat exchanger, stop valve A, and outdoor condenser for many times, becoming Medium temperature and high pressure liquid refrigerant. Then, the liquid refrigerant passes through the shut-off valve C and the shut-off expansion valve, and fully expands in the evaporator, absorbs a large amount of heat, and becomes a low-temperature and low-pressure gaseous refrigerant. Finally, the gaseous refrigerant returns to the suction port of the compressor through the gas-liquid separator. So cycle.
(2)采暖工况：压缩机压缩气态冷媒至排气口，高温高压气态冷媒进入排气管路，通过室内冷凝器放热，变为中温高压气液混合态冷媒。然后，气液混合态冷媒通过热交换器再次放热，变为中温高压液态冷媒。然后，液态冷媒通过电子膨胀阀，并在室外冷凝器内充分膨胀，吸收大量热，变为低温低压气态冷媒。最后，气态冷媒通过截止阀B、热交换器、气液分离器回到压缩机吸气口。如此循环。(2) Heating working condition: the compressor compresses the gaseous refrigerant to the exhaust port, the high-temperature and high-pressure gaseous refrigerant enters the exhaust pipeline, and releases heat through the indoor condenser to become a medium-temperature and high-pressure gas-liquid mixed refrigerant. Then, the gas-liquid mixed refrigerant passes through the heat exchanger to release heat again, and becomes a medium-temperature and high-pressure liquid refrigerant. Then, the liquid refrigerant passes through the electronic expansion valve, fully expands in the outdoor condenser, absorbs a large amount of heat, and becomes a low-temperature and low-pressure gaseous refrigerant. Finally, the gaseous refrigerant returns to the suction port of the compressor through the stop valve B, heat exchanger, and gas-liquid separator. So cycle.
与现有技术相比，本发明具有如下的有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明在管路中加设热交换器，冷媒在所述热交换器中再次换热，其结构可以保证冷媒在进入电子膨胀阀时为全液态，保证“膨胀阀”工作的连续性，提高“膨胀阀”的效率；(1) In the present invention, a heat exchanger is added in the pipeline, and the refrigerant exchanges heat again in the heat exchanger. Its structure can ensure that the refrigerant is completely liquid when it enters the electronic expansion valve, ensuring the continuous operation of the "expansion valve" Sex, improve the efficiency of "expansion valve";
(2)本发明在管路中加设热交换器，冷媒在所述热交换器中将热量传递给低温低压的气态冷媒，可以有效提高气态冷媒在进入压缩机吸气口的温度(内能)。从而，使得压缩机排出口的温度更高。(2) The present invention adds a heat exchanger in the pipeline, and the refrigerant transfers heat to the low-temperature and low-pressure gaseous refrigerant in the heat exchanger, which can effectively improve the temperature (internal energy) of the gaseous refrigerant entering the compressor suction port. ). As a result, the temperature at the discharge port of the compressor is higher.
(3)本发明工艺简单、效果显著，成本低。(3) The process of the present invention is simple, the effect is remarkable, and the cost is low.
以上对本发明的具体实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本发明的实质内容。Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention.
Claims (7)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177689A (en) * | 2018-10-12 | 2019-01-11 | 泰铂（上海）环保科技股份有限公司 | A kind of novel new-energy automobile heat pump air conditioning system |
| CN112484376A (en) * | 2020-11-27 | 2021-03-12 | 扬州兆邦能源科技有限公司 | High-efficiency energy-saving energy storage battery cabinet heat exchange unit |
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