Automobile air conditioning heat pump system and vehicle

Abstract

The application discloses a kind of automobile air conditioner heat pump system and vehicle, belong to automobile air conditioning technical field, the system includes compressor, water condenser, indoor heat exchanger, low temperature radiator, indoor heater, water-water heat exchanger etc., and is connected between each component by pipeline and three-way valve control, ensure the stable circulation of cooling liquid and refrigerant, system includes refrigeration mechanism, first heating mechanism, second heating mechanism and third heating mechanism, by the heat recovery of engine waste heat and refrigerant circulation, reduce the additional energy consumption, improve energy utilization, can adapt to different climate conditions and driving demand, provide comfortable environment for vehicle interior.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning technology, and more specifically, to an automotive air conditioning heat pump system and vehicle. Background Technology

[0002] In today's booming era of new energy vehicles, automotive air conditioning heat pump systems have emerged as a highly anticipated key technology. As a highly efficient integrated heating and air conditioning system applied to new energy vehicles, automotive air conditioning heat pump systems possess outstanding capabilities in the rational distribution, efficient generation, and full utilization of heat energy.

[0003] However, current automotive air conditioning heat pump systems still have many technical shortcomings that urgently need to be overcome. In terms of heat dissipation, their efficiency is relatively low, failing to dissipate the heat generated by the system quickly enough, leading to heat buildup. This not only affects the performance stability of key components but also easily triggers system overheat protection, interfering with normal operation. Heating capacity is also unsatisfactory; in extreme low-temperature environments, it struggles to quickly and efficiently create a warm and comfortable space inside the vehicle, with slow temperature rise failing to meet the needs of passengers for rapid heating. Furthermore, from the perspective of overall vehicle energy consumption, the system suffers from excessive energy consumption. Due to the imperfect energy recovery and supply-demand matching mechanisms, unnecessary energy waste often occurs, increasing the overall energy burden of the vehicle and weakening the energy-saving advantages that new energy vehicles should possess. Summary of the Invention

[0004] One objective of this invention is to provide an automotive air conditioning heat pump system and vehicle to solve the aforementioned problems of low heat dissipation efficiency, poor heating capacity, and high energy consumption in automotive air conditioning heat pump systems.

[0005] According to a first aspect of the present invention, an automotive air conditioning heat pump system is provided, comprising a compressor, a water condenser, an indoor heat exchanger, and a low-temperature radiator;

[0006] The automotive air conditioning heat pump system includes a refrigeration mechanism. Under the refrigeration mechanism, the compressor, the water condenser, the indoor heat exchanger, and the compressor form a refrigeration cycle loop. The coolant passes through the water condenser, the indoor heat exchanger, the first three-way valve, the fourth water pump, the second three-way valve, the low-temperature radiator, and the water condenser to form a cooling cycle loop for the refrigerant.

[0007] Optionally, the automotive air conditioning heat pump system also includes a second fan;

[0008] The automotive air conditioning heat pump system also includes a first heating mechanism. Under the first heating mechanism, the refrigerant is compressed by the compressor and then enters the indoor heat exchanger to dissipate heat. The heat is then blown into the passenger compartment by the second fan for heating.

[0009] Optionally, the refrigerant is cooled by the indoor heat exchanger and then enters the water condenser, where it exchanges heat with the coolant from the low-temperature radiator and absorbs heat. It then enters the compressor for compression and heating to complete the heating cycle.

[0010] Optionally, the automotive air conditioning heat pump system may also include an indoor heater and a water-to-water heat exchanger;

[0011] The automotive air conditioning heat pump system also includes a second heating mechanism. Under the second heating mechanism, the indoor heater, the first three-way valve, the water-to-water heat exchanger, the fourth water pump, the second three-way valve, and the water condenser are sequentially connected to form a circuit.

[0012] Optionally, the automotive air conditioning heat pump system may also include an engine water jacket and a turbocharger;

[0013] Under the second heating mechanism, the coolant is heated by the coolant from the engine water jacket and the turbocharger in the water-to-water heat exchanger, then flows through the fourth water pump and the second three-way valve and directly through the water condenser, and then enters the indoor heat exchanger to release heat. The second fan blows air to carry away the heat into the cabin. The coolant that has passed through the indoor heat exchanger then enters the water-to-water heat exchanger to complete the heating cycle.

[0014] Optionally, the water-to-water heat exchanger is a three-inlet, three-outlet water-to-water heat exchanger.

[0015] Optionally, the automotive air conditioning heat pump system also includes a third heating mechanism, which is configured to operate simultaneously with the first heating mechanism and the second heating mechanism.

[0016] According to a second aspect of the present invention, a vehicle is provided, including the automotive air conditioning heat pump system described in the first aspect of the present invention.

[0017] The automotive air conditioning heat pump system and vehicle disclosed herein have the following technical advantages:

[0018] The coolant starts from the water condenser, flows through the indoor heat exchanger, the first three-way valve, the fourth water pump, the second three-way valve, the low-temperature radiator, and then returns to the water condenser. It dissipates the excess heat absorbed by the coolant into the surrounding environment, preventing the coolant temperature from being too high and affecting the refrigerant cooling effect. Overall, the refrigerant cooling cycle is stable and reliable.

[0019] In the primary heating mechanism, the refrigerant is compressed and heated by the compressor before entering the indoor heat exchanger. Within the heat exchanger, heat is released through heat conduction, and a second fan promptly dissipates this heat into the passenger compartment, rapidly raising the interior temperature and providing a warm environment for the occupants. Utilizing the low-temperature coolant from the low-temperature radiator, the refrigerant absorbs heat from the coolant and reheats, completing a small cycle of heat recovery and reuse. This reduces additional energy consumption and stores energy for the next round of compression and heating, improving energy efficiency.

[0020] In the second heating mechanism, the coolant in the indoor heater is guided into the three-inlet, three-outlet water-to-water heat exchanger via the first three-way valve. Here, the coolant fully absorbs heat from the engine water jacket and turbocharger coolant, improving overall energy utilization. The heated coolant, driven by the fourth water pump, eventually enters the indoor heat exchanger to release heat. The second fan assists in evenly distributing the heat to the passenger compartment. Subsequently, the coolant flows back to the water-to-water heat exchanger to form a cycle. This heating method, which primarily utilizes engine waste heat, significantly reduces additional energy consumption during vehicle operation.

[0021] The system employs both primary and secondary heating mechanisms, combining their advantages. In extremely cold weather, the primary heating mechanism alone may struggle to draw heat from the outside environment due to low temperatures, impacting heating efficiency. Conversely, the secondary heating mechanism alone may experience limited heating if the engine is briefly stopped or operating at low load, resulting in insufficient waste heat. The combination of both mechanisms utilizes the refrigerant's own circulation to draw heat from the water-cooled condenser while continuously incorporating waste heat from the engine. This dual approach ensures a rapid and stable increase in cabin temperature, significantly enhancing the system's ability to cope with extreme low temperatures and complex driving conditions, providing comprehensive and comfortable heating for the vehicle interior.

[0022] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0024] Figure 1 This is a schematic diagram of the structure of an automotive air conditioning heat pump system provided in an embodiment of the present invention. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] This invention proposes an embodiment of an automotive air conditioning heat pump system, specifically, as follows: Figure 1 As shown, it includes a compressor, a water condenser, an indoor heat exchanger, and a low-temperature radiator;

[0030] The automotive air conditioning heat pump system includes a refrigeration mechanism. Under this mechanism, the compressor, water condenser, and interior heat exchanger form a refrigeration cycle. Coolant flows through the water condenser, interior heat exchanger, and first three-way valve (such as...). Figure 1 The three-way valve 1) and the fourth water pump (such as Figure 1 4) Water pump in the middle, second three-way valve (such as Figure 1 The three-way valve 2), low-temperature radiator, and water condenser form a cooling loop for the refrigerant. Specifically, the refrigerant is compressed by the compressor and then enters the water condenser. After being cooled by the water condenser, it enters the indoor heat exchanger for refrigeration. After refrigeration, it enters the compressor for further compression, completing the refrigeration cycle. The first and second three-way valves precisely distribute and regulate the flow of coolant, ensuring that the entire cooling cycle can flexibly adapt to the system's operating conditions. The low-temperature radiator is responsible for dissipating excess heat absorbed by the coolant into the surrounding environment, preventing the coolant temperature from becoming too high and affecting the refrigerant's cooling effect.

[0031] In this embodiment of the invention, the automotive air conditioning heat pump system further includes a second fan (such as...). Figure 1 (2) The automotive air conditioning heat pump system also includes a first heating mechanism. Under the first heating mechanism, the refrigerant is compressed by the compressor and then enters the indoor heat exchanger to dissipate heat. The heat is then blown into the passenger compartment by the second fan for heating. After being cooled in the indoor heat exchanger, the refrigerant enters the water condenser and exchanges heat with the coolant from the low-temperature radiator. Then it enters the compressor for compression and heating to complete the heating cycle.

[0032] It should be noted that after the refrigerant temperature drops and flows into the water condenser, it absorbs heat from the relatively low-temperature coolant from the low-temperature radiator and reheats, completing a small cycle of heat recovery and reuse. This reduces additional energy consumption and stores energy for the next round of compression and heating, improving energy efficiency. It is especially suitable for situations where the ambient temperature is not particularly low and can quickly respond to heating needs.

[0033] In this embodiment of the invention, the automotive air conditioning heat pump system further includes an indoor heater and a water-to-water heat exchanger; the automotive air conditioning heat pump system also includes a second heating mechanism, under which the indoor heater, the first three-way valve, the water-to-water heat exchanger, the fourth water pump, the second three-way valve, and the water condenser are sequentially connected to form a loop.

[0034] In this embodiment of the invention, the automotive air conditioning heat pump system also includes an engine water jacket and a turbocharger; under the second heating mechanism, the coolant is heated by the coolant from the engine water jacket and the turbocharger in the water-to-water heat exchanger, then flows through the fourth water pump and the second three-way valve and directly through the water condenser, and then enters the indoor heat exchanger to release heat. The second fan blows air to carry away the heat into the passenger compartment, and the coolant that has passed through the indoor heat exchanger enters the water-to-water heat exchanger to complete the heating cycle.

[0035] It should be noted that the first three-way valve guides the coolant in the indoor heater into the water-to-water heat exchanger, where the coolant fully absorbs heat from the engine water jacket and turbocharger coolant. The engine generates a large amount of waste heat during operation, and the turbocharger also generates significant heat during operation. Previously, most of this heat was directly dissipated, but in the system of this invention, it is effectively recovered and utilized, greatly improving the overall energy utilization rate. Driven by the fourth water pump, the heated coolant flows through the second three-way valve and the water condenser before finally entering the indoor heat exchanger to release heat. The second fan assists in evenly distributing the heat to the passenger compartment. The coolant then flows back to the water-to-water heat exchanger to form a cycle. This heating method, which primarily utilizes engine waste heat, significantly reduces additional energy consumption for heating during vehicle operation, making it particularly suitable for long-term engine operation, reducing vehicle energy costs and improving heating capacity.

[0036] In this embodiment of the invention, the water-to-water heat exchanger is a three-inlet, three-outlet type. It should be noted that the three-inlet, three-outlet water-to-water heat exchanger has three inlets and three outlets; this multi-channel structure increases the heat exchange area. In the second heating mechanism, coolant from the indoor heater, engine water jacket, and turbocharger can simultaneously enter the three-inlet, three-outlet water-to-water heat exchanger. The increased contact area allows for more thorough heat exchange between liquids at different temperatures, improving heating efficiency.

[0037] In this embodiment of the invention, the automotive air conditioning heat pump system further includes a third heating mechanism, which is configured to operate simultaneously with the first heating mechanism and the second heating mechanism.

[0038] The system employs both primary and secondary heating mechanisms, combining their advantages. When switching between different driving scenarios, the third heating mechanism can dynamically adjust the weighting of the primary and secondary heating mechanisms based on factors such as in-vehicle temperature requirements and engine operating status. This achieves efficient energy allocation between the refrigerant circulation system and the coolant waste heat recovery system, preventing energy waste.

[0039] The present invention also provides an embodiment of a vehicle, including the aforementioned automotive air conditioning heat pump system. Specifically, the vehicle is a hybrid electric vehicle. High-efficiency cooling is achieved through the circulation of a water condenser and an interior heat exchanger. It also features multiple heating modes, allowing the vehicle to better adapt to different climatic conditions. The excellent control of the interior temperature directly enhances the driving experience and comfort.

[0040] The above description of the structure, features, and effects of the present invention is based on the embodiments shown in the figures. However, the above are only preferred embodiments of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched by those skilled in the art to form a variety of equivalent solutions without departing from or changing the design concept and technical effects of the present invention. Therefore, the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A car air conditioning heat pump system, characterized in that, This includes compressors, water condensers, indoor heat exchangers, and low-temperature radiators; The automotive air conditioning heat pump system includes a refrigeration mechanism. Under the refrigeration mechanism, the compressor, the water condenser, the indoor heat exchanger, and the compressor form a refrigeration cycle loop. The coolant passes through the water condenser, the indoor heat exchanger, the first three-way valve, the fourth water pump, the second three-way valve, the low-temperature radiator, and the water condenser to form a cooling cycle loop for the refrigerant. The automotive air conditioning heat pump system also includes a second fan; the automotive air conditioning heat pump system also includes: a first heating mechanism, under the first heating mechanism, the refrigerant is compressed by the compressor and enters the indoor heat exchanger to dissipate heat, and the heat is blown into the passenger compartment by the second fan for heating; After being cooled by the indoor heat exchanger, the refrigerant enters the water condenser and exchanges heat with the coolant from the low-temperature radiator. Then, it enters the compressor for compression and heating to complete the heating cycle. The heat pump system also includes an indoor heater and a water-to-water heat exchanger; The automotive air conditioning heat pump system also includes a second heating mechanism. Under the second heating mechanism, the indoor heater, the first three-way valve, the water-to-water heat exchanger, the fourth water pump, the second three-way valve, and the water condenser are sequentially connected to form a circuit. The refrigeration system circulation piping and the heating system circulation piping share at least the following components: water condenser, indoor heat exchanger, low-temperature radiator, compressor, first three-way valve, second three-way valve, and fourth water pump; The air conditioning heat pump system also includes the engine water jacket and turbocharger; Under the second heating mechanism, the coolant is heated by the coolant from the engine water jacket and the turbocharger in the water-to-water heat exchanger, then flows through the fourth water pump and the second three-way valve and directly through the water condenser, and then enters the indoor heat exchanger to release heat. The second fan blows air to carry away the heat into the passenger compartment, and the coolant that has passed through the indoor heat exchanger enters the water-to-water heat exchanger to complete the heating cycle. Furthermore, the water-to-water heat exchanger is a three-inlet, three-outlet water-to-water heat exchanger. In the second heating mechanism, the coolant from the indoor heater, the coolant from the engine water jacket, and the turbocharger coolant can simultaneously enter the three-inlet, three-outlet water-to-water heat exchanger.

2. The automotive air conditioning heat pump system according to claim 1, characterized in that, It also includes a third heating mechanism, which is configured to operate simultaneously with the first heating mechanism and the second heating mechanism.

3. A vehicle, characterized in that, Including the automotive air conditioning heat pump system as described in any one of claims 1-2.

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