Vehicle-mounted compressor system and vehicle

Abstract

The utility model belongs to compressor technical field discloses a kind of vehicle-mounted compressor system and vehicle, the vehicle-mounted compressor system includes compressor assembly, first heat exchanger, second heat exchanger, first expansion valve and second expansion valve, compressor assembly has suction port and exhaust port, suction port is used to inhale low-temperature low-pressure refrigerant, exhaust port is used to discharge high-temperature high-pressure refrigerant, first heat exchanger is communicated with the exhaust port of compressor, second heat exchanger is communicated with the suction port of compressor, first expansion valve is set between first heat exchanger and second heat exchanger, compressor assembly, first heat exchanger, first expansion valve and second heat exchanger form circuit in sequence, the inlet end of second expansion valve is set on the inlet side of first expansion valve, and the outlet end of second expansion valve is set on the outlet side of second heat exchanger and is communicated with the suction side of compressor assembly.The utility model provides a kind of vehicle-mounted compressor system and vehicle, can improve the working stability and service life of vehicle-mounted compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to vehicle-mounted compressor systems and vehicles. Background Technology

[0002] With the development of the automotive industry and the improvement of consumer demand, some vehicles have begun to be equipped with in-vehicle refrigerator systems to meet users' needs for low-temperature storage during travel. As an important device in vehicles for storing and preserving food, beverages, and other items, one of the core components of an in-vehicle refrigerator is the compressor. The performance of the compressor has a significant impact on the cooling effect, power consumption, and noise level of the in-vehicle refrigerator.

[0003] However, in related technologies, when the compressor speed of a vehicle refrigerator is low, the system often does not take additional heat dissipation enhancement measures, resulting in insufficient cooling of the power components in the compressor controller, easy rise in operating temperature, and subsequent overheating shutdown, which seriously affects the continuous and stable operation of the vehicle refrigerator. Utility Model Content

[0004] The purpose of this invention is to provide an on-board compressor system and vehicle that enables power components to cool down quickly, reduces the risk of overheating shutdown, and improves the working stability and service life of the on-board compressor.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An on-board compressor system, comprising:

[0007] The compressor assembly has an intake port and an exhaust port. The intake port is used to draw in low-temperature, low-pressure refrigerant, and the exhaust port is used to discharge high-temperature, high-pressure refrigerant.

[0008] The first heat exchanger is connected to the exhaust port of the compressor, and the second heat exchanger is connected to the intake port of the compressor.

[0009] The first expansion valve is disposed between the first heat exchanger and the second heat exchanger, and the compressor assembly, the first heat exchanger, the first expansion valve and the second heat exchanger form a circuit in sequence;

[0010] The second expansion valve has its inlet end located on the inlet side of the first expansion valve, and its outlet end located on the outlet side of the second heat exchanger and connected to the suction side of the compressor assembly via a pipeline.

[0011] Preferably, the compressor assembly includes a compressor housing and a compressor side cover, which are detachably connected. The intake port is located on the compressor housing, and the exhaust port is located on the compressor side cover.

[0012] Preferably, the vehicle compressor system further includes a controller assembly, which includes a controller housing and a controller circuit board disposed within the controller housing. The controller housing is fixedly connected to the compressor housing. The controller circuit board is equipped with power components, and the second expansion valve is electrically connected to the controller circuit board via an electrical connector.

[0013] Preferably, the vehicle compressor system also includes a temperature detection unit, which is located inside the controller housing. The temperature detection unit is used to detect whether the temperature of the power components has reached the preset temperature.

[0014] Preferably, the second expansion valve is fixedly installed in the controller housing.

[0015] Preferably, the second expansion valve is fixedly installed on the compressor housing.

[0016] Preferably, the second expansion valve is integrated with the compressor housing.

[0017] Preferably, the controller housing and the compressor housing are integrated into one unit.

[0018] A vehicle comprising an onboard compressor system of any of the above-described technical solutions.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides an on-board compressor system and vehicle. The compressor assembly draws in low-temperature, low-pressure refrigerant through its intake port, and after compression, discharges high-temperature, high-pressure refrigerant through its exhaust port. The high-temperature, high-pressure refrigerant first enters the first heat exchanger and undergoes heat exchange to become a low-temperature liquid refrigerant. At this time, the first expansion valve is in a throttling state, and the second expansion valve is in a closed state. The low-temperature liquid refrigerant passes through the first expansion valve and the second heat exchanger to become a low-temperature, low-pressure gaseous refrigerant, and finally returns to the compressor assembly to form a complete refrigeration cycle.

[0021] When the power components of the vehicle refrigerator are at a high temperature, the second expansion valve is adjusted to be in a throttling state. A portion of the low-temperature liquid refrigerant before the inlet of the first expansion valve will flow into the branch and be converted into low-temperature, low-pressure gaseous refrigerant through the second expansion valve. The temperature of this portion of refrigerant is lower than that of the low-temperature gaseous refrigerant at the outlet of the evaporator. The two portions of refrigerant mix, which lowers the overall refrigerant temperature and is drawn in through the suction port of the compressor assembly to cool the power components of the vehicle refrigerator more thoroughly.

[0022] Based on the actual temperature of the power components inside the compressor, the temperature change of the refrigerant can be controlled by adjusting the opening degree of the first expansion valve and the second expansion valve, so that the power components can be cooled down quickly, reducing the risk of overheating shutdown and improving the working stability and service life of the vehicle compressor. Attached Figure Description

[0023] Figure 1 This is a circuit connection diagram of the vehicle-mounted compressor system provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the vehicle-mounted compressor system provided in this embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the working process of the vehicle-mounted compressor system provided in this embodiment of the utility model.

[0026] In the diagram: 1. Compressor assembly; 2. First heat exchanger; 3. First expansion valve; 4. Second heat exchanger; 5. Second expansion valve; 6. Compressor side cover; 7. Exhaust port; 8. Compressor housing; 9. Intake port; 10. Controller housing; 11. Piping; 12. Electrical connectors; 13. Controller circuit board; 14. Power components. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] like Figure 1-3 As shown, an embodiment of this utility model provides an on-board compressor system, including a compressor assembly 1, a first heat exchanger 2, a second heat exchanger 4, a first expansion valve 3, and a second expansion valve 5. The compressor assembly 1 has an intake port 9 and an exhaust port 7. The intake port 9 is used to draw in low-temperature, low-pressure refrigerant, and the exhaust port 7 is used to discharge high-temperature, high-pressure refrigerant. The first heat exchanger 2 is connected to the compressor's exhaust port 7, and the second heat exchanger 4 is connected to the compressor's intake port 9. The first expansion valve 3 is disposed between the first heat exchanger 2 and the second heat exchanger 4. The compressor assembly 1, the first heat exchanger 2, the first expansion valve 3, and the second heat exchanger 4 sequentially form a circuit. The inlet end of the second expansion valve 5 is disposed on the inlet side of the first expansion valve 3, and the outlet end of the second expansion valve 5 is disposed on the outlet side of the second heat exchanger 4 and connected to the intake side of the compressor assembly 1 through a pipe 11. Specifically, the first heat exchanger 2 is a condenser, and the second heat exchanger 4 is an evaporator.

[0032] The compressor assembly 1 draws in low-temperature, low-pressure refrigerant through its suction port 9, and after compression, discharges high-temperature, high-pressure refrigerant through its discharge port 7. The high-temperature, high-pressure refrigerant first enters the first heat exchanger 2, where it undergoes heat exchange and transforms into low-temperature liquid refrigerant. At this time, the first expansion valve 3 is in a throttling state, and the second expansion valve 5 is in a closed state. The low-temperature liquid refrigerant passes through the first expansion valve 3 and the second heat exchanger 4 and transforms into low-temperature, low-pressure gaseous refrigerant, which finally returns to the compressor assembly 1, forming a complete refrigeration cycle.

[0033] When the power element 14 of the vehicle refrigerator reaches a high temperature and the first preset temperature, the second expansion valve 5 is adjusted to be in a throttling state. A portion of the low-temperature liquid refrigerant before the inlet of the first expansion valve 3 flows into the branch and is converted into low-temperature low-pressure gaseous refrigerant through the second expansion valve 5. The temperature of this portion of refrigerant is lower than the temperature of the low-temperature gaseous refrigerant at the outlet of the second heat exchanger 4. The two portions of refrigerant mix, which lowers the overall refrigerant temperature and is drawn in through the suction port 9 of the compressor assembly 1 to cool the power element 14 of the vehicle refrigerator more fully.

[0034] Based on the actual temperature of the power element 14 inside the compressor, the temperature change of the refrigerant can be controlled by adjusting the opening degree of the first expansion valve 3 and the second expansion valve 5, so that the power element 14 can be cooled down quickly, reducing the risk of overheating shutdown and improving the working stability and service life of the vehicle compressor.

[0035] It should be noted that the phase state of the refrigerant in the heat exchanger can be changed by adjusting the opening of the expansion valve. The expansion valve is existing technology in this field and will not be discussed further here.

[0036] Furthermore, the compressor assembly 1 includes a compressor housing 8 and a compressor side cover 6, which are detachably connected. An intake port 9 is located on the compressor housing 8, and an exhaust port 7 is located on the compressor side cover 6.

[0037] By placing the intake port 9 and exhaust port 6 separately in the compressor housing 8 and compressor side cover 6, independent intake and compression chambers can be formed within the compressor housing 8, avoiding airflow interference. Furthermore, the compressor housing 8 and compressor side cover 6 are detachably connected. When it is necessary to inspect the exhaust port 7 or the exhaust mechanism inside the compressor side cover 6, it is not necessary to disassemble the entire compressor housing 8; only the compressor side cover 6 needs to be removed to complete component replacement or cleaning, reducing maintenance time and costs.

[0038] Optionally, the compressor housing 8 and the compressor side cover 6 are connected by bolts or by snap-fit.

[0039] Furthermore, the second expansion valve 5 is integrated with the compressor housing 8. This design eliminates the need for piping connections (such as flanges and joints) and mounting brackets required for traditional independent installations, reducing the number of components and making the overall system size smaller and more compact.

[0040] Furthermore, the vehicle compressor system also includes a controller assembly, which includes a controller housing 10 and a controller circuit board 13 disposed within the controller housing 10. The controller housing 10 is fixedly connected to the compressor housing 8. The controller circuit board 13 is equipped with a power element 14. The second expansion valve 5 is electrically connected to the controller circuit board 13 via an electrical connector 12.

[0041] The second expansion valve 5 is electrically connected to the controller circuit board 13. The controller circuit board 13 can control the opening degree of the second expansion valve 5. When the actual power element 14 is at a high temperature, adjusting the second expansion valve 5 to a throttling state can make the branch where the second expansion valve 5 is located open, thereby reducing the overall refrigerant temperature and providing more sufficient cooling for the power element 14 of the vehicle refrigerator, reducing the risk of overheating shutdown.

[0042] For example, such as Figure 2As shown, the second expansion valve 5 is fixedly mounted on the controller housing 10. In other embodiments, the second expansion valve 5 is fixedly mounted on the compressor housing 8.

[0043] Furthermore, the vehicle compressor system also includes a temperature detection unit, which is located inside the controller housing 10. The temperature detection unit is used to detect whether the temperature of the power element 14 has reached the preset temperature.

[0044] The temperature detection unit is electrically connected to the controller circuit board 13. The temperature detection unit can detect the temperature of the power component 14. If the temperature reaches a first preset temperature, the temperature detection unit transmits a signal to the controller circuit board 13. The controller circuit board 13 then controls the second expansion valve 5 to adjust to a throttling state, opening the branch containing the second expansion valve 5. This reduces the overall refrigerant temperature, providing more thorough cooling to the power component 14 of the vehicle refrigerator, reducing the risk of overheating shutdown, and improving the operational stability and lifespan of the vehicle compressor. If the temperature is not higher than the second preset temperature, the temperature detection unit transmits a signal to the controller circuit board 13, which then controls the second expansion valve 5 to adjust to a closed state, disconnecting the branch containing the second expansion valve 5. For example, the temperature detection unit is a temperature sensor.

[0045] Furthermore, the controller housing 10 and the compressor housing 8 are integrated into one unit. This integrated housing combines two originally separate components into a single unit, reducing assembly gaps and connecting parts between the housings, significantly reducing the overall system size, resulting in a compact structure that is more suitable for the limited installation space in vehicle environments.

[0046] The working process of the vehicle-mounted compressor system provided in the embodiments of this utility model is as follows:

[0047] Reference Figure 3After the vehicle compressor starts, the temperature sensor monitors the temperature of the power element 14 inside the controller housing 10 in real time. When the compressor speed is low, the power element 14 is often difficult to cool sufficiently, leading to overheating and shutdown. When the temperature sensor detects that the temperature of the power element 14 is higher than the first preset temperature, the controller circuit board 13 controls the second expansion valve 5 to open and enter a throttling state. A portion of the subcooled liquid refrigerant before the inlet of the first expansion valve 3 flows into the branch where the second expansion valve 5 is located and is converted into low-temperature, low-pressure gaseous refrigerant through the second expansion valve 5. The temperature of this portion of refrigerant is lower than the temperature of the low-temperature gaseous refrigerant at the outlet of the second heat exchanger 4. The two portions of refrigerant mix, causing the overall refrigerant temperature to decrease and be drawn in from the suction port 9 of the compressor assembly 1 to more fully cool the power element 14 inside the controller housing 10. When the temperature sensor detects that the temperature of the power element 14 is not higher than the second preset temperature, the controller circuit board 13 controls the second expansion valve 5 to close, the branch is disconnected, and the circuit switches to the conventional refrigeration circuit. With the above structure, when the compressor speed is low and the temperature of the power element 14 inside the controller housing 10 is too high, the power element 14 can be cooled down quickly, reducing the risk of overheating shutdown.

[0048] Understandably, the first preset temperature is higher than the second preset temperature. When the temperature of the power element 14 reaches the first preset temperature, the bypass branch is opened, and the power element 14 can be rapidly cooled by mixing the two parts of refrigerant. When the temperature of the power element 14 after cooling is not higher than the second preset temperature, the bypass branch is closed, and the power element 14 can be cooled by the conventional refrigeration circuit.

[0049] An embodiment of this utility model provides a vehicle including the above-described vehicle-mounted compressor system.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vehicle-mounted compressor system, characterized in that, include: The compressor assembly (1) has an intake port (9) and an exhaust port (7), the intake port (9) is used to draw in low-temperature and low-pressure refrigerant, and the exhaust port (7) is used to discharge high-temperature and high-pressure refrigerant. A first heat exchanger (2) and a second heat exchanger (4), wherein the first heat exchanger (2) is connected to the exhaust port (7) of the compressor, and the second heat exchanger (4) is connected to the intake port (9) of the compressor; The first expansion valve (3) is disposed between the first heat exchanger (2) and the second heat exchanger (4), and the compressor assembly (1), the first heat exchanger (2), the first expansion valve (3) and the second heat exchanger (4) form a circuit in sequence; The second expansion valve (5) has its inlet end located at the inlet side of the first expansion valve (3) and its outlet end located at the outlet side of the second heat exchanger (4) and connected to the suction side of the compressor assembly (1) via a pipeline (11).

2. The vehicle-mounted compressor system according to claim 1, characterized in that, The compressor assembly (1) includes a compressor housing (8) and a compressor side cover (6), which are detachably connected. The intake port (9) is located on the compressor housing (8), and the exhaust port (7) is located on the compressor side cover (6).

3. The vehicle-mounted compressor system according to claim 2, characterized in that, The vehicle compressor system also includes a controller assembly, which includes a controller housing (10) and a controller circuit board (13) disposed in the controller housing (10). The controller housing (10) is fixedly connected to the compressor housing (8). The controller circuit board (13) is equipped with a power element (14). The second expansion valve (5) is electrically connected to the controller circuit board (13) through an electrical connector (12).

4. The vehicle-mounted compressor system according to claim 3, characterized in that, The vehicle compressor system also includes a temperature detection unit, which is located inside the controller housing (10). The temperature detection unit is used to detect whether the temperature of the power element (14) has reached a preset temperature.

5. The vehicle-mounted compressor system according to claim 3, characterized in that, The second expansion valve (5) is fixedly installed on the controller housing (10).

6. The vehicle-mounted compressor system according to claim 2, characterized in that, The second expansion valve (5) is fixedly installed on the compressor housing (8).

7. The vehicle-mounted compressor system according to claim 2, characterized in that, The second expansion valve (5) and the compressor housing (8) are integrated into one unit.

8. The vehicle-mounted compressor system according to claim 3, characterized in that, The controller housing (10) and the compressor housing (8) are integrated into one unit.

9. A vehicle, characterized in that, Includes the vehicle-mounted compressor system as described in any one of claims 1 to 8.

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