Integrated single cooler and commercial vehicle

Abstract

The utility model provides a kind of integrated single cooler and commercial vehicle, it is related to commercial vehicle technical field.The integrated single cooler includes: cavity shell, expansion valve, evaporator core, evaporative fan and apron;Expansion valve and evaporator core are installed in cavity shell, and expansion valve is in fluid communication with evaporator core;Apron is covered in the top opening of cavity shell, evaporative fan is installed in the outside of cavity shell, and evaporative fan is towards evaporator core, realizes the integrated layout of single cooler.The single cooler is designed by high integration, significantly reduces the installation space requirement of single cooler, improves the arrangement flexibility in small space such as the cab of commercial vehicle.Especially suitable for high space utilization rate requirement medium and heavy truck, passenger car and other commercial vehicle type, effectively solve the problem that traditional single cooler structure is dispersed, occupies large space, layout difficulty, with compact structure, stable performance, strong adaptability and other advantages.

Description

TECHNICAL FIELD

[0001] The utility model relates to commercial vehicle technical field especially is related to an integrated single cooler and commercial vehicle. BACKGROUND

[0002] As the core equipment of logistics transportation and engineering construction, the man-machine engineering design and comfort level of the cab of the commercial vehicle not only concerns the work efficiency of the driver, but also directly affects the professional health and safety. With the rapid development of vehicle electronic integration technology, the driving area of the modern commercial vehicle needs to integrate diversified electronic equipment modules including a multifunctional instrument display system, a vehicle control unit (VCU), an integrated wire harness system and an intelligent temperature control device. This technical evolution makes the internal space structure of the cockpit present a highly complex feature, especially the equipment density problem of the instrument panel area is most prominent.

[0003] The current commercial vehicle refrigeration system generally adopts a front-mounted architecture design, that is, key heat exchange components such as an evaporator assembly and an electronic expansion valve are arranged in the limited structural space behind the instrument panel. This design scheme needs to be coordinated with the existing functional modules such as the steering mechanism assembly, the wire harness routing channel, and the electronic control unit (ECU) installation cabin in three-dimensional space. In view of the fact that the commercial vehicle cab has been compromised in multiple spaces during the design stage to meet the functional requirements and safety standards, the transverse layout width and the longitudinal installation depth of the instrument panel area are both significantly constrained. When implementing the refrigeration system installation or upgrading, there are generally technical bottlenecks such as pipeline laying conflicts and component installation interference. These problems not only restrict the energy efficiency optimization of the refrigeration system, but also form a major challenge to the convenience of later maintenance operations. SUMMARY

[0004] The utility model aims at providing an integrated single cooler and commercial vehicle, which realizes the integrated layout of the single cooler, has the technical advantages of small space occupation and high installation and arrangement flexibility, and is especially suitable for the commercial vehicle driving area with limited layout space.

[0005] In the first aspect, the utility model provides an integrated single cooler, which comprises a cavity shell, an expansion valve, an evaporator core, an evaporative fan and a cover plate. The expansion valve and the evaporator core are both installed in the cavity shell, and the expansion valve is in fluid communication with the evaporator core. The cover plate covers the top opening of the cavity shell, the evaporative fan is installed on the outside of the cavity shell, and the evaporative fan faces the evaporator core.

[0006] In combination with the first aspect, the utility model provides a first possible implementation manner of the first aspect, wherein the front end of the cavity shell is provided with an air inlet, and the evaporative fan sends air to the evaporator core through the air inlet. The rear end of the cavity shell is provided with an air outlet.

[0007] In combination with the first possible implementation manner of the first aspect, the utility model provides a second possible implementation manner of the first aspect, wherein the air inlet is provided with a filter screen or a grating structure for blocking dust and foreign matters from entering the cavity shell.

[0008] In combination with the first aspect, the utility model provides a third possible implementation manner of the first aspect, wherein the cavity shell is provided with a flow guide plate or a duct structure for guiding airflow to uniformly flow through the effective heat exchange part of the evaporator core.

[0009] In combination with the first aspect, the utility model provides a fourth possible implementation manner of the first aspect, wherein the evaporator core adopts a multi-channel parallel flow structure, and the multi-channel parallel flow structure comprises a pipe and a fin connected to the pipe.

[0010] In combination with the first aspect, the utility model provides a fifth possible implementation manner of the first aspect, wherein a temperature sensor is installed at the refrigerant outlet of the evaporator core, and the temperature sensor and the expansion valve are respectively connected to a controller.

[0011] In combination with the fifth possible implementation manner of the first aspect, the utility model provides a sixth possible implementation manner of the first aspect, wherein the controller is further connected to an in-vehicle temperature sensor, an ambient humidity sensor and a driver temperature setting device.

[0012] In the second aspect, the utility model provides a commercial vehicle provided with the integrated single cooler as described in the first aspect, and the single cooler acts on the driving area of the commercial vehicle.

[0013] In combination with the second aspect, the utility model provides a first possible implementation manner of the second aspect, wherein the expansion valve and the defroster are in fluid communication through a refrigerant pipe.

[0014] In combination with the first possible implementation manner of the second aspect, the utility model provides a second possible implementation manner of the second aspect, wherein the refrigerant pipe is divided into a first branch and a second branch, the first branch is connected to the expansion valve, and the second branch is connected to the defroster.

[0015] In combination with the first possible implementation manner of the second aspect, the utility model provides a third possible implementation manner of the second aspect, wherein the defroster is arranged apart from the single cooler.

[0016] In conjunction with the first possible implementation of the second aspect, this utility model provides a fourth possible implementation of the second aspect, wherein the outlet end of the defroster is connected to a first return pipe, the outlet end of the evaporator core is connected to a second return pipe, and both the first return pipe and the second return pipe are connected to a refrigerant return pipe.

[0017] The present invention provides the following advantages: both the expansion valve and the evaporator core are installed inside the cavity shell, and the expansion valve and the evaporator core are in fluid communication. The cover plate is closed at the top opening of the cavity shell, and the evaporator fan is installed on the outside of the cavity shell and faces the evaporator core. This realizes a single-cooler integrated layout, which has the technical advantages of small space occupation and high installation flexibility. It is especially suitable for the driving area of ​​commercial vehicles with limited layout space.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 Exploded view of an integrated single cooler provided in an embodiment of this utility model; Figure 2 A schematic diagram of an air conditioning system for a commercial vehicle provided in an embodiment of this utility model.

[0021] Icons: 100-Cavity shell; 101-Air inlet; 102-Air outlet; 200-Expansion valve; 300-Evaporator core; 301-Second return pipe; 400-Evaporator fan; 500-Cover plate; 600-Defroster; 601-First return pipe; 700-Refrigerant pipe; 701-First branch; 702-Second branch; 800-Refrigerant return pipe. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0025] like Figure 1 and Figure 2 As shown, the integrated single-cooler provided in this embodiment of the utility model is suitable for the refrigeration module in the air conditioning system of commercial vehicles, and is particularly used for independent temperature control and adjustment of the driver's area. The integrated single-cooler includes main components such as a cavity shell 100, an expansion valve 200, an evaporator core 300, an evaporator fan 400, a cover plate 500, and a controller.

[0026] The cavity shell 100 is made of high-strength engineering plastics or lightweight aluminum alloys through injection molding or die casting, possessing good mechanical strength, vibration resistance, and thermal insulation properties. Its internal space is optimized using three-dimensional fluid dynamics simulation (CFD) to ensure the shortest airflow path and minimum resistance, while avoiding vortex zones and dead zones. The outer surface of the cavity shell 100 is equipped with reinforcing ribs to improve overall rigidity and aid in heat dissipation and noise reduction. The wall thickness of the cavity shell 100 is 2.5mm to 4mm, and the thickness of the reinforcing ribs is 1.8mm to 2.5mm. When using an aluminum alloy shell, the surface must undergo anodizing treatment (oxide layer thickness 8 to 12μm); when using an engineering plastic shell, a flame-retardant fireproof coating can be applied.

[0027] In this embodiment, both the expansion valve 200 and the evaporator core 300 are installed inside the cavity shell 100 and are fluidly connected through a refrigerant pipeline. Specifically, after the high-pressure liquid refrigerant is discharged from the external compressor, it first enters the condenser to complete the heat dissipation process, and then enters the expansion valve 200 for throttling and pressure reduction to form a low-temperature, low-pressure gas-liquid mixture of refrigerant, which is then transported to the evaporator core 300 for heat absorption and evaporation.

[0028] In this embodiment, the integrated single-cooler adopts a modular design concept, highly integrating key components in the refrigeration cycle (including expansion valve 200, evaporator core 300, evaporator fan 400, temperature sensor, controller, etc.) into a single integrated housing 100, forming a standardized, replaceable, independent air conditioning sub-module. This module can be quickly installed into the reserved space inside the commercial vehicle cab via standardized interfaces (such as electrical connection terminals, refrigerant quick-connect connectors, and duct flanges), significantly reducing the complexity of vehicle assembly and on-site commissioning time.

[0029] To facilitate maintenance and repair, a detachable access door is provided on one side of the housing 100. Combined with the internal modular layout, this allows technicians to replace the expansion valve 200, sensor, or fan motor without disassembling the entire unit.

[0030] Furthermore, the evaporator core 300 adopts a multi-channel parallel flow structure, including multiple flat aluminum tubes and corrugated fins welded between adjacent tubes. This structure offers advantages such as high heat exchange efficiency, compact size, and light weight, making it suitable for the limited installation space in commercial vehicles. The fin surface can be treated with a hydrophilic or anti-corrosion coating to improve anti-condensation performance and durability.

[0031] In an optional embodiment, the flat aluminum tubes preferably have a diameter of 1.5 mm to 3 mm and a wall thickness of 0.2 mm to 0.4 mm. They are internally provided with spiral internal threads or turbulence fins to enhance the turbulence effect on the refrigerant side and improve the heat transfer coefficient. Corrugated hydrophilic aluminum fins are welded between adjacent flat tubes, with a fin spacing of 1.8 mm to 2.5 mm, balancing heat exchange efficiency and anti-clogging capability.

[0032] To further enhance operational stability in low-temperature and high-humidity environments, the fin surface is coated with a nanoscale hydrophobic or hydrophilic composite coating: the windward side is treated with superhydrophilic coating to promote the uniform spread of condensate and its rapid discharge along the fin surface; the leeward side is treated with a micro-hydrophobic layer to reduce the impact of residual water film on subsequent heat exchange. In addition, the coating contains antibacterial and antifungal components (such as silver ion-doped titanium dioxide), effectively inhibiting microbial growth and improving in-vehicle air quality.

[0033] Furthermore, the cavity shell 100 has an air inlet 101 at the front end and an air outlet 102 at the rear end. The evaporator fan 400 is installed on the outside of the cavity shell 100 and is positioned opposite to the air inlet 101. When the evaporator fan 400 is running, it drives external air to be drawn into the cavity shell 100 through the air inlet 101, passes through the evaporator core 300 to complete heat exchange, and then blows out cold air from the air outlet 102 to cool the cab.

[0034] To prevent dust, leaves, or other foreign objects from entering the cavity 100 with the airflow and affecting heat exchange performance or clogging the fin gaps, a filter screen or grille structure is provided at the air inlet 101. Preferably, the filter screen is removable for easy regular cleaning and maintenance.

[0035] To further optimize airflow organization and improve heat exchange uniformity, the cavity shell 100 is also equipped with a guide plate or a shaped air duct structure to guide the air introduced by the evaporator fan 400 to be evenly distributed and fully flow through the effective heat exchange area of ​​the evaporator core 300, avoiding local short circuits or dead zones, thereby improving the overall heat exchange efficiency.

[0036] In a preferred embodiment, a composite airflow guiding structure system is provided inside the cavity shell 100, including: a front guide plate assembly, a flow equalization grille, and a rear guide shroud. The front guide plate assembly is located behind the air inlet 101 and is arc-shaped, guiding the incoming airflow to a smooth turn, reducing impact loss. The rear guide shroud is located between the outlet of the evaporator fan 400 and the evaporator core 300, and consists of multiple inclined guide vanes, forcing the airflow to diffuse laterally and preventing central flow deviation. The rear guide shroud is arranged around the air outlet 102, its shape matching the contour of the cab ceiling or dashboard, achieving seamless air delivery. The combined effect of these structures controls the wind speed difference across different areas of the evaporator core 300 to within ±10%, significantly improving heat exchange uniformity and preventing localized frost formation or overheating.

[0037] In addition, sound-absorbing materials (such as porous aluminum foam or fiberglass felt) can be pasted on the inner wall of the cavity, and an unequal pitch blade structure can be adopted in the design of the fan impeller to disperse the aerodynamic noise spectrum and control the overall operating noise below 45dB(A) to meet the noise reduction requirements of high-end commercial vehicles.

[0038] See Figure 1 and Figure 2 As shown, in this embodiment, the cover plate 500 covers the opening at the top of the cavity shell 100, serving a sealing and protective function to prevent rainwater intrusion and reduce noise leakage. A sealing gasket is provided between the cover plate 500 and the cavity shell 100 to ensure the airtightness and waterproofness of the connection.

[0039] In terms of control, a temperature sensor is installed at the refrigerant outlet of the evaporator core 300 to monitor the superheat of the gaseous refrigerant in real time. This temperature sensor, along with the expansion valve 200, is connected to an electronic controller. Based on the received superheat signal, the controller dynamically adjusts the opening of the expansion valve 200 to achieve precise control of the refrigerant flow and ensure stable and efficient system operation.

[0040] Furthermore, the controller is also connected to in-vehicle temperature sensors, ambient humidity sensors, and temperature setting devices on the driver's control panel. By comprehensively collecting the above-mentioned multi-source environmental parameters and user settings, the controller executes an intelligent temperature control algorithm to automatically adjust the cooling output intensity, achieving a balance between comfort and energy efficiency.

[0041] The aforementioned intelligent temperature control algorithm not only enables basic superheat closed-loop control but also integrates a multi-variable fusion intelligent regulation algorithm, specifically including: (1) Dynamic adjustment strategy for superheat The controller collects refrigerant temperature and pressure signals at the evaporator core outlet 300 in real time, calculates the actual superheat value, and compares it with the preset target value (usually 5~7℃). It then uses a PID or fuzzy control algorithm to output a PWM signal to adjust the opening of the expansion valve 200. When a sudden load change is detected (such as direct sunlight or frequent opening of car doors), a feedforward compensation mechanism is introduced to adjust the refrigerant supply in advance and shorten the response time.

[0042] (2) Multi-source environmental perception and predictive control The controller receives the following sensor information: cabin temperature sensor (located at the driver's head height), relative humidity sensor, solar radiation intensity sensor, vehicle speed and ambient temperature signal (from CAN bus).

[0043] Based on the above data, the controller constructs a thermal comfort model (such as PMV / PPD index estimation) and adaptively adjusts the cooling intensity in conjunction with the target temperature set by the driver. For example, it appropriately reduces the outlet air temperature under strong sunlight conditions and moderately shuts down some cooling circuits during low-load periods to save energy.

[0044] (3) Self-learning user preference memory function The controller has a built-in non-volatile storage unit that records the driver's frequently used settings (such as rapid cooling in the morning and constant temperature cruise at noon) and automatically recommends the optimal operating parameters based on usage frequency, thereby improving the human-machine interaction experience.

[0045] It is worth noting that, in a preferred embodiment of this utility model, the expansion valve 200 is also fluidly connected to the defroster 600 via the refrigerant pipe 700.

[0046] Specifically, the refrigerant pipe 700 branches off from the independent refrigerant supply line to form a first branch 701 and a second branch 702: the first branch 701 is connected to the expansion valve 200 to supply the evaporator core 300; the second branch 702 extends to the defrost 600 located in the windshield area or other key locations to provide it with throttled low-temperature refrigerant for rapid dehumidification or defrosting.

[0047] The defroster 600 is spaced apart from the integrated single-cooler body and is typically located in the upper front area of ​​the cab, near the inside of the windshield. Its operating mode can be automatically started and stopped by the controller according to environmental conditions.

[0048] In addition, the refrigerant outlet of the defroster 600 is connected to the first return pipe 601, while the refrigerant outlet of the evaporator core 300 is connected to the second return pipe 301. The first return pipe 601 and the second return pipe 301 merge and are connected to the same refrigerant return pipe 800, ultimately sending the gaseous refrigerant back to the compressor inlet, forming a complete dual-path refrigerant circulation system.

[0049] Furthermore, the specific implementation of the defroster 600 includes, but is not limited to: Embedded air duct type defrosting unit: installed in the air vent below the windshield, cold air blows on the inner surface of the glass, quickly lowering the dew point and eliminating fog; Attached cold plate type defroster: It adopts aluminum micro evaporator coils that are closely attached to the inner metal frame of the glass, and achieves localized cooling and defrosting through heat conduction; Combined defrosting device: integrates PTC heating element and refrigerant evaporator, the controller determines the start of a combined defrosting process of condensation followed by drying based on temperature and humidity.

[0050] In addition, the first return pipe 601 of the defroster 600 and the second return pipe 301 of the evaporator core 300 are connected to a unified refrigerant return pipe 800. To prevent interference caused by fluctuations in the flow rates of the two return refrigerants, the following structure can be added upstream of the junction point: One-way check valves: installed on the first return pipe 601 and the second return pipe 301 respectively to prevent backflow and refrigerant backflow; Oil-gas separator: Located near the compressor inlet on the refrigerant return pipe 800, it ensures that the lubricating oil returns smoothly to the compressor crankcase along with the gaseous refrigerant, extending the equipment's lifespan; Pressure balancing section: The return main pipeline is designed with a gradually expanding structure to reduce flow velocity, reduce pressure drop, and ensure smooth gas return in the system.

[0051] Furthermore, the entire refrigerant piping system uses rigid copper or aluminum pipes with rubber hoses for transition connections. All joints are sealed with O-rings and subjected to helium leak testing to ensure that the system operates without leaks for a long period of time.

[0052] In an optional embodiment, a heat recovery device may be added between the evaporator core 300 and the defroster 600 to convert waste heat into useful thermal energy, such as for preheating the engine or heating the seats in the driver's cab.

[0053] In addition, to improve equipment reliability, redundant designs can be implemented for pipe fittings (such as expansion valve 200), and dual or multi-path parallel configurations can be adopted to ensure normal system operation even if one path fails.

[0054] This invention achieves a compact structure and standardized assembly by highly integrating key components such as the expansion valve 200, evaporator core 300, and evaporator fan 400 within the cavity shell 100, significantly reducing the difficulty of arranging and maintaining the vehicle's air conditioning system. Simultaneously, by introducing a design that shares a refrigerant path with the defroster 600, it fully utilizes the low-temperature resources in the refrigeration cycle, improving energy efficiency, making it particularly suitable for commercial vehicles operating in cold or rainy regions.

[0055] The commercial vehicle provided in this embodiment uses the aforementioned integrated single-cooler, which works in conjunction with the vehicle's air conditioning system. When the system starts, the compressor discharges high-temperature, high-pressure gaseous refrigerant, which is cooled to liquid state by the condenser before entering the integrated single-cooler. The refrigerant first passes through the expansion valve 200 for throttling and pressure reduction, forming a low-temperature, low-pressure gas-liquid mixture. This mixture then enters the evaporator core 300 to absorb heat from the air and complete the evaporation process. Simultaneously, the evaporator fan 400 draws in outside air, which is guided evenly across the evaporator fins by an optimized flow guide structure, achieving efficient heat exchange. The cooled air is then delivered to the driver's area through the air outlet 102. In cold or high-humidity environments, when the controller determines that the defrosting function needs to be activated, a portion of the throttled refrigerant is delivered to the defroster 600 via the second branch 702. Utilizing its low-temperature characteristics, the defroster rapidly reduces the temperature of the inner surface of the windshield, causing water vapor to condense and precipitate. This, combined with subsequent warm air or natural convection, achieves defogging and defrosting. After evaporation, the gaseous refrigerant is merged through its respective return pipes and then returns to the compressor after passing through the water-gas separator, completing the closed-loop cycle.

[0056] In summary, the integrated single-cooler provided by this utility model not only possesses excellent refrigeration performance and structural reliability, but also achieves multi-functional integration and intelligent control through multi-component collaborative control and refrigerant path optimization, meeting the dual demands of modern commercial vehicles for driving comfort and energy conservation and environmental protection. Furthermore, in addition to commercial vehicles such as medium and heavy-duty trucks, buses, and construction machinery cabs, the integrated single-cooler described in the above embodiments can also be extended to new energy special-purpose vehicles, special-operation vehicles, intelligent cabin pre-air conditioning systems, and hydrogen energy commercial vehicle thermal management systems. During installation, the integrated single-cooler can be mounted on the top of the driver's area, with the air outlet 102 facing behind the driver to avoid direct cold air blowing and causing discomfort to the driver.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated single-cooler, characterized in that, include: The cavity shell (100), expansion valve (200), evaporator core (300), evaporator fan (400) and cover plate (500); The expansion valve (200) and the evaporator core (300) are both installed inside the cavity shell (100), and the expansion valve (200) is in fluid communication with the evaporator core (300); The cover plate (500) covers the top opening of the cavity shell (100), the evaporator fan (400) is installed on the outside of the cavity shell (100), and the evaporator fan (400) faces the evaporator core (300).

2. The integrated single-cooler according to claim 1, characterized in that, The cavity shell (100) is provided with an air inlet (101) at the front end, and the evaporator fan (400) sends air to the evaporator core (300) through the air inlet (101); An air outlet (102) is provided at the rear end of the cavity shell (100).

3. The integrated single-cooler according to claim 2, characterized in that, The air inlet (101) is equipped with a filter or grille structure to prevent dust and foreign objects from entering the cavity (100).

4. The integrated single-cooler according to claim 1, characterized in that, The cavity shell (100) is provided with a guide plate or air duct structure to guide the airflow to flow evenly through the effective heat exchange part of the evaporator core (300).

5. The integrated single-cooler according to claim 1, characterized in that, The evaporator core (300) adopts a multi-channel parallel flow structure, which includes pipes and fins connecting the pipes.

6. The integrated single-cooler according to claim 1, characterized in that, A temperature sensor is installed at the refrigerant outlet of the evaporator core (300), and the temperature sensor and the expansion valve (200) are respectively connected to the controller.

7. The integrated single-cooler according to claim 6, characterized in that, The controller is also connected to the in-vehicle temperature sensor, the ambient humidity sensor, and the driver's temperature setting device.

8. A commercial vehicle, characterized in that, The commercial vehicle is equipped with an integrated single-cooler as described in any one of claims 1 to 7, the single-cooler acting on the driver's area of ​​the commercial vehicle.

9. The commercial vehicle according to claim 8, characterized in that, The expansion valve (200) and the defrost unit (600) are in fluid communication via a refrigerant pipe (700).

10. The commercial vehicle according to claim 9, characterized in that, The refrigerant pipe (700) is split into a first branch (701) and a second branch (702). The first branch (701) is connected to the expansion valve (200), and the second branch (702) is connected to the defrost unit (600).

11. The commercial vehicle according to claim 9, characterized in that, The defrost unit (600) is spaced apart from the integrated single cooler.

12. The commercial vehicle according to claim 9, characterized in that, The outlet end of the defrost unit (600) is connected to a first return pipe (601), and the outlet end of the evaporator core (300) is connected to a second return pipe (301). Both the first return pipe (601) and the second return pipe (301) are connected to the refrigerant return pipe (800).

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