New energy commercial refitted refrigerator car refrigerating unit

Abstract

The utility model relates to a new energy commercial refitted refrigerator car refrigerating unit, which relates to the technical field of new energy refrigerator cars, and comprises an inner machine assembly, an outer machine assembly, a pipeline assembly and a high-voltage junction box, the outer machine assembly comprises a refrigerating part integration component and a condenser, the refrigerating part integration component comprises a base and a scroll compressor arranged on the base, and the condenser is arranged on the base. The base is arranged below a chassis of the vehicle body and located on the side edge of the power battery, the condenser is arranged below the chassis of the vehicle body and located behind the power battery, and the indoor unit assembly, the scroll compressor and the condenser are connected through the pipeline assembly. The outdoor unit assembly is divided into the refrigeration part integration assembly and the condenser which are installed respectively, the height of the whole vehicle is not increased, heat dissipation is facilitated, installation and maintenance are facilitated, the vortex compressor is controlled to work through the high-voltage junction box arranged below the chassis of the vehicle body, the wiring arrangement of pipelines is simplified, and the working efficiency is improved. In this way, the convenience of installation and maintenance of the refrigerating unit of the new energy commercial refitted refrigerator car is improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy refrigerated vehicle technology, and in particular to a refrigeration unit for a new energy commercial modified refrigerated vehicle. Background Technology

[0002] With the development of cold chain transportation, refrigerated trucks are commonly converted from new energy vehicles, especially the Chery Karry Jiangtun E7 and Foton EV series. In the current market, refrigeration units of refrigerated trucks converted from the above-mentioned new energy vehicle series include an indoor unit assembly located inside the truck body and an outdoor unit assembly located outside the truck body. There are usually two ways to install the outdoor unit assembly. The first is to integrate the refrigeration outdoor unit assembly into one piece and set it on the roof or under the chassis of the refrigerated truck, such as the Shanghai Maxus van refrigerated truck and Jinbei van refrigerated truck. The second is to disassemble the refrigeration outdoor unit assembly into individual parts and install them separately in various parts of the vehicle body.

[0003] However, designing the integrated outdoor unit as a single unit results in a large volume, and installing it on the roof increases the overall vehicle height, limiting the passageway to and from the cold storage. Furthermore, the outdoor unit's proximity to the driver's cab generates significant noise and vibration. Under the chassis, due to limitations imposed by the power battery, there is insufficient space to install a composite integrated outdoor unit. On the other hand, dispersing the refrigeration unit components throughout the vehicle body is both disorganized and inconvenient for the storage, transportation, management, maintenance, and testing of numerous parts. Therefore, the convenience of installing and maintaining the refrigeration unit in new energy commercial refrigerated trucks is reduced. Utility Model Content

[0004] To improve the ease of installation and maintenance of refrigeration units for new energy commercial vehicles converted to refrigeration, this utility model provides a refrigeration unit for new energy commercial vehicles converted to refrigeration.

[0005] This application provides a refrigeration unit for a new energy commercial vehicle retrofit refrigeration truck, which adopts the following technical solution:

[0006] A refrigeration unit for a new energy commercial vehicle conversion refrigeration truck includes an inner unit assembly, an outer unit assembly, a piping assembly, and a high-voltage junction box. The inner unit assembly is located inside the insulated compartment of the vehicle body. The outer unit assembly includes an integrated refrigeration component assembly and a condenser. The integrated refrigeration component assembly includes a base and a scroll compressor. The base is located below the chassis of the vehicle body and next to the power battery. The scroll compressor is located on the base. The condenser is located below the chassis of the vehicle body and behind the power battery. The inner unit assembly, the scroll compressor, and the condenser are connected by the piping assembly. The high-voltage junction box is located on a beam below the chassis of the vehicle body. The high-voltage junction box has one input terminal and two output terminals. The input terminal is connected to the high-voltage terminal of the vehicle body's motor controller, and the two output terminals are respectively connected to the scroll compressor and the air conditioning compressor in the driver's cab of the vehicle body.

[0007] By adopting the above technical solution, the outdoor unit assembly is divided into two parts: a refrigeration component integrated assembly and a condenser. These are installed on the side and rear of the power battery under the vehicle chassis, respectively. This does not increase the overall height of the vehicle and facilitates installation and maintenance. The vehicle's motor controller controls the operation of the air conditioning compressor and scroll compressor through a high-voltage junction box located under the vehicle chassis, thereby controlling the working status of the indoor and outdoor unit assemblies. This simplifies the wiring layout and improves the convenience of installing and maintaining the refrigeration unit in new energy commercial refrigerated trucks.

[0008] Optionally, the base is detachably connected to the chassis of the vehicle body via a connecting bracket. The connecting bracket is fixed on the base and extends upward. The top of the connecting bracket is detachably connected to the chassis of the vehicle body. The connecting bracket has a clearance opening for pipes to pass through.

[0009] By adopting the above technical solution, the base and the chassis of the vehicle can be installed and disassembled as a whole through the connecting bracket. At the same time, the pipes used to connect the various components are run through the clearance opening, thereby reducing the probability of messy pipe and wiring harness layout and improving the convenience of outdoor unit assembly installation and maintenance.

[0010] Optionally, it also includes an oil-gas separator and a dryer bottle. The base is provided with a vertically extending mounting bracket. The oil-gas separator and the dryer bottle are vertically spaced on the mounting bracket. The oil-gas separator is connected to the scroll compressor through a pipeline assembly, and the dryer bottle is connected to the condenser and the indoor unit assembly through a pipeline assembly.

[0011] By adopting the above technical solution, the oil-gas separator and dryer bottle are integrated on the base using a mounting bracket, reducing the footprint of the refrigeration unit and facilitating installation and subsequent maintenance.

[0012] Optionally, the mounting bracket has an arc-shaped positioning groove that fits the outer surface of the drying bottle, and the mounting bracket also has multiple strip holes for easy connection of other external fasteners.

[0013] By adopting the above technical solution, the arc-shaped positioning groove facilitates the installation and positioning of the dryer bottle. Other fixing parts such as steel rings and clamps are connected to the external through the strip hole to position the dryer bottle and oil-gas separator, thereby improving the convenience of installation and positioning of the dryer bottle and oil-gas separator. The dryer bottle and oil-gas separator are set in two layers, which reduces the space occupied by the horizontal arrangement of the dryer bottle and oil-gas separator.

[0014] Optionally, the piping assembly includes a low-pressure pipe and a high-pressure pipe. The high-pressure pipe is connected to the output end of the scroll compressor, the oil-gas separator, the input side of the condenser, the output side of the condenser, the dryer bottle, and the indoor unit assembly. The low-pressure pipe is connected to the indoor unit assembly and the input end of the scroll compressor.

[0015] By adopting the above technical solution, the high-temperature and high-pressure refrigerant gas generated by the compression at the output end of the scroll compressor flows into the condenser in the high-pressure pipe and condenses into liquid. The high-temperature and high-pressure refrigerant liquid increases in volume after passing through the expansion valve, and the pressure and temperature drop sharply, forming a mist-like refrigerant liquid that enters the interior unit assembly. Since the boiling point of the refrigerant is much lower than the temperature inside the interior unit assembly, the refrigerant liquid evaporates into gas. During the evaporation process, a large amount of heat is absorbed from the insulated compartment of the vehicle body. Then, the low-temperature and low-pressure refrigerant vapor flows through the low-pressure pipe to the input end of the scroll compressor, thus returning to the inside of the scroll compressor and repeating the above process, thereby achieving the purpose of reducing the air temperature inside the insulated compartment of the vehicle body.

[0016] Optionally, the base is provided with pipe joints at both ends for installing low-pressure pipes and high-pressure pipes, and the base is provided with U-shaped holes for installing pipe joints.

[0017] By adopting the above technical solution, the U-shaped hole limits the pipe joint, thereby realizing the installation and positioning of high-pressure pipe and low-pressure pipe, improving the convenience of the pipeline routing of low-pressure pipe and high-pressure pipe, and thus improving the convenience of installation and maintenance of refrigeration units for new energy commercial modified refrigerated vehicles.

[0018] Optionally, the low-pressure pipe includes a metal pipe and a rubber hose, with the rubber hose coaxially sleeved on the metal pipe.

[0019] By adopting the above technical solution, the rubber hose wrapped around the metal pipe can reduce vibration and improve the service life of the pipeline.

[0020] Optionally, the low-pressure pipe is integrated with a liquid injection pipe connector, a return oil connector, and a filling valve connector.

[0021] By adopting the above technical solutions, the injection pipe connector can be connected to the capillary injection pipe, the return oil connector can be connected to the oil-gas separator for oil return, and the filling valve connector can be connected to the external pipeline for vacuuming or refrigerant charging, thereby improving the convenience of pipeline connection.

[0022] Optionally, the base has inward folds around its perimeter to form folded edges, and multiple drainage holes are provided on the bottom surface of the base. The sides of the base have multiple auxiliary holes for fixing pipes or wire harnesses.

[0023] By adopting the above technical solution, the base is made into a folded edge to increase the overall rigidity of the base. The drainage hole facilitates drainage and reduces the probability that water stains will have an adverse effect on the scroll compressor. At the same time, multiple auxiliary holes are designed to fix pipes, wiring harnesses, baffles or decorative panels, thereby reducing the probability of messy pipe and wiring harness layout, thus improving the convenience of outdoor unit assembly installation and maintenance.

[0024] Optionally, a gas-liquid separator is provided on the low-pressure pipeline between the scroll compressor and the indoor unit assembly.

[0025] By adopting the above technical solution, the gas-liquid separator efficiently separates gaseous and liquid refrigerants, thereby better protecting the scroll compressor and improving the stability of refrigeration.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] The outdoor unit assembly is divided into two parts: a refrigeration component integration assembly and a condenser. These are installed on the side and rear of the power battery under the vehicle chassis, respectively. This does not increase the overall height of the vehicle, facilitates heat dissipation, and is also convenient for installation and maintenance. The vehicle's motor controller controls the operation of the air conditioning compressor and scroll compressor through a high-voltage junction box located under the chassis, thereby controlling the working status of the indoor and outdoor unit assemblies. Compared to dispersing the refrigeration components throughout the vehicle body, this simplifies the wiring layout and improves the convenience of installing and maintaining the refrigeration unit in new energy commercial refrigerated trucks. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the installation location of the refrigeration unit in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the chassis of the refrigerated truck in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the overall structure of the integrated refrigeration component assembly in this application;

[0031] Figure 4 This is a structural schematic diagram of the base in this application;

[0032] Figure 5 This is a schematic diagram of the mounting bracket in this application;

[0033] Figure 6 This is a schematic diagram showing the installation positions of the oil-gas separator and the drying bottle in this application;

[0034] Figure 7 This is a schematic diagram of the piping assembly in this application;

[0035] Figure 8 This is a structural schematic diagram of the high-voltage junction box in this application.

[0036] Reference numerals: 1. Vehicle body; 11. Cab; 12. Insulated compartment; 13. Power battery; 14. Front wheel; 15. Rear wheel; 2. Indoor unit assembly; 3. Outdoor unit assembly; 31. Refrigeration component integrated assembly; 311. Base; 312. Scroll compressor; 32. Condenser; 33. Connecting bracket; 331. Clearance opening; 34. Folded edge; 341. U-shaped hole; 342. Mounting hole; 35. Drain hole; 36. Auxiliary hole; 37. Installation 371. Bracket; 372. Arc-shaped positioning groove; 38. Strip hole; 4. Pipe joint; 4. Pipe assembly; 41. Low-pressure pipe; 411. Metal pipe; 412. Rubber hose; 42. High-pressure pipe; 43. Solenoid valve; 44. Pressure sensor; 45. Injection pipe joint; 46. Oil return joint; 47. Filling valve joint; 5. High-pressure junction box; 51. Input end; 52. Output end; 6. Oil-gas separator; 7. Drying bottle; 8. Gas-liquid separator. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0038] This application discloses a refrigeration unit for a new energy commercial vehicle retrofit refrigeration truck.

[0039] Reference Figure 1 and Figure 2 In this application embodiment, the new energy commercial modified refrigerated truck is described using Chery Karry Jiangtun E7, Foton EV and other series of modified refrigerated trucks as examples. The refrigerated truck includes a vehicle body 1, on which a cab 11 and an insulated compartment 12 are provided. A power battery 13 is provided under the chassis of the vehicle body 1. A front wheel 14 and a rear wheel 15 are also rotatably provided under the chassis of the vehicle body 1. The power battery 13 is located between the front wheel 14 and the rear wheel 15.

[0040] Reference Figure 1 and Figure 2 A new energy commercial modified refrigerated truck refrigeration unit includes an inner unit assembly 2, an outer unit assembly 3, a pipeline assembly 4, and a high-voltage junction box 5. The inner unit assembly 2 is the evaporator assembly, which is located in the insulated compartment 12.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The outdoor unit assembly 3 includes a refrigeration component integration assembly 31 and a condenser 32. The refrigeration component integration assembly 31 includes a base 311 and a scroll compressor 312. The base 311 is located below the chassis of the vehicle body 1 and on the side of the power battery 13. The scroll compressor 312 is fixed on the base 311.

[0042] Reference Figure 2 , Figure 3 and Figure 4The base 311 is detachably connected to the chassis of the vehicle body 1 via a connecting bracket 33. Multiple connecting brackets 33 are provided, and multiple connecting brackets 33 are sequentially fixed on the base 311 along the extension direction of the base 311 and extend upward. The top of the connecting bracket 33 is detachably connected to the chassis of the vehicle body 1 by bolts, and the bottom of the connecting bracket 33 has a clearance opening 331 for pipes to pass through. The base 311 has folded inward around its perimeter to form a folded edge 34. Multiple drainage holes 35 are provided on the bottom surface of the base 311, and multiple auxiliary holes 36 for fixing pipes or wire harnesses are provided on the side of the base 311.

[0043] Reference Figure 2 , Figure 3 and Figure 5 The refrigeration unit for the new energy commercial modified refrigerated truck also includes an oil-gas separator 6 and a dryer bottle 7. A vertically extending mounting bracket 37 is provided on the base 311. The vertical projection of the mounting bracket 37 is C-shaped. The oil-gas separator 6 and the dryer bottle 7 are vertically spaced on the mounting bracket 37. The upper end of the mounting bracket 37 is used to install the oil-gas separator 6, and the lower end of the mounting bracket 37 is used to install the dryer bottle 7. The lower end of the mounting bracket 37 has an arc-shaped positioning groove 371 that fits the outer surface of the dryer bottle 7. The mounting bracket 37 also has multiple strip holes 372 for easy connection of other fasteners. Other fasteners are accessories for fixing the dryer bottle 7 and the oil-gas separator 6, such as steel rings and clamps.

[0044] Reference Figure 2 , Figure 3 and Figure 6 The oil-gas separator 6 is connected to the scroll compressor 312 via the pipeline assembly 4, and the dryer bottle 7 is connected to the condenser 32 and the indoor unit assembly 2 via the pipeline assembly 4.

[0045] Reference Figure 3 , Figure 6 and Figure 7 The piping assembly 4 includes a low-pressure pipe 41 and a high-pressure pipe 42. The high-pressure pipe 42 connects to the output end of the scroll compressor 312, the oil-gas separator 6, the input side of the condenser 32, the output side of the condenser 32, the dryer bottle 7, and the indoor unit assembly 2. The low-pressure pipe 41 connects to the indoor unit assembly 2 and the input end of the scroll compressor 312. The low-pressure pipe 41 includes a metal pipe 411 and a rubber hose 412. The rubber hose 412 is coaxially sleeved on the metal pipe 411. The high-pressure pipe 42 is similarly provided. The high-pressure pipe 42 is also equipped with a solenoid valve 43 and a pressure sensor 44. The diameter of the low-pressure pipe 41 is larger than that of the high-pressure pipe 42. The low-pressure pipe 41 is integrated with a liquid injection pipe connector 45, an oil return connector 46, and a filling valve connector 47. A gas-liquid separator 8 is also provided on the low-pressure pipe 41 between the scroll compressor 312 and the indoor unit assembly 2.

[0046] Reference Figure 3 , Figure 4 and Figure 6 The base 311 has pipe joints 38 at both ends for installing low-pressure pipe 41 and high-pressure pipe 42. The folded edge 34 of the base 311 has a U-shaped hole 341 for installing the pipe joint 38 and a U-shaped mounting hole 342 for installing the defrost pipe joint.

[0047] Reference Figure 1 , Figure 2 and Figure 8 The high-voltage junction box 5 is located on the beam below the chassis of the vehicle body 1. The high-voltage junction box 5 has one input terminal 51 and two output terminals 52. The input terminal 51 is connected to the high-voltage terminal of the motor controller (not shown in the figure) of the vehicle body 1. The two output terminals 52 are respectively connected to the scroll compressor 312 and the air conditioning compressor (not shown in the figure) of the cab 11 of the vehicle body 1.

[0048] The working principle of this application embodiment is as follows:

[0049] The outdoor unit assembly 3 is divided into two parts: a refrigeration component integrated assembly 31 and a condenser 32. These parts are installed on the side and rear of the power battery 13 under the chassis of the vehicle body 1, respectively. This does not increase the overall height of the vehicle, facilitates heat dissipation, and is convenient for installation and maintenance. The motor controller of the vehicle body 1 controls the operation of the air conditioning compressor and the scroll compressor 312 through the high-voltage junction box 5 located under the chassis of the vehicle body 1, thereby controlling the working status of the indoor unit assembly 2 and the outdoor unit assembly 3. With the auxiliary hole 36 on the base 311 and the clearance port 331 on the connecting bracket 33, compared to dispersing the refrigeration components in various places on the vehicle body 1, the wiring layout is simplified, thereby improving the convenience of installation and maintenance of the refrigeration unit of the new energy commercial refrigerated truck.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A refrigeration unit for a new energy commercial vehicle conversion refrigeration truck, characterized in that: The application relates to a refrigeration system for a vehicle, which comprises an inner machine assembly (2), an outer machine assembly (3), a pipeline assembly (4) and a high-pressure distribution box (5), wherein the inner machine assembly (2) is arranged in a heat preservation compartment (12) of a vehicle body (1), the outer machine assembly (3) comprises a refrigeration component integrated assembly (31) and a condenser (32), the refrigeration component integrated assembly (31) comprises a base (311) and a scroll compressor (312), the base (311) is arranged below a chassis of the vehicle body (1) and at the side of a power battery (13), the scroll compressor (312) is arranged on the base (311), the condenser (32) is arranged below the chassis of the vehicle body (1) and at the rear of the power battery (13), the inner machine assembly (2), the scroll compressor (312) and the condenser (32) are connected through the pipeline assembly (4), the high-pressure distribution box (5) is arranged on a beam below the chassis of the vehicle body (1), the high-pressure distribution box (5) has one input end (51) and two output ends (52), the input end (51) is connected with a high-voltage end of a motor controller of the vehicle body (1), and the two output ends (52) are respectively connected with the scroll compressor (312) and an air conditioner compressor of a cab (11) of the vehicle body (1).

2. The new energy commercial modified refrigerated truck refrigerating unit according to claim 1, characterized in that: The base (311) is detachably connected with the chassis of the vehicle body (1) through a connecting support (33), the connecting support (33) is fixedly arranged on the base (311) and extends upwards, the top end of the connecting support (33) is detachably connected with the chassis of the vehicle body (1), and the connecting support (33) is provided with a position avoiding opening (331) for pipeline penetration.

3. The new energy commercial modified refrigerated truck refrigerating unit according to claim 1, characterized in that: The application further comprises an oil-gas separator (6) and a drying bottle (7), the base (311) is provided with a vertically extending mounting support (37), the oil-gas separator (6) and the drying bottle (7) are vertically and spacedly arranged on the mounting support (37), the oil-gas separator (6) is connected with the scroll compressor (312) through the pipeline assembly (4), and the drying bottle (7) is connected with the condenser (32) and the inner machine assembly (2) through the pipeline assembly (4).

4. The new energy commercial modified refrigerated truck refrigerating unit according to claim 3, characterized in that: The mounting support (37) is provided with an arc-shaped positioning groove (371) matched with the outer surface of the drying bottle (7), and the mounting support (37) is further provided with a plurality of strip-shaped holes (372) for facilitating the fixation of other fixing members.

5. The new energy commercial modified refrigerated truck refrigerating unit according to claim 3, characterized in that: The pipeline assembly (4) comprises a low-pressure pipeline (41) and a high-pressure pipeline (42), the high-pressure pipeline (42) is connected with the output end of the scroll compressor (312), the oil-gas separator (6), the input side of the condenser (32), the output side of the condenser (32), the drying bottle (7) and the inner machine assembly (2), and the low-pressure pipeline (41) is connected with the inner machine assembly (2) and the input end of the scroll compressor (312).

6. The new energy commercial modified refrigerated truck refrigerating unit according to claim 5, characterized in that: The base (311) is provided with pipeline connectors (38) for mounting the low-pressure pipeline (41) and the high-pressure pipeline (42) at both ends, and the base (311) is provided with U-shaped holes (341) for mounting the pipeline connectors (38).

7. The new energy commercial modified refrigerated truck refrigerating unit according to claim 5, characterized in that: The low-pressure pipeline (41) comprises a metal pipeline (411) and a rubber pipeline (412), and the rubber pipeline (412) is coaxially sleeved on the metal pipeline (411).

8. The new energy commercial modified refrigerated truck refrigerating unit according to claim 5, characterized in that: The low-pressure pipe (41) is integrally provided with a liquid injection pipe joint (45), an oil return joint (46) and a filling valve joint (47).

9. The new energy commercial modified refrigerated truck refrigerating unit according to claim 1, characterized in that: The bottom (311) is inwardly folded to form a folded edge (34), a bottom surface of the bottom (311) is provided with a plurality of drainage holes (35), and side edges of the bottom (311) are provided with a plurality of auxiliary holes (36) for fixing pipelines or wire harnesses.

10. The new energy commercial modified refrigerated truck refrigerating unit according to claim 5, characterized in that: A gas-liquid separator (8) is arranged on a low-pressure pipe (41) between the scroll compressor (312) and the indoor unit assembly (2).

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