Compression condensing unit and new energy electric cold chain transport truck

By adopting DC scroll compressors and power management systems in cold chain transport vehicles, the leakage problem of traditional refrigeration systems is solved, and the stable operation and multi-purpose insulation functions of new energy cold chain transport vehicles are achieved.

CN223345684UActive Publication Date: 2025-09-16SHANGHAI GUOYAN REFRIGERATION EQUIPMENT CO LTD
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Patent Information

Application Number
CN202422724554.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-08
Publication Date
2025-09-16
Estimated Expiration
2034-11-08

AI Technical Summary

Technical Problem

The refrigeration system of traditional cold chain transport vehicles has the risk of refrigerant leakage, and the traditional inclined plate refrigeration compressor is sensitive to the refrigerant return air side, resulting in system instability.

Method used

A DC scroll compressor is used to replace the open swash plate refrigeration compressor, and the oil separator and air-cooled condenser are connected through exhaust hoses, suction hoses and oil return hoses. The back pressure valve is eliminated, and power management is carried out by combining high-voltage DC/low-voltage DC modules and signal sources to achieve stable operation of the refrigeration system.

Benefits of technology

It effectively reduces the potential leakage risks of the refrigeration system, has a simple structure and is easy to install, meeting the insulation and freshness requirements of a variety of transported goods, and supports the rapid assembly of new energy vehicles and the upgrade of existing vehicles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of new energy pure electric cold chain transport trucks, in particular to a compression condensing unit and a new energy electric cold chain transport truck, which comprise a frame, a compression condensing module, a power distribution control box and an air-cooled condenser, and the compression condensing module, the power distribution control box and the air-cooled condenser are mounted on the frame; the compression and condensation module comprises a direct-current scroll compressor, an oil separator and other original components which are mounted on the rack; a compressor exhaust port in the direct-current scroll compressor is communicated with an oil separator inlet in the oil separator through an exhaust hose; an oil separator outlet in the oil separator is communicated with the air-cooled condenser; and an oil separator oil discharge port on the oil separator is communicated with an oil return interface formed on the air suction hose through an oil return hose. The direct-current scroll compressor is adopted to replace an original open type swash plate refrigeration compressor, and the exhaust hose, the suction hose and the oil return hose which are arranged in a matched mode are connected with the oil separator and the air-cooled condenser, so that the leakage hidden danger of the refrigeration system is effectively reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of new energy pure electric cold chain transport vehicles, specifically a compression condensing unit and a new energy electric cold chain transport truck. Background Art

[0002] In the traditional cold chain transportation field, most small and medium-sized cold chain transportation vehicles use economical non-independent refrigeration units. The refrigeration compressors they are equipped with are generally open-type compressors. When working, the power source is the vehicle chassis engine through the pulley and the electromagnetic clutch equipped with the compressor, which drives the refrigeration compressor through the transmission belt, thereby providing a constant temperature cold (heat) source for the goods in the car compartment to meet the freshness requirements of the goods. Manufacturers of this type of refrigeration units provide tens of thousands of sets of refrigeration equipment to the cold chain transportation market every year, so each manufacturer has a large number of mature products to meet market demand. However, with my country vigorously promoting new policies for energy conservation and emission reduction, all-electric new energy cold chain transportation vehicles have replaced traditional fuel-type cold chain transportation vehicles, which has become a general trend in the cold chain transportation field.

[0003] Since the original traditional unit uses a swash plate refrigeration compressor, this type of compressor is very sensitive to liquid hammer on the refrigerant return air side and there is a risk of leakage in the refrigeration system. Utility Model Content

[0004] The purpose of the present invention is to transform the existing traditional non-independent cold chain transport truck refrigeration unit into a new energy electric cold chain transport truck refrigeration unit to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A compression condensing unit comprises a frame, a compression condensing module, a power distribution control box and an air-cooled condenser, wherein the compression condensing module, the power distribution control box and the air-cooled condenser are mounted on the frame;

[0007] The compression and condensation module includes a DC scroll compressor and an oil separator mounted on a frame;

[0008] The compressor exhaust port formed on the DC scroll compressor is connected to the oil separator inlet on the oil separator through an exhaust hose, and the compressor intake port on the DC scroll compressor is connected to the intake hose;

[0009] The oil separator outlet on the oil separator is connected to the air-cooled condenser;

[0010] The oil separator oil discharge port on the oil separator is communicated with the oil return interface formed on the air suction hose through the oil return hose.

[0011] As described above, the compression condensing unit: the air intake hose is further provided with a low-pressure switch and a sampling needle valve, and the end of the air intake hose away from the DC scroll compressor is connected to the evaporator via a transition joint.

[0012] The compression condensing unit as described above: the DC scroll compressor is rigidly fixed to the frame via a mounting frame, wherein the mounting frame includes:

[0013] A bracket connected to the frame and a support frame installed on the bracket, wherein the support frame is rigidly fixed to the DC scroll compressor and is detachably connected.

[0014] As for the compression condensing unit as described above: four waist holes are formed on the mounting surface of the bracket facing the frame, and bolts passing through the waist holes fix the bracket to the frame.

[0015] As described above, the compression condensing unit: the power distribution control box is equipped with a high-voltage DC / low-voltage DC module 301, the input power of the high-voltage DC / low-voltage DC module 301 is DC230V~DC750V, and the output power is low-voltage DC12V or DC24V.

[0016] As described above, the compression condensing unit: the power distribution control box is provided with a signal source, and the signal source is connected to the original monitoring circuit.

[0017] For the compression condensing unit as described above: the signal source is a coil with a power consumption of 1A.

[0018] The new energy electric cold chain transport truck includes the compression condensing unit described above. The compression condensing unit is fixedly installed at the front of the truck compartment. The evaporator is installed in the truck compartment. The compressor intake port formed on the DC scroll compressor is connected to the evaporator through an intake hose. The evaporator is also connected to the air-cooled condenser through a connecting pipe.

[0019] The compression condensing unit as described above: the evaporator is an air cooler, a water tank evaporator or a cold storage evaporator.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] A DC scroll compressor is used to replace the original open swash plate refrigeration compressor. At the same time, exhaust hoses, suction hoses and oil return hoses are provided to connect the oil separator and air-cooled condenser, effectively reducing the leakage risks of the refrigeration system and eliminating the use of back pressure valves. The structure is simple and easy to install.

[0022] After the frame and compartment of the compression condensing unit are installed, they are connected to the vehicle power supply through cables. The utility model can meet the insulation and freshness requirements of a variety of different transported goods, meet the rapid assembly of new vehicles, and facilitate the upgrade of existing traditional vehicle-mounted non-independent refrigeration vehicle refrigeration units. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the compression condensing unit.

[0024] Figure 2 This is a structural diagram of the compression and condensing module in the compression and condensing unit.

[0025] Figure 3 This is the structural explosion diagram of the compression condensing module in the compression condensing unit.

[0026] Figure 4 Schematic diagram of the refrigerant circuit in a compression condensing unit.

[0027] Figure 5 This is a structural diagram of a compression condensing unit (with high-voltage DC overload protection).

[0028] Figure 6 This is an exploded view of the power distribution control box in a compression condensing unit (with high-voltage DC overload protection).

[0029] Figure 7 This is the control circuit diagram of the compression condensing unit (with high-voltage DC overload protection).

[0030] Figure 8 This is a structural diagram of a compression condensing unit (not equipped with high-voltage DC overload protection).

[0031] Figure 9 This is an exploded view of the power distribution control box in a compression condensing unit (not equipped with high-voltage DC overload protection).

[0032] Figure 10 This is the control circuit diagram of a compression condensing unit (not equipped with high-voltage DC overload protection).

[0033] In the picture:

[0034] 1- rack;

[0035] 2-Compression condensing module; 201-Bracket; 202-Support frame; 203-DC scroll compressor; 2031-Compressor exhaust port; 2032-Compressor intake port; 204-Oil separator; 2041-Oil separator outlet; 2042-Oil separator oil drain port; 2043-Oil separator inlet; 205-Exhaust hose; 206-Intake hose; 207-Oil return hose; 208-Low pressure switch; 209-Sampling needle valve; 210-Oil return interface; 211-Transition joint;

[0036] 3-power distribution control box; 301-high voltage DC / low voltage DC module; 302-signal source; 303-protective shell;

[0037] 4-Air-cooled condenser;

[0038] 5- outer shell;

[0039] 6- Evaporator. DETAILED DESCRIPTION

[0040] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0041] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0042] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0043] This utility model aims to propose a refrigeration unit for replacing the traditional non-independent refrigeration unit for refrigerated vehicles, and is used in new energy electric cold chain transport trucks. The specific implementation is as follows:

[0044] See also Figure 1-Figure 7In an embodiment of the present invention, a compression condensing unit comprises a frame 1, a compression condensing module 2, a power distribution control box 3 and an air-cooled condenser 4, wherein the compression condensing module 2, the power distribution control box 3 and the air-cooled condenser 4 are mounted on the frame 1; the compression condensing module 2 comprises a DC scroll compressor 203 and an oil separator 204 mounted on the frame 1, wherein the DC scroll compressor 203 is a semi-enclosed DC scroll compressor; the compressor exhaust port 2031 formed on the DC scroll compressor 203 is connected to the exhaust hose 2031 through the exhaust hose 2031. 5 is communicated with the oil separator inlet 2043 on the oil separator 204; the oil separator outlet 2041 on the oil separator 204 is communicated with the air-cooled condenser 4; the oil separator oil discharge port 2042 on the oil separator 204 is communicated with the oil return interface 210 formed on the suction hose 206 through the oil return hose 207, and the suction hose 206 is also provided with a low-pressure switch 208 and a sampling needle valve 209. The end of the suction hose 206 away from the DC scroll compressor 203 is connected to the evaporator 6 through a transition joint 211.

[0045] In this embodiment, a vortex compression frame 203 is used to replace the original open-type inclined plate refrigeration compressor, and an exhaust hose 205, an air intake hose 206 and an oil return hose 207 are provided to connect the oil separator 204 and the air-cooled condenser 4, which effectively reduces the leakage risk of the refrigeration system, eliminates the use of the back pressure valve, and has a simple structure and is easy to install.

[0046] Furthermore, the DC scroll compressor 203 is rigidly fixed to the frame 1 through a mounting frame, wherein the mounting frame includes a bracket 201 connected to the frame 1 and a support frame 202 installed on the bracket 201, and the support frame 202 is detachably connected to the DC scroll compressor 203, thereby realizing a rigid connection between the DC scroll compressor 203 and the bracket 201, effectively improving the strength and stability of the installation. At the same time, the DC scroll compressor 203 adopts an exhaust hose 205 and an intake hose 206 to connect to the oil separator 204 to realize a flexible connection to achieve a shock absorption effect and avoid leakage problems in the pipeline.

[0047] Preferably, four waist holes are formed on the mounting surface of the bracket 201 facing the frame 1, and the bolts passing through the waist holes fix the bracket 201 to the frame 1. It should be noted that waist holes are also provided at the position on the bracket 201 for connecting with the support frame 202. The setting of the waist holes allows sufficient movement and adjustment distance in the horizontal direction perpendicular to the axis of the DC scroll compressor 203, thereby solving the problem of difficulty in taking over the exhaust hose 205 and the intake hose 206 due to processing errors.

[0048] The power distribution control box 3 includes a protective shell 303, and a high-voltage DC / low-voltage DC module 301 is configured in the protective shell 303. The input power supply of the high-voltage DC / low-voltage DC module 301 is DC230V~DC750V, and the output power supply is low-voltage DC12V or DC24V. The configured high-voltage DC / low-voltage DC module 301 converts the high-voltage DC power of DC230V~DC750V into low-voltage DC power of DC12V or DC24V to meet the power supply requirements. Preferably, a cooling fan is provided inside the high-voltage DC / low-voltage DC module 301 to ensure the stable operation of the high-voltage DC / low-voltage DC module 301.

[0049] The control logic of the refrigeration system for traditional non-independent cold chain transport vehicles includes real-time monitoring of whether the electromagnetic clutch of the compressor is working. That is, during the operation of the refrigeration system, the circuit of the electromagnetic clutch is detected. When the current value is less than 1A, the operation display of the unit will alarm and shut down. The all-electric refrigeration unit uses a semi-enclosed compressor, which does not have this current signal. Therefore, a signal source 302 is configured in the power distribution control box 3. The signal source 302 is connected to the monitoring circuit, wherein the signal source 302 is a coil with a power consumption of 1A, which serves as a monitoring feedback signal.

[0050] For power supply configuration, see Figures 8-10 There are several ways to achieve this: the first way is to configure relevant safety protection components, such as high-voltage power supply overload fuse HMF and high-voltage power supply relay HDCR. These two components are optional; if the chassis power supply can provide high and low voltage power and be controlled, it can be simplified to achieve the purpose of reducing costs.

[0051] As another embodiment of the present invention, a new energy electric cold chain transport truck is also proposed, including the above-mentioned compression condensing unit, the compression condensing unit is fixedly installed on the front of the truck compartment, and an outer shell 5 is installed on the outside of the compression condensing unit to effectively protect the compression condensing unit to prevent damage due to collision. The evaporator 6 is installed in the truck compartment, and the compressor intake port 2032 formed on the DC scroll compressor 203 is connected to the evaporator 6 through the intake hose 206. The evaporator 6 is also connected to the air-cooled condenser 4 through a connecting pipe.

[0052] The evaporator 6 is an air cooler, a water tank evaporator or a cold storage evaporator. Of course, in practical applications, other types of evaporators can also be used as long as they provide a suitable fresh-keeping temperature for the goods.

[0053] After the frame 1 in the compression condensing unit is installed in the car, it is connected to the vehicle power supply through a cable. The utility model can meet the insulation and freshness requirements of a variety of different transported goods, meet the rapid assembly of new vehicles, and facilitate the upgrade of existing traditional vehicle-mounted non-independent refrigeration vehicle refrigeration units. The modified new energy vehicle refrigeration unit retains all the original unit's functions including cooling, defrosting, heating, etc.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0055] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A compression condensing unit, comprising a frame (1), a compression condensing module (2), a power distribution control box (3) and an air-cooled condenser (4), wherein the compression condensing module (2), the power distribution control box (3) and the air-cooled condenser (4) are mounted on the frame (1); It is characterized in that The compression and condensation module (2) comprises a DC scroll compressor (203) and an oil separator (204) mounted on a frame (1); The compressor exhaust port (2031) on the DC scroll compressor (203) is connected to the oil separator inlet (2043) on the oil separator (204) via an exhaust hose (205), and the compressor intake port (2032) on the DC scroll compressor (203) is connected to an intake hose (206); The oil separator outlet (2041) on the oil separator (204) is connected to the air-cooled condenser (4); The oil separator oil discharge port (2042) on the oil separator (204) is communicated with the oil return interface (210) formed on the air intake hose (206) via the oil return hose (207).

2. A compression condensing unit according to claim 1, characterized in that: The air intake hose (206) is also provided with a low-pressure switch (208) and a sampling needle valve (209). The end of the air intake hose (206) away from the DC scroll compressor (203) is connected to the evaporator (6) via a transition joint (211).

3. The compression condensing unit according to claim 1, characterized in that: The DC scroll compressor (203) is rigidly fixed to the frame (1) via a mounting frame, wherein the mounting frame comprises: A bracket (201) connected to the frame (1) and a support frame (202) mounted on the bracket (201), wherein the support frame (202) is rigidly fixed to the DC scroll compressor (203) and is detachably connected.

4. A compression condensing unit according to claim 3, characterized in that: Four waist holes are formed on the mounting surface of the bracket (201) facing the frame (1), and bolts passing through the waist holes fix the bracket (201) to the frame (1).

5. The compression condensing unit according to claim 1, characterized in that: The power distribution control box (3) is equipped with a high-voltage DC / low-voltage DC module (301). The input power of the high-voltage DC / low-voltage DC module (301) is DC230V-DC750V, and the output power is low-voltage DC12V or DC24V.

6. The compression condensing unit according to claim 5, characterized in that: A signal source (302) is arranged in the power distribution control box (3), and the signal source (302) is connected to a monitoring circuit.

7. The compression condensing unit according to claim 6, characterized in that: The signal source (302) is a coil consuming 1A of power.

8. New energy electric cold chain transport truck, characterized by: It comprises a compression condensing unit as described in any one of claims 1 to 7, wherein the compression condensing unit is fixedly installed at the front of a truck compartment, an evaporator (6) is installed in the truck compartment, the compressor intake port (2032) on the DC scroll compressor (203) is connected to the evaporator (6) through an intake hose (206), and the evaporator (6) is also connected to the air-cooled condenser (4) through a connecting pipe.

9. The new energy electric cold chain transport truck according to claim 8, characterized in that: The evaporator (6) is an air cooler, a water tank evaporator or a cold storage evaporator.