Flat plate cold chain unit

Abstract

The utility model provides a flat plate cold chain unit, which relates to the technical field of cold chain transportation air conditioners, and comprises a shell, a heat exchanger, a first heat exchanger, a second heat exchanger and a third heat exchanger, the shell is internally provided with a cavity, and the cavity is divided into a first accommodating cavity, a second accommodating cavity and a third accommodating cavity by partition plates; the condensation assembly, the evaporation assembly and the electric control assembly are located in the shell. The condensation assembly is located in the first containing cavity and comprises a compressor, an oil separator, a first draught fan, a condenser and a drying liquid storage device, one end of the compressor communicates with one end of the oil separator, the other end of the oil separator communicates with one end of the condenser, and the other end of the condenser communicates with the drying liquid storage device; and the other end of the condenser is communicated with one end of the dry liquid storage device. The flat plate cold chain unit has the advantages of energy conservation, consumption reduction, effective utilization of the compartment space and accurate temperature control.

Description

Technical Field

[0001] This utility model relates to the field of cold chain transportation air conditioner technology, specifically to a flat-plate cold chain unit. Background Technology

[0002] New energy cold chain electric vehicles refer to refrigerated transport vehicles powered by new energy technologies, primarily used for transporting food, pharmaceuticals, and fresh produce—goods with strict temperature requirements. These vehicles generally use electricity, hydrogen, or other clean energy sources as their power source. Compared to traditional diesel or gasoline refrigerated trucks, new energy cold chain electric vehicles have significant advantages in reducing environmental pollution and carbon emissions. The cold chain unit in these new energy electric vehicles is a key piece of equipment, used to provide and maintain the low-temperature environment inside the refrigerated compartment.

[0003] The limited range of new energy refrigerated electric vehicles has always been a major pain point in long-distance transportation. The limited battery capacity and driving range of new energy refrigerated trucks restrict their ability to transport goods over long distances. The continuous refrigeration required during operation consumes a significant amount of electricity, further shortening the vehicle's range. Currently, there is a lack of new energy electric vehicle refrigeration units on the market that offer high space utilization and low energy consumption. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a flat-plate cold chain unit to improve the utilization rate of the carriage and reduce energy consumption.

[0005] To achieve the above and other objectives, this utility model is implemented by including the following technical solution: This utility model provides a flat plate cold chain unit, the flat plate cold chain unit includes: a shell, the shell having a cavity, the cavity being divided into a first receiving cavity, a second receiving cavity and a third receiving cavity by a partition;

[0006] And the condensation assembly, evaporation assembly, and electronic control assembly located within the housing;

[0007] The condensing assembly is located in the first accommodating cavity. The condensing assembly includes a compressor and an oil separator, a first fan, a condenser, and a drying receiver. One end of the compressor is connected to one end of the oil separator, the other end of the oil separator is connected to one end of the condenser, and the other end of the condenser is connected to one end of the drying receiver.

[0008] The evaporation assembly is located in the first accommodating cavity and the second accommodating cavity, and comprises an expansion valve, an evaporator and a second fan, one end of the expansion valve is communicated with the other end of the dry liquid accumulator, the other end of the expansion valve is communicated with one end of the evaporator, and the other end of the evaporator is communicated with the other end of the compressor.

[0009] The electric control assembly is located in the first accommodating cavity and the third accommodating cavity, and comprises a high-pressure sensor, a low-pressure sensor, a high-pressure switch, a low-pressure switch and an electric control box, and the electric control box is arranged in the third accommodating cavity.

[0010] In an embodiment, the evaporation assembly comprises a heat exchanger, two inlet ends of the heat exchanger are connected with the dry liquid accumulator and the evaporator respectively, and two outlet ends of the heat exchanger are connected with the expansion valve and the compressor respectively.

[0011] In an embodiment, a plurality of through holes are formed in the upper portion of the shell.

[0012] In an embodiment, the compressor is a variable frequency compressor, and the first fan and the second fan are brushless DC fans.

[0013] In an embodiment, the compressor is located at one side of the first accommodating cavity, and the dry liquid accumulator is located at the other side of the first accommodating cavity.

[0014] In an embodiment, the first fan is located outside the dry liquid accumulator, and the condenser is located outside the first fan.

[0015] In an embodiment, the shell is provided with a heat preservation plate at the second accommodating cavity.

[0016] In an embodiment, the evaporator is a serpentine coil pipe.

[0017] In an embodiment, the low-pressure sensor is arranged on a pipeline between the compressor and the evaporator and close to the evaporator, and the high-pressure sensor is arranged on a pipeline between the dry liquid accumulator and the condenser.

[0018] In an embodiment, the low-pressure switch is arranged on a pipeline between the compressor and the evaporator and close to one end of the compressor, and the high-pressure switch is arranged on a pipeline between the compressor and the condenser.

[0019] The flat plate cold chain unit has the advantages that:

[0020] 1. The flat plate cold chain unit uses brushless fans and variable frequency compressors to save energy and reduce consumption.

[0021] 2. The flat plate cold chain unit is designed as a flat plate unit, coincides with the inner wall of the carriage, and utilizes 100% of the carriage space.

[0022] 3. The flat plate cold chain unit is designed as a flat plate unit, uses an electronic expansion valve to control the operation of the cold machine, and can accurately control the temperature at 0℃ and-20℃ in the room. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A flat plate cold chain unit connection relationship structure schematic diagram of the utility model is shown.

[0024] Figure 2 A flat plate cold chain unit perspective view of the utility model is shown.

[0025] Figure 3 A first containing cavity internal structure schematic diagram of the flat plate cold chain unit of the utility model is shown.

[0026] Figure 4 A first containing cavity internal structure schematic diagram of the flat plate cold chain unit of the utility model is shown.

[0027] Figure 5 An evaporating assembly structure schematic diagram of the flat plate cold chain unit of the utility model is shown.

[0028] Figure 6 An evaporating assembly second containing cavity internal structure schematic diagram of the flat plate cold chain unit of the utility model is shown.

[0029] In the drawings, the component list represented by each reference number is as follows

[0030] 100, shell; 101, first containing cavity; 102, second containing cavity; 103, third containing cavity; 104, through hole; 105, front cover plate; 106, heat preservation plate; 200, condensing assembly; 201, compressor; 202, oil separator; 203, dry liquid storage device; 204, first fan; 205, condenser; 300, evaporating assembly; 301, expansion valve; 302, evaporator; 303, second fan; 304, heat exchanger; 400, electric control assembly; 401, high pressure sensor; 402, low pressure sensor; 403, high pressure switch; 404, low pressure switch; 405, electric control box; 500, electromagnetic valve. DETAILED DESCRIPTION

[0031] Please refer to Figures 1 to 6The embodiments of the present application will be described in detail with specific examples. The skilled in the art can easily understand other advantages and functions of the present application from the content disclosed in the specification. The present application can also be implemented or applied through other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0032] As shown in Figure 2 , Figure 3 and Figure 4 , the present application provides a flat plate cold chain unit, which comprises a shell 100, a condensing assembly 200, an evaporating assembly 300 and an electric control assembly 400 located in the shell 100.

[0033] The shell 100 has a cavity, which is divided into a first accommodating cavity 101, a second accommodating cavity 102 and a third accommodating cavity 103 by a partition plate. The condensing assembly 200, the evaporating assembly 300 and the electric control assembly 400 can be arranged in the first accommodating cavity 101. The evaporating assembly 300 can be arranged in the second accommodating cavity 102. The electric control assembly 400 can be arranged in the first accommodating cavity 101 and the third accommodating cavity 103. The third accommodating cavity 103 is located on one side of the first accommodating cavity 101 and the second accommodating cavity 102.

[0034] The top wall, the bottom wall and the side wall of the shell 100 are provided with through holes 104.

[0035] As shown in Figure 3 and Figure 4As shown, the condensing assembly 200 includes a compressor 201, an oil separator 202, a dry accumulator 203, and a first fan 204 and a condenser 205. The compressor 201 is located on one side of the first containing cavity 101, and the dry accumulator 203 is located on the other side of the first containing cavity 101. The compressor 201 is a variable frequency compressor 201. In a high temperature environment, the compressor 201 is used at a reduced frequency, which protects the compressor 201 and reduces energy consumption in a high temperature environment. One end of the compressor 201 is in communication with one end of the oil separator 202. The oil separator 202 is usually installed on the exhaust pipe of the compressor 201 and is used to separate the lubricating oil entrained in the exhaust gas of the compressor 201. The first fan 204 is located outside the dry accumulator 203, and the condenser 205 is located outside the first fan 204. The other end of the oil separator 202 is in communication with one end of the condenser 205, and the other end of the condenser 205 is in communication with one end of the dry accumulator 203. The condenser 205 is a louvered structure. The first shell 100 where the condenser 205 is located is provided with a plurality of through holes 104 on the side walls. The dry accumulator 203 is used to store and supply liquid refrigerant in the system to meet the needs of changes in working conditions. It compensates for the small amount of leaked refrigerant, filters various impurities that may exist in the system, and ensures smooth flow of the refrigerant. It can also absorb moisture in the refrigerant to prevent the "ice block" phenomenon caused by the presence of moisture.

[0036] As Figure 4 Figure 5 and Figure 6As shown, the evaporation assembly 300 includes an expansion valve 301, an evaporator 302, a second fan 303, and a heat exchanger 304. The housing 1 has a thermal insulation plate 106, which can be an epp thermal insulation plate 106, and a front cover plate 105 with a through hole 104 at the second accommodating cavity 102. The evaporator 302 and the second fan 303 are located in the second accommodating cavity 102. The evaporator 302 is a serpentine coil, and the second fan 303 is located above the evaporator 302. The second fan 303 can be two second fans 303. The heat exchanger 304 is located in the first accommodating cavity 101. The heat exchanger 304 can be a heat exchange pipe. Two inlet ends of the heat exchanger 304 are connected to the dry liquid reservoir 203 and the evaporator 302, respectively. Two outlet ends of the heat exchanger 304 are connected to the expansion valve 301 and the compressor 201, respectively. One end of the expansion valve 301 is in communication with the other end of the dry liquid reservoir 203. The other end of the expansion valve 301 is in communication with one end of the evaporator 302. The other end of the evaporator 302 is in communication with the other end of the compressor 201. The heat exchanger 304 can exchange heat. Its main function is to use the heat of the high-temperature and high-pressure refrigerant gas discharged by the compressor 201 to preheat the low-temperature and low-pressure refrigerant gas sucked by the compressor 201, thereby reducing the power consumption of the compressor 201 and improving the refrigeration efficiency. The expansion valve 301 can be an electronic expansion valve 301, which can control the operation of the refrigerator and accurately control the temperature at 0°C and -20°C in the room.

[0037] The first fan 204 and the second fan 303 are brushless DC fans.

[0038] As Figure 3 , Figure 4 and Figure 5As shown, the flat plate cold chain unit further comprises an electric control assembly 400, which comprises a high pressure sensor 401, a low pressure sensor 402, a high pressure switch 403, a low pressure switch 404 and an electric control box 405. The high pressure switch 403, the low pressure switch 404, the high pressure sensor 401 and the low pressure sensor 402 are arranged in the first accommodating cavity 101, and the electric control box 405 is arranged in the third accommodating cavity 103. The low pressure sensor 402 is arranged on the pipeline between the compressor 201 and the evaporator 302 and close to the evaporator 302, and the high pressure sensor 401 is arranged on the pipeline between the dry liquid accumulator 203 and the condenser 205. The low pressure switch 404 is arranged on the pipeline between the compressor 201 and the evaporator 302 and close to one end of the compressor 201, and the high pressure switch 403 is arranged on the pipeline between the compressor 201 and the condenser 205. The low pressure switch 404 and the high pressure switch 403 can control the start and stop of the compressor 201 according to the pressure. The high pressure switch 403 and the low pressure switch 404 can be connected with the electric control box 405, and the high pressure sensor 401 and the low pressure sensor 402 can detect the inlet and outlet pressures of the evaporator to ensure accurate temperature control at 0℃ and -20℃ in the room. The electric control box 405 can be provided with a controller, and the model of the controller is AI-12. The controller is electrically connected with the high pressure sensor 401, the low pressure sensor 402, the high pressure switch 403 and the low pressure switch 404.

[0039] The flat plate cold chain unit comprises a solenoid valve 500, which can be a defrosting solenoid valve 500. The solenoid valve 500 is arranged in the first accommodating cavity 101. One end of the solenoid valve 500 is connected to the pipeline between the evaporator 302 and the expansion valve 301, and the other end of the solenoid valve 500 is connected to the pipeline between the oil separator 202 and the condenser 205.

[0040] The flat plate cold chain unit is designed as a flat plate unit, which coincides with the inner wall of the vehicle compartment and utilizes 100% of the space of the vehicle compartment. In addition, the vehicle type also supports standby power use, that is, even if the unit cannot be powered by the vehicle battery, the unit can be powered by 220V / 380V voltage, which completely guarantees that the cold storage goods carried will not be damaged due to temperature difference.

[0041] The utility model discloses a refrigeration system, including compressor 201, condenser 205, evaporator 302, throttling device, indoor unit and outdoor unit, the compressor 201 is connected with condenser 205, and the condenser 205 is connected with evaporator 302, and the evaporator 302 is connected with throttling device, and the indoor unit is connected with evaporator 302, and the outdoor unit is connected with compressor 201.

[0042] Therefore, the utility model effectively overcomes various shortcomings in prior art and has high industrial utilization value. The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A flat plate cold chain unit, characterized by: The flat plate cold chain unit comprises: a shell having a cavity inside, the cavity being divided into a first accommodating cavity, a second accommodating cavity and a third accommodating cavity by a partition plate; a condensing assembly, an evaporating assembly and an electric control assembly located in the shell; the condensing assembly is located in the first accommodating cavity, and comprises a compressor and an oil separator, a first fan, a condenser and a dry liquid storage tank, one end of the compressor being communicated with one end of the oil separator, the other end of the oil separator being communicated with one end of the condenser, and the other end of the condenser being communicated with one end of the dry liquid storage tank; the evaporating assembly is located in the first accommodating cavity and the second accommodating cavity, and comprises an expansion valve, an evaporator and a second fan, the expansion valve being located in the first accommodating cavity, one end of the expansion valve being communicated with the other end of the dry liquid storage tank, the other end of the expansion valve being communicated with one end of the evaporator, and the other end of the evaporator being communicated with the other end of the compressor; and the electric control assembly is located in the first accommodating cavity and the third accommodating cavity, and comprises a high-pressure sensor, a low-pressure sensor, a high-pressure switch, a low-pressure switch and an electric control box, the electric control box being arranged in the third accommodating cavity.

2. The flat plate cold chain unit of claim 1, wherein: The evaporating assembly comprises a heat exchanger, two inlet ends of the heat exchanger being connected with the dry liquid storage tank and the evaporator respectively, and two outlet ends of the heat exchanger being connected with the expansion valve and the compressor respectively.

3. The flat plate cold chain unit of claim 1, wherein: A plurality of through holes are formed in the upper part of the shell.

4. The flat plate cold chain unit of claim 1, wherein: The compressor is a variable frequency compressor, and the first fan and the second fan are brushless DC fans.

5. The flat plate cold chain unit of claim 1, wherein: The compressor is located at one side of the first accommodating cavity, and the dry liquid storage tank is located at the other side of the first accommodating cavity.

6. The flat plate cold chain unit of claim 1, wherein: The first fan is located outside the dry liquid storage tank, and the condenser is located outside the first fan.

7. The flat plate cold chain unit of claim 1, wherein: The shell has a heat preservation plate at the second accommodating cavity.

8. The flat plate cold chain unit of claim 1, wherein: The evaporator is a serpentine coil.

9. The flat plate cold chain unit of claim 1, wherein: The low-pressure sensor is arranged on a pipeline between the compressor and the evaporator and close to the evaporator, and the high-pressure sensor is arranged on a pipeline between the dry liquid storage tank and the condenser.

10. The flat plate cold chain unit of claim 1, wherein: The low-pressure switch is arranged on a pipeline between the compressor and the evaporator and close to one end of the compressor, and the high-pressure switch is arranged on a pipeline between the compressor and the condenser.

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