Overhead integrated unit for cold chain

Abstract

The utility model provides an overhead integrated unit for a cold chain, and relates to the technical field of cold chain transportation air conditioners, the overhead integrated unit for the cold chain comprises a shell, the shell comprises a first shell body and a second shell body, the first shell body is located above the second shell body, and the second shell body is located above the first shell body. A first containing cavity and a second containing cavity are formed in the first shell, and a plurality of ventilation holes are formed in the positions, on the top wall and the side wall of the second containing cavity, of the first shell; the insulation board is connected between the first shell and the second shell; a compressor, an oil separator, a liquid storage device and a drying filter are arranged in the first containing cavity, and a condensation fan and a condenser located at the bottom of the condensation fan are arranged in the second containing cavity; and the evaporation assembly is arranged in the second shell, and by means of the integrated unit, the endurance of new energy transportation is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold chain transportation air conditioner technical field, specifically relates to a cold chain is with top -mounted integrated unit. BACKGROUND

[0002] Cold chain transportation refers to the whole process of transportation, whether it is loading and unloading, changing the transportation mode, changing the packaging equipment and other links, so that the transported goods always maintain a certain temperature.

[0003] The existing new energy electric vehicle cold chain transportation often has the endurance problem, and the existing cold chain unit structure cannot adapt to the use demand of new energy. In addition, due to the influence of the front automobile flow guide cover, the front-mounted unit has the problem of poor air flow and heat dissipation. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of prior art, and provides a cold chain is with top -mounted integrated unit to meet the use demand of new energy.

[0005] In order to realize the above object and other objects, the utility model is realized through the following technical scheme: the utility model provides a cold chain is with top -mounted integrated unit, the integrated unit includes:

[0006] The shell includes a first shell and a second shell, the first shell is located above the second shell, the first shell has a first containing cavity and a second containing cavity, and a plurality of ventilation holes are arranged at the top wall and the side wall of the second containing cavity of the first shell.

[0007] The heat preservation plate is connected between the first shell and the second shell.

[0008] The condensing assembly includes a compressor, an oil separator, a liquid accumulator, a condenser, a drying filter and a condensing fan, the compressor, the oil separator, the liquid accumulator and the drying filter are arranged in the first containing cavity, and the condensing fan and the condenser located at the bottom of the condensing fan are arranged in the second containing cavity.

[0009] The evaporating assembly is arranged in the second shell, and the evaporating assembly includes an expansion valve, an evaporator and an evaporating fan.

[0010] One end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to one end of the liquid accumulator, the other end of the liquid accumulator is connected to one end of the drying filter, the other end of the drying filter is connected to one end of the expansion valve, the other end of the expansion valve is connected to one end of the evaporator, and the other end of the evaporator is connected to the other end of the compressor.

[0011] The utility model provides a kind of top-mounted integrated unit for cold chain, compared with prior art, the utility model has following beneficial effects: top-mounted integrated cold chain unit, compared with the front-mounted unit in prior art, can effectively reduce vehicle advancing air resistance and solve the problem of poor heat dissipation of front-mounted unit, and the height of outdoor unit is less than 300mm, effectively improve the endurance.Integrated pure electric unit structure is compact, reduces mechanical transmission component, reduces failure rate, improves operation reliability.Unit airflow organization simulation design, outlet air velocity reaches 2.5m / s or more, so that the temperature distribution in box is uniform. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It shows that the utility model integrated unit structure schematic diagram.

[0013] Figure 2 It shows that the utility model condensing assembly structure schematic diagram.

[0014] Figure 3 It shows that the utility model evaporating assembly structure schematic diagram.

[0015] Figure 4 It shows that the utility model integrated unit sectional view.

[0016] Figure 5 It shows that the utility model integrated unit internal schematic diagram.

[0017] Figure 6 It shows that the utility model integrated unit refrigerant flow chart. DETAILED DESCRIPTION

[0018] Please refer to Figures 1 to 6 The embodiments of the utility model will be described below through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.The utility model can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.

[0019] As Figure 1 And Figure 3The utility model provides a kind of top-mounted integrated unit for cold chain, the integrated unit includes first shell 11 and second shell 12, the first shell 11 is located the second shell 12 above, heat preservation plate 2 is connected between the first shell 11 and second shell 12, the first shell 11 has first containing cavity 112 and second containing cavity 113, the first containing cavity 112 and second containing cavity 113 are separated by baffle 114.The first shell 11 has front cover plate 115 and rear cover plate 116, the front cover plate 115 and rear cover plate 116 are arc structure, the front cover plate 115 is arranged at the second containing cavity 113, a plurality of ventilation holes 111 are provided on the front cover plate 115.

[0020] Specifically, the integrated unit includes condensing assembly 3 and evaporating assembly 4.The condensing assembly 3 includes compressor 31, oil separator 32, liquid accumulator 34, condenser 33, drying filter 35, condensing fan 36 and sight glass 37.

[0021] As Figure 4 The heat preservation plate 2 can be provided with connecting hole 21, which can be connected between condensing assembly 3 and evaporating assembly 4.

[0022] The first containing cavity 112 is provided with compressor 31, oil separator 32, liquid accumulator 34 and drying filter 35, and the second containing cavity 113 is provided with condenser 33, condensing fan 36 and sight glass 37, and the evaporating assembly 4 includes expansion valve 41, evaporator 42 and evaporating fan 43.

[0023] As Figure 5 The condensing fan 36 and the condenser 33 can be inclinedly arranged in the second containing cavity 113 through tripod 117, and specifically, the condensing fan 36 is arranged above the condenser 33, and the condenser 33 can be parallel flow condenser 33.

[0024] As Figure 2 And Figure 6 One end of the compressor 31 is connected to one end of the oil separator 32, the other end of the oil separator 32 is connected to one end of the condenser 33, the other end of the condenser 33 is connected to one end of the liquid accumulator 34, the other end of the liquid accumulator 34 is connected to one end of the drying filter 35, and the other end of the drying filter 35 is connected to one end of the sight glass 37, and the connection can be pipe connection.

[0025] As Figure 6As shown, the integrated unit comprises a low-pressure switch 8 and a high-pressure switch 9, the low-pressure switch 8 is located on the pipeline between the compressor 31 and the evaporator 42 and close to one end of the compressor 31, and the high-pressure switch 9 is located on the pipeline between the compressor 31 and the condenser 33. The low-pressure switch 8 and the high-pressure switch 9 can control the start and stop of the compressor 31 according to the pressure, so as to protect the compressor 31.

[0026] As shown in Figure 5 , the integrated unit comprises an electric control box 7, which can be arranged in the first accommodating cavity 112. A controller can be arranged in the electric control box 7. The model of the controller can be AI-12. The controller can be electrically connected with the compressor 31, the evaporative fan 43, the condensing fan 36, the low-pressure sensor 8, the high-pressure sensor 9 and other electrical components.

[0027] As shown in Figure 1 and Figure 3 , the second shell 12 is provided with a heat exchanger 6, an expansion valve 41, an evaporator 42 and an evaporative fan 43. The second shell 12 is provided with an air return port 121 at the bottom and close to one side of the heat exchanger 6. The second shell 12 has an air outlet 122 close to the evaporator 42. The heat exchanger 6 and the evaporator 42 can be arranged on both sides of the second shell 12. The evaporative fan 43 can be arranged between the heat exchanger 6 and the evaporator 42. The evaporator 42 can be arranged in the second shell 12 in an inclined manner. The evaporator 42 is a serpentine coil.

[0028] As shown in Figure 6 , the integrated unit comprises a heat exchanger 6, which can be a heat exchange pipe. The heat exchanger 6 can exchange heat. Its main function is to use the heat of the high-temperature and high-pressure refrigerant gas discharged by the compressor 31 to preheat the low-temperature and low-pressure refrigerant gas sucked by the compressor 31, so as to reduce the power consumption of the compressor 31 and improve the refrigeration efficiency. The pipeline connecting the expansion valve 41 and the dry filter 35 and the pipeline connecting the evaporator 42 and the compressor 31 exchange heat in the heat exchanger 6. Two inlet ends of the heat exchanger 6 are connected with the dry filter 35 and the evaporator 42 respectively. Two outlet ends of the heat exchanger 6 are connected with the expansion valve 41 and the compressor 31 respectively.

[0029] As shown in Figure 6As shown in some embodiments, the condensing assembly 3 includes a sight glass 37, one end of which is connected to an inlet end of the heat exchanger 6, an outlet end of the heat exchanger 6 is connected to one end of the expansion valve 41, the other end of the expansion valve 41 is connected to one end of the evaporator 42, the other end of the evaporator 42 is connected to the other inlet end of the heat exchanger 6, and the other outlet end of the heat exchanger 6 is connected to the other end of the compressor 31.

[0030] As shown in some embodiments, the integrated unit includes a solenoid valve 5, which can be arranged in the second accommodating cavity 113, the solenoid valve 5 can be a defrosting solenoid valve, one end of the solenoid valve 5 can be communicated on the pipeline between the oil separator 32 and the condenser 33, and the other end of the solenoid valve 5 can be communicated on the pipeline between the expansion valve 41 and the evaporator 42. Figure 2 Figure 6 As shown in some embodiments, the integrated unit includes a solenoid valve 5, which can be arranged in the second accommodating cavity 113, the solenoid valve 5 can be a defrosting solenoid valve, one end of the solenoid valve 5 can be communicated on the pipeline between the oil separator 32 and the condenser 33, and the other end of the solenoid valve 5 can be communicated on the pipeline between the expansion valve 41 and the evaporator 42.

[0031] When the unit is powered on, the low-pressure evaporation of the refrigerant in the refrigeration system is absorbed by the compressor 31 to become high-pressure steam entering the condenser 33, the condenser fan 36 carries away the heat released by the refrigerant in the condenser 33, so that the high-pressure refrigerant steam is condensed into high-pressure liquid, and then enters the evaporator 42 through the throttling device expansion valve 41, and evaporates at a corresponding low pressure, absorbing heat from the surrounding air. At the same time, the evaporative fan 43 will make the air continuously pass through the fins of the evaporator 42 for heat exchange. The air cooled by heat is sent into the condensing transport vehicle box body, and the air in the box body is circulated alternately, so as to realize temperature regulation in the vehicle compartment.

[0032] Therefore, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value. The above embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments 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 rooftop integrated unit for cold chain, characterized in that: The integrated unit comprises: a shell comprising a first shell and a second shell, the first shell being located above the second shell, the first shell having a first accommodating cavity and a second accommodating cavity, the first shell being provided with a plurality of ventilation holes at the top wall and the side wall of the second accommodating cavity; a heat preservation plate connected between the first shell and the second shell; a condensing assembly comprising a compressor, an oil separator, a liquid accumulator, a condenser, a drying filter and a condensing fan, the compressor, the oil separator, the liquid accumulator and the drying filter being arranged in the first accommodating cavity, the condensing fan and the condenser being arranged in the second accommodating cavity; an evaporating assembly arranged in the second shell, the evaporating assembly comprising an expansion valve, an evaporator and an evaporating fan; wherein one end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to one end of the liquid accumulator, the other end of the liquid accumulator is connected to one end of the drying filter, the other end of the drying filter is connected to one end of the expansion valve, the other end of the expansion valve is connected to one end of the evaporator, and the other end of the evaporator is connected to the other end of the compressor.

2. The integrated unit of claim 1, wherein: The integrated unit comprises a heat exchanger, two inlet ends of the heat exchanger being connected to the drying filter and the evaporator respectively, and two outlet ends of the heat exchanger being connected to the expansion valve and the compressor respectively.

3. The integrated unit of claim 1, wherein: The first shell has a front cover plate and a rear cover plate, both of which are arc-shaped structures, the front cover plate being arranged at the second accommodating cavity, and the front cover plate being provided with the plurality of ventilation holes.

4. The integrated unit of claim 1, wherein: The integrated unit comprises an electromagnetic valve, one end of the electromagnetic valve being communicated on a pipeline between the oil separator and the condenser, and the other end of the electromagnetic valve being communicated on a pipeline between the expansion valve and the evaporator.

5. The integrated unit of claim 1, wherein: The condensing assembly comprises a sight glass, the sight glass being arranged on a pipeline connecting the drying filter and the expansion valve.

6. The integrated unit of claim 1, wherein: The integrated unit comprises a high-voltage switch and a low-voltage switch, the low-voltage switch being arranged on a pipeline between the compressor and the evaporator and being close to one end of the compressor, and the high-voltage switch being arranged on a pipeline between the compressor and the condenser.

7. The integrated unit of claim 1, wherein: The integrated unit comprises an electric control box, the electric control box being provided with a controller, and the electric control box being arranged in the first accommodating cavity.

8. The integrated unit of claim 1, wherein: The second shell has an air outlet on a side close to the evaporator.

9. The integrated unit of claim 2, wherein: The second shell has an air return on a bottom and a side close to the heat exchanger.

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