CN208059377U - A kind of evaporator and its liquid nitrogen storage vehicle for liquid nitrogen refrigerating - Google Patents
A kind of evaporator and its liquid nitrogen storage vehicle for liquid nitrogen refrigerating Download PDFInfo
- Publication number
- CN208059377U CN208059377U CN201820502727.3U CN201820502727U CN208059377U CN 208059377 U CN208059377 U CN 208059377U CN 201820502727 U CN201820502727 U CN 201820502727U CN 208059377 U CN208059377 U CN 208059377U
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- heat exchanger
- evaporator
- wind turbine
- temperature sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a kind of evaporators for liquid nitrogen refrigerating, including control system and evaporator system, evaporator system includes Defrost heater, liquid nitrogen heat exchanger, wind pressure difference switch, wind turbine, return air temperature sensor and exhaust gas temperature sensor, assembling is in liquid nitrogen heat exchanger outer surface, it is equipped with return air temperature sensor at wind turbine air intake vent, exhaust gas temperature sensor is equipped on liquid nitrogen heat exchanger outlet pipe；Wind pressure difference switch is mounted on inside liquid nitrogen heat exchanger, and collected leeway information is sent to control system, and control system is connect with Defrost heater, and Defrost heater is mounted on inside liquid nitrogen heat exchanger.The invention also discloses a kind of liquid nitrogen storage vehicles.The advantages such as that there are cooling rates is fast, simple in structure for the utility model, follow-up maintenance expense is low get vital effect for the promotion and application of liquid nitrogen refrigerating system.
Description
Technical field
The utility model is related to transportation logistics technical fields, and in particular to a kind of evaporator and its liquid for liquid nitrogen refrigerating
Nitrogen refrigerator car.
Background technology
In current freezer carrier refrigeration unit mainly in a manner of mechanical refrigeration based on, mechanical refrigeration refrigerator car
It is required for independent refrigerating plant or equipment, initial investment is big, and operating cost is high, and operational process noise is big, will produce carbon emission
Cause atmosphere pollution.And mechanical refrigerator car pre-coo time and enabling rise again that the time is long, and lowest refrigerating temperature can only arrive -20 DEG C.With
The gradual maturation for liquid nitrogen refrigerating system technology, can solve mechanical refrigeration there are the shortcomings that, become mechanical refrigeration compared with
Good substitute.
Utility model content
The purpose of this utility model is to provide a kind of evaporator of liquid nitrogen refrigerating and its liquid nitrogen storage vehicles, solve tradition
The defect of mechanical refrigeration refrigerator car, while the heat exchanger using liquid nitrogen evaporator as refrigeration system are liquid nitrogen refrigerating system
Popularization provides core component.
To achieve the above object, the technical solution of the utility model is
A kind of evaporator for liquid nitrogen refrigerating, including control system and the evaporator system that is connect with control system, institute
It includes Defrost heater, liquid nitrogen heat exchanger, wind pressure difference switch, wind turbine, return air temperature sensor and exhaust temperature to state evaporator system
Sensor, the external liquid nitrogen feed system of liquid nitrogen heat exchanger connection are spent, external liquid nitrogen feed system conveying liquid nitrogen to liquid nitrogen changes
Hot device, the assembling are equipped with return air temperature sensor at wind turbine air intake vent, are changed in liquid nitrogen in liquid nitrogen heat exchanger outer surface
Hot device outlet pipe is equipped with exhaust gas temperature sensor, and return air temperature sensor and exhaust gas temperature sensor send wind turbine and enter respectively
Draught temperature information and liquid nitrogen heat exchanger outlet pipe temperature information are to control system；The wind pressure difference switch is changed mounted on liquid nitrogen
Inside hot device, the first sampling unit being arranged at wind turbine air intake vent and the second sampling being arranged at liquid nitrogen heat exchanger air outlet
Unit is separately connected wind pressure difference switch, and collected leeway information is sent to control system, control system by wind pressure difference switch
It is also connect with Defrost heater, control system sends a control signal to Defrost heater, and Defrost heater exchanges heat mounted on liquid nitrogen
Inside device.
Preferably, the wind turbine is vertically mounted on liquid nitrogen exchanger base.
Preferably, deflector is fixed with inside the liquid nitrogen heat exchanger, deflector is mounted on the exit of wind turbine, deflector
Wind direction is oriented to liquid nitrogen heat exchanger air outlet direction.
Preferably, radiator coil tube, the external liquid nitrogen feed system of radiator coil tube connection are equipped in the liquid nitrogen heat exchanger.
Preferably, the air outlet of the liquid nitrogen heat exchanger is equipped with radiating fin, and the spacing of radiating fin is 3-8cm.
Preferably, the wind turbine is stepless speed regulating blower fan, degree of protection IP65.
A kind of liquid nitrogen storage vehicle, include evaporator and liquid nitrogen fluid reservoir for liquid nitrogen refrigerating, liquid nitrogen feed system,
Gas exhaust piping, the evaporator are mounted on inside refrigerator carriage body and are in the same space with car transport article, liquid nitrogen storage
Flow container, liquid nitrogen feed system, gas exhaust piping and interior transport article are in different spaces, and the liquid nitrogen fluid reservoir connection liquid nitrogen supplies
To system, liquid nitrogen feed system connects evaporator, and the outlet pipe of evaporator connects gas exhaust piping, and gas exhaust piping is connected to outside
Air.
The utility model has the following advantages that：
The utility model solves the problems, such as that more core, liquid nitrogen are sent into evaporation by feed system in liquid nitrogen refrigerating system
In device, the temperature of particular space, fast, simple in structure, follow-up maintenance that there are cooling rates can be quickly reduced by the conduction that exchanges heat
The advantages such as expense is low get vital effect for the promotion and application of liquid nitrogen refrigerating system.
Description of the drawings
Fig. 1 is a kind of evaporator operation schematic diagram of liquid nitrogen storage vehicle；
Fig. 2 is liquid nitrogen heat exchanger structure schematic diagram；
Fig. 3 is a kind of structural schematic diagram of the refrigerator car of liquid nitrogen vaporization heat exchange refrigeration.
Wherein：
1- evaporator systems, 2- liquid nitrogen feed systems, 3- control systems, 4- liquid nitrogen heat exchangers, 5- wind turbines, 6- leeways are opened
It closes, 7- Defrost heaters, 8- return air temperature sensors, 9- exhaust gas temperature sensors, 10- accessory connectors, 11- deflectors, 12- is cold
Hide vehicle, 13- liquid nitrogen fluid reservoirs, 14- gas exhaust pipings.
Specific implementation mode
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment 1
See Fig. 1, Fig. 2, present embodiment discloses a kind of evaporator for liquid nitrogen refrigerating, including control system 3 and with control
The evaporator system 1 that system 3 processed connects, the evaporator system 1 are opened including Defrost heater 7, liquid nitrogen heat exchanger 4, leeway
6, wind turbine 5, return air temperature sensor 8 and exhaust gas temperature sensor 9 are closed, the liquid nitrogen heat exchanger 4 connects external liquid nitrogen supply system
System 2, external liquid nitrogen feed system 2 convey liquid nitrogen to liquid nitrogen heat exchanger 4, and the wind turbine 5 is mounted on 4 outer surface of liquid nitrogen heat exchanger,
It is equipped with return air temperature sensor 8 at 5 air intake vent of wind turbine, the temperature in carriage body is monitored in real time, in 4 outlet pipe of liquid nitrogen heat exchanger
It is equipped with exhaust gas temperature sensor 9, monitors the temperature of liquid nitrogen evaporator exhaust, return air temperature sensor 8 and delivery temperature in real time
Sensor 9 sends wind turbine air intake vent temperature information and liquid nitrogen heat exchanger outlet pipe temperature information to control system 3, control respectively
System 3 controls the air quantity of wind turbine 5 according to the temperature gap of this two sensor feedbacks, and temperature difference is bigger, and wind speed is bigger, to real
Existing evaporator system 1 and the best match of different operating modes；The wind pressure difference switch 6 is mounted on inside liquid nitrogen heat exchanger 4, and setting exists
The first sampling unit at 5 air intake vent of wind turbine is separately connected with the second sampling unit being arranged at 4 air outlet of liquid nitrogen heat exchanger
Collected leeway information is sent to control system 3 by wind pressure difference switch 6, wind pressure difference switch 6, control system 3 also with defrosting
Heater 7 connects, and control system 3 sends a control signal to Defrost heater 7, and Defrost heater 7 is mounted in liquid nitrogen heat exchanger 4
Portion.Wind pressure difference switch 6 can monitor the wind pressure difference of the inlet and outlet of liquid nitrogen heat exchanger 4 in real time, when frosting degree reaches certain value,
Heat exchange efficiency can substantially reduce, and pressure difference reaches the parameter of setting at this time, and liquid nitrogen refrigerating system 2 closes 2 He of liquid nitrogen feed system
The wind turbine 5 of liquid nitrogen evaporator 4, system enter defrosting mode, open Defrost heater, to ensure that defrosting effect, control system 3 are set
The minimum run time of defrosting is determined, after the completion of defrosting time, wind pressure difference switch 6 detects the pressure of 4 inlet and outlet of liquid nitrogen heat exchanger
Difference, after pressure difference is less than setting value, system enters automatic running pattern (judging operating mode according to temperature in compartment).
Embodiment 2
The present embodiment and 1 technical solution of embodiment are almost the same, differ only in, the wind turbine 5 is vertically mounted on liquid nitrogen
4 bottom of heat exchanger.To reduce the windage of wind turbine, it is fixed with deflector 11 inside the liquid nitrogen heat exchanger 4, deflector 11 is mounted on
Wind direction is oriented to 4 air outlet direction of liquid nitrogen heat exchanger by the exit of wind turbine 5, deflector 11, and the angle of deflector 11 and position are equal
By detailed calculating and experiment matching, the effect to air flow guiding, reduction windage is played, the use of wind turbine 5 is improved
Efficiency.
Embodiment 3
The present embodiment and 1 technical solution of embodiment are almost the same, differ only in, and are equipped with and dissipate in the liquid nitrogen heat exchanger 4
Hot coil, radiator coil tube connection outside liquid nitrogen feed system 2.
During refrigerating operaton, since liquid nitrogen temperature is relatively low, when the food humidity load transported in carriage body is larger,
There are frosts.Therefore, in the present embodiment, the air outlet of liquid nitrogen heat exchanger 4 is equipped with radiating fin, between radiating fin uses greatly
Away from radiating fin, preferred spacing be 3-8cm, can reduce liquid nitrogen evaporator 4 frosting exchange the thermal efficiency influence.
Embodiment 4
The present embodiment and 1 technical solution of embodiment are almost the same, differ only in, and the wind turbine 5 is stepless speed regulating blower fan,
Degree of protection is IP65, and use environment temperature is -50~80 DEG C, to adapt to correspond to required cold value, wind under different operating modes
The air quantity of machine 5 according to different operating modes can carry out the automatic adjustment of air quantity, to realize the refrigerating capacity of liquid nitrogen feed system 2
Match with refrigerating capacity needed for carriage body.
Embodiment 5
See Fig. 3, a kind of liquid nitrogen storage vehicle disclosed in the present embodiment, includes the evaporator and liquid nitrogen for liquid nitrogen refrigerating
Fluid reservoir 13, liquid nitrogen feed system 2 (for the prior art), gas exhaust piping 14, the evaporator are mounted in 12 carriage body of refrigerator car
Portion is simultaneously in car transport article in the same space, liquid nitrogen fluid reservoir 13, liquid nitrogen feed system 2, gas exhaust piping 14 and car
Transport article is in different spaces, and the liquid nitrogen fluid reservoir 13 connects liquid nitrogen feed system 2, the connection evaporation of liquid nitrogen feed system 2
The outlet pipe of device, evaporator connects gas exhaust piping 14 by accessory connector 10, and gas exhaust piping 14 is connected to outside atmosphere.
Temp probe in liquid nitrogen evaporator 4 monitors temperature in compartment in real time, when temperature is higher than set temperature, opens refrigeration
Pattern, while the low-temperature solenoid valve for opening liquid nitrogen feed system 2 (carries pressure charging system, ensures entire inside liquid nitrogen feed system
The operating pressure of system is in setting range), the flow container of liquid nitrogen fluid reservoir 13 passes through the pipeline and valve member stream of liquid nitrogen feed system
The radiator coil tube for entering liquid nitrogen heat exchanger 4, in radiator coil tube after gasification heat absorption, air is driven by wind turbine 5 and is changed with liquid nitrogen in compartment
Liquid nitrogen in hot device 4 carries out cycle heat exchange, and to reach to the refrigeration in refrigerator carriage body, the nitrogen after heat absorption passes through gas exhaust piping
14 are discharged in air, and until temperature is down to the set temperature of control system in compartment, closing refrigeration mode simultaneously closes off liquid nitrogen supply
Wind turbine 5 in system 2 and liquid nitrogen evaporator 4.Refrigerative circle system monitors the temperature at liquid nitrogen heat exchanger 4 by control system 3
Sensor, the solenoid valve of control liquid nitrogen feed system 2, adjustment liquid nitrogen fluid reservoir 13 for flow quantity, and then control in carriage body
Cryogenic temperature.
4 area of liquid nitrogen heat exchanger in the liquid nitrogen storage vehicle of the present embodiment is according to most bad working environments (40 DEG C of environment temperature, compartment
- 20 DEG C of interior temperature) and best liquid nitrogen flow match and calculated, air is discharged in liquid nitrogen after liquid nitrogen evaporator 4
Temperature greatly reduces the waste of liquid nitrogen cold close to case body temperature.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (7)
1. a kind of evaporator for liquid nitrogen refrigerating, which is characterized in that the evaporation being connect including control system and with control system
Device system, the evaporator system include Defrost heater, liquid nitrogen heat exchanger, wind pressure difference switch, wind turbine, return air temperature sensor
And exhaust gas temperature sensor, the external liquid nitrogen feed system of liquid nitrogen heat exchanger connection, external liquid nitrogen feed system convey liquid nitrogen
To liquid nitrogen heat exchanger, the assembling is equipped with return air temperature sensor in liquid nitrogen heat exchanger outer surface at wind turbine air intake vent,
Exhaust gas temperature sensor is equipped on liquid nitrogen heat exchanger outlet pipe, return air temperature sensor and exhaust gas temperature sensor are sent out respectively
Pressure fan air intake vent temperature information and liquid nitrogen heat exchanger outlet pipe temperature information are to control system；The wind pressure difference switch installation
Inside liquid nitrogen heat exchanger, the first sampling unit for being arranged at wind turbine air intake vent and it is arranged at liquid nitrogen heat exchanger air outlet
Second sampling unit is separately connected wind pressure difference switch, and collected leeway information is sent to control system by wind pressure difference switch,
Control system is also connect with Defrost heater, and control system sends a control signal to Defrost heater, and Defrost heater is mounted on
Inside liquid nitrogen heat exchanger.
2. a kind of evaporator for liquid nitrogen refrigerating according to claim 1, which is characterized in that the wind turbine right angle setting
In liquid nitrogen exchanger base.
3. a kind of evaporator for liquid nitrogen refrigerating according to claim 1, which is characterized in that in the liquid nitrogen heat exchanger
Portion is fixed with deflector, and deflector is mounted on the exit of wind turbine, and wind direction is oriented to liquid nitrogen heat exchanger air outlet direction by deflector.
4. a kind of evaporator for liquid nitrogen refrigerating according to claim 1, which is characterized in that in the liquid nitrogen heat exchanger
Equipped with radiator coil tube, the external liquid nitrogen feed system of radiator coil tube connection.
5. a kind of evaporator for liquid nitrogen refrigerating according to claim 1, which is characterized in that the liquid nitrogen heat exchanger
Air outlet is equipped with radiating fin, and the spacing of radiating fin is 3-8cm.
6. a kind of evaporator for liquid nitrogen refrigerating according to claim 1, which is characterized in that the wind turbine is stepless-adjustment
Fast wind turbine, degree of protection IP65.
7. a kind of liquid nitrogen storage vehicle, which is characterized in that include a kind of evaporation for liquid nitrogen refrigerating as described in claim 1-6
Device and liquid nitrogen fluid reservoir, liquid nitrogen feed system, gas exhaust piping, the evaporator is mounted on inside refrigerator carriage body and and vehicle
Interior transport article is in the same space, and liquid nitrogen fluid reservoir, liquid nitrogen feed system, gas exhaust piping and interior transport article are in not
Isospace, the liquid nitrogen fluid reservoir connect liquid nitrogen feed system, and liquid nitrogen feed system connects evaporator, the outlet pipe of evaporator
Gas exhaust piping is connected, gas exhaust piping is connected to outside atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820502727.3U CN208059377U (en) | 2018-04-10 | 2018-04-10 | A kind of evaporator and its liquid nitrogen storage vehicle for liquid nitrogen refrigerating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820502727.3U CN208059377U (en) | 2018-04-10 | 2018-04-10 | A kind of evaporator and its liquid nitrogen storage vehicle for liquid nitrogen refrigerating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208059377U true CN208059377U (en) | 2018-11-06 |
Family
ID=63984343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820502727.3U Active CN208059377U (en) | 2018-04-10 | 2018-04-10 | A kind of evaporator and its liquid nitrogen storage vehicle for liquid nitrogen refrigerating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208059377U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611138A (en) * | 2019-09-02 | 2019-12-24 | 北京航天发射技术研究所 | Cooling system of refrigerator car fuel cell and control method thereof |
| CN111058008A (en) * | 2020-01-16 | 2020-04-24 | 浙江工业大学 | Portable sample platform device of temperature rise or fall based on liquid nitrogen refrigeration |
| CN113454410A (en) * | 2019-01-07 | 2021-09-28 | 费尔南多·约科姆·布兰多 | Device and method for cooling dry ice |
-
2018
- 2018-04-10 CN CN201820502727.3U patent/CN208059377U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454410A (en) * | 2019-01-07 | 2021-09-28 | 费尔南多·约科姆·布兰多 | Device and method for cooling dry ice |
| CN110611138A (en) * | 2019-09-02 | 2019-12-24 | 北京航天发射技术研究所 | Cooling system of refrigerator car fuel cell and control method thereof |
| CN110611138B (en) * | 2019-09-02 | 2021-08-27 | 北京航天发射技术研究所 | Cooling system of refrigerator car fuel cell and control method thereof |
| CN111058008A (en) * | 2020-01-16 | 2020-04-24 | 浙江工业大学 | Portable sample platform device of temperature rise or fall based on liquid nitrogen refrigeration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208059377U (en) | A kind of evaporator and its liquid nitrogen storage vehicle for liquid nitrogen refrigerating | |
| CN103507691B (en) | A kind of energy-saving-type cold storage transport vehicle | |
| CN102059932B (en) | Vehicle air-conditioning apparatus | |
| US10569614B2 (en) | Method and device for refrigerated transport using an indirect injection of a cryogenic liquid and a heating system for maintaining temperature in the event of extremely low outside temperatures | |
| CN102734867A (en) | Air-conditioning device for vehicle | |
| US20180202703A1 (en) | Transport refrigeration unit | |
| CN102713474A (en) | Receiver with flow metering device | |
| CN206812752U (en) | A kind of refrigerator car refrigeration system | |
| CN101336069B (en) | Non-condensation system in a low temperature environment | |
| CN109219722A (en) | Air-conditioning system | |
| CN203511427U (en) | Novel energy-saving refrigerator car | |
| CN104633988A (en) | Air-cooled cold and hot water air conditioning system and control method thereof | |
| CN204115119U (en) | Air-conditioning and refrigerating box all-in-one | |
| CN201226628Y (en) | Non-condensation system in low temperature environment | |
| CN108099546A (en) | A kind of automobile air refrigeration auxiliary device | |
| CN110884324A (en) | Heating control method for cab of pure electric vehicle | |
| CN203543591U (en) | Air conditioner for electric automobile | |
| CN205468400U (en) | Be suitable for constant temperature and humidity's of medicine transportation refrigeration unit | |
| CN201028919Y (en) | Double-temperature double-control structure of single refrigerating system with evaporator inside | |
| CN102529645B (en) | Automobile air-conditioner external unit device | |
| CN203046822U (en) | Air conditioning cycle refrigeration device for liquefied natural gas (LNG) car | |
| CN208442983U (en) | A kind of novel operation of air conditioning systems | |
| CN206317821U (en) | A kind of railway vehicle air conditioner condensing units utilize system | |
| CN216950545U (en) | Heating system of independent cooling and heating unit | |
| CN110481411B (en) | Refrigerator carriage with step air supply function, refrigerator car and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |