CN103900282B - Freezing unit and there is its refrigerator car - Google Patents
Freezing unit and there is its refrigerator car Download PDFInfo
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- CN103900282B CN103900282B CN201210586041.4A CN201210586041A CN103900282B CN 103900282 B CN103900282 B CN 103900282B CN 201210586041 A CN201210586041 A CN 201210586041A CN 103900282 B CN103900282 B CN 103900282B
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- freezing unit
- pipeline
- condenser
- interface
- heat exchanger
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Abstract
The present invention provides a kind of freezing unit and has its refrigerator car, wherein, freezing unit includes condenser (10), throttling arrangement (20), vaporizer (30) and the compressor (50) being sequentially connected with by refrigeration pipe, freezing unit also includes that heat exchanger (70), heat exchanger (70) are connected between condenser (10) and throttling arrangement (20).Present invention efficiently solves the problem that in prior art, in the compartment of refrigerator car, temperature drop speed is the lowest.
Description
Technical field
Present invention relates particularly to a kind of freezing unit and there is its refrigerator car.
Background technology
In prior art, refrigerator car generally uses freezing unit and meets its freezing demand, general by freezing unit by refrigerator carriage
Temperature refrigeration to-18 DEG C or lower.When just start in case temperature drop quickly, but along with in compartment temperature more and more lower, in compartment
Temperature reduces with the evaporating temperature temperature difference of vaporizer, and in railway carriage or compartment, heat exchange amount reduces, and temperature drop speed is more and more lower.
Summary of the invention
It is desirable to provide a kind of freezing unit and there is its refrigerator car, to solve in prior art temperature in the compartment of refrigerator car
The problem that reduction of speed degree is the lowest.
To achieve these goals, according to an aspect of the invention, it is provided a kind of freezing unit, including passing through refrigeration pipe
Condenser, throttling arrangement, vaporizer and the compressor being sequentially connected with, freezing unit also includes heat exchanger, and heat exchanger is connected to cold
Between condenser and throttling arrangement.
Further, freezing unit is additionally provided with four-way change-over valve and the first gas-liquid separator, the first gas-liquid separator and compressor
Entrance connection, the first interface of four-way change-over valve connects with condenser with the outlet of compressor, the second interface, the 3rd connect
Mouth connects with the first gas-liquid separator and the 4th interface connects with vaporizer, and four-way change-over valve has first interface and the second interface
Connection, the 3rd interface and the first state of the 4th orifice and have first interface and the 4th orifice, the second interface and
Second state of the 3rd orifice.
Further, condenser includes main condenser and the auxiliary condenser being arranged in series, between main condenser and auxiliary condenser
Pipeline on be provided with the second gas-liquid separator, freezing unit also includes the first pipeline, and the first end of the first pipeline connects second
The outlet of gas-liquid separator, the second end connection of the first pipeline is at the entrance of main condenser.
Further, exsiccator and liquid-sighting glass it have been arranged in series between auxiliary condenser and heat exchanger.
Further, freezing unit also includes the second pipeline being arranged in parallel with throttling arrangement, and the second pipeline is provided with unloader.
Further, throttling arrangement is heating power expansion valve.
Further, freezing unit also include the 3rd pipeline, the first end of the 3rd pipeline be connected to vaporizer and four-way change-over valve it
Between, the second end of the 3rd pipeline is connected between the first end and the heating power expansion valve of the second pipeline, and the 3rd pipeline has been arranged in series
Check valve, defrost pipe and capillary tube.
According to a further aspect in the invention, it is provided that a kind of refrigerator car, including above-mentioned freezing unit, refrigerator car is additionally provided with use
The cool source member of low-temperature receiver is provided in the heat exchanger giving freezing unit.
Further, refrigerator car also includes driver's cabin, and cool source member is the interior air-conditioner arranged of driver's cabin, and driver's cabin is provided with use
In the air outlet of air-conditioner air draft, the heat exchanger of freezing unit is arranged at air outlet.
Application technical scheme, condenser that freezing unit includes being sequentially connected with by refrigeration pipe, throttling arrangement, steaming
Sending out device and compressor, freezing unit also includes heat exchanger, and heat exchanger is connected between condenser and throttling arrangement.Freezing unit profit
With the heat exchanger before throttling, carry out heat exchange by low-temperature receiver heat exchanger, improve the degree of supercooling of heat exchanger, so condenser along with
The increase of degree of supercooling and promote its refrigerating capacity, so increase complete machine refrigerating capacity, make the cooling rate in compartment be accelerated, and
As long as owing to the heat exchanger section low-temperature receiver blowing temperature when carrying out heat exchange is less than 20 degree, it is not necessary to use freezing unit itself
Cryogenic gas, it is possible to effectively ensure that the temperature drop speed in refrigerated vehicle carriage gets a promotion.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the system schematic of the embodiment of the freezing unit of the present invention；
Fig. 2 shows that the coolant of the defrosting mode of the freezing unit of Fig. 1 flows to schematic diagram；
Fig. 3 shows the structural representation of the embodiment of the refrigerator car of the present invention；
Fig. 4 shows freezing unit and the pressure-enthalpy chart of freezing unit in prior art of Fig. 1；
Fig. 5 shows the freezing unit of Fig. 1 and the contrast schematic diagram of the cooling-down effect of freezing unit of the prior art.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The invention provides the embodiment of freezing unit, referring specifically to Fig. 1, the freezing unit of the present embodiment includes passing through refrigeration pipe
Condenser 10, throttling arrangement 20, vaporizer 30 and the compressor 50 being sequentially connected with, freezing unit also includes heat exchanger 70, changes
Hot device 70 is connected between condenser 10 and throttling arrangement 20.
Freezing unit utilizes the heat exchanger before throttling, carries out heat exchange by low-temperature receiver heat exchanger, improves the degree of supercooling of heat exchanger,
And then condenser promotes its refrigerating capacity along with the increase of degree of supercooling, so increase complete machine refrigerating capacity, make cooling rate be added
Hurry up, as long as and owing to the heat exchanger section low-temperature receiver blowing temperature when carrying out heat exchange is less than 20 degree, it is not necessary to use freezing
The cryogenic gas of unit itself, it is possible to effectively ensure that the temperature drop speed in refrigerated vehicle carriage gets a promotion.Pressure at Fig. 4
In enthalpy diagram, 1-2-3-4 is the parameter line of freezing unit in prior art, and 1-2-5-6 is the parameter line of the freezing unit of the present embodiment,
As can be seen from Figure 4 the cold of the freezing unit of the present embodiment adds Δ Q, and refrigerating capacity promotes the most obvious.As it is shown in figure 5,
In figure, abscissa represents that ambient temperature, vertical coordinate represent the time being reduced to needed for relevant temperature point, ambient temperature when 32 degree,
This machine set compressor runs with 1800 speed of walking around, and is lowered the temperature by same refrigerated vehicle carriage by 32 degree, until cannot reduce,
Contrast from the cooling-down effect of Fig. 5 it can be seen that the freezing unit cooling rate of the present embodiment is the fastest, just dropping to less than 50 minutes
0 degree, drop to-18 degree and only used about 160 minutes；And minimum-15 degree that can only be reduced to of freezing unit of prior art, and from
When temperature is below 5 degree, cooling rate is substantially slow than the freezing unit of the present embodiment, so the freezing unit of the present embodiment exists
The quickening more obvious than prior art of cooling rate aspect, still can keep cooling rate faster when temperature is relatively low.
Freezing unit is additionally provided with four-way change-over valve 60 and the first gas-liquid separator 41, the first gas-liquid separator 41 and compressor 50
Entrance connection, the first interface of four-way change-over valve 60 connects with condenser 10 with outlet, second interface of compressor 50,
3rd interface and the first gas-liquid separator 41 connect and the 4th interface connects with vaporizer 30, and four-way change-over valve 60 has first
Interface and the second orifice, the 3rd interface and the first state of the 4th orifice and there is first interface and the 4th interface even
Logical, the second interface and the second state of the 3rd orifice.
Condenser 10 includes main condenser 11 and the auxiliary condenser 12 being arranged in series, main condenser 11 and auxiliary condenser 12
Between pipeline on be provided with the second gas-liquid separator 42, freezing unit also includes the first pipeline, the first end connection of the first pipeline
In the outlet of the second gas-liquid separator 42, the second end connection of the first pipeline is at the entrance of main condenser 11.
Exsiccator 81 and liquid-sighting glass 82 it has been arranged in series between auxiliary condenser 12 and heat exchanger 70.Freezing unit also includes and joint
The second pipeline that stream device 20 is arranged in parallel, the second pipeline is provided with unloader 83.Throttling arrangement 20 is heating power expansion valve.
Freezing unit also includes that the 3rd pipeline, the first end of the 3rd pipeline are connected between vaporizer 30 and four-way change-over valve 60,
Second end of the 3rd pipeline is connected between the first end and the heating power expansion valve of the second pipeline, the 3rd pipeline has been arranged in series unidirectional
Valve 91, defrost pipe 92 and capillary tube 93.
When four-way change-over valve 60 is in the first state, freezing unit is the refrigeration mode that complete machine carries out freezing, referring specifically to Fig. 1；
When four-way change-over valve 60 is in the second state, freezing unit is the defrosting mode that complete machine carries out defrosting, referring specifically to Fig. 2, when
Freezing unit is under defrosting mode, and the coolant one-way flow in pipeline enters the 3rd pipeline, and is defrosted by defrost pipe 92.
The pattern switching of freezing unit selects according to concrete needs.
Present invention also offers the embodiment of a kind of refrigerator car, referring specifically to Fig. 3, the refrigerator car of the present embodiment includes above-described embodiment
Freezing unit, refrigerator car is additionally provided with the cool source member for providing low-temperature receiver to the heat exchanger of freezing unit.
The present embodiment is it is further preferred that refrigerator car also includes driver's cabin, and cool source member is the interior air-conditioner arranged of driver's cabin, drives
Sailing room and be provided with the air outlet for air-conditioner air draft, the heat exchanger 70 of freezing unit is arranged at air outlet.Wherein arrow in figure
Being the air outlet of driver's cabin air-conditioning at A indication, the present embodiment utilizes refrigerator car to drive the room conditioning heat exchanger as freezing unit
Low-temperature receiver, the air outlet of a part of air-conditioning cold wind is caused the position near compartment, and heat exchanger is arranged at air outlet and obtains
Enough low-temperature receiver supplies.It should be strongly noted that the present embodiment only passes through the air-conditioning cold wind low-temperature receiver as heat exchanger of driver's cabin,
But cool source member is not limited to use the driver's cabin air-conditioning of refrigerator car, as refrigerator car peripheral hardware one provides the refrigerator of cold wind.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a freezing unit, including the condenser (10) being sequentially connected with by refrigeration pipe, throttling arrangement (20), vaporizer (30)
With compressor (50), it is characterised in that
Described freezing unit also includes that heat exchanger (70), described heat exchanger (70) are connected to described condenser (10) and institute
State between throttling arrangement (20)；
Described freezing unit also includes the second pipeline being arranged in parallel with described throttling arrangement (20), on described second pipeline
It is provided with unloader (83).
Freezing unit the most according to claim 1, it is characterised in that described freezing unit is additionally provided with four-way change-over valve (60)
With the first gas-liquid separator (41), described first gas-liquid separator (41) connects with the entrance of described compressor (50),
The first interface of described four-way change-over valve (60) is cold with described with the outlet of described compressor (50), the second interface
Condenser (10) connection, the 3rd interface connect with described first gas-liquid separator (41) and the 4th interface and described evaporation
Device (30) connects, and described four-way change-over valve (60) has first interface and the second orifice, the 3rd interface and the 4th
First state of orifice and there is the of first interface and the 4th orifice, the second interface and the 3rd orifice
Two-state.
Freezing unit the most according to claim 2, it is characterised in that described condenser (10) includes that the master being arranged in series is cold
Condenser (11) and auxiliary condenser (12), on the pipeline between described main condenser (11) and auxiliary condenser (12)
Being provided with the second gas-liquid separator (42), described freezing unit also includes the first pipeline, and the first end of described first pipeline is even
Leading to the outlet described second gas-liquid separator (42), the second end of described first pipeline connects in described main condenser (11)
Entrance.
Freezing unit the most according to claim 3, it is characterised in that described auxiliary condenser (12) and described heat exchanger (70)
Between be arranged in series exsiccator (81) and liquid-sighting glass (82).
Freezing unit the most according to claim 1, it is characterised in that described throttling arrangement (20) is heating power expansion valve.
Freezing unit the most according to claim 5, it is characterised in that described freezing unit also includes the 3rd pipeline, described the
First end of three pipelines is connected between described vaporizer (30) and described four-way change-over valve (60), described 3rd pipeline
The second end be connected between the first end and the described heating power expansion valve of described second pipeline, described 3rd pipeline is connected and sets
It is equipped with check valve (91), defrost pipe (92) and capillary tube (93).
7. a refrigerator car, it is characterised in that include the freezing unit according to any one of claim 1 to 6, described refrigerator car
It is additionally provided with the cool source member for providing low-temperature receiver to the heat exchanger of described freezing unit.
Refrigerator car the most according to claim 7, it is characterised in that described refrigerator car also includes driver's cabin, described cool source member
For the air-conditioner arranged in described driver's cabin, described driver's cabin is provided with the air outlet for air-conditioner air draft, described freezing
The heat exchanger (70) of unit is arranged at described air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586041.4A CN103900282B (en) | 2012-12-28 | 2012-12-28 | Freezing unit and there is its refrigerator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586041.4A CN103900282B (en) | 2012-12-28 | 2012-12-28 | Freezing unit and there is its refrigerator car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103900282A CN103900282A (en) | 2014-07-02 |
| CN103900282B true CN103900282B (en) | 2016-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210586041.4A Active CN103900282B (en) | 2012-12-28 | 2012-12-28 | Freezing unit and there is its refrigerator car |
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| Country | Link |
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| CN (1) | CN103900282B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671740B (en) * | 2017-01-03 | 2023-07-21 | 埃贝思(天津）新能源技术有限公司 | Energy-saving vehicle-mounted refrigerating system |
| CN108731291A (en) * | 2018-08-10 | 2018-11-02 | 中化蓝天霍尼韦尔新材料有限公司 | A method of it freezing machine set system and reduces its energy consumption and improve its stability |
| CN114294851B (en) * | 2022-01-17 | 2024-03-26 | 山东绿泉空调科技有限公司 | Double-stage direct-current variable-frequency overlapping extremely-cold machine set system |
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|---|---|---|---|---|
| JP2002327969A (en) * | 2001-04-26 | 2002-11-15 | Mitsubishi Heavy Ind Ltd | Refrigerating system |
| JP2002372320A (en) * | 2001-06-15 | 2002-12-26 | Matsushita Electric Ind Co Ltd | Refrigerating device |
| CN1818506A (en) * | 2005-02-10 | 2006-08-16 | 日立空调系统株式会社 | Refrigerating apparatus |
| WO2008001525A1 (en) * | 2006-06-27 | 2008-01-03 | Yanmar Co., Ltd. | Refrigerated container |
| CN101603705A (en) * | 2009-07-09 | 2009-12-16 | 苏宇贵 | The thermoregulation and dehumidification type water loop heat pump unit |
| CN102549356A (en) * | 2009-08-17 | 2012-07-04 | 江森自控科技公司 | Heat-pump chiller with improved heat recovery features |
| CN203053077U (en) * | 2012-12-28 | 2013-07-10 | 珠海格力电器股份有限公司 | Refrigerating unit and refrigerator car with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011087001A1 (en) * | 2010-01-12 | 2011-07-21 | 本田技研工業株式会社 | Air conditioning system for vehicle |
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2012
- 2012-12-28 CN CN201210586041.4A patent/CN103900282B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002327969A (en) * | 2001-04-26 | 2002-11-15 | Mitsubishi Heavy Ind Ltd | Refrigerating system |
| JP2002372320A (en) * | 2001-06-15 | 2002-12-26 | Matsushita Electric Ind Co Ltd | Refrigerating device |
| CN1818506A (en) * | 2005-02-10 | 2006-08-16 | 日立空调系统株式会社 | Refrigerating apparatus |
| WO2008001525A1 (en) * | 2006-06-27 | 2008-01-03 | Yanmar Co., Ltd. | Refrigerated container |
| CN101603705A (en) * | 2009-07-09 | 2009-12-16 | 苏宇贵 | The thermoregulation and dehumidification type water loop heat pump unit |
| CN102549356A (en) * | 2009-08-17 | 2012-07-04 | 江森自控科技公司 | Heat-pump chiller with improved heat recovery features |
| CN203053077U (en) * | 2012-12-28 | 2013-07-10 | 珠海格力电器股份有限公司 | Refrigerating unit and refrigerator car with same |
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| Publication number | Publication date |
|---|---|
| CN103900282A (en) | 2014-07-02 |
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