CN205860542U - Carbon dioxide refrigerating system - Google Patents
Carbon dioxide refrigerating system Download PDFInfo
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- CN205860542U CN205860542U CN201620818910.5U CN201620818910U CN205860542U CN 205860542 U CN205860542 U CN 205860542U CN 201620818910 U CN201620818910 U CN 201620818910U CN 205860542 U CN205860542 U CN 205860542U
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Abstract
The utility model discloses a kind of carbon dioxide refrigerating system, including: compressor, compressor is provided with air vent, the first air entry and the second air entry, the first air entry and the connection of the first cylinder, the second air entry and the connection of the second cylinder；Outdoor heat exchanger, the first import of outdoor heat exchanger connects with air vent, and the first exit of outdoor heat exchanger is provided with first throttle device；Indoor heat exchanger, the second outlet of indoor heat exchanger connects with the first air entry, and the second import department of indoor heat exchanger is provided with the second throttling arrangement；Recuperative heat exchanger, limits the first heat exchanging chamber and the second heat exchanging chamber in Recuperative heat exchanger, the first heat exchanging chamber is connected between the first outlet and the second throttling arrangement, and the second heat exchanging chamber is connected between first throttle device and the second air entry；Wherein the volume V1 of the first cylinder and the volume V2 of the second cylinder meets: 0.05≤V2/V1≤0.5.The application is to consider in terms of system and compressor arrangement two simultaneously, improves the efficiency of carbon dioxide refrigerating system.
Description
Technical field
This utility model relates to refrigeration technology field, especially relates to a kind of carbon dioxide refrigerating system.
Background technology
How to improve the trend that carbon dioxide refrigerating system efficiency is refrigeration industry at present, Ge great producer is all falling over each other
This technology is studied on ground.How air-conditioning manufacturer, from system perspective, improves heat exchange efficiency, improves the aspects such as flow path character and grind
Studying carefully self-criticism, compressor manufacturer is then studied in terms of how improving compressor mechanical efficiency, electric efficiency, volumetric efficiency etc.
Self-criticism.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this reality
With novel proposition one carbon dioxide refrigerating system, the application is same in terms of carbon dioxide refrigerating system and compressor arrangement two
Time consider, improve the efficiency of carbon dioxide refrigerating system.
According to the carbon dioxide refrigerating system of this utility model embodiment, including: compressor, have in described compressor
One cylinder and the second cylinder, described compressor is provided with air vent, the first air entry and the second air entry, described first air entry
Connecting with described first cylinder, described second air entry connects with described second cylinder；Outdoor heat exchanger, described outdoor heat exchanger
Having the first import and the first outlet, described first import connects with described air vent, and described first exit is provided with first segment
Stream device；Indoor heat exchanger, described indoor heat exchanger has the second import and the second outlet, and described second outlet is with described first
Air entry connects, and described second import department is provided with the second throttling arrangement；Recuperative heat exchanger, limits in described Recuperative heat exchanger
One heat exchanging chamber and the second heat exchanging chamber, described first heat exchanging chamber is connected between described first outlet and described second throttling arrangement,
Described second heat exchanging chamber is connected between described first throttle device and described second air entry；Described carbon dioxide refrigerating system
Interior filled coolant is carbon dioxide, and the volume V1 of wherein said first cylinder and the volume V2 of described second cylinder meets such as
Lower relational expression: 0.05≤V2/V1≤0.5.
According to the carbon dioxide refrigerating system of this utility model embodiment, by arranging return-air heat exchanger in systems, will
In return-air heat exchanger, carry out heat exchange after the coolant distribution discharged from outdoor heat exchanger, and by the volume V1 of the first cylinder and
The volume V2 of the second cylinder is designed as 0.05≤V2/V1≤0.5, thus according to the carbon dioxide refrigeration of this utility model embodiment
System considers in terms of system stream angle and compressor arrangement angle two respectively and improves, thus this carbon dioxide system
The efficiency of cooling system is high, it is possible to reach optimal energy efficiency state.
The coolant filled in carbon dioxide refrigerating system according to embodiments of the present invention is carbon dioxide.It is to say,
The coolant of carbon dioxide refrigerating system according to embodiments of the present invention is carbon dioxide coolant, thus, implements according to the present invention
The carbon dioxide refrigerating system of example is when filled carbon dioxide is coolant, and its effect improved for the energy-absorbing of system is brighter
Aobvious, say, that carbon dioxide refrigerating system according to embodiments of the present invention is more suitable for the circulation of carbon dioxide coolant.
In some preferred embodiments, the volume V1 of described first cylinder and the volume V2 of described second cylinder meets as follows
Relational expression: 0.1≤V2/V1≤0.4.
In some preferred embodiments, the volume V1 of described first cylinder and the volume V2 of described second cylinder meets as follows
Relational expression: 0.15≤V2/V1≤0.3.
In some preferred embodiments.
In some preferred embodiments, it is provided with the first gas-liquid separator at described first air entry.
In some preferred embodiments, it is provided with the second gas-liquid separator at described second air entry.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from explained below
In become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from combining general the accompanying drawings below description to embodiment
Become obvious and easy to understand, wherein:
Fig. 1 is the carbon dioxide refrigerating system schematic diagram according to this utility model embodiment；
Fig. 2 is the carbon dioxide refrigerating system pressure-enthalpy chart described in Fig. 1.
Reference:
Carbon dioxide refrigerating system 100；
Compressor 10；First cylinder 11；Second cylinder 12；Air vent 13；First air entry 14；Second air entry 15；
Outdoor heat exchanger 20；First import 21；First outlet 22；
Indoor heat exchanger 30；Second import 31；Second outlet 32；
Recuperative heat exchanger 40；First throttle device 50；Second throttling arrangement 60；First gas-liquid separator 70.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, and is only used for explaining this utility model, and it is not intended that to of the present utility model
Limit.
In description of the present utility model, it is to be understood that term " first ", " second " are only used for describing purpose, and
It is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define
The feature of " first ", " second " can express or implicitly include one or more this feature.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals or two
The interaction relationship of element.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in this utility model.
Below with reference to Fig. 1 and Fig. 2, carbon dioxide refrigerating system 100 according to embodiments of the present invention is described.
As it is shown in figure 1, carbon dioxide refrigerating system 100 according to embodiments of the present invention, including: compressor 10, outdoor are changed
Hot device 20, indoor heat exchanger 30, Recuperative heat exchanger 40, first throttle device 50 and the second throttling arrangement 60.
Having the first cylinder 11 and the second cylinder 12 in compressor 10, compressor 10 is provided with air vent the 13, first air-breathing
Mouth 14 and the second air entry 15, the first air entry 14 connects with the first cylinder 11, and the second air entry 15 connects with the second cylinder 12.
First air entry 14 is for the air-breathing of the first cylinder 11, and the second air entry 15 is for the air-breathing of the second cylinder 12.First cylinder 11
After the first air entry 14 air-breathing, compressing in the first cylinder 11, the high pressure coolant after compression enters from the first cylinder 11 again
To the housing of compressor 10；In like manner, the second cylinder 12, by after the second air entry 15 air-breathing, compresses in the second cylinder 12,
High pressure coolant after compression enters to the housing of compressor 10 from the second cylinder 12 again.From the first cylinder 11 and the second cylinder 12
After the high pressure coolant that group discharges mixes in the housing of compressor 10, all by air vent 13 row arranged on compressor 10
Go out, thus participate in the refrigerant circulation of carbon dioxide refrigerating system 100.
Outdoor heat exchanger 20 has the first import 21 and the first outlet 22, and the first import 21 connects with air vent 13, and first
Exporting and be provided with first throttle device 50 at 22, indoor heat exchanger 30 has the second import 31 and the second outlet 32, the second outlet 32
Connect with the first air entry 14, at the second import 31, be provided with the second throttling arrangement 60, limit first in Recuperative heat exchanger 40 and change
Hot chamber and the second heat exchanging chamber, the first heat exchanging chamber is connected between the first outlet 22 and the second throttling arrangement 60, and the second heat exchanging chamber is even
It is connected between first throttle device 50 and the second air entry 15.
Thus, the high pressure coolant discharged from compressor 10 air vent 13, enter into outdoor heat exchanger 20 through the first import 21
In, carry out heat exchange with outdoor environment, be divided into two-way from the coolant of the first outlet 22 discharge, wherein a road is through Recuperative heat exchanger 40
First heat exchanging chamber, the second throttling arrangement 60 enter into the second import 31 of indoor heat exchanger 30, and indoor heat exchanger 30 with
Indoor environment carries out heat exchange, and the first cylinder 11 that the coolant after heat exchange is returned to compressor 10 by the first air entry 14 is compressed；
Another road is after first throttle device 50 throttles, and the second heat exchanging chamber at Recuperative heat exchanger 40 changes with aforesaid refrigerant flow
After heat, the second air entry 15 the second cylinder 12 returning to compressor 10 is compressed, and so circulates.
It is to say, the first cylinder 11 is for receiving the coolant after indoor heat exchanger 30 heat exchange, the second cylinder 12 is used
In receiving without indoor heat exchanger 30 heat exchange, and the coolant directly after outdoor heat exchanger 20 is discharged, after throttling.And these are two years old
Road coolant carries out heat exchange in Recuperative heat exchanger 40.
In an embodiment of the present invention, the volume V1 of the first cylinder 11 and volume V2 of the second cylinder 12 meets following relation
Formula: 0.05≤V2/V1≤0.5.
Carbon dioxide refrigerating system 100 according to embodiments of the present invention, by arranging return-air heat exchanger in systems, will be from
In return-air heat exchanger, heat exchange is carried out after the coolant distribution discharged in outdoor heat exchanger 20, and by the volume V1 of the first cylinder 11
It is designed as 0.05≤V2/V1≤0.5, thus according to the carbon dioxide refrigeration of the embodiment of the present invention with the volume V2 of the second cylinder 12
System 100 considers in terms of system stream angle and compressor 10 structural point two respectively and improves, thus this dioxy
The efficiency changing carbon refrigeration system 100 is high, it is possible to reach optimal energy efficiency state.
Additionally, the interior coolant filled of carbon dioxide refrigerating system 100 according to embodiments of the present invention is carbon dioxide.Also
That is, the coolant of carbon dioxide refrigerating system 100 according to embodiments of the present invention is carbon dioxide coolant, thus, according to
The carbon dioxide refrigerating system 100 of the embodiment of the present invention is when filled carbon dioxide is coolant, and it improves for the energy-absorbing of system
Effect become apparent from, say, that carbon dioxide refrigerating system 100 according to embodiments of the present invention is more suitable for carbon dioxide
The circulation of cold-producing medium.
Below with reference to Fig. 1 and Fig. 2, describe carbon dioxide refrigerating system 100 according to embodiments of the present invention in detail.
As it is shown in figure 1, in carbon dioxide refrigerating system 100 according to embodiments of the present invention, have first in compressor 10
Cylinder 11 and the second cylinder 12, compressor 10 is provided with the first air entry 14 connected with the first cylinder 11, with the second cylinder 12
Second air entry 15 of connection, the coolant after the first cylinder 11 and the second cylinder 12 compress all is discharged from air vent 13.
Outdoor heat exchanger 20 includes the first import 21 and the first outlet 22, and indoor heat exchanger 30 includes the second import 31 and the
Two outlets 32, the first outlet 22 connects with the second import 31, the first import 21 of outdoor heat exchanger 20 and the aerofluxus of compressor 10
Mouth 13 connection, the second outlet 32 of indoor heat exchanger 30 connects with the first air entry 14 of compressor 10.
From the coolant of the first outlet 22 outflow of outdoor heat exchanger 20, being divided into secondary air road, wherein the first plume road is cold
Matchmaker flows into indoor heat exchanger 30 by the second throttling arrangement 60, then flows to the first air entry 14 of compressor 10, the second plume road
Coolant by flowing to the second air entry 15 of compressor 10 after first throttle device 50.
Recuperative heat exchanger 40 is that the heat exchange of above-mentioned two strands of refrigerant flows provides place, after first throttle device 50
Coolant and the coolant on the first plume road have heat to exchange in Recuperative heat exchanger 40, after heat exchange, the coolant on the first plume road
Just enter indoor heat exchanger 30 through the second throttling arrangement 60.But there is heat exchange coolant on two plume roads in Recuperative heat exchanger 40
There is not mixing phenomena.
Carbon dioxide refrigerating system 100 according to embodiments of the present invention, the high pressure-temperature after compressor 10 compresses
Coolant enters in outdoor heat exchanger 20 after discharging compressor 10, and outdoor heat exchanger 20 and outdoor environment temperature exist the temperature difference, room
Heat is exchanged to outdoor environment by external heat exchanger 20, thus the temperature of the coolant of high pressure-temperature can reduce progressively become liquid or
Gas-liquid mixture delivery chamber external heat exchanger 20.
The coolant of delivery chamber's external heat exchanger 20 is divided into secondary air road, and the first plume road is the coolant towards indoor heat exchanger 30
Stream, the second plume road for first flowing through first throttle device 50, this first throttle device 50 can be capillary tube, choke valve or
Electric expansion valves etc., the coolant after first throttle device 50 flows toward the second air entry 15 of compressor 10.At first strand
Stream leads to before indoor heat exchanger 30, is provided with Recuperative heat exchanger 40 in system, this make first strand without throttling coolant with
Second stock-traders' know-how is crossed the coolant after throttling and is carried out heat exchange, and thus first strand of coolant is the most cooled, the most again through the second throttling dress
Put 60 to throttle；And after the heat absorption of second strand of coolant, progressively change into gaseous state, and enter in entering into compressor 10 second cylinder 12
Row compression.
Wherein, the flow process of above-mentioned coolant is referred to the pressure-enthalpy chart of Fig. 2 and is described in further details, and it is possible to
Clearly embody the reason that efficiency promotes.
As in figure 2 it is shown, from the beginning of compressor 10, the pressure enthalpy position of the coolant of the high pressure-temperature after compressor 10 compresses
In 2 and 3 ' places, this coolant at two enters in outdoor heat exchanger 20 after discharging compressor 10, outdoor heat exchanger 20 and outdoor ring
There is the temperature difference in border temperature, heat is exchanged to outdoor environment by outdoor heat exchanger 20, thus the pressure enthalpy meeting of the coolant of high pressure-temperature
Reduce by 6 points, delivery chamber's external heat exchanger 20.
The coolant of delivery chamber's external heat exchanger 20 is divided into secondary air road, and the first plume road is cold towards indoor heat exchanger 30
Matchmaker, the second plume road throttles after flowing through first throttle device 50, and pressure enthalpy is reduced to 7 points, and the coolant state of 7 is gas-liquid mixed
Thing, this mixture flows to the second air entry 15 of compressor 10.First plume road, before indoor heat exchanger 30, is changed in backheat
Coolant heat exchange after throttling with the second stock-traders' know-how first throttle device 50 in hot device 40, say, that after the second plume road coolant throttle
Being positioned at the coolant of 7 and first strand of coolant anteposition that do not throttles carries out heat exchange in the coolant of 6, thus first strand of coolant can be entered
One step is cooled to the state pressing enthalpy to be at 8, then enters back into first throttle device 50, after being throttled by first throttle device 50
Become the state that pressure enthalpy is at 9 and enter indoor heat exchanger 30, and progressively change into gaseous state 3 entrance after second burst of coolant heat absorption
Compress to compressor 10 second cylinder 12 suction inlet.
In above process, due to heat regenerative system so that first strand of refrigerant flow is crossed and be cooled to 8 points, this can improve dioxy
Change the ability of carbon refrigeration system 100, i.e. refrigerating capacity.And have employed the compressor 10 of the present invention so that second strand of refrigerant flow exists
In Recuperative heat exchanger 40, the pressure enthalpy after heat exchange is 3 dotted state, and the second cylinder 12 entering compressor 10 is compressed, then press enthalpy
Value is positioned at the compression process at 3 and is represented by the 3-3 ' process of Fig. 2, and the compression process relative to the 1-2 of Fig. 2 is clearly saved
Compression power consumption, thus this compressor 10 and carbon dioxide refrigerating system 100 thereof can bring the lifting of efficiency.
In an embodiment of the present invention, the volume of the first cylinder 11 is V1, and the volume of the second cylinder 12 is that V2, V1 and V2 are full
Foot: 0.05≤V2/V1≤0.5.
Carbon dioxide refrigerating system 100 according to the present invention, the coolant quality on the second plume road should be much smaller than the first plume
The coolant on road, the coolant of the most whole carbon dioxide refrigerating system 100 answers major part to flow through the first plume road, to ensure that indoor are changed
The evaporation demand of hot device 30.According to this demand, second strand of coolant enters into compressor 10 second cylinder 12 mass much smaller than first
Stock coolant enters into compressor 10 first cylinder 11 mass, and the most preferably V1 and V2 meets: 0.05≤V2/V1≤0.5.
Air-conditioner according to embodiments of the present invention, by arranging carbon dioxide refrigerating system 100 as above, makes the second cylinder
12 delivery spaces meet 0.05≤V2/V1≤0.5 with the ratio of the delivery space of the first cylinder 11, can be effectively improved dioxy
Change the performance of carbon refrigeration system 100, make air-conditioner can reach optimal energy efficiency state.
More preferably V1 and V2 meets: 0.1≤V2/V1≤0.4.
Preferably V1 and V2 meets: 0.15≤V2/V1≤0.3.
Limited by the scope of above-mentioned V2/V1 and can ensure this compressor 10 and carbon dioxide refrigerating system thereof to greatest extent
The energy valid value of 100.
The coolant filled in refrigeration system 100 according to embodiments of the present invention is carbon dioxide.It is to say, according to this
The coolant of the refrigeration system 100 of inventive embodiments is carbon dioxide coolant, thus, and refrigeration system according to embodiments of the present invention
100 when filled carbon dioxide is coolant, and its effect improved for the energy-absorbing of system becomes apparent from, say, that according to this
The refrigeration system 100 of inventive embodiments is more suitable for the circulation of carbon dioxide coolant.
In a preferred embodiment of the invention, it is provided with the first gas-liquid separator 70 at the first air entry 14.Thus can keep away
After the cold-producing medium exempting to enter at the first air entry 14 is mixed with liquid or impurity component, compressor 10 is produced harmful effect,
Thus compressor 10 can be played the effect of being effectively protected.
In like manner, in a preferred embodiment of the invention, the second gas-liquid separator can also be provided with at the second air entry 15.Change
Yan Zhi, the gas-liquid separator arranged at the gas-liquid separator arranged at the first air entry 14 and the second air entry 15 is different zero
Parts, say, that the first air entry 14 and the second air entry 15 enter back into phase respectively through after different gas-liquid separators
In the cylinder answered, thus can make to enter into that the coolant in the first cylinder 11 and the second cylinder 12 is the most blended enters directly into phase
It is compressed in the cylinder answered, thereby may be ensured that the coolant of carbon dioxide refrigerating system 100 flows to different from compressor 10
The temperature and pressure of cylinder air-breathing, and then ensure the refrigeration performance of carbon dioxide refrigerating system 100.
To sum up, carbon dioxide refrigerating system 100 according to embodiments of the present invention, by arranging return-air heat exchange in systems
Device, in return-air heat exchanger carries out heat exchange after the coolant distribution will discharged from outdoor heat exchanger 20, and by the first cylinder 11
Volume V1 and the volume V2 of the second cylinder 12 be designed as 0.05≤V2/V1≤0.5, thus according to the dioxy of the embodiment of the present invention
Change carbon refrigeration system 100 consider in terms of system stream angle and compressor 10 structural point two respectively and improve, from
And the efficiency of this carbon dioxide refrigerating system 100 is high, it is possible to reach optimal energy efficiency state.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " concrete example " or " some examples " etc. means to combine this embodiment or the specific features of example description, knot
Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or
Person's feature can combine in any one or more embodiments or example in an appropriate manner.
Embodiment the most of the present utility model, it will be understood by those skilled in the art that:
In the case of without departing from principle of the present utility model and objective, these embodiments can be carried out multiple change, revise, replace
And modification, scope of the present utility model is limited by claim and equivalent thereof.
Claims (5)
1. a carbon dioxide refrigerating system, it is characterised in that including:
Compressor, has the first cylinder and the second cylinder in described compressor, described compressor is provided with air vent, the first air-breathing
Mouth and the second air entry, described first air entry connects with described first cylinder, described second air entry and described second cylinder
Connection；
Outdoor heat exchanger, described outdoor heat exchanger has the first import and the first outlet, described first import and described air vent
Connection, described first exit is provided with first throttle device；
Indoor heat exchanger, described indoor heat exchanger has the second import and the second outlet, and described second outlet is inhaled with described first
QI KOU connects, and described second import department is provided with the second throttling arrangement；
Recuperative heat exchanger, limits the first heat exchanging chamber and the second heat exchanging chamber in described Recuperative heat exchanger, described first heat exchanging chamber is even
Be connected on described first outlet with described second throttling arrangement between, described second heat exchanging chamber be connected to described first throttle device and
Between described second air entry；
The coolant filled in described carbon dioxide refrigerating system is carbon dioxide, the volume V1 of wherein said first cylinder and institute
State the volume V2 of the second cylinder and meet following relational expression: 0.05≤V2/V1≤0.5.
Carbon dioxide refrigerating system the most according to claim 1, it is characterised in that the volume V1 of described first cylinder and institute
State the volume V2 of the second cylinder and meet following relational expression: 0.1≤V2/V1≤0.4.
Carbon dioxide refrigerating system the most according to claim 2, it is characterised in that the volume V1 of described first cylinder and institute
State the volume V2 of the second cylinder and meet following relational expression: 0.15≤V2/V1≤0.3.
Carbon dioxide refrigerating system the most according to claim 1, it is characterised in that be provided with first at described first air entry
Gas-liquid separator.
Carbon dioxide refrigerating system the most according to claim 4, it is characterised in that be provided with second at described second air entry
Gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620818910.5U CN205860542U (en) | 2016-07-28 | 2016-07-28 | Carbon dioxide refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620818910.5U CN205860542U (en) | 2016-07-28 | 2016-07-28 | Carbon dioxide refrigerating system |
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| Publication Number | Publication Date |
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| CN205860542U true CN205860542U (en) | 2017-01-04 |
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| CN201620818910.5U Active CN205860542U (en) | 2016-07-28 | 2016-07-28 | Carbon dioxide refrigerating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762648A (en) * | 2017-01-24 | 2017-05-31 | 广东美芝制冷设备有限公司 | Compressor, refrigeration system and automobile |
| CN110617645A (en) * | 2019-10-23 | 2019-12-27 | 珠海凌达压缩机有限公司 | Carbon dioxide compressor and refrigerating system thereof |
-
2016
- 2016-07-28 CN CN201620818910.5U patent/CN205860542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762648A (en) * | 2017-01-24 | 2017-05-31 | 广东美芝制冷设备有限公司 | Compressor, refrigeration system and automobile |
| CN110617645A (en) * | 2019-10-23 | 2019-12-27 | 珠海凌达压缩机有限公司 | Carbon dioxide compressor and refrigerating system thereof |
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