CN2763754Y - Refrigerator - Google Patents
Refrigerator Download PDFInfo
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- CN2763754Y CN2763754Y CN 200520111767 CN200520111767U CN2763754Y CN 2763754 Y CN2763754 Y CN 2763754Y CN 200520111767 CN200520111767 CN 200520111767 CN 200520111767 U CN200520111767 U CN 200520111767U CN 2763754 Y CN2763754 Y CN 2763754Y
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- temperature chamber
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Abstract
The utility model discloses a refrigerator in refrigeration air conditioning industries, which can make use of carbon dioxide as refrigerant. The utility model comprises a liquid pump, an evaporator, a mixing chamber, a liquefier, a throttling device, a cooler and a compressor, wherein the inner part of the liquefier is provided with a low temperature chamber and a high temperature chamber which are mutually separated; a throttle valve is connected between the low temperature chamber and the high temperature chamber; the low temperature chamber is connected with the inlet end of the liquid pump; the outlet end of the liquid pump, the evaporator and the mixing chamber are sequentially connected; the outlet of the mixing chamber is connected with the high temperature chamber and the inlet end of the throttling device and passes through a heat exchange tube of the high temperature chamber to communicate the low temperature chamber and the inlet end of the compressor; the outlet end of the compressor, the cooler and the mixing chamber are sequentially connected. The utility model can make use of carbon dioxide as a refrigeration working medium, which is favorable to environment protection and is particularly suitable for air conditioners, refrigerators, refrigerating cabinets, food display cabinets, etc.
Description
Technical field
The utility model relates to the refrigerating plant in a kind of refrigerating and air conditioning industry, especially a kind of refrigerating plant that is used for air-conditioning, refrigerator, refrigerator-freezer, food showcase etc.
Background technology
At present, in refrigerating and air conditioning industry, mostly still adopting with CFCs (Chlorofluorocarbons class material) is the steam compression type refrigeration technology of working medium, but through scientist's discovery that studies for a long period of time, CFC
SBe the principal element of destroying the earth atmosphere ozone layer, global ecological environment has been produced serious harmful effect.In order to address this problem; international community has formulated a series of pacts; Chinese Government plays an active part in the activity of global protection ozone layer; implemented " China progressively eliminates the action plan of ODS (ODS) " in approval in 1993; in September, 1989, formal proposition added " Vienna Convention on Protection of Ozone Layer "; become a full member of Montreal Protocol on Substances that Deplete the Ozone Layer (being called for short " protocol ") in June, 1991, become the contracting party that acts by " protocol " the 5th first item.For over ten years, under the support of implementing the Montreal protocol Multilateral Fund, Chinese Government's positive tissue is implemented the protection ozone layer, is eliminated the alternative retrofit work of ODS (ODS) project.Regulation according to revision back Montreal Protocol on Substances that Deplete the Ozone Layer stopped CFC on January 1st, 2010 comprehensively
SProduction and consumption.So CFC
SEliminate and the research and development of novel substitute just is even more important, effort surplus ten year, now existing commercial ODS substitute, but because all there is the different problem of degree in various chemical refrigerants, all will be subjected to the restriction of various international environmental protection pacts, but not a kind of desirable environmental protection refrigerant.Carbon dioxide once was applied in the thirties in 19 end of the centurys to 20th century as a kind of natural refrigeration working medium, but in the steam compression type refrigeration technology, and, operating pressure low because of its critical-temperature be high have been limited it and use as cold-producing medium.But in recent years, people progressively deepen the understanding of environmental problem, particularly after the formulation of Montreal protocol and Kyoto Protocol, carbon dioxide is paid attention to by people again as cold-producing medium, countries in the world are all being tried to explore and are being studied carbon dioxide as cold-producing medium at present, are used for the refrigerating plant of air-conditioning, refrigerator, refrigerator-freezer, food showcase etc.
The utility model content
In order to overcome the vapor compression refrigeration device that adopts in the existing refrigerating and air conditioning industry is the deficiency that working medium is brought with CFCs, and technical problem to be solved in the utility model provides a kind of refrigerating plant that utilizes carbon dioxide as cold-producing medium.
The technical scheme that its technical problem that solves the utility model adopts is: refrigerating plant comprises the liquid pump, evaporimeter, mixing chamber, liquefier, throttling arrangement, cooler and compressor, the inside of liquefier is provided with the low temperature chamber and the hot room of mutual partition, be connected with choke valve between low temperature chamber and the hot room, low temperature chamber is connected with the entrance point of liquid pump, liquid delivery side of pump end, evaporimeter, mixing chamber is linked in sequence, the outlet of mixing chamber is connected with the entrance point of hot room and throttling arrangement, the heat exchanger tube that passes hot room is communicated with low temperature chamber the port of export of compressor and cooler with the entrance point of compressor, mixing chamber is linked in sequence.
As to further improvement in the technical proposal, be provided with pooling zone in the liquefier, the outlet of many heat exchanger tubes is communicated with pooling zone, and pooling zone is communicated with the entrance point of compressor.
As to further improvement in the technical proposal, described throttling arrangement is a decompressor.
As to further improvement in the technical proposal, described cooler is an aerial cooler.
The beneficial effects of the utility model are: owing to adopted said structure, thus can utilize carbon dioxide as refrigeration working medium, carbon dioxide is a kind of natural medium, and it consumes ozone latent energy value ODP=0, and there is not the recovery problem in global warming potential GWP=1.Though carbon dioxide is a kind of gas with greenhouse effects; but the carbon dioxide that we use is the byproduct of chemical industry, food service industry; it is not special manufacturing; and the use of carbon dioxide will reduce atmospheric discharging; be to help cold-producing medium environmental protection, cleaning, safety, be particularly useful for air-conditioning, refrigerator, refrigerator-freezer, food showcase etc.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Be labeled as among the figure: liquid pump 1, evaporimeter 2, mixing chamber 3, liquefier 4, throttling arrangement 5, compressor 6, pooling zone 7, low temperature chamber 8, hot room 9, heat exchanger tube 10, choke valve 11, cooler 12.Arrow is the flow of refrigerant direction among the figure.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, refrigerating plant of the present utility model, its parts comprise: liquid pump 1, evaporimeter 2, mixing chamber 3, liquefier 4, throttling arrangement 5, compressor 6, heat exchanger tube 10,, choke valve 11 and cooler 12, wherein liquid pump 1, evaporimeter 2, mixing chamber 3, throttling arrangement 5, compressor 6, heat exchanger tube 10, choke valve 11 and cooler 12 all adopt existing well-known zero parts, cooler 12 can adopt conventional aerial cooler or water-cooled cooler, and the water-cooled cooler generally is to adopt in large-scale refrigerating plant.For air-conditioning, cooler 12 is arranged on outdoor.Liquefier 4 is a closed container, its inside is provided with the low temperature chamber 8 and the hot room 9 of mutual partition, connect by choke valve 11 between low temperature chamber 8 and the hot room 9, low temperature chamber 8 is connected with the entrance point of liquid pump 1, and the port of export of liquid pump 1, evaporimeter 2, mixing chamber 3 are linked in sequence.The outlet of mixing chamber 3 is connected with the entrance point of hot room 9 and throttling arrangement 5, the heat exchanger tube 10 that passes hot room 9 is communicated with the entrance point of low temperature chamber 8 with compressor 6, the port of export of compressor 6 connects the arrival end of cooler 12, and the port of export of cooler 12 is communicated with mixing chamber 3.
Like this, above-mentioned refrigerating plant has just formed refrigeration cycle and liquefaction cycle loop two parts.Refrigeration cycle is: the hot room 9-choke valve 11-liquefier 4-liquid pump 1 of liquid pump 1-evaporimeter 2-mixing chamber 3-liquefier 4, the liquefaction cycle loop is: compressor 6-cooler 12-mixing chamber 3-throttling arrangement 5-liquefier 4-compressor 6.
This device uses carbon dioxide as refrigeration working medium, and the corresponding relation of the temperature of carbon dioxide, pressure, liquid enthalpy and gas enthalpy thereof sees the following form:
| Temperature (℃) | Pressure (Mpa) | Liquid enthalpy (KJ/Kg) | Gas enthalpy (KJ/Kg) |
| -40 | 1.00 | 112.90 | 435.32 |
| 5 | 3.97 | 212.5 | 427.5 |
During operation, liquid pump 1 will be stored in the low-temp low-pressure carbon dioxide liquid in the low temperature chamber 8 of liquefier 4, and pressurization is input in the evaporimeter 2, and this moment, the carbon dioxide state became high-pressure carbon dioxide liquid by low-temp low-pressure liquid.Because liquid has Incoercibility, Volume Changes is very little in the compression process, and the power consumption of liquid pump 1 is less, so by the pressurized liquid CO 2 of liquid pump 1, can ignore its temperature rise, only is corresponding saturation temperature.Carbon dioxide liquid is evaporated in evaporimeter and the absorbing environmental heat, has become the HTHP carbon dioxide that is equal under the environment temperature, enters mixing chamber then, and this moment, environment temperature was reduced, and reached the purpose of refrigeration.
HTHP carbon dioxide by mixing chamber comes out before entering throttling arrangement 5, is divided into two-way, and wherein one road gas directly enters the hot room 9 of liquefier 4; Other one road gas then enters throttling arrangement 5, after the decompressor constant entropy expansion, the carbon dioxide on this road has become the cold airflow of low-temp low-pressure, enter into the low temperature chamber 8 of liquefier 4 then, by the carbon dioxide in the hot room 9 of heat exchanger tube 10 cooling liquid devices 4, this moment in the hot room 9 carbon dioxide be condensed into synthermal liquid after being cooled, and then with condensed liquid through choke valve 11 throttling step-downs, a part becomes the carbon dioxide liquid of low temperature, thereby for kind of refrigeration cycle is prepared stand-by low-temperature carbon dioxide liquid, remaining is vaporizated into saturated gas, with converge by the top of the low temperature chamber 8 in liquefier 4 of the cold airflow behind the throttling arrangement 5, gas after converging enters compressor 6 through heat exchanger tube 10, enter after compressed machine 6 compressions and enter mixing chamber 3 again after cooler 12 cools off, mix with the gas of evaporimeter 2 outlets, mixed gas then enters throttling arrangement 5, carries out next liquefaction cycle.
Generally speaking, the heat exchanger tube 10 that passes hot room 9 is the pipe family of many compositions.Therefore, for the ease of compiling gas, be provided with pooling zone 7 in the liquefier 4, the outlet of many heat exchanger tubes 10 is communicated with pooling zone 7, and pooling zone 7 is communicated with the entrance point of compressor 6.
The main effect of above-mentioned throttling arrangement 5 is can change Compressed Gas interior into other forms of energy and exported or consume, thereby reaches the purpose of producing cold.Throttling arrangement 5 can adopt realizations such as existing decompressor or choke valve.Decompressor is that its action principle comes down to a kind of gas engine with interior a kind of existing mechanical equipment that can change mechanical energy into and be exported of Compressed Gas.But decompressor is to work at low temperatures, mainly is to produce cold.So the decompressor principal contradiction be advance, under the situation that row pressure power and intake air temperature are certain, how to produce cold to greatest extent and the minimum temperature of the end of a period that obtains to expand, just how to make decompressor have maximum adiabatic efficiency, then attach as for the acquisition of mechanical power.The effect of decompressor is identical with the effect of choke valve in fact.But the adiabatic efficiency of decompressor is higher than choke valve, preferably selects for use decompressor as throttling arrangement 5.
The effect of described compressor 6 is with the gas in the pooling zone 7 of the low-temp low-pressure on liquefier 4 tops, is forced into evaporating pressure.
Embodiment: as shown in Figure 1, refrigerating plant of the present utility model comprises refrigeration cycle and liquefaction cycle loop two parts.Refrigeration cycle is: the hot room 9-choke valve 11-liquefier 4-liquid pump 1 of liquid pump 1-evaporimeter 2-mixing chamber 3-liquefier 4, the liquefaction cycle loop is: compressor 6-aerial cooler-mixing chamber 3-decompressor-liquefier 4-compressor 6.Liquefier 4 is a closed container, and its inside is provided with low temperature chamber 8, hot room 9 and the pooling zone 7 of mutual partition, connects by choke valve 11 between low temperature chamber 8 and the hot room 9, and the many heat exchanger tubes 10 that pass hot room 9 are communicated with low temperature chamber 8 and pooling zone 7.Low temperature chamber 8 is connected with the entrance point of liquid pump 1, and the port of export of liquid pump 1, evaporimeter 2, mixing chamber 3 are linked in sequence.The outlet of mixing chamber 3 is connected with the entrance point of hot room 9 and decompressor, and the entrance point of compressor 6 is communicated with pooling zone 7, and the port of export of compressor 6 connects the arrival end of aerial cooler, and the port of export of aerial cooler is communicated with mixing chamber 3.
Liquid CO
2(40 ℃ 1.00Mpa) become highly pressurised liquid CO through 1 pressurization of liquid pump
2(3.97Mpa), absorbing environmental heat and be evaporated to the CO of HTHP in evaporimeter
2Gas (5 ℃ enter mixing chamber 3, liquid CO after 3.97Mpa)
2(40 ℃ 1.00Mpa) are evaporated to CO
2(5 ℃, 3.97Mpa) absorb heat is (427.5-212.5=215) KJ/Kg to gas, makes CO
2Obtain certain interior energy, environment temperature is reduced, and reaches the purpose of refrigeration.
In liquefaction cycle, a part of CO
2Gas expand into the gas of low-temp low-pressure by decompressor, and gas temperature is reduced to-45 ℃ by environment temperature (40 ℃), thereby produces certain refrigerating capacity.This part refrigerating capacity is used for another part is entered from mixing chamber 3 CO of the high-temperature region 9 of liquefier 4
2Gas cooled is condensed into 5 ℃, the high temperature saturated liquid of 3.97Mpa.Since the balance of heat, the CO of the cryogenic gas that decompressor produces in the high-temperature region 9 of heat exchanger tube 10 and liquefier 4
2After gas carries out heat exchange, become 5 ℃, the CO of 1Mpa at pooling zone 7
2Gas.Simultaneously, the saturated CO of the high temperature of high-temperature region 9
2Liquid (5 ℃, 3.97Mpa) is throttled under the pressure of 1Mpa through choke valve 11, and a part becomes-40 ℃, the cryogenic liquid of 1Mpa, and another part then is vaporized into-40 ℃, the saturated gas of 1Mpa, and through entering the CO of the low-temp low-pressure of liquefier 4 behind the decompressor
2Gas in low temperature chamber 8, converge for 1Mpa,＜5 ℃ gas, finally making its gaseous state that enters compressor 6 is 5 ℃, 1Mpa, after compressor 6 compressions, pressure is increased to 3.97Mpa, temperature is cooled to about 40 ℃ through aerial cooler, enter mixing chamber 3 again, come out with evaporimeter 25 ℃, the gas of 3.97Mpa mix, and finish next circulation.
Claims (5)
1, refrigerating plant, it is characterized in that: comprise liquid pump (1), evaporimeter (2), mixing chamber (3), liquefier (4), throttling arrangement (5), cooler (12) and compressor (6), the inside of liquefier (4) is provided with the low temperature chamber (8) and the hot room (9) of mutual partition, be connected with choke valve (11) between low temperature chamber (8) and the hot room (9), low temperature chamber (8) is connected with the entrance point of liquid pump (1), the port of export of liquid pump (1), evaporimeter (2), mixing chamber (3) is linked in sequence, the outlet of mixing chamber (3) is connected with the entrance point of hot room (9) and throttling arrangement (5), the heat exchanger tube (10) that passes hot room (9) is communicated with the entrance point of low temperature chamber (8) with compressor (6), the port of export of compressor (6) and cooler (12), mixing chamber (3) is linked in sequence.
2, refrigerating plant as claimed in claim 1 is characterized in that: be provided with pooling zone (7) in the liquefier (4), the outlet of many heat exchanger tubes (10) is communicated with pooling zone (7), and pooling zone (7) is communicated with the entrance point of compressor (6).
3, refrigerating plant as claimed in claim 1 or 2 is characterized in that: described throttling arrangement (5) is a decompressor.
4, refrigerating plant as claimed in claim 1 or 2 is characterized in that: described throttling arrangement (5) is a choke valve.
5, refrigerating plant as claimed in claim 1 or 2 is characterized in that: described cooler (12) is an aerial cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520111767 CN2763754Y (en) | 2005-05-23 | 2005-07-08 | Refrigerator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520034251 | 2005-05-23 | ||
| CN200520034251.8 | 2005-05-23 | ||
| CN 200520111767 CN2763754Y (en) | 2005-05-23 | 2005-07-08 | Refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2763754Y true CN2763754Y (en) | 2006-03-08 |
Family
ID=36141297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520111767 Expired - Fee Related CN2763754Y (en) | 2005-05-23 | 2005-07-08 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2763754Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061737A (en) * | 2014-07-10 | 2014-09-24 | 安徽红叶节能电器科技有限公司 | Domestic carbon dioxide refrigerator |
| CN107606812A (en) * | 2017-10-31 | 2018-01-19 | 沈志宏 | Composite refrigeration system |
-
2005
- 2005-07-08 CN CN 200520111767 patent/CN2763754Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061737A (en) * | 2014-07-10 | 2014-09-24 | 安徽红叶节能电器科技有限公司 | Domestic carbon dioxide refrigerator |
| CN107606812A (en) * | 2017-10-31 | 2018-01-19 | 沈志宏 | Composite refrigeration system |
| CN107606812B (en) * | 2017-10-31 | 2023-05-02 | 沈志宏 | Composite refrigeration system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |