CN1090743C - Refrigerating unit - Google Patents
Refrigerating unit Download PDFInfo
- Publication number
- CN1090743C CN1090743C CN95121549A CN95121549A CN1090743C CN 1090743 C CN1090743 C CN 1090743C CN 95121549 A CN95121549 A CN 95121549A CN 95121549 A CN95121549 A CN 95121549A CN 1090743 C CN1090743 C CN 1090743C
- Authority
- CN
- China
- Prior art keywords
- cold
- producing medium
- channel
- hydrocarbon
- fluoro
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/022—Evaporators with plate-like or laminated elements
- F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Lubricants (AREA)
Abstract
The refrigeration device has at least one refrigeration space cooled by a plate evaporator connected in a refrigeration circuit.The evaporator has a cryogen channel for transporting cryogen,in which a hydrocarbon-based cryogen is transfused.The cross-section of the cryogen channel tries to fit the volumetric flux of the hydrocarbon-based cryogen,except for the evaporator,the flow cross-section of the cryogen flow path in the circulation channel for transporting a fluor-hydrocarbon based cryogen remains unaltered.
Description
The present invention relates to a kind of refrigeration plant that has a cooling chamber at least, this cooling chamber is connected the evaporator cools that is made of board-like assembly in the closed refrigerating circuit by one, evaporimeter has the coolant channel that is used for refrigerant conveying, and cold-producing medium is circulated in refrigerating circuit by driven compressor.
At present, in the kind of refrigeration cycle of refrigeration plant, having adopted with the hydrocarbon is that to replace with fluoro-chlorocarbon compound (FCKW) or fluoro-hydrocarbon compound (FKW) be damaging the ozone layer of base or the cold-producing medium that causes greenhouse effects for the cold-producing medium (for example iso-butane) of base.Still compare with in existing kind of refrigeration cycle, adding at present, adopt this class cold-producing medium can significantly improve the unit interval and flow through the system stream agent volume flow of the coolant channel of evaporimeter at the low-density cold-producing medium that uses.But also be considerable along the pressure drop that coolant channel produced thus, above-mentioned pressure drop will cause the loss of refrigeration capacity of whole refrigerant system.If use the cold-producing medium of hydrocarbon as base in the very big evaporimeter of refrigerating capacity, its loss of refrigeration capacity is especially obvious.
Task of the present invention provides a kind of evaporimeter that is made of board-like assembly simple in structure, adopting with the hydrocarbon when being the cold-producing medium of base, can prevent by the loss of refrigeration capacity in the caused refrigeration system of evaporimeter.
The technical scheme of finishing task of the present invention is: the refrigerated medium that will be base in known manner with the hydrocarbon injects coolant channel as cold-producing medium, the channel cross-section of above-mentioned coolant channel should be as far as possible is that the volume flow of cold-producing medium of base adapts with adopting with the hydrocarbon, its volume flow ratio be that the volume flow of cold-producing medium of base is big with FKW or FCKW; Except that evaporimeter, the stream that is arranged on the cold-producing medium in the refrigerant loop is that its flow cross of cold-producing medium of base is constant substantially than being used to transmit with FKW or FCKW.
Adopt technical scheme of the present invention, can make the pressure reduction minimum of cold-producing medium between evaporator inlet and outlet that in the coolant channel of evaporimeter, flows, thereby make the evaporating temperature of cold-producing medium about the same on whole evaporating surface, and can significantly improve the refrigeratory capacity of coolant compressor and the energy balance of kind of refrigeration cycle.In addition, adopt the solution of the present invention, with using with FKW or FCKW is that the cold-producing medium of base is compared its passage length and port number can remain unchanged to the full extent, thereby the difficulty of processing channel on whole evaporator plate that can avoid the system of Himdu logic show to change the evaporator plate size and cause, above-mentioned process is to be difficult to control on production technology.Moreover the solution of the present invention can make also that to adopt with FKW or FCKW up to now be condenser in the refrigerant loop of cold-producing medium of base or restriction portion, and can be used for the hydrocarbon be not the cold-producing medium of base yet not transforming aspect the refrigeration.
According to another preferred embodiment of theme of the present invention, transmitting with the hydrocarbon is that the channel cross-section of coolant channel of cold-producing medium of base is that the channel cross-section of coolant channel of the cold-producing medium of base enlarges 25% to 50% approximately than transmitting with FKW or FCKW.
It is especially not only inexpensive but also favourable to the coolant channel that adopts the plate evaporator that so-called pressure welding formula autofrettage (Rollbond-Herstellverfahren) forms to enlarge channel cross-section according to this order of magnitude.
If according to another preferred arrangement of the present invention, making transmission is that the channel cross-section of the coolant channel of base is the channel cross-section expansion 50% of coolant channel of the cold-producing medium of base than transmitting with FKW or FCKW with the hydrocarbon, enlarging under the situation of channel cross-section, can improve cold greatly and processing cost is still very low.
If, make channel cross-section maintain 17mm according to another preferred arrangement of the present invention
2And 18.5mm
2Between, be preferably 18mm
2Then can reduce the pressure loss that cold-producing medium flows very significantly in coolant channel.
If according to other arrangement of the present invention, make channel cross-section have the hydraulics equivalent diameter of about 3mm, the channel width that this hydraulics equivalent diameter draws is 12mm, and channel height is 2.1mm, can make flow of refrigerant unobstructed especially on the one hand, coolant channel processing easily on the other hand.
If another is arranged according to the present invention, the hydrocarbon refrigerant of selection is an iso-butane, and this is for making cold-producing medium for the pressure loss minimum, can obtain the result who makes us very satisfied when flowing in the coolant channel of evaporimeter.
If arrange according to the present invention is another kind of, evaporimeter is fitted together by the evaporator plate that has the coolant channel that forms with so-called pressure welding method more and carries out flat being formed by connecting, then this kind evaporimeter particularly suitable.
According to a kind of alternative arrangement of the present invention, evaporimeter is fitted together by the evaporator plate that has the coolant channel that forms with so-called Z-welding (Z-Bondverfahren) carries out flat being formed by connecting.
Below in conjunction with accompanying drawing embodiments of the invention are briefly explained:
Fig. 1 is equipped with a refrigerating circuit schematic diagram that is lumped together the two temperature evaporimeters that process by plate pack;
Fig. 2 is the top view of two temperature evaporimeters of installing, is processed with coolant channel on the one flat plate therein, and this figure shows with three-dimensional form; And
The profile that Fig. 3 has amplified for the coolant channel size cut open along the III-III line.
Fig. 1 is the rough schematic view of the kind of refrigeration cycle 10 of unshowned three-star domestic refrigerator, and a compressor 11 is housed in the circulation.The high-pressure side of press links to each other with condenser 12, and the flow cross of condenser tubes is applicable to that with fluoro-hydrocarbon or fluoro-chlorocarbon be the cold-producing medium of base.The outlet side of condenser 12 links to each other with a drying 13, and throttle pipe 14 is equipped with in the outlet of drying, and the flow cross of this throttle pipe is applicable to that with fluoro-hydrocarbon or fluoro-chlorocarbon be the cold-producing medium of base.The major part of throttle pipe 14 pipe ranges is contained in the suction line 15 of compressor 11 suction sides, and suction line is connected on the evaporimeter 16 of so-called single tube connection with throttle pipe 14.Evaporimeter is made of plate material, and it has two warm areas, and it is that the cold-producing medium (for example iso-butane) of base flows through coolant channel and forms that above-mentioned two warm areas are ordered about with the hydrocarbon by compressor 11.
As shown in Figure 2, two of evaporimeter 16 different warm areas are to be linked to each other with the rear wall evaporimeter 19 of refrigerating chamber from the refrigeration angle by bridge connection part 18 by the freezer evaporator that curves C shape (Gefrierfachverdampfer) 17 to form.In above-mentioned situation, evaporimeter 16 is welded by the thin aluminum sheet 20 and 21 that two areas equate, forms on thin plate 20 and the corresponding coolant channel in loop by applying certain pressure, and thin plate 21 is not suppressed.In order to suppress thin aluminum sheet 20 to form coolant channel 22, adopting label is that AL 99.5W7 material thickness is that the thin aluminum sheet of 0.75mm is very suitable, and not repressed plate 21 usefulness labels are the effect that the thin aluminum sheet of 0.6mm just can be received for the AL1230 sheet metal thickness.Can get coolant channel 22 with so-called pressure welding legal system for this material that is adopted, it is the cold-producing medium of base that the cross section of passage is particularly useful for transmitting with the hydrocarbon, for example industrial label is the iso-butane of R600a, and the size of the cross section of above-mentioned passage is that the channel cross-section of the cold-producing medium of base improves 50% approximately than using up to now with FKW or FCKW.Therefore, it is higher to adopt iso-butane can make the cold-producing medium that is driven by compressor 11 flow through the volume flow of coolant channel 22 in coolant channel 22, and can not produce the pressure that significantly reduces the efficient of kind of refrigeration cycle 10 therefrom in coolant channel and fall.When channel width " b " is 12mm, channel height ": h " is 3mm and when drawing channel cross-section " A " for 18mm thus for its hydraulics equivalent diameter of 2.1mm, owing to significantly reduced to flow through the pressure drop of the total length of coolant channel 22, its effect is very good, usually, the manufacturing tolerance of channel size can not reduce its actual effect.
Self-evident, the present invention will with the also available so-called Z-welding of plate evaporator 16 its coolant channels 22 make.
Claims (8)
1. refrigeration plant, it has a cooling chamber at least, this cooling chamber is connected the evaporator cools that is made of board-like assembly in the closed refrigerating circuit by one, evaporimeter has the coolant channel that is used for refrigerant conveying, cold-producing medium is circulated in refrigerating circuit by driven compressor, it is characterized in that to be that basic cold-producing medium injects coolant channel as cold-producing medium in known manner with the hydrocarbon, the channel cross-section of above-mentioned coolant channel (A) is that the volume flow of cold-producing medium of base adapts with adopting with the hydrocarbon as far as possible, its volume flow ratio be that the volume flow of cold-producing medium of base is big with fluoro-hydrocarbon compound or fluoro-chlorocarbon compound, except that evaporimeter (16), the refrigerant flow path (12,14) that is arranged in the refrigerant loop (10) is that its flow cross of cold-producing medium of base is constant substantially than being used to transmit with fluoro-hydrocarbon compound or fluoro-chlorocarbon compound.
2. refrigeration plant as claimed in claim 1, it is characterized in that transmitting with the hydrocarbon is that the channel cross-section (A) of coolant channel (22) of the cold-producing medium of base is that the channel cross-section of coolant channel of the cold-producing medium of base enlarges 25% to 50% approximately than transmitting with fluoro-hydrocarbon compound or fluoro-chlorocarbon compound.
3. refrigeration plant as claimed in claim 1 or 2, it is characterized in that transmitting with the hydrocarbon is that the channel cross-section (A) of coolant channel (22) of the cold-producing medium of base is the channel cross-section expansion 50% of coolant channel of the cold-producing medium of base than transmitting with fluoro-hydrocarbon compound or fluoro-chlorocarbon compound.
4. refrigeration plant as claimed in claim 3 is characterized in that above-mentioned channel cross-section (A) maintains 17mm
2And 18.5mm
2Between, be preferably 18mm
2
5. refrigeration plant as claimed in claim 4 is characterized in that above-mentioned channel cross-section (A) has the hydraulics equivalent diameter of about 3mm, and the channel width (b) that this hydraulics equivalent diameter draws is 12mm, and channel height (h) is 2.1mm.
6. refrigeration plant as claimed in claim 5 is characterized in that above-mentioned is that basic cold-producing medium is an iso-butane with the hydrocarbon.
7. refrigeration plant as claimed in claim 6, it is characterized in that evaporimeter (16) is fitted together by the evaporator plate that has the coolant channel (22) that forms with so-called pressure welding method carries out flat being formed by connecting.
8. refrigeration plant as claimed in claim 6, it is characterized in that evaporimeter (16) is fitted together by the evaporator plate that has the coolant channel (22) that forms with so-called Z-welding carries out flat being formed by connecting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4439996.0 | 1994-11-09 | ||
| DE4439996A DE4439996C5 (en) | 1994-11-09 | 1994-11-09 | The refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1132341A CN1132341A (en) | 1996-10-02 |
| CN1090743C true CN1090743C (en) | 2002-09-11 |
Family
ID=6532864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95121549A Expired - Fee Related CN1090743C (en) | 1994-11-09 | 1995-11-09 | Refrigerating unit |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0711963B1 (en) |
| CN (1) | CN1090743C (en) |
| BR (1) | BR9505127A (en) |
| DE (2) | DE4439996C5 (en) |
| ES (1) | ES2145862T3 (en) |
| GR (1) | GR3033298T3 (en) |
| PT (1) | PT711963E (en) |
| SI (1) | SI0711963T1 (en) |
| TR (1) | TR199501397A2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10053420A1 (en) * | 2000-10-27 | 2002-05-08 | Bsh Bosch Siemens Hausgeraete | Evaporator and refrigerator for a zeotropic mixture of refrigerants |
| DE20104425U1 (en) * | 2001-03-14 | 2002-07-25 | Liebherr Werk Lienz Gmbh | Refrigerator and / or freezer |
| WO2003052338A1 (en) * | 2001-12-17 | 2003-06-26 | Showa Denko K.K. | Heat exchanger and process for fabricating same |
| DE102007044392A1 (en) * | 2007-09-18 | 2009-03-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating appliance with an evaporator arrangement and manufacturing method for the evaporator arrangement |
| EP2594647A3 (en) | 2007-09-21 | 2013-07-24 | BASF Plant Science GmbH | Plants with increased yield |
| IT1397587B1 (en) * | 2009-12-21 | 2013-01-16 | Indesit Co Spa | REFRIGERANT APPLIANCE WITH ROLL-BOND EVAPORATOR. |
| DE102010003087A1 (en) * | 2010-03-19 | 2011-09-22 | BSH Bosch und Siemens Hausgeräte GmbH | Chiller and evaporator for it |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07109343B2 (en) * | 1990-06-29 | 1995-11-22 | 昭和アルミニウム株式会社 | Freezer / refrigerator evaporator |
| DE9115640U1 (en) * | 1991-12-17 | 1992-02-13 | Bosch-Siemens Hausgeräte GmbH, 8000 München | Two-temperature single-circuit refrigerator for household use |
| DE4141641A1 (en) * | 1991-12-17 | 1993-06-24 | Bosch Siemens Hausgeraete | SECOND TEMPERATURE REFRIGERATOR |
| DE4338895A1 (en) * | 1993-11-15 | 1995-05-18 | Krupp Vdm Gmbh | Evaporator |
-
1994
- 1994-11-09 DE DE4439996A patent/DE4439996C5/en not_active Expired - Fee Related
-
1995
- 1995-10-06 SI SI9530405T patent/SI0711963T1/en unknown
- 1995-10-06 ES ES95115790T patent/ES2145862T3/en not_active Expired - Lifetime
- 1995-10-06 PT PT95115790T patent/PT711963E/en unknown
- 1995-10-06 DE DE59508129T patent/DE59508129D1/en not_active Revoked
- 1995-10-06 EP EP95115790A patent/EP0711963B1/en not_active Revoked
- 1995-11-08 BR BR9505127A patent/BR9505127A/en not_active IP Right Cessation
- 1995-11-09 CN CN95121549A patent/CN1090743C/en not_active Expired - Fee Related
- 1995-11-09 TR TR95/01397A patent/TR199501397A2/en unknown
-
2000
- 2000-04-21 GR GR20000400980T patent/GR3033298T3/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE4439996C2 (en) | 1999-06-02 |
| DE4439996C5 (en) | 2006-08-10 |
| SI0711963T1 (en) | 2000-08-31 |
| EP0711963B1 (en) | 2000-04-05 |
| DE4439996A1 (en) | 1996-05-15 |
| ES2145862T3 (en) | 2000-07-16 |
| TR199501397A2 (en) | 1996-06-21 |
| DE59508129D1 (en) | 2000-05-11 |
| EP0711963A1 (en) | 1996-05-15 |
| PT711963E (en) | 2000-07-31 |
| GR3033298T3 (en) | 2000-09-29 |
| BR9505127A (en) | 1997-09-09 |
| CN1132341A (en) | 1996-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |