EP3353478A1 - Kältegerät mit einem kältemittelrohr - Google Patents
Kältegerät mit einem kältemittelrohrInfo
- Publication number
- EP3353478A1 EP3353478A1 EP16760102.0A EP16760102A EP3353478A1 EP 3353478 A1 EP3353478 A1 EP 3353478A1 EP 16760102 A EP16760102 A EP 16760102A EP 3353478 A1 EP3353478 A1 EP 3353478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- section
- flow cross
- constriction
- line
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
Definitions
- the present invention relates to a refrigeration device with a refrigeration cycle with a high-pressure region comprising a compressor, a condenser for liquefying the refrigerant and a refrigerant pipe connecting them.
- Compressors of a refrigerator compress gaseous refrigerant cyclically and thereby cause a pressure pulsation in the high pressure region of the refrigeration cycle. This pressure pulsation can be perceived as a disturbing noise.
- WO 2008/030060 describes a refrigeration cycle with a high-pressure region comprising a compressor for compressing a refrigerant, a condenser for liquefying the refrigerant, and a refrigerant pipe between compressor and condenser for transporting the refrigerant.
- the refrigerant pipe between the compressor and condenser has fluidically parallel pipe sections in which propagate sound waves, which meet at the pipe junctions and extinguish and thus reduce noise.
- Silencers in the refrigerant pipe between compressor and condenser are known for example from CN 203501571, EP 2 060 861, for motor vehicle air conditioning systems from US 5,183,974.
- an inlet pipe for introducing the refrigerant into an evaporator has a pipe region with a first flow cross-section and a constriction region with a second flow cross-section that is smaller than the first flow cross-section.
- US 5,521,340 provides a sound attenuating pipe section with extensions or constrictions in a hydraulic system, US 5,435,699 in an automotive air conditioning system.
- An inventive refrigeration device has a refrigeration cycle with a high-pressure region comprising a compressor for compressing a refrigerant with a refrigerant transfer point, a condenser for liquefying the refrigerant and a refrigerant line between the refrigerant transfer point and the condenser for transporting the refrigerant, wherein the refrigerant line a compressor port and a refrigerant pipe.
- the refrigerant transfer point transfers the refrigerant from the condenser to the refrigerant line.
- the refrigerant line has a line region with a first flow cross-section and a constriction region with a second flow cross-section that is smaller than the first flow cross-section.
- a refrigeration device is understood in particular to mean a domestic refrigeration appliance, that is to say a refrigeration appliance which is used for housekeeping in households or in the gastronomy sector, and in particular for storing food and / or drinks at specific temperatures, such as, for example, a refrigerator, a freezer, a refrigerator Fridge freezer, a freezer or a wine fridge.
- the constriction area is formed by at least one concave Einwolbung a pipe wall of the refrigerant pipe.
- a chamber is formed in the refrigerant line through the constriction area.
- the chamber forms a buffer space for the inflowing refrigerant and the noise is further reduced.
- the refrigerant line comprises a plurality of constriction areas.
- the technical advantage is achieved that the noise can be further reduced.
- at least two constriction regions (109) have different second flow cross sections. As a result, for example, the technical advantage is achieved that the noise can be reduced in different frequency ranges.
- a line region is arranged between two constriction regions, which has a constant, first flow cross section over a predetermined length.
- line regions having different predetermined lengths are arranged between a plurality of constriction regions.
- the constriction region has a circular, rectangular or star-shaped cross section.
- the constriction area is arranged close to the compressor.
- constriction area is arranged at a distance of less than 250 mm from a compressor.
- at least one line region is arranged with a constriction in the compressor outlet. This will For example, the technical advantage achieved that the noise reduction takes place near the refrigerant transfer point.
- the noise reduction thus begins immediately behind the actual compressor, namely behind a non-return valve following the outlet of a compression cylinder. In the flow direction behind this valve begins the pressure pulsation exposed refrigerant pipe consisting of compressor port and refrigerant pipe.
- At least one line region is arranged with a constriction in the refrigerant tube.
- the ratio between the first flow cross section and the second flow cross section is greater than 3: 1.
- Fig. 1 is a schematic view of a refrigerator
- FIG. 2 is a schematic view of a compressor having a refrigerant pipe in a first embodiment
- FIG. 3 shows a schematic view of the refrigerant pipe in a further embodiment
- FIG. 4 shows a schematic view of a compressor with a refrigerant pipe in a further embodiment
- Fig. 5 diagrams of the noise of the evaporator with and without constriction.
- Fig. 1 shows a refrigerator representative of a refrigerator 100 with an upper refrigerator cabinet door and a lower refrigerator door.
- the refrigerator is used, for example, for cooling food and comprises a refrigerant circuit with a high-pressure region comprising a compressor for compressing a refrigerant, a condenser for liquefying the refrigerant and a refrigerant pipe between the compressor and condenser for transporting the refrigerant.
- the compressor draws refrigerant vapor from an evaporator, compresses the refrigerant, and ejects it at a higher pressure to the condenser out.
- the actual compressor according to this invention terminates behind a non-return valve following the outlet of a compression cylinder.
- the compressor as a unit receives a connection piece.
- the connecting piece is part of the refrigerant line which is subjected to pressure pulsation.
- This pressure pulsation in the refrigerant line produces noise effectively reduced by this invention.
- the possibility of noise reduction according to the invention thus begins immediately behind the actual compressor, namely behind a check valve following the outlet of a compression cylinder. From this valve, the actual refrigerant line, which is exposed to the pressure pulsation, begins, consisting of the compressor connection pipe and the refrigerant pipe.
- FIG. 2 shows a schematic view of a compressor 103 with a compressor connecting piece 105 and a refrigerant pipe 106.
- the compressor connecting piece 105 and the refrigerant pipe 106 are components of a refrigerant line 107 and are connected by means of a soldering point 108.
- the refrigerant pipe 106 is passed through an evaporation tray 110, in which condensate accumulating in the refrigeration appliance 100 is collected and evaporated.
- the refrigerant tube 106 is modified according to the invention, but the compressor connection piece 105 is not.
- the refrigerant tube 106 and thus the refrigerant line 107 has a line region 1 1 1 with a first flow cross-section and a constriction region 1 12 with a second flow cross-section which is smaller than the first flow cross-section on.
- the refrigerant pipe 106 has, following the constriction region 1 12, two further line regions 1 13, 1 15 with a first flow cross-section and two further constriction regions 1 14, 1 16 with a second flow cross-section which is smaller than the first flow cross-section.
- the constriction areas 1 12, 1 14, 1 16 may have different second flow cross-sections.
- the constricting portions 1 12, 1 14, 1 16 are arranged at a distance of less than 250 mm after the compressor 103.
- the line regions 1 1 1, 1 13, 1 15 have different lengths, while their flow cross-section is equal to that of the refrigerant pipe.
- FIG. 3 shows a schematic view of a refrigerant line 120 in a further embodiment.
- a refrigerant pipe 122 is soldered to the solder pad 123.
- the refrigerant pipe 122 has a pipe portion in a straight portion of the refrigerant pipe 120 from the solder joint 123 in a triple repetition
- the line regions 125 have the same length and the same first flow cross section.
- the constriction areas 126 have the same second flow cross sections. Chambers 127, 138, 129 are formed in refrigerant line 120 through restriction areas 126.
- the constricted portions 126 are formed by concave concavities 131 of a pipe wall of the refrigerant pipe 122.
- the constricted regions 126 may have a circular, oval, rectangular or star-shaped cross section.
- the ratio between the first flow cross-section and the second flow cross-section is greater than 3: 1 in each case for all line regions 125 with respect to the directly following constriction regions 126.
- the principle of noise reduction of the intake noise consists in a reduction of the flow cross-section in the refrigerant line 120 in the transition from one line region to the following constriction region and a subsequent increase in the flow cross-section in the transition from the constriction region to the following line region.
- FIG. 4 shows a schematic view of a compressor 132 with a refrigerant tube 134 in a further embodiment in which a line region 136 with a first flow cross section and a constriction region 137 with a second flow cross section are arranged in the compressor outlet nozzle 135.
- Refrigerant tube 134 and compressor outlet port 135 are both parts of a refrigerant line 133.
- the narrowing region 137 is followed by a line region 138 having a first flow cross-section and a constriction region 139 having a second flow cross-section, with the soldering point 140 between the compressor outlet stub 135 and the coolant tube 134 lying in the line region 138.
- the narrowing region 139 is followed by two further line regions 142, 144, each having a first flow cross-section and associated constriction regions 143, 145, each having a second flow cross-section.
- FIG. 5 shows diagrams 150, 160 of the noise development of the refrigeration cycle with and without a constriction area in the refrigerant line.
- the volume 152, 162 against the frequency 154,164 are plotted as bar graphs.
- the 400 Hz mark 155, 165 is also drawn.
- the comparison of the diagrams illustrates as a success of the invention a noise reduction in many areas of the frequency spectrum. All features explained and shown in connection with individual embodiments of the invention may be provided in different combinations in the article according to the invention, in order to simultaneously realize their advantageous effects.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressor (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015218450.1A DE102015218450A1 (de) | 2015-09-25 | 2015-09-25 | Kältegerät mit einem Kältemittelrohr |
| PCT/EP2016/070856 WO2017050551A1 (de) | 2015-09-25 | 2016-09-05 | Kältegerät mit einem kältemittelrohr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3353478A1 true EP3353478A1 (de) | 2018-08-01 |
| EP3353478B1 EP3353478B1 (de) | 2025-02-19 |
Family
ID=56853654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16760102.0A Active EP3353478B1 (de) | 2015-09-25 | 2016-09-05 | Kältegerät mit einem kältemittelrohr |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3353478B1 (de) |
| CN (1) | CN108027183A (de) |
| DE (1) | DE102015218450A1 (de) |
| PL (1) | PL3353478T3 (de) |
| WO (1) | WO2017050551A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020207407A1 (de) * | 2020-06-16 | 2021-12-16 | BSH Hausgeräte GmbH | Kältegerät und Verdichter dafür |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5183974A (en) | 1992-04-03 | 1993-02-02 | General Motors Corporation | Gas pulsation attenuator for automotive air conditioning compressor |
| US5521340A (en) | 1994-04-05 | 1996-05-28 | Ford Motor Company | Tuned tube muffler for an automotive vehicle |
| US5435699A (en) | 1994-04-05 | 1995-07-25 | Ford Motor Company | Accumulator for air conditioning system |
| JPH11325655A (ja) * | 1998-05-14 | 1999-11-26 | Matsushita Seiko Co Ltd | 消音器および空気調和機 |
| JP4940832B2 (ja) | 2006-08-30 | 2012-05-30 | ダイキン工業株式会社 | 冷凍装置 |
| KR100887872B1 (ko) | 2006-09-07 | 2009-03-06 | 엘에스엠트론 주식회사 | 역 위상파를 이용한 소음 저감형 냉동기 |
| DE102013206203A1 (de) | 2013-04-09 | 2014-10-09 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit einem Verdampfer |
| CN203501571U (zh) | 2013-07-01 | 2014-03-26 | 福州富雪岛制冷设备有限公司 | 带缓冲器的制冷系统 |
-
2015
- 2015-09-25 DE DE102015218450.1A patent/DE102015218450A1/de not_active Withdrawn
-
2016
- 2016-09-05 CN CN201680055616.6A patent/CN108027183A/zh active Pending
- 2016-09-05 EP EP16760102.0A patent/EP3353478B1/de active Active
- 2016-09-05 PL PL16760102.0T patent/PL3353478T3/pl unknown
- 2016-09-05 WO PCT/EP2016/070856 patent/WO2017050551A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015218450A1 (de) | 2017-03-30 |
| EP3353478B1 (de) | 2025-02-19 |
| PL3353478T3 (pl) | 2025-06-23 |
| CN108027183A (zh) | 2018-05-11 |
| WO2017050551A1 (de) | 2017-03-30 |
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