CN115247918A - Method for determining refrigerant charge amount of refrigerator - Google Patents
Method for determining refrigerant charge amount of refrigerator Download PDFInfo
- Publication number
- CN115247918A CN115247918A CN202210784440.5A CN202210784440A CN115247918A CN 115247918 A CN115247918 A CN 115247918A CN 202210784440 A CN202210784440 A CN 202210784440A CN 115247918 A CN115247918 A CN 115247918A
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- China
- Prior art keywords
- refrigerant
- volume
- refrigerating
- evaporator
- condenser
- 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.)
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Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001035 drying Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000008014 freezing Effects 0.000 abstract description 16
- 238000007710 freezing Methods 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
Images
Classifications
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- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
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- 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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/007—Details for charging or discharging refrigerants; Service stations therefor characterised by the weighing of refrigerant or oil
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to a method for determining the refrigerant charge of a refrigerator, wherein the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber are formed in the box body, and a refrigerating system for refrigerating the refrigerating chamber and the freezing chamber is arranged in the box body, and the method is characterized in that: the refrigerant filled in the refrigerating system is mixed refrigerant, the mixed refrigerant comprises a first refrigerant and a second refrigerant, and the value range of the mass ratio of the first refrigerant to the second refrigerant is as follows: the ratio of the refrigerating volume to the freezing volume minus 15% to the ratio of the refrigerating volume to the freezing volume plus 15%. Compared with the prior art, the invention has the advantages that: the refrigerant filled in the refrigerating system is mixed refrigerant, and the mass of the two refrigerants is set to be the ratio of the refrigerating volume to the freezing volume plus or minus 15%, so that the refrigerating system can achieve a good refrigerating effect, and balance of energy consumption and noise can be achieved.
Description
Technical Field
The present invention relates to a method for determining a refrigerant charge amount of a refrigerator.
Background
A single refrigerant is now commonly used in refrigerators. With the subdivision of the temperature zone and the continuous expansion of the temperature adjusting range, the concept of low-temperature quick freezing and low-temperature storage is increasingly required. In order to realize the function of low-temperature freezing, the prior art realizes low-temperature freezing by changing a refrigerant to enable a compartment to reach a lower evaporation temperature, and the lower evaporation temperature can cause the reduction of the refrigerating efficiency of a refrigerating chamber or a freezing chamber according to a Carnot cycle efficiency calculation formula.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for determining the refrigerant charge of a refrigerator with high refrigeration efficiency aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for determining the refrigerant filling amount of a refrigerator comprises a refrigerator body, wherein a refrigerating chamber and a freezing chamber are formed in the refrigerator body, and a refrigerating system for refrigerating the refrigerating chamber and the freezing chamber is arranged in the refrigerator body, and is characterized in that: the refrigerant that refrigerating system filled fills is mixed refrigerant, mixed refrigerant includes first refrigerant and second refrigerant, and the value range of the mass ratio of first refrigerant and second refrigerant is: the ratio of the refrigerated volume to the frozen volume minus 15% to the ratio of the refrigerated volume to the frozen volume plus 15%.
As an improvement, the refrigeration system comprises a compressor, a condenser, an evaporator, a drying filter and an air return pipe, wherein the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the drying filter, the output end of the drying filter is connected with the input end of the evaporator, the output end of the evaporator is connected with the input end of the air return pipe, and the output end of the air return pipe is connected with the input end of the compressor;
the total mass m of the mixed refrigerant is obtained by the following formula:
m＝ρ el ×0.3×V e +ρ eg ×0.7×V e +ρ cl ×0.15×V c +ρ cg ×0.85×V c +ρ rg ×V r +ρ comp ×V comp ；
where ρ is el Is the density of the liquid in the evaporator, p eg Is the gas density in the evaporator; v e Is the evaporator volume;
ρ cl is the liquid density in the condenser, p cg Is the gas density in the condenser; v c Is the condenser volume;
V r volume of muffler, ρ rg Is the density of the gas in the return air pipe;
V comp is compressor volume, ρ comp Is the gas density in the compressor.
Preferably, the mass ratio of the first refrigerant to the second refrigerant is equal to the mass ratio of the first refrigerant to the second refrigerant.
Preferably, the first refrigerant is R600a refrigerant, and the second refrigerant is R290 refrigerant.
Compared with the prior art, the invention has the advantages that: the refrigerant filled in the refrigerating system is mixed refrigerant, and the mass of the two refrigerants is set to be between the refrigerating volume and the freezing volume ratio plus or minus 15%, so that the refrigerating system can achieve a good refrigerating effect, and balance of energy consumption and noise can be achieved.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a refrigeration system according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The embodiment provides a method for determining the refrigerant charge amount of a refrigerator, wherein the refrigerator comprises a box body 1, a refrigerating chamber 11 and a freezing chamber 12 are formed in the box body, as shown in fig. 1, a refrigerating system for refrigerating the refrigerating chamber 11 and the freezing chamber 12 is arranged in the box body, the refrigerating system is arranged on the rear side of the freezing chamber 12, the refrigerating system comprises a compressor 2, a condenser 3, an evaporator 4, a dry filter 5 and an air return pipe 6, as shown in fig. 2, wherein the output end of the compressor 2 is connected with the input end of the condenser 3, the output end of the condenser 3 is connected with the input end of the dry filter 5, the output end of the dry filter 5 is connected with the input end of the evaporator 4, the output end of the evaporator 4 is connected with the input end of the air return pipe 6, and the output end of the air return pipe 6 is connected with the input end of the compressor 2;
the refrigerant filled in the refrigerating system is mixed refrigerant, the mixed refrigerant comprises a first refrigerant and a second refrigerant, the first refrigerant is R600a refrigerant, the second refrigerant is R290 refrigerant, and the value range of the mass ratio of the first refrigerant to the second refrigerant is as follows: the ratio of the refrigerated volume to the frozen volume minus 15% to the ratio of the refrigerated volume to the frozen volume plus 15%.
The total mass m of the mixed refrigerant is obtained by the following formula:
m＝ρ el ×0.3×V e +ρ eg ×0.7×V e +ρ cl ×0.15×V c +ρ cg ×0.85×V c +ρ rg ×V r +ρ comp ×V comp ；
where ρ is el Is the density of the liquid in the evaporator, p eh Is the gas density in the evaporator; v e Is the evaporator volume;
ρ cl is the density of the liquid in the condenser, p cg Is the gas density in the condenser; v c Is the condenser volume;
V r is the volume of the muffler, ρ rg Is the density of the gas in the return air pipe;
V comp is the compressor capacity, p comp Is the gas density in the compressor.
If the refrigerator is a 300L refrigerating chamber refrigerator and a 200L freezing chamber refrigerator, the mass ratio of the first refrigerant to the second refrigerant is preferably 3:2.
Claims (4)
1. the utility model provides a refrigerant charge volume confirms method of refrigerator, wherein the refrigerator includes the box, is formed with walk-in and freezer in the box, is equipped with in the box for the refrigerated refrigerating system of walk-in and freezer, its characterized in that: the refrigerant filled in the refrigerating system is mixed refrigerant, the mixed refrigerant comprises a first refrigerant and a second refrigerant, and the value range of the mass ratio of the first refrigerant to the second refrigerant is as follows: the ratio of the refrigerated volume to the frozen volume minus 15% to the ratio of the refrigerated volume to the frozen volume plus 15%.
2. The refrigerant charge amount determining method of a refrigerator according to claim 1, wherein: the refrigerating system comprises a compressor, a condenser, an evaporator, a drying filter and an air return pipe, wherein the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the drying filter, the output end of the drying filter is connected with the input end of the evaporator, the output end of the evaporator is connected with the input end of the air return pipe, and the output end of the air return pipe is connected with the input end of the compressor;
the total mass m of the mixed refrigerant is obtained by the following formula:
m＝ρ el ×0.3×V e +ρ eg ×0.7×V e +ρ cl ×0.15×V c +ρ cg ×0.85×V c +ρ rg ×V r +ρ comp ×V comp ；
where ρ is el Is the density of the liquid in the evaporator, p eg Is the gas density in the evaporator; v e Is the evaporator volume;
ρ cl is the density of the liquid in the condenser, p cg Is the gas density in the condenser; v c Is the condenser volume;
V r is the volume of the muffler, ρ rg Is the density of the gas in the return pipe;
V comp is the compressor capacity, p comp Is the gas density in the compressor.
3. The refrigerant charge amount determining method of a refrigerator according to claim 1 or 2, characterized in that: the mass ratio of the first refrigerant to the second refrigerant is equal to the mass ratio of the first refrigerant to the second refrigerant.
4. The refrigerant charge amount determining method of a refrigerator according to claim 1, wherein: the first refrigerant is R600a refrigerant, and the second refrigerant is R290 refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210784440.5A CN115247918A (en) | 2022-06-29 | 2022-06-29 | Method for determining refrigerant charge amount of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210784440.5A CN115247918A (en) | 2022-06-29 | 2022-06-29 | Method for determining refrigerant charge amount of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115247918A true CN115247918A (en) | 2022-10-28 |
Family
ID=83699304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210784440.5A Pending CN115247918A (en) | 2022-06-29 | 2022-06-29 | Method for determining refrigerant charge amount of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115247918A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090126375A1 (en) * | 2005-10-25 | 2009-05-21 | Masaki Toyoshima | Air conditioner, refrigerant filling method of air conditioner, method for judging refrigerant filling state of air conditioner as well as refrigerant filling and pipe cleaning method of air conditioner |
| CN102378884A (en) * | 2009-03-30 | 2012-03-14 | 三菱电机株式会社 | Refrigeration cycle device |
| US20130111933A1 (en) * | 2011-11-08 | 2013-05-09 | Korea University Research And Business Foundation | Refrigerator using non-azeotropic refrigerant mixture and control method thereof |
| KR20150054583A (en) * | 2013-11-12 | 2015-05-20 | 최창균 | Hydro carbon refrigerant blend and appratus for calculating mass ratio of the same |
| CN105402979A (en) * | 2015-12-12 | 2016-03-16 | 西安交通大学 | Novel refrigerator refrigerating system achieving non-azeotropic mixed refrigerant segregation circulation |
| CN111156756A (en) * | 2020-01-19 | 2020-05-15 | 西安交通大学 | Self-adaptive charging amount adjusting system and control method in cooling process of ultralow temperature refrigerator |
| CN113324362A (en) * | 2020-02-12 | 2021-08-31 | 合肥华凌股份有限公司 | Refrigeration equipment and method for determining refrigerant charge |
-
2022
- 2022-06-29 CN CN202210784440.5A patent/CN115247918A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090126375A1 (en) * | 2005-10-25 | 2009-05-21 | Masaki Toyoshima | Air conditioner, refrigerant filling method of air conditioner, method for judging refrigerant filling state of air conditioner as well as refrigerant filling and pipe cleaning method of air conditioner |
| CN102378884A (en) * | 2009-03-30 | 2012-03-14 | 三菱电机株式会社 | Refrigeration cycle device |
| US20130111933A1 (en) * | 2011-11-08 | 2013-05-09 | Korea University Research And Business Foundation | Refrigerator using non-azeotropic refrigerant mixture and control method thereof |
| KR20150054583A (en) * | 2013-11-12 | 2015-05-20 | 최창균 | Hydro carbon refrigerant blend and appratus for calculating mass ratio of the same |
| CN105402979A (en) * | 2015-12-12 | 2016-03-16 | 西安交通大学 | Novel refrigerator refrigerating system achieving non-azeotropic mixed refrigerant segregation circulation |
| CN111156756A (en) * | 2020-01-19 | 2020-05-15 | 西安交通大学 | Self-adaptive charging amount adjusting system and control method in cooling process of ultralow temperature refrigerator |
| CN113324362A (en) * | 2020-02-12 | 2021-08-31 | 合肥华凌股份有限公司 | Refrigeration equipment and method for determining refrigerant charge |
Non-Patent Citations (1)
| Title |
|---|
| 中央电化教育馆: "《家电维修1999上》", 31 January 2000, 家电维修杂志社, pages: 25 * |
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