WO2005040702A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
- Publication number
- WO2005040702A1 WO2005040702A1 PCT/JP2004/015724 JP2004015724W WO2005040702A1 WO 2005040702 A1 WO2005040702 A1 WO 2005040702A1 JP 2004015724 W JP2004015724 W JP 2004015724W WO 2005040702 A1 WO2005040702 A1 WO 2005040702A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refrigerator
- compressor
- evaporator
- refrigerator according
- box
- Prior art date
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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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
- 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
-
- 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
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/221—Preventing leaks from developing
-
- 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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/141—Removal by evaporation
- F25D2321/1411—Removal by evaporation using compressor heat
Definitions
- the present invention relates to explosion-proof compatibility of a small refrigerator using a flammable refrigerant and simplification of a system configuration.
- FIG. 4 is a schematic view of a refrigerator provided with a conventional refrigeration cycle described in Japanese Patent Application Laid-Open No. 2002-318056.
- the body 2 of the refrigerator 1 has an outer box 3 made of a steel plate that opens forward, an inner box made of a synthetic resin that opens forward, which is built into the outer box 3 with a gap, and a space between the outer box 3 and the inner box. And a foamed polyurethane insulating material filled in.
- a machine room 4 is provided in the lower rear and houses a refrigeration cycle, and the high-temperature refrigerant discharged from the compressor 5 cools the cooling fan 7 while flowing through the condenser unit 6 composed of concentrated pipes. The heat is promoted by the wind.
- the cooled refrigerant flows through the heat-dissipating pipe 8 arranged at the front opening flange of the outer box 3 to prevent dew condensation that may occur due to the difference between the inside temperature and the outside air temperature.
- FIG. 5 is a schematic diagram of a refrigerator provided with another conventional refrigeration cycle described in Japanese Patent Application Laid-Open No. 7-146054.
- the main body 2A of the refrigerator 1A is an outer box 3A made of a steel plate that opens forward, an inner box made of a synthetic resin that opens forward and is incorporated in the outer box 3A with an interval, and a space between the outer box 3A and the inner box. And a foamed polyurethane insulating material filled in.
- a machine room 4A is provided in the lower rear part to accommodate the refrigeration cycle.
- the high-temperature refrigerant discharged from the compressor 5A flows through a heat-dissipating pipe 10A which is partially immersed in the inner bottom of a water storage tray 9A for receiving defrost water.
- the refrigerant exchanges heat with the defrost water stored in the water storage tray 9A, and heat radiation is promoted by the cooling air of the cooling fan 7A.
- the cooled refrigerant flows through the heat-dissipating pipe 8A provided on the front opening flange of the outer box 3A to prevent dew condensation that may occur due to the difference between the inside temperature and the outside air temperature.
- each component is arranged so as to be packed in a limited space where the refrigeration cycle is installed.
- the heat generated by the compressor, condenser, etc. diffuses into the closed machine room space, making it difficult to dissipate heat and increasing the temperature inside the machine room, resulting in reduced work efficiency and leakage of refrigerant.
- the refrigerant may be trapped in the machine room, and the state of high refrigerant concentration may continue for a long time.
- the refrigerator includes a refrigerator box, a refrigeration cycle in which combustible refrigerant circulates, and a water storage tray for receiving and evaporating defrost water.
- the refrigeration cycle includes a condenser configured by a heat-dissipating pipe disposed in a refrigerator box, a compressor, a decompressor, and an evaporator.
- the water storage tray is placed above the compressor, and receives the defrost water of the evaporator power to evaporate.
- the refrigerator is a so-called small refrigerator having a capacity of 200 L or less, leakage of the refrigerant can be prevented, and the refrigeration cycle can be simplified, energy can be saved, and the cost can be reduced.
- FIG. 1 is a schematic diagram of a machine room part of a refrigerator according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic diagram of a refrigerator according to Embodiment 2 of the present invention.
- FIG. 3 is a schematic diagram of a refrigerator according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic view of a conventional refrigerator.
- FIG. 5 is a schematic view of another conventional refrigerator.
- FIG. 1 is a schematic diagram of a refrigerator according to Embodiment 1 of the present invention.
- a machine room 12 is provided at the lower rear portion of the refrigerator box 11 opposite to the front door.
- the power of the compressor 13 is also piped to the dryer 16 and the cabillary tube 17 through a condenser 15 formed by a part of a heat radiating pipe 14 arranged in the refrigerator box 11, and a cooling not shown.
- a refrigeration cycle 19 that returns from the cooler 18 installed in the room to the compressor 13 is configured.
- the flammable refrigerant 20 is circulating in the refrigeration cycle 19.
- a defrosted water storage dish 21 having a projection shape 21a formed rearward is disposed above the compressor 13, and an operation control device 22 is provided beside the compressor 13.
- the condenser 15 of the refrigeration cycle 19 is composed of only the heat radiating pipe 14 provided in the refrigerator box body 11. Conventionally, a part of a heat radiating pipe is immersed in defrost water stored in a water storage dish, and warm air is circulated by a fan to evaporate the defrost water. In the refrigerator according to the first embodiment, the defrosted water in the water storage dish 21 installed on the top of the refrigerator is evaporated by utilizing the heat released from the compressor 13, so that the flammable portion due to an impact or the like where the welding portion of the pipe is small is reduced. Refrigerant 20 leaks
- a radiation radiator is arranged so that a part thereof is immersed in the inner bottom of a condenser unit or a water storage tray for receiving defrost water, which is concentrated in the machine room 12.
- RU In the refrigerator according to the first embodiment, all of the heat radiating pipes 14 are disposed in the refrigerator box body 11! /, So that the refrigeration cycle can be simplified at a low cost, and the machine room in which the refrigeration cycle 19 is installed. Heat generated by heat-generating components such as the compressor 13 But easily diffuses heat. This suppresses a rise in the temperature in the machine room 12, thereby improving work efficiency and reducing power consumption.
- a water storage tray 21 having a protruding shape 21a protruding rearward from a pipe disposed in the machine room 12 is disposed above the compressor 13. Even when the refrigerator box 11 is pressed against a wall during installation, the box body 11 stops against the projection 21a of the water storage tray 21 before the piping in the machine room 12. In other words, the projection shape 21a protects the noise from directly damaging or giving an impact, so that the machine room 12 can be made a space open to the outside. Therefore, even if the flammable refrigerant 20 leaks, it quickly diffuses and its concentration is reduced, and the risk of ignition can be reduced.
- the refrigerator according to the first embodiment is a small refrigerator having a rated power consumption of 80W or less for the electric motor of the compressor, and the compressor generates less heat, so the compressor is cooled. No cooling member such as a fan is required. Also, since there are few heat generating members, the risk of ignition can be reduced even if the flammable refrigerant leaks.
- the refrigerator according to Embodiment 1 is a so-called small refrigerator having a rated internal volume of 200 L or less
- the amount of heat absorbed into the refrigerator is relatively small. Therefore, the heat radiation can be reduced according to the small heat absorption, and the condenser can be constituted only by the heat radiation pipes arranged in the refrigerator box. Therefore, it is possible to reduce the number of welded portions of the pipes of the refrigeration cycle, and it is possible to reduce the risk of ignition by causing the flammable refrigerant to leak.
- the inside of the refrigerator box 11 is vertically divided to form a refrigerator compartment and a freezer compartment, and the refrigerator 18 cools the refrigerator compartment and the freezer compartment.
- the ON-OFF operation of the compressor 13 may be controlled by a temperature detector (not shown) provided in the refrigerator compartment.
- a temperature detector (not shown) provided in the refrigerator compartment.
- FIG. 2 is a schematic diagram of a refrigerator operation control device 22 according to Embodiment 2 of the present invention.
- the operation control device 22 includes a main body 22a for storing components such as a control board, and a lid 22b.
- the body 22a is divided into several compartments for storing and fixing individual parts. It is.
- a double rib wall 25 is formed in a portion of a lid portion 22b which comes into contact with a top portion of an outer peripheral side wall 23a of a section 23 for accommodating a control board microcomputer (control section) 24.
- Components such as the control board microcomputer 24 are housed and fixed in the main body 22a of the operation control device 22, and are sealed with the lid 22b.
- the outer peripheral side wall 23a of the section 23 accommodating the control board microcomputer 24 is fixed so as to be sandwiched by the double rib wall 25 provided on the lid 22b, and the section 23 is hermetically sealed. Even if the flammable refrigerant 20 leaks into the machine room 12 where the operation control device 22 is installed, the section 23 is cut off from the outside air so that the risk of ignition can be reduced.
- the cooling in the refrigerator is controlled by the control board microcomputer 24, only the non-contact parts are arranged in the refrigerator for control.
- conventional mechanical contact thermostat temperature control it is not possible to suppress the occurrence of sparks at the contacts. Therefore, even if the flammable refrigerant 20 leaks from the welded portion of the pipe of the cooler 18, the risk of ignition can be reduced.
- the control board microcomputer 24 realizes a simplified structure and low cost by eliminating the need for expensive explosion-proof parts due to the sealed compartment 23 of the operation control device 22 installed in the machine room 12. be able to.
- FIG. 3 is a schematic diagram of a cooling chamber of a refrigerator according to Embodiment 3 of the present invention.
- one seamless pipe 26 is bent so that the openings at both ends are located on the same side.
- the cooling pipe 26 is inserted from one side into cooling fins 27 punched in one pattern to form the cooler 18.
- a double-tube heater 28 for defrosting is disposed below the cooler 18.
- the double tube heater 28 includes a heating heater winding 28a, a first glass tube 28b covering the heating heater winding 28a, and a second glass tube 28c covering the first glass tube 28b with an air layer interposed therebetween.
- cooling pipe 26 of the cooler 18 is composed of a single seamless pipe, the number of welded portions of the pipe can be reduced. Therefore, the flammable refrigerant 20 is unlikely to leak. The risk of ignition can be reduced.
- the heating heater winding 28a is sealed with a double glass tube sandwiching the air layer, the rise in the surface temperature of the defrost heater 28 can be suppressed even during heat generation. Therefore, even when the flammable refrigerant 20 leaks from the welding portion of the pipe of the cooler 18, the surface of the heater 28 does not reach the ignition temperature, and the danger can be reduced.
- the refrigerator according to Embodiment 3 is a so-called small refrigerator having a rated internal volume of 200 L or less. Since the amount of cooling in the refrigerator is relatively small, the size of the cooler can be reduced in accordance with the amount of cooling, and the amount of refrigerant to be charged can be reduced, thereby improving safety. By reducing the size of the cooler 18, the amount of heat generated by the defrost heater can be suppressed, and the surface temperature of the glass tube 28c can be reduced. Therefore, even if the flammable refrigerant leaks from the cooler, the risk of ignition is reduced and safety is enhanced. Industrial applicability
- the refrigerator embodying the present invention uses a combustible refrigerant, and can achieve energy saving and low cost by using a safe and simple refrigeration cycle.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Removal Of Water From Condensation And Defrosting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-365676 | 2003-10-27 | ||
JP2003365676A JP2005127660A (ja) | 2003-10-27 | 2003-10-27 | 冷蔵庫 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005040702A1 true WO2005040702A1 (ja) | 2005-05-06 |
Family
ID=34510187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/015724 WO2005040702A1 (ja) | 2003-10-27 | 2004-10-22 | 冷蔵庫 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2005127660A (ja) |
CN (1) | CN1871483A (ja) |
WO (1) | WO2005040702A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160305704A1 (en) * | 2013-12-11 | 2016-10-20 | BSH Hausgeräte GmbH | Domestic refrigeration appliance with a specific machinery-chamber boundary wall |
CN107449204A (zh) * | 2016-05-31 | 2017-12-08 | 东芝生活电器株式会社 | 冰箱 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105737505A (zh) * | 2014-12-10 | 2016-07-06 | 博西华电器(江苏)有限公司 | 一种冰箱 |
JP6771969B2 (ja) * | 2016-07-04 | 2020-10-21 | シャープ株式会社 | 冷蔵庫 |
JP2021096019A (ja) * | 2019-12-16 | 2021-06-24 | シャープ株式会社 | 冷蔵庫 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09329386A (ja) * | 1996-06-07 | 1997-12-22 | Hitachi Ltd | 冷蔵庫 |
JPH11211293A (ja) * | 1998-01-26 | 1999-08-06 | Sanyo Electric Co Ltd | 冷蔵庫 |
JP2002107027A (ja) * | 2000-09-29 | 2002-04-10 | Mitsubishi Electric Corp | 冷凍冷蔵庫、冷凍冷蔵庫の運転方法 |
JP2002267353A (ja) * | 2001-03-13 | 2002-09-18 | Matsushita Refrig Co Ltd | 冷蔵庫 |
JP2003004363A (ja) * | 2002-05-09 | 2003-01-08 | Matsushita Refrig Co Ltd | 除霜ヒーター及び冷蔵庫 |
-
2003
- 2003-10-27 JP JP2003365676A patent/JP2005127660A/ja active Pending
-
2004
- 2004-10-22 CN CNA2004800316032A patent/CN1871483A/zh active Pending
- 2004-10-22 WO PCT/JP2004/015724 patent/WO2005040702A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09329386A (ja) * | 1996-06-07 | 1997-12-22 | Hitachi Ltd | 冷蔵庫 |
JPH11211293A (ja) * | 1998-01-26 | 1999-08-06 | Sanyo Electric Co Ltd | 冷蔵庫 |
JP2002107027A (ja) * | 2000-09-29 | 2002-04-10 | Mitsubishi Electric Corp | 冷凍冷蔵庫、冷凍冷蔵庫の運転方法 |
JP2002267353A (ja) * | 2001-03-13 | 2002-09-18 | Matsushita Refrig Co Ltd | 冷蔵庫 |
JP2003004363A (ja) * | 2002-05-09 | 2003-01-08 | Matsushita Refrig Co Ltd | 除霜ヒーター及び冷蔵庫 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160305704A1 (en) * | 2013-12-11 | 2016-10-20 | BSH Hausgeräte GmbH | Domestic refrigeration appliance with a specific machinery-chamber boundary wall |
CN107449204A (zh) * | 2016-05-31 | 2017-12-08 | 东芝生活电器株式会社 | 冰箱 |
Also Published As
Publication number | Publication date |
---|---|
CN1871483A (zh) | 2006-11-29 |
JP2005127660A (ja) | 2005-05-19 |
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