CN110762929B - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
- Publication number
- CN110762929B CN110762929B CN201911068777.0A CN201911068777A CN110762929B CN 110762929 B CN110762929 B CN 110762929B CN 201911068777 A CN201911068777 A CN 201911068777A CN 110762929 B CN110762929 B CN 110762929B
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- CN
- China
- Prior art keywords
- flow path
- flat
- curved portion
- refrigerator
- pipe
- 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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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D23/00—General constructional features
- F25D23/003—General constructional features for cooling refrigerating machinery
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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
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/002—Details for cooling refrigerating machinery
- F25D2323/0021—Details for cooling refrigerating machinery using air guides
Abstract
Provided is a refrigerator capable of suppressing the reduction of heat radiation performance even when a flat tube is used as a pipe for heat radiation. The heat exchanger includes an outer box, and a pipe for heat radiation provided inside the outer box, wherein the pipe is formed of a flat pipe having a flat planar surface, the flat pipe has a straight portion and a curved portion, and the flat surface is a continuous flat surface including the straight portion and the curved portion.
Description
The application is a divisional application of a patent application of the invention, namely a Chinese patent application with the name of 'refrigerator' and the number of 201710029685.6, which is filed on 16.1.2017 by the applicant.
Technical Field
The present embodiment relates to a refrigerator.
Background
Conventionally, there is known a technique of cooling by closely contacting a pipe for heat radiation to the inside of a metal casing and radiating heat from a refrigerant flowing through the pipe. For example, patent document 1 discloses a technique in which a pipe for heat radiation is formed into a flat pipe, and a flat surface of the flat pipe is brought into close contact with a metal outer box to improve heat radiation performance.
Patent document 1: japanese laid-open patent publication (Kokai) No. 2015-52400
However, when the heat radiation pipe is formed as a flat tube, the flat tube collapses at a portion where the pipe is bent, so that the flow path resistance increases and the flow path is easily blocked. Further, if the flow path is blocked, the refrigerant does not flow any more, and therefore, the heat radiation performance is lowered.
Disclosure of Invention
The invention provides a refrigerator capable of restraining reduction of heat radiation performance under the condition of using a flat tube as a heat radiation pipe.
The refrigerator according to the present embodiment includes: an outer box; and a pipe for heat radiation provided inside the outer box, the pipe being formed of a flat pipe having a flat surface, the flat pipe having a straight portion and a curved portion, the flat surface being a continuous flat surface including the straight portion and the curved portion.
Thus, a refrigerator in which the reduction of heat radiation performance can be suppressed even when a flat tube is used as a pipe for heat radiation can be provided.
Drawings
Fig. 1 is a cross-sectional view schematically showing a configuration example of a refrigerator according to the present embodiment.
Fig. 2 is a view schematically showing a structural example of the flat tube.
Fig. 3 is an enlarged cross-sectional view of a part of the flat tube.
Detailed Description
Hereinafter, an embodiment of a refrigerator will be described with reference to the drawings. The refrigerator 10 illustrated in fig. 1 includes a storage chamber 12 for storing foods in an interior of a heat-insulated box 11 constituting an outer casing thereof. The refrigerator 10 is provided with a door, not shown, for opening and closing the storage chamber 12. The storage room 12 is a well-known refrigerating room, freezing room, vegetable room, or the like. The refrigerator 10 is provided with a refrigeration cycle, not shown, for cooling the storage chamber. The refrigeration cycle is configured by connecting a compressor, a condenser, a capillary tube (capillary tube), a cooler, and the like with a refrigerant pipe.
The heat insulating box 11 houses a vacuum heat insulating panel 23 and a foamed urethane 24 as heat insulators between a metal outer box 21 and a synthetic resin inner box 22. Flat tubes 31 are disposed as pipes for heat dissipation in heat insulation box 11 between outer box 21 and vacuum heat insulation panel 23. The flat tubes 31 constitute a part of refrigerant tubes of the refrigeration cycle, and are provided between the condenser and the capillary tubes. The surface of the vacuum insulation panel 23 on the outer box 21 side is a flat surface having no groove for receiving the flat tube 31.
Here, the vacuum insulation panel 23 has a known structure, and includes, for example, a gas barrier portion (gas barrier) formed by heat-sealing two synthetic resin films to each other at an outer peripheral portion thereof in a bag shape, and a core material. A thin film made of aluminum is formed on each of the two thin films, and the two thin films are sealed in an airtight state to prevent air from flowing between the inside and the outside of the air-blocking portion. The core material is formed by molding glass wool into a plate shape, and a space is formed between the glass fibers of the core material. The core material improves the shape-fixing property of the air barrier portion, and the air in the inner space of the air barrier portion is sucked and vacuumed in the state of the core material being accommodated.
As illustrated in fig. 2, the flat tube 31 is curved along a flat surface of a flat surface thereof, and includes straight portions 32 extending in a straight line and curved portions 33 provided between the straight portions 32. In the flat tube 31 having the linear portion 32 and the curved portion 33, the flat surface thereof is a continuous flat surface including the linear portion 32 and the curved portion 33.
The flat tube 31 has a plurality of flow paths 34 through which a refrigerant flows, as illustrated in fig. 3. For the sake of convenience of explanation, only the outermost flow path 34a and the innermost flow path 34b are shown in the drawings. That is, the flat tube 31 may be configured to further include an intermediate flow path between the outermost flow path 34a and the innermost flow path 34b, or may be configured to include only the outermost flow path 34a and the innermost flow path 34 b.
The curved portion 33 is formed by bending a part of the linear portion 32 along the flat surface of the flat tube 31. Thus, the curved portion 33 is a portion formed by stretching the outer portion of the linear portion 32. That is, as illustrated in fig. 3, the thickness Da outside the linear portion 32 is larger than the thickness Db inside the linear portion 32. The cross-sectional area Sa of the flow path 34a outside the linear portion 32 is larger than the cross-sectional area Sb of the flow path 34b inside the linear portion 32. The cross-sectional area of the flow channel is an area of a cross-section of each portion of the flat tube 31 along a direction perpendicular to a direction in which the flow channel 34 extends, that is, a direction in which the refrigerant flows.
Further, if a portion of the straight portion 32 configured as described above is bent to form the curved portion 33, the outer side of the bent portion is stretched, so that the outer wall thickness becomes thin and the cross-sectional area of the outer flow path 34a becomes small. In the curved portion 33 formed in this manner, the cross-sectional area Sc of the flow path 34a outside the curved portion 33 is smaller than the cross-sectional area Sa of the flow path 34a outside the linear portion 32. The cross-sectional area Sd of the flow path 34b inside the curved portion 33 is equal to or larger than the cross-sectional area Sc of the flow path 34a outside the curved portion 33. The thickness Da outside the linear portion 32 is larger than the thickness Dc outside the curved portion 33. The sectional area Sa of the flow path 34a outside the linear portion 32 is larger than the sectional area Sc of the flow path 34a outside the curved portion 33.
According to the refrigerator 10 according to the present embodiment, the heat-dissipating flat tubes 31 curved along the flat surfaces have a plurality of flow paths 34. According to this configuration, even if 1 or several of the flow paths 34 are blocked, the refrigerant can be made to flow through the other flow paths 34, and therefore, the decrease in the heat radiation performance can be suppressed.
According to the refrigerator 10 of the present embodiment, the cross-sectional area Sc of the flow path 34a outside the curved portion 33 is smaller than the cross-sectional area Sa of the flow path 34a outside the linear portion 32. That is, the cross-sectional area Sc of the flow path 34a outside the curved portion 33 formed by stretching the flow path 34a outside the linear portion 32 should be smaller than the cross-sectional area Sa of the linear portion 32. Therefore, by confirming that the magnitude relation between the cross-sectional area Sc of the flow path 34a outside the curved portion 33 and the cross-sectional area Sa of the flow path 34a outside the linear portion 32 is "Sa > Sc", it can be determined that the curved portion 33 is formed by stretching the linear portion 32.
According to the refrigerator 10 of the present embodiment, the thickness Da of the outer side of the linear portion 32 is larger than the thickness Db of the inner side of the linear portion 32. That is, by increasing the thickness Da of the outer portion of the straight portion 32 stretched to form the curved portion 33, the thickness Dc of the outer portion of the formed curved portion 33 can be sufficiently ensured, and the strength of the curved portion 33 can be ensured.
The thickness Dc outside the curved portion 33 formed by stretching the linear portion 32 is smaller than the thickness Da outside the linear portion 32 before stretching. In other words, the thickness Da outside the straight portion 32 is larger than the thickness Dc outside the curved portion 33. That is, the outer portion of the curved portion 33 formed by stretching the outer portion of the linear portion 32 should have a smaller thickness Dc than the thickness Da of the linear portion 32. Therefore, by confirming that the magnitude relation between the thickness Dc of the outer portion of the curved portion 33 and the thickness Da of the outer portion of the linear portion 32 is "Da > Dc", it can be determined that the curved portion 33 is formed by stretching the linear portion 32.
According to the refrigerator 10 of the present embodiment, the sectional area Sa of the outer flow path 34a of the straight portion 32 is made larger than the sectional area Sb of the inner flow path 34b of the straight portion 32, and the outer flow path 34a is made smaller than the inner flow path 34b in the curved portion 33 formed by stretching the straight portion 32, so that the sectional area Sc of the outer flow path 34a and the sectional area Sd of the inner flow path 34b can be made substantially equal.
According to the refrigerator 10 of the present embodiment, the sectional area Sa of the flow path 34a outside the linear portion 32 should be larger than the sectional area Sc of the flow path 34a outside the curved portion 33 formed by stretching the outside portion of the linear portion 32. Therefore, by confirming that the magnitude relation between the cross-sectional area Sa of the flow path 34a outside the straight portion 32 and the cross-sectional area Sc of the flow path 34a outside the curved portion 33 is "Sa > Sc", it can be determined that the curved portion 33 is formed by stretching the straight portion 32.
According to the refrigerator 10 of the present embodiment, the sectional area Sd of the flow path 34b inside the curved portion 33 is equal to or larger than the sectional area Sc of the flow path 34a outside the curved portion 33. That is, as described above, according to the refrigerator 10 of the present embodiment, the sectional area Sc of the outer flow path 34a of the curved portion 33 and the sectional area Sd of the inner flow path 34 can be made substantially equal to each other, but in this case, the outer flow path 34a is formed by being stretched, and therefore tends to be more reduced than the inner flow path 34 b. Therefore, the outer flow path 34a of the curved portion 33 tends to be slightly smaller than the inner flow path 34 b.
According to the refrigerator 10 of the present embodiment, the surface of the vacuum insulation panel 23 on the outer box 21 side is a flat surface having no groove for receiving the flat tube 31. When the vacuum insulation panel 23 is provided with grooves for receiving the flat tubes 31, the heat insulation performance of the vacuum insulation panel 23 is lowered as the grooves are formed. However, according to the present embodiment, since the flat tubes 31 can be arranged so as to be sandwiched between the outer box 21 and the vacuum insulation panel 23 without forming grooves in the vacuum insulation panel 23, the insulation performance of the vacuum insulation panel 23 is not lowered.
According to the refrigerator of the present embodiment, the refrigerator includes an outer box and flat tubes each having a plurality of flow paths in a heat dissipation pipe provided inside the outer box. The flat tube is bent along a flat surface to form the heat radiation pipe. According to this configuration, even when a flat tube is used as the heat radiation pipe, since there is a very low possibility that all of the plurality of pipes are blocked at the bent portion, the refrigerant can be flowed through at least one of the flow paths, and the decrease in the heat radiation performance can be suppressed.
The present embodiment is not limited to the above-described embodiments, and may be expanded or modified as follows, for example. For example, the number and cross-sectional shape of the flow channels formed as flat tubes may be changed as appropriate.
While the embodiment of the present invention has been described above, the embodiment is presented as an example and is not intended to limit the scope of the invention. The new embodiment can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. The present embodiment and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.
Description of the reference symbols
10, a refrigerator; 21 an outer box; 23 vacuum insulation panels (insulation panels); 31 flat tubes; a 32 straight line portion; 33 curved portions.
Claims (1)
1. A refrigerator has:
an outer box; and
a heat radiation pipe arranged inside the outer box,
the piping is formed of flat tubes having flat surfaces,
the flat tube has a straight portion and a curved portion, the wall thickness of the outer portion of the straight portion is larger than the wall thickness of the inner portion of the curved portion,
the curved portion is formed by stretching and bending an outer portion of the straight portion of the flat tube along the flat surface,
the flat surface is a continuous flat surface including the linear portion and the curved portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-043354 | 2016-03-07 | ||
| JP2016043354A JP6734669B2 (en) | 2016-03-07 | 2016-03-07 | refrigerator |
| CN201710029685.6A CN107166854B (en) | 2016-03-07 | 2017-01-16 | Refrigerator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710029685.6A Division CN107166854B (en) | 2016-03-07 | 2017-01-16 | Refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110762929A CN110762929A (en) | 2020-02-07 |
| CN110762929B true CN110762929B (en) | 2022-04-19 |
Family
ID=59848725
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911068777.0A Active CN110762929B (en) | 2016-03-07 | 2017-01-16 | Refrigerator with a door |
| CN201710029685.6A Active CN107166854B (en) | 2016-03-07 | 2017-01-16 | Refrigerator |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710029685.6A Active CN107166854B (en) | 2016-03-07 | 2017-01-16 | Refrigerator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6734669B2 (en) |
| CN (2) | CN110762929B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005009825A (en) * | 2003-06-20 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN101769656A (en) * | 2009-02-05 | 2010-07-07 | 浙江康盛股份有限公司 | Coiled parallel flow condenser for refrigerator |
| CN101782300A (en) * | 2009-01-21 | 2010-07-21 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger |
| CN102052807A (en) * | 2011-01-26 | 2011-05-11 | 西安交通大学 | Condenser |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06194030A (en) * | 1992-12-25 | 1994-07-15 | Matsushita Refrig Co Ltd | Thermal insulating box |
| JP2006132850A (en) * | 2004-11-05 | 2006-05-25 | Usui Kokusai Sangyo Kaisha Ltd | Cooling unit and its manufacturing method |
| JP2012083068A (en) * | 2010-10-14 | 2012-04-26 | Mitsubishi Electric Corp | Refrigerator |
| CN104359255A (en) * | 2014-11-19 | 2015-02-18 | 合肥华凌股份有限公司 | Condenser and refrigerator |
| CN104864635A (en) * | 2015-06-16 | 2015-08-26 | 江苏启江实业有限公司 | Flat tube fin penetrating type micro-channel evaporator for direct-cooling refrigerator |
-
2016
- 2016-03-07 JP JP2016043354A patent/JP6734669B2/en active Active
-
2017
- 2017-01-16 CN CN201911068777.0A patent/CN110762929B/en active Active
- 2017-01-16 CN CN201710029685.6A patent/CN107166854B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005009825A (en) * | 2003-06-20 | 2005-01-13 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN101782300A (en) * | 2009-01-21 | 2010-07-21 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger |
| CN101769656A (en) * | 2009-02-05 | 2010-07-07 | 浙江康盛股份有限公司 | Coiled parallel flow condenser for refrigerator |
| CN102052807A (en) * | 2011-01-26 | 2011-05-11 | 西安交通大学 | Condenser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107166854B (en) | 2019-12-03 |
| CN110762929A (en) | 2020-02-07 |
| CN107166854A (en) | 2017-09-15 |
| JP2017161100A (en) | 2017-09-14 |
| JP6734669B2 (en) | 2020-08-05 |
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