KR101438155B1 - Ultra low temperature freezer - Google Patents
Ultra low temperature freezer Download PDFInfo
- Publication number
- KR101438155B1 KR101438155B1 KR1020140060685A KR20140060685A KR101438155B1 KR 101438155 B1 KR101438155 B1 KR 101438155B1 KR 1020140060685 A KR1020140060685 A KR 1020140060685A KR 20140060685 A KR20140060685 A KR 20140060685A KR 101438155 B1 KR101438155 B1 KR 101438155B1
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- KR
- South Korea
- Prior art keywords
- refrigerant
- volume
- tube
- pipe
- evaporator
- Prior art date
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
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- 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)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
The present invention relates to an ultra-low temperature freezer, and more particularly, to a refrigerator having a conventional structure by controlling the volume of a double tube without using a separate refrigerant such as a cryogenic refrigerant, To a refrigerator as far as possible.
The refrigerator has a compressor, a condenser, an inflator and an evaporator, and is configured to cool the freezer using a cooling cycle of compression-condensation-expansion-evaporation.
The cooling cycle includes a compression cycle in which gaseous refrigerant is compressed to a high temperature and a high pressure through the operation of the compressor, a condensation cycle in which the compressed gas is condensed by condensing the compressed gas at high temperature and high pressure, an expansion cycle in which the pressure of the condensed gas is lowered, And an evaporation cycle in which the temperature of the freezing chamber is lowered by vaporizing the lowered refrigerant.
A double tube is connected between the condenser and the inflator in the refrigerator having the above-mentioned cooling cycle, and the cooling efficiency of the refrigerator is improved by cooling the refrigerant discharged from the condenser by the low-temperature / low-pressure refrigerant discharged from the evaporator. At this time, the double tube may include a first refrigerant pipe and a second refrigerant pipe for receiving the first refrigerant pipe and the first refrigerant pipe from the condenser to the inflator, and connected between the evaporator and the compressor. The cooling effect of the cooling cycle constituted by the compressor-condenser-expander-evaporator can be improved by sufficiently cooling the refrigerant discharged from the condenser by using the double tube.
Korean Patent No. 10-0836824 has been proposed as an example of a refrigerator using a double tube. Patent Document 10-0836824 discloses a gas cooler that uses dry ice (carbon dioxide) as a refrigerant and has a first flow path connected to the outlet side of the gas cooler and a second flow path connected to the outlet side of the evaporator to minimize volume increase due to the accumulator. Let the flow of heat exchange with each other. In this case, the first flow path moves downward of the main body, so that the refrigerator main body is compactly mounted without mounting the separate accumulator. However, as shown in FIG. 5 of Patent Document 10-0836824, since the double tube is formed in the form of a laminated coil, the volume of the double tube itself is limited to realize a compact refrigerator, It should be used as a refrigerant. Instead of increasing the cooling efficiency by using the double tube, the refrigerant flow of the double tube is lowered to remove the accumulator, but the technical consideration for the rapid freezing is excluded.
An object of the present invention is to provide a refrigerating apparatus and a refrigerating apparatus which can prevent refrigerant discharged from a condenser and a refrigerant discharged from an evaporator from being set to 70% to 130% of a volume evaporation tube of a double tube for performing heat exchange, Temperature freezer.
In order to achieve the above object, an ultra low temperature freezer according to an embodiment of the present invention may include an evaporator, a compressor, an expansion tube, a condenser, and a double tube in which an evaporation tube is housed. At this time, the double pipe is provided between the condenser and the expansion pipe, and the first refrigerant pipe connected between the condenser and the expansion pipe and the first refrigerant pipe are accommodated therein to form a double pipe, 2 refrigerant tube, and the volume of the refrigerant, which is the difference between the volume of the second refrigerant tube and the volume of the first refrigerant tube, is 70% to 130% with respect to the volume of the evaporation tube.
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According to the present invention, the double tube is formed such that the volume of the double tube in which the refrigerant discharged from the condenser and the refrigerant discharged from the evaporator performs heat exchange is 70% to 130% of the volume of the evaporator tube, Can be rapidly lowered to a very low temperature.
FIG. 1 is a perspective view of an ultra low temperature freezer according to an embodiment of the present invention.
2 is a view for explaining a refrigeration cycle of the ultra low temperature freezer according to the embodiment of the present invention.
Figs. 3 and 4 show reference views for an example of the double tube shown in Fig.
Figures 5 and 6 show reference drawings for a structure in which a double tube and a double tube disposed between the body and the body are molded.
Figure 7 shows a reference drawing for a method of determining the volume of a double tube according to an embodiment.
8 is a view for explaining the refrigeration cycle of the ultra low temperature freezer according to another embodiment of the present invention.
The evaporator referred to in this specification is composed of an evaporator tube, in which the evaporator and the evaporator tube can be described in terms of their meanings.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.
FIG. 1 is a perspective view of an ultra
Referring to FIGS. 1 and 2 together, the ultra
The
The
In the
The
The
The refrigerant discharged from the
The
here,
1) The volume of the evaporator tube refers to the volume calculated based on the inner diameter of the evaporator tube,
2) The volume of the
At this time, the volume of the
The volume of the
Here, the volume of the
The refrigerant discharged from the evaporator to the
At this time, the volume of the second
The volume of the evaporator tube is proportional to the cooling capacity for lowering the temperature of the
That is, the freezing
At this time, the volume of the first
12 / 12.5 = 96%.
On the other hand, when the evaporation pipe and the second refrigerant tube 142 (or the first refrigerant tube 141) according to the above-mentioned volume ratio have a similar volume,
The temperature of the refrigerant flowing into the
The reduction of the expansion temperature difference DELTA T prevents the temperature of the refrigerant flowing through the evaporation pipe from being lowered to -100 DEG C or lower and the temperature of the refrigerant to be -70 DEG C to -80 DEG C. That is, the ultra-low temperature freezer according to the embodiment allows rapid reaching of a constant temperature range (-70 ° C to -80 ° C), and can be achieved in a predetermined temperature range (-70 ° C to -80 ° C Lt; 0 > C). The medical freezer according to the embodiment allows cells, DNA, blood, and other materials requiring experimentation or preservation to be stored at a rapid and constant temperature range.
FIGS. 3 and 4 show reference views for an example of the
Referring to FIG. 3, in the
In Fig. 4, the
5 shows an example in which the
When the foamed urethane is filled in the region S1, the
FIG. 7 shows a reference diagram of a method for determining the volume of a
Referring to FIG. 7, the
The volume of the circular pipe shape can be calculated according to Equation (1) below, and the volume of the first
Where v is the volume of the cylinder, Π is the circumferential rate, r is the radius of the cylinder, and h is the length of the cylinder.
The volume of the first
Here, v1 is the volume of the first
Next, the volume of the second
Here, v2 is the volume of the second
The volume of the car can be calculated as V2 - V1. The length can be adjusted so that the calculated volume of the main body according to Equations (1) to (3) is 70% to 130% of the volume of the evaporator tube. When the volume of the refrigerant is equal to the volume of the evaporator tube, the refrigerant flowing through the evaporator tube can be sufficiently preheated. If the volume of the refrigerant is 100% or more of the evaporator tube volume, further preheating may be possible. If the refrigerating temperature of the ultra low temperature freezer according to the embodiment does not need to be lowered to -80 ° C or lower, the difference volume of the evaporator tube volume may be 70% to 100%. On the contrary, And may be from 101% to 130% when it is necessary to cool to a temperature of 80 degrees or less. That is, the ratio of the volume to the volume of the evaporation tube can be determined according to how much the temperature of the freezing
If the length of the evaporator and the length of the second
8 is a view for explaining the refrigeration cycle of the ultra low temperature freezer according to another embodiment of the present invention.
Referring to FIG. 8, the refrigeration cycle of the ultra-low temperature freezer according to the embodiment has a refrigeration cycle of compression-condensation-expansion-evaporation, as described with reference to FIG. 2, A freezer, a
Accordingly, the
The present embodiment is characterized in that the volume of the evaporator tube constituting the
The second movement time t2 of the refrigerant moving through the second
It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate description of the present invention and to facilitate understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.
100: Ultra-low temperature freezer 101: Freezer
110: compressor 120: condenser
130: Filter dryer 140: Double tube
141: first refrigerant tube 142: second refrigerant tube
150: inflator 160: evaporator (evaporator)
Claims (11)
A first refrigerant pipe provided between the condenser and the expansion pipe, the first refrigerant pipe being connected between the condenser and the expansion pipe; And
And a second refrigerant pipe connected to the evaporator and the compressor, the second refrigerant pipe housing the first refrigerant pipe to form a double pipe,
Wherein the volume of the first refrigerant tube is set to be 70% to 130% of the volume of the second refrigerant tube and the volume of the first refrigerant tube,
A first volume calculated for the first refrigerant tube based on an inner diameter and
Is a volume obtained by subtracting the first volume from the second volume with respect to a second volume calculated with respect to the second refrigerant tube based on the outer diameter.
The first refrigerant pipe and the second refrigerant pipe are connected to each other through a pipe,
And the directions of movement of the refrigerant are opposite to each other.
A condenser disposed between the first refrigerant pipe and the condenser,
Further comprising a filter drier for removing moisture and foreign substances from the refrigerant discharged from the condenser.
The second refrigerant pipe may include:
Wherein the coil is formed in the shape of a flat coil extending from the circumferential surface toward the center, and the center portion is protruded and connected to the expansion tube.
The second refrigerant pipe may include:
Wherein the evaporator has the same length as the evaporator tube, wherein the volume of the evaporator is the same as the inner volume of the evaporator tube.
The second refrigerant pipe may include:
Characterized in that it is molded by foamed urethane.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140060685A KR101438155B1 (en) | 2014-05-21 | 2014-05-21 | Ultra low temperature freezer |
CN201580025533.8A CN106461286A (en) | 2014-05-21 | 2015-05-19 | Ultra low temperature freezer |
PCT/KR2015/004994 WO2015178659A1 (en) | 2014-05-21 | 2015-05-19 | Ultra low temperature freezer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140060685A KR101438155B1 (en) | 2014-05-21 | 2014-05-21 | Ultra low temperature freezer |
Publications (1)
Publication Number | Publication Date |
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KR101438155B1 true KR101438155B1 (en) | 2014-09-05 |
Family
ID=51759476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140060685A KR101438155B1 (en) | 2014-05-21 | 2014-05-21 | Ultra low temperature freezer |
Country Status (3)
Country | Link |
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KR (1) | KR101438155B1 (en) |
CN (1) | CN106461286A (en) |
WO (1) | WO2015178659A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180089779A (en) | 2017-02-01 | 2018-08-09 | 주식회사 일신바이오베이스 | Cryogenic freezer |
KR101949090B1 (en) * | 2018-07-31 | 2019-02-15 | 주식회사 지엠에스 | deep freezer using induction pipe |
KR101977901B1 (en) * | 2018-12-17 | 2019-08-28 | 윤근진 | Cryogenic Freezer |
KR102024241B1 (en) * | 2018-10-25 | 2019-09-23 | 윤근진 | Cryogenic Freezer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100836824B1 (en) * | 2007-04-06 | 2008-06-11 | 삼성전자주식회사 | Refrigerant cycle device |
KR20080063150A (en) * | 2006-12-28 | 2008-07-03 | 가부시키가이샤 코벨코 마테리아루 도칸 | Heat exchanger |
KR20110060793A (en) * | 2009-11-30 | 2011-06-08 | 산요덴키가부시키가이샤 | Freezing device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02140170U (en) * | 1989-04-19 | 1990-11-22 | ||
KR19990080927A (en) * | 1998-04-23 | 1999-11-15 | 신영주 | Automotive Cooling System |
JP4062129B2 (en) * | 2003-03-05 | 2008-03-19 | 株式会社デンソー | Vapor compression refrigerator |
JP2006170571A (en) * | 2004-12-17 | 2006-06-29 | Hitachi Cable Ltd | Double multitubular heat exchanger |
KR20130050639A (en) * | 2011-11-08 | 2013-05-16 | 삼성전자주식회사 | Non-azeotropic mixed refrigerent cycle and refrigerator |
-
2014
- 2014-05-21 KR KR1020140060685A patent/KR101438155B1/en active IP Right Grant
-
2015
- 2015-05-19 CN CN201580025533.8A patent/CN106461286A/en active Pending
- 2015-05-19 WO PCT/KR2015/004994 patent/WO2015178659A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080063150A (en) * | 2006-12-28 | 2008-07-03 | 가부시키가이샤 코벨코 마테리아루 도칸 | Heat exchanger |
KR100836824B1 (en) * | 2007-04-06 | 2008-06-11 | 삼성전자주식회사 | Refrigerant cycle device |
KR20110060793A (en) * | 2009-11-30 | 2011-06-08 | 산요덴키가부시키가이샤 | Freezing device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180089779A (en) | 2017-02-01 | 2018-08-09 | 주식회사 일신바이오베이스 | Cryogenic freezer |
KR101949090B1 (en) * | 2018-07-31 | 2019-02-15 | 주식회사 지엠에스 | deep freezer using induction pipe |
KR102024241B1 (en) * | 2018-10-25 | 2019-09-23 | 윤근진 | Cryogenic Freezer |
KR101977901B1 (en) * | 2018-12-17 | 2019-08-28 | 윤근진 | Cryogenic Freezer |
Also Published As
Publication number | Publication date |
---|---|
CN106461286A (en) | 2017-02-22 |
WO2015178659A1 (en) | 2015-11-26 |
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