CN104142034B - A kind of micro-miniature refrigerator - Google Patents
A kind of micro-miniature refrigerator Download PDFInfo
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- CN104142034B CN104142034B CN201310169986.0A CN201310169986A CN104142034B CN 104142034 B CN104142034 B CN 104142034B CN 201310169986 A CN201310169986 A CN 201310169986A CN 104142034 B CN104142034 B CN 104142034B
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Abstract
A kind of micro-miniature refrigerator, it is made up of upper and lower cover plate, heat exchange core body and cold junction end socket: upper and lower fin is fixed on the planar substrates two sides of heat exchange core body; Upper and lower fin has the conduit perpendicular to planar substrates long side spaced apart at length direction; Upper fin is positioned at the low groove of upper cover plate; Lower fin is positioned at the upper groove of lower cover; Through hole and air inlet are arranged at top, upper cover plate one end, and the other end is not closed and established throttle orifice; Through hole and gas outlet are arranged at top, lower cover one end, and the other end has throttle orifice; Upper and lower cover plate and heat exchange core body form throttling refrigeration main body; Cold junction end socket is set in throttling refrigeration main body throttle orifice one end; Low pressure runner is formed between upper cover plate and upper fin; High pressure runner is formed between lower cover and lower fin; High-temperature, high pressure fluid enters high pressure runner from air inlet, becomes low-temp low-pressure fluid to enter low pressure runner, finally flow out from gas outlet after throttle orifice; Tool specific area is large, heat exchange efficiency is high, bear high-voltage operation and easily scale.
Description
Technical field
The present invention relates to a kind of micro-miniature refrigerator of deep cooling field.
Background technology
The micro-miniature refrigerator in deep cooling field is that a kind of structure is simple, easy to use, volume and quality is little, the refrigeration plant that is easy to that electronic device is integrated, cold head friction, noise are little, is easy to the various features such as microminiaturized.As a kind of convenient and reliable low-temperature receiver, can be widely used in industry and experimental study, such as: the humid test of Infrared Detectors, cooling CCD array, infrared spectrometer test specimen cools, and sweep electron microscope test specimen cools, and integrated circuit cooling and temperature stability control, miniature cold pump, the Cord blood of biological tissue, the aspect such as freeze drying and Portable low-temp therapeutic equipment.The micro-miniature refrigerator be widely used at present in middle-size and small-size and micro low-temperature refrigeration system is that the inferior spiral fin of Han Consulting is around tubular type throttling refrigerator, its structure is wound around red copper fin on thin-wall stainless steel capillary outer wall, integrated contra-flow heat exchanger, high-pressure working medium passage is stainless steel capillary, low pressure working fluid passage is the gap that stainless steel capillary and red copper fin surround, at high-pressure channel exit connecting joint discharge orifice and cold head (evaporimeter), namely constitute the micro-miniature refrigerator of an inferior type of Han Consulting.The making processing of this micro-miniature refrigerator needs special technique.Red copper fin needs to process on special lathe, is then wrapped on stainless steel capillary by thin for red copper fin on special lathe, and this operation needs higher technology and rich experience.In order to increase the bond strength between stainless steel capillary and red copper fin, improving thermal coupling between the two, reducing thermal contact resistance, needing the fin of winding and stainless steel capillary to carry out electroplating processes.Therefore, this micro-miniature refrigerator process-cycle is long, and price comparison is expensive, is not suitable for carrying out mass production.
Along with the development of MEMS (Micro-Electro-MechanicalSystems) Micrometer-Nanometer Processing Technology, micro-miniature refrigerator tends to microminiaturized more, and MMR (MicrominiatureJ-TRefrigerator) is thereupon raw.MMR adopts plate armature usually, utilize photoetching technique, the trickle conduit that glass substrate or stainless steel substrate carve a few to tens of microns forms the contra-flow heat exchanger of working medium, restricting element and evaporimeter, utilize encapsulation technology simultaneously, realize the sealing between plate, gases at high pressure are flowed in airtight cavity, just defines micro-miniature refrigerator.The external mainly U.S. and the Japan of country being mainly engaged in the development of MMR throttling refrigerator, through long-term accumulation and experiment and input, through engineering approaches product has been had to come out, domestic owing to being subject to the processing of miniature conduit, manufacturing and the restriction of encapsulation technology level, also do not grasp MMR throttling refrigerator technology completely at present, more do not have the product of mass to occur.
The micro-miniature refrigerator material of external MMR fabrication techniques is unconventional glass or silica-base material, and the making processing of microchannel adopts photoetching process or wet-etching technology.Photoetching process utilizes photoresist to spread upon on glass or silicon chip, and then photosensitive under ultraviolet, development and drying course realize the processing of micro-channel; And wet-etching technology utilizes the dissolving of liquid etchant and solid substrate to erode away microchannel.Packaging technology be then utilize dilution optical cement spread upon sheet glass carries out bonding.These technical process all more complicated, requirement on machining accuracy is very high, and easily blocks microchannel in process, and difficulty of processing is very large, and yield rate is lower.Domesticly at present also do not grasp MMR refrigerator process technology completely.
In order to launch the research of domestic micro-miniature refrigerator, on the basis of conventional mechanical processing, attempting processing micro-miniature refrigerator becomes a kind of possibility.In conventional mechanical processing technique, line cutting technology is owing to cutting the reduction gradually of string diameter, most I reaches 0.08mm, and can realize the processing of minitype channel completely, the packaging technology of micro-miniature refrigerator then can utilize laser weld or electron beam welding technology to realize.
Summary of the invention
The object of the present invention is to provide a kind of novel micro-miniature refrigerator, on the one hand, avoid the thermal contact resistance between the different parts of current miniature refrigerator, simplified manufacturing technique, to accomplish scale production; On the other hand, under lacking the prerequisite of ripe MMR throttling refrigerator process technology at home, provide a kind of structure simple, processing technology is ripe, and the manufacturing cycle is short, and yield rate is high, is easy to accomplish scale production, and can make up the micro-miniature refrigerator of MMR vacancy.
Technical scheme of the present invention is as follows:
Micro-miniature refrigerator provided by the invention, adopts Linear cut Machining Technology to make, utilizes laser welding technology to encapsulate.
Micro-miniature refrigerator of the present invention, its upper heat exchange core body stacked by upper cover plate 1, lower cover about 5, two and lower heat exchange core body, frame high pressure runner sidewall 3, cold junction end socket 6 and hot junction end socket 7 form:
Described upper cover plate 1 is the slot type cover plate with low groove on length direction;
Described lower cover 5 is the slot type cover plate with upper groove on length direction;
Described upper heat exchange core body and lower heat exchange core body are by a strip planar substrates and be vertically respectively fixed on the upper fin of described strip planar substrates upper surface and the lower fin composition of lower surface; Described upper fin and lower fin are the height equally distributed sheet fin of uniform distances or needle-like fin; Described sheet fin is parallel to described planar substrates long side; Described upper fin and lower fin have the conduit 8 perpendicular to described planar substrates long side spaced apart at length direction, the wide 0.2 ~ 0.5mm of conduit; The lower fin of described upper heat exchange core body is staggered relatively with the upper fin of described lower heat exchange core body and stack into the Integral heat-exchange core body stacked up and down;
Described frame high pressure runner sidewall 3 is a mount structure, and the described Integral heat-exchange core body frame stacked up and down is placed in its frame by it; The upper fin of described upper heat exchange core body is positioned at the low groove of described upper cover plate 1; The lower fin of described lower heat exchange core body is positioned at the upper groove of described lower cover 5;
The Integral heat-exchange core body that described upper cover plate 1, lower cover 5 and frame are loaded in frame high pressure runner sidewall 3 forms throttling refrigerator main body;
Described cold junction end socket 6 is set in one end of described throttling refrigerator main body; Described hot junction end socket 7 is set in the other end of described throttling refrigerator main body; End socket 7 upper surface, described hot junction and lateral surface have aperture; Lateral surface aperture is equipped with high-pressure fluid air inlet pipe;
Between the lower fin of described frame high pressure runner sidewall 3, upper heat exchange core body and the upper fin of lower heat exchange core body, gap forms high pressure runner A jointly;
Between the upper fin of described upper cover plate 1, lower cover 5, upper heat exchange core body and the lower fin of lower heat exchange core body, gap forms the first low pressure runner B jointly
1with the second low pressure runner B
2;
Frame high pressure runner sidewall 3 one end has an air admission hole, and the other end opens a throttle orifice C; Hot junction end socket 7 has an air inlet Q
1with a gas outlet Q
2;
Described high pressure runner A, the first low pressure runner B
1with the second low pressure runner B
2the conduit of arrival end is intensive relative to other conduit, described high pressure runner A, the first low pressure runner B
1with the second low pressure runner B
2the conduit spacing of arrival end is 3 ~ 5mm, to ensure that fluid is uniformly distributed after entering runner;
High-temperature, high pressure fluid is from air inlet Q
1enter high pressure runner A, after throttle orifice C throttling, become low-temp low-pressure fluid, then enter the first low pressure runner B respectively
1with the second low pressure runner B
2, finally from gas outlet Q
2flow out.
Micro-miniature refrigerator of the present invention, also can be made up of upper cover plate 1, lower cover 5, heat exchange core body and cold junction end socket 6:
Described upper cover plate 1 is the slot type cover plate with low groove on length direction;
Described lower cover 5 is the slot type cover plate with upper groove on length direction;
Described heat exchange core body is by a strip planar substrates and be vertically respectively fixed on the described upper fin of strip planar substrates upper surface and the lower fin of lower surface forms; Described upper fin and lower fin are the height equally distributed sheet fin of uniform distances or needle-like fin; Described sheet fin is parallel to the long side of described planar substrates; Described upper fin and lower fin have the conduit 8 perpendicular to described planar substrates long side spaced apart at length direction, and described conduit is wide is 0.2 ~ 0.5mm; The upper fin of described heat exchange core body is positioned at the low groove of described upper cover plate 1; The lower fin of described heat exchange core body is positioned at the upper groove of described lower cover 5;
It is the through hole of 4.0mm that top, described upper cover plate 1 one end has a diameter, and the other end is not closed;
It is the through hole of 4.0mm that top, described lower cover 5 one end has a diameter, and it is the throttle orifice of 0.15mm that other end has a diameter;
Described upper cover plate 1, lower cover 5 and Integral heat-exchange core body form throttling refrigerator main body;
Described cold junction end socket 6 is set in one end that described throttling refrigerator main body has throttle orifice;
Between described upper cover plate 1 and the upper fin of heat exchange core body, gap forms low pressure runner B jointly
3;
Between described lower cover 5 and the lower fin of heat exchange core body, gap forms high pressure runner A jointly;
An air inlet Q is opened in described lower cover 5 one end
1, the other end opens a throttle orifice C; A gas outlet Q is opened in upper cover plate 1 one end
2, the other end and lower cover 5 have one end of throttle orifice C to utilize cold junction end socket to encapsulate;
High-temperature, high pressure fluid is from air inlet Q
1enter high pressure runner A, after throttle orifice C throttling, become low-temp low-pressure fluid enter low pressure runner B
3, finally from gas outlet Q
2flow out.
Described channel depth equals or lower than fin height by 10% ~ 20%.
Described throttle orifice C aperture is within millimeter magnitude.
The material of described upper cover plate 1, lower cover 5, upper heat exchange core body, lower heat exchange core body, heat exchange core body, frame high pressure runner sidewall 3 and hot junction end socket 7 is stainless steel, and described cold junction end socket 6 material is stainless steel or red copper.
The inner surface of described cold junction end socket 6 processes small fin structure, with this enhanced heat exchange, reduces thermometric error.
The present invention also can only adopt the heat exchange core body 2 described in and upper cover plate 1, lower cover 5 and cold junction end socket 6 jointly to form a micro-miniature refrigerator; Wherein, one end of upper cover plate 1 has air inlet; One end of lower cover 5 has gas outlet, and the other end opens a throttle orifice C; Between upper cover plate 1 and heat exchange core body 2, gap forms low-pressure channel B
3; Between lower cover 5 and heat exchange core body 2, gap forms high-pressure channel A; There being the cold junction end socket 6 in one end of throttle orifice C to encapsulate, to form a miniature contra-flow heat exchanger.
Advantage of the present invention is, this micro-miniature refrigerator have employed the all-in-one-piece heat exchange core body of high-low pressure runner, fundamentally eliminates the thermal contact resistance between runner, and specific area can up to 5000m
2/ m
3, and can high-voltage operation be born, the fin of heat exchange core body can adopt wire cutting technology to process, and laser welding technology can be adopted during encapsulation to weld, and solder side is smooth and attractive in appearance, easily accomplishes scale production.
Accompanying drawing explanation
Fig. 1 is the structural blast figure that the present invention adopts the micro-miniature refrigerator of two heat exchange core body;
Fig. 2 is the contour structures schematic diagram that the present invention adopts the micro-miniature refrigerator of two heat exchange core body;
Fig. 3 is the structural representation of Integral heat-exchange core body of the present invention;
Fig. 4 is the structural representation of high-pressure channel sidewall of the present invention;
Fig. 5 is the internal structure schematic diagram that the present invention adopts the micro-miniature refrigerator of two heat exchange core body;
Fig. 6 is the cross sectional representation that the present invention adopts the micro-miniature refrigerator of two heat exchange core body;
Fig. 7 is the structural representation that the present invention adopts the micro-miniature refrigerator of single heat exchange core body;
Fig. 8 is the cross sectional representation that the present invention adopts the micro-miniature refrigerator of single heat exchange core body;
Fig. 9 is the axial sectional schematic diagram that the present invention adopts the micro-miniature refrigerator of single heat exchange core body;
Figure 10 is the contour structures schematic diagram that the present invention adopts the micro-miniature refrigerator of single heat exchange core body.
Detailed description of the invention
Embodiment 1
As Fig. 1,2,3,4, shown in 5 and 6, micro-miniature refrigerator of the present invention is three runner micro-miniature refrigerators, and wherein intermediate flow channel is high pressure runner A, and two side runners are the first low pressure runner B
1with the second low pressure runner B
2; This micro-miniature refrigerator is made up of upper cover plate 1 and lower cover 5, two heat exchange core bodies 2, high pressure runner sidewall 3, cold junction end socket 6 and hot junction end socket 7; Two heat exchange core bodies 2 are respectively heat exchange core body and lower heat exchange core body, by a strip planar substrates and respectively vertical be fixed on described strip planar substrates upper surface upper fin and lower surface under fin composition; Described upper fin and lower fin are the height equally distributed sheet fin of uniform distances or needle-like fin; Described sheet fin is parallel to described planar substrates long side; Described upper fin and lower fin have the conduit 8 perpendicular to described planar substrates long side spaced apart at length direction, the wide 0.2 ~ 0.5mm of conduit; The lower fin of described upper heat exchange core body is staggered relatively with the upper fin of described lower heat exchange core body and stack into the Integral heat-exchange core body stacked up and down; Upper cover plate 1 is the slot type cover plate with low groove on length direction; Lower cover 5 is the slot type cover plate with upper groove on length direction; Upper cover plate 1 and lower cover 5 length are 150mm, and thickness is 0.5mm, and width is 14.7mm; Integral heat-exchange core body 2 length is also 150mm, and width is also 14.7mm, and upper fin 21 is highly 3.0mm, and width is 0.3mm; Lower fin 22 is highly 2.5mm, and width is 0.3mm; Spacing between the adjacent fin in the same side two is 0.2mm, upper and lower fin substrate thickness is 0.5mm, on upper and lower fin longitudinal direction every 30mm process a degree of depth be fin height value or lower than fin height 10% ~ 20% width be 0.2mm conduit 8, wherein in the distance near high and low pressure runner air inlet 30mm, conduit is more intensive, processing a degree of depth every 3mm is fin height, and width is the conduit 8 of 0.2mm; High-pressure spray channel side wall 3 wall thickness 0.5mm, it is the through hole of 3.0mm that center, one end has a diameter, and other end center has the throttle orifice C that a diameter is 0.15mm; Upper and lower cover plates, Integral heat-exchange core body, cold junction end socket 6 and hot junction end socket 7 adopt stainless steel material manufacture to process.
In this micro-miniature refrigerator, from high pressure runner A, the first low pressure runner B
1with the second low pressure runner B
2arrival end rise, processes a conduit 8 every 3mm in the distance of front 30mm, its objective is and make fluid enter high pressure runner A, the first low pressure runner B
1with the second low pressure runner B
2inside repeatedly reallocate, to ensure that gas can Uniform Flow in each fluid channel;
The pressure limit of the high pressure runner design in this micro-miniature refrigerator is 1.5 ~ 3.0MPa, and the pressure limit of low pressure runner design is 0 ~ 0.5MPa; High-pressure fluid is from air inlet Q
1when entering the high pressure runner be jointly made up of fin gap on heat exchange core body 2 times fin gaps, high pressure runner sidewall 3 and another heat exchange core body 2, conduit 8 first through arrival end is repeatedly reallocated, then follow-up fluid channel is entered, then throttle orifice C is entered, after throttle orifice C, high-pressure fluid is become low-pressure low-temperature fluid by throttling, then gets back to low pressure runner (i.e. the first low pressure runner B be made up of two heat exchange core body 2 fin gaps and upper cover plate 1, lower cover 5
1with the second low pressure runner B
2), the conduit 8 first through arrival end is repeatedly reallocated, and then enters follow-up fluid channel, and the fluid in such high pressure runner is cooled by the low-pressure low-temperature fluid after throttling, completes heat exchange.At low pressure runner (the first low pressure runner B
1with the second low pressure runner B
2) inlet end face installs a cold junction end socket 6, forms the loop between gases at high pressure and low-pressure gas, then at the first low pressure runner B
1with the second low pressure runner B
2exit end face is installed a hot junction end socket 7 and is encapsulated, and just can manufacture a micro-miniature refrigerator.Gases at high pressure in this micro-miniature refrigerator after throttling, can realize the low temperature of 200K ~ 80K according to different working medium kinds at cold junction end socket 6 place.
Embodiment 2
As Fig. 7,8, shown in 9 and 10, the micro-miniature refrigerator of this embodiment 2 is the micro-miniature refrigerator of dual channel, and wherein a runner is high pressure runner, and another runner is low pressure runner; This micro-miniature refrigerator is made up of upper cover plate 1 and lower cover 5, heat exchange core body and cold junction end socket 6; Heat exchange core body length is 150mm, width is 14.7mm, upper fin height is 3.0mm, width is 0.3mm, lower fin height is 2.5mm, width is 0.3mm, the substrate thickness of upper and lower fin is 0.5mm, it is fin height value or lower than fin height by 10% ~ 20% that upper and lower fin processes a degree of depth every 30mm, width is the conduit 8 of 0.2mm, wherein before high and low pressure runner air inlet 30mm distance in process a degree of depth every 3mm be fin height, width is the conduit of 0.2mm; Upper cover plate 1 length is 150mm, and thickness is 0.5mm, and width is 14.7mm, and it is the through hole of 4.0mm that top, one end has a diameter, and the other end is not closed; Lower cover 5 length is 150mm, and thickness is 0.5mm, and width is 14.7mm, and it is the through hole of 4.0mm that top, one end has a diameter, and it is the throttle orifice of 0.15mm that other end has a diameter; Micro-miniature refrigerator cover plate and heat exchange core body adopt stainless steel material manufacture processing, and cold junction end socket 6 adopts red copper materials processing.
In this micro-miniature refrigerator, from high pressure runner A, low pressure runner B
3arrival end play front 30mm distance in process a conduit every 3mm, its objective is and make fluid enter high pressure runner A, low pressure runner B
3inside repeatedly reallocate, to ensure that gas can Uniform Flow in each fluid channel.
The pressure limit of the high pressure runner design in this micro-miniature refrigerator is 1.5 ~ 3.0MPa, and the pressure limit of low pressure runner design is 0 ~ 0.5MPa.
High-temperature, high pressure fluid is from air inlet Q
1when entering the high pressure runner be made up of fin gap under heat exchange core body and lower cover 5, conduit first through arrival end is repeatedly reallocated, then follow-up fluid channel is entered, throttle orifice C is entered at the port of export of runner, after throttle orifice C, high-temperature, high pressure fluid is become low-temp low-pressure fluid by throttling, then enters the low pressure runner B be made up of fin gap on heat exchange core body and upper cover plate 1
3, the conduit first through arrival end is repeatedly reallocated, and then enters follow-up fluid channel, and the fluid in such high pressure runner is cooled by the low-pressure low-temperature fluid after throttling, completes heat exchange.At exit end face and the low pressure runner B of high pressure runner A
3inlet end face installs a cold junction end socket 6, forms the loop between gases at high pressure and low-pressure gas, just can manufacture a micro-miniature refrigerator.Gases at high pressure in this micro-miniature refrigerator after throttling, can realize the low temperature of 200K ~ 80K according to different working medium kinds at cold junction end socket 6 place.
The concrete size that above example provides all describes micro-miniature refrigerator of the present invention in detail to help, and should not become restriction of the present invention, when practical operation, can change according to specific requirement.
Claims (7)
1. a micro-miniature refrigerator, it is characterized in that, be made up of upper cover plate (1), lower cover (5), about two the upper heat exchange core bodies stacked and lower heat exchange core body, frame high pressure runner sidewall (3), cold junction end socket (6) and hot junction end socket (7):
Described upper cover plate (1) is the slot type cover plate with low groove on length direction;
Described lower cover (5) is the slot type cover plate with upper groove on length direction;
Described upper heat exchange core body and lower heat exchange core body are by a strip planar substrates and be vertically respectively fixed on the upper fin of described strip planar substrates upper surface and the lower fin composition of lower surface; Described upper fin and lower fin are the height equally distributed sheet fin of uniform distances or needle-like fin; Described sheet fin is parallel to described planar substrates long side; Described upper fin and lower fin have the conduit (8) perpendicular to described planar substrates long side spaced apart at length direction, the wide 0.2 ~ 0.5mm of conduit; The lower fin of described upper heat exchange core body is staggered relatively with the upper fin of described lower heat exchange core body and stack into the Integral heat-exchange core body stacked up and down;
Described frame high pressure runner sidewall (3) is a mount structure, and the described Integral heat-exchange core body frame stacked up and down is placed in its frame by it; The upper fin of described upper heat exchange core body is positioned at the low groove of described upper cover plate (1); The lower fin of described lower heat exchange core body is positioned at the upper groove of described lower cover (5);
The Integral heat-exchange core body that described upper cover plate (1), lower cover (5) and frame are loaded in frame high pressure runner sidewall (3) forms throttling refrigerator main body;
Described cold junction end socket (6) is set in one end of described throttling refrigerator main body; Described hot junction end socket (7) is set in the other end of described throttling refrigerator main body; End socket (7) upper surface, described hot junction and lateral surface have aperture; Lateral surface aperture is equipped with high-pressure fluid air inlet pipe;
Between the lower fin of described frame high pressure runner sidewall (3), upper heat exchange core body and the upper fin of lower heat exchange core body, gap forms high pressure runner (A) jointly;
Between the upper fin of described upper cover plate (1), lower cover (5), upper heat exchange core body and the lower fin of lower heat exchange core body, gap forms the first low pressure runner (B jointly
1) and the second low pressure runner (B
2);
Frame high pressure runner sidewall (3) one end has an air admission hole, and the other end opens a throttle orifice (C); Hot junction end socket (7) has an air inlet (Q
1) and a gas outlet (Q
2);
Described high pressure runner (A), the first low pressure runner (B
1) and the second low pressure runner (B
2) other conduit is intensive relatively for the conduit (8) of arrival end, described high pressure runner (A), the first low pressure runner (B
1) and the second low pressure runner (B
2) the conduit spacing of arrival end is 3 ~ 5mm, to ensure that fluid is uniformly distributed after entering runner;
High-temperature, high pressure fluid is from air inlet (Q
1) enter high pressure runner (A), after throttle orifice (C) throttling, become low-temp low-pressure fluid, then enter the first low pressure runner (B respectively
1) and the second low pressure runner (B
2), finally from gas outlet (Q
2) flow out.
2. a micro-miniature refrigerator, is characterized in that, it is made up of upper cover plate (1), lower cover (5), a heat exchange core body and cold junction end socket (6):
Described upper cover plate (1) is the slot type cover plate with low groove on length direction;
Described lower cover (5) is the slot type cover plate with upper groove on length direction;
Described heat exchange core body is by a strip planar substrates and be vertically respectively fixed on the described upper fin of strip planar substrates upper surface and the lower fin of lower surface forms; Described upper fin and lower fin are the height equally distributed sheet fin of uniform distances or needle-like fin; Described sheet fin is parallel to the long side of described planar substrates; Described upper fin and lower fin have the conduit (8) perpendicular to described planar substrates long side spaced apart at length direction, and described conduit is wide is 0.2 ~ 0.5mm; The upper fin of described heat exchange core body is positioned at the low groove of described upper cover plate (1); The lower fin of described heat exchange core body is positioned at the upper groove of described lower cover (5);
It is the through hole of 4.0mm that described upper cover plate (1) top, one end has a diameter, and the other end is not closed;
It is the through hole of 4.0mm that described lower cover (5) top, one end has a diameter, and it is the throttle orifice of 0.15mm that other end has a diameter;
Described upper cover plate (1), lower cover (5) and heat exchange core body form throttling refrigerator main body;
Described cold junction end socket (6) is set in one end that described throttling refrigerator main body has throttle orifice;
Between described upper cover plate (1) and the upper fin of heat exchange core body, gap forms low pressure runner (B jointly
3);
Between described lower cover (5) and the lower fin of heat exchange core body, gap forms high pressure runner (A) jointly;
An air inlet (Q is opened in described lower cover (5) one end
1), the other end opens a throttle orifice (C); A gas outlet (Q is opened in upper cover plate (1) one end
2), the other end and lower cover (5) have throttle orifice (C
1) one end utilize cold junction end socket to encapsulate;
High-temperature, high pressure fluid is from air inlet (Q
1) enter high pressure runner (A), after throttle orifice (C) throttling, become low-temp low-pressure fluid enter low pressure runner (B
3), finally from gas outlet (Q
2) flow out.
3. micro-miniature refrigerator according to claim 1 and 2, is characterized in that, described channel depth equals or lower than fin height by 10% ~ 20%.
4. micro-miniature refrigerator according to claim 1 and 2, is characterized in that, described throttle orifice (C) aperture is within millimeter magnitude.
5. micro-miniature refrigerator according to claim 1 and 2, is characterized in that, the inner surface of described cold junction end socket (6) processes fin structure, with enhanced heat exchange.
6. micro-miniature refrigerator according to claim 1, it is characterized in that, the material of described upper cover plate (1), lower cover (5), upper heat exchange core body, lower heat exchange core body, frame high pressure runner sidewall (3) and hot junction end socket (7) is stainless steel, and described cold junction end socket (6) material is stainless steel or red copper.
7. micro-miniature refrigerator according to claim 2, it is characterized in that, the material of described upper cover plate (1), lower cover (5) and heat exchange core body is stainless steel, and described cold junction end socket (6) material is stainless steel or red copper.
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|---|---|---|---|
| CN201310169986.0A CN104142034B (en) | 2013-05-09 | 2013-05-09 | A kind of micro-miniature refrigerator |
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|---|---|---|---|
| CN201310169986.0A CN104142034B (en) | 2013-05-09 | 2013-05-09 | A kind of micro-miniature refrigerator |
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| CN104142034B true CN104142034B (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110470068A (en) * | 2019-08-22 | 2019-11-19 | 上海理工大学 | Multistage porous type microchannel throttling refrigerator |
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| CN113324344A (en) * | 2021-04-30 | 2021-08-31 | 武汉高德红外股份有限公司 | Throttling refrigerator |
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| CN104142034A (en) | 2014-11-12 |
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