CN2619210Y - Heat insulation air discharge expansion refrigerator - Google Patents
Heat insulation air discharge expansion refrigerator Download PDFInfo
- Publication number
- CN2619210Y CN2619210Y CN 03242892 CN03242892U CN2619210Y CN 2619210 Y CN2619210 Y CN 2619210Y CN 03242892 CN03242892 CN 03242892 CN 03242892 U CN03242892 U CN 03242892U CN 2619210 Y CN2619210 Y CN 2619210Y
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- China
- Prior art keywords
- heat exchanger
- low temperature
- refrigeration machine
- rotary valve
- swell refrigeration
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Abstract
The utility model relates to an insulated deflation expansion refrigerator, comprising a vacuum insulated vessel, a reversible enterclose-type compact heat exchanger disposed in the vacuum insulated vessel, a cold header heat exchanger, an air cylinder or two pulse tubes. The compact heat exchanger includes a high pressure gas channel and a low pressure gas channel. The utility model is characterized in that: which is also comprises a low temperature distribution valve positioned in the vacuum insulated vessel, the low temperature distribution valve is also includes a driving motor disposed outside the vacuum insulated vessel, a rotation valve core and a rotation valve seat used in the low temperature; the two channels of the reversible enterclose-type compact heat exchanger are respectively connected with the two air holes of the low temperature distribution valve, the other two corresponding air holes of the low temperature distribution valve are respectively connected with the air cylinder or the two expansion cavities of the pulse tubes by the two channels of the cold header heat exchanger. The utility model uses the compact heat exchanger to replace the regenerator, which is combined with the low temperature distribution valve, the continuous refrigeration is achieved, the performance of the refrigerator is greatly improved, and the structure is simple.
Description
Technical field
The utility model relates to refrigeration and cryogenic technique field, particularly a kind of adiabatic degassing swell refrigeration machine.
Background technology
Conventional insulation venting swell refrigeration machine has all adopted the heat exchange device of regenerator (or regenerator) as hot and cold air-flow, at regenerator (or regenerator) though in the cold fluid and hot fluid of heat exchange be with middle fluid, but since the pressure difference of cold fluid and hot fluid (as cold fluid pressure in the common Cryo Refrigerator is 0.4～0.8MPa, hot fluid pressure is 1.8～2.5MPa), can produce heat of compression loss and free wxpansion loss, reduce heat exchange efficiency, caused the refrigeration performance of refrigeration machine to descend; Simultaneously, because the heat transfer process of regenerator (or regenerator) is a batch (-type), so require the cold-storage filler must possess very big specific heat per unit volume, and nearly all material all can reduce very soon with its specific heat per unit volume of reduction of temperature, not only cause the raising of refrigeration machine cost, and the performance of further raising refrigeration machine is restricted.
Summary of the invention
The purpose of this utility model is: overcome the restriction on the cold performance of conventional insulation venting swell refrigeration mechanism, thereby a kind of adiabatic degassing swell refrigeration machine is provided.
The purpose of this utility model is achieved in that a kind of adiabatic degassing swell refrigeration machine that the utility model provides, comprise a vacuum insulation vessel and be arranged in the reversible dividing wall type compact heat exchanger that vacuum insulation vessel is provided with, cold header heat exchanger, cylinder or two pulse tubes, comprise a gases at high pressure runner and a low-pressure gas runner in the described reversible dividing wall type compact heat exchanger, it is characterized in that, comprise that also one is arranged in the low temperature distributing valve of vacuum insulation vessel, this low temperature distributing valve comprises that one is positioned at the outer drive motors of vacuum insulation vessel, be used for rotary spool and rotary valve base under the cryogenic conditions, drive motors is fixedly connected on the rotary spool by a rotary valve rod, have passage on the described rotary valve base, have gas booking groove on this rotary spool, the length of gas booking groove is less than the gap of adjacent two passages, rotary valve base and rotary spool are wrapped in the rotary valve shell, and rotary valve rod is with the rotary valve rod cover outward; Two runners of described reversible dividing wall type compact heat exchanger are communicated with two passages of low temperature distributing valve respectively, and the corresponding passage of two other of low temperature distributing valve is communicated with two expansion chambers of cylinder or pulse tube respectively by two runners of cold header heat exchanger.
The structure of described adiabatic degassing swell refrigeration machine is adopted mode, coaxial manner, U type or linear pattern mode side by side.
Described reversible dividing wall type heat exchanger is the reversible dividing wall type heat exchanger of metal mesh type.
Described adiabatic degassing swell refrigeration machine is adopted twin-stage or multi-stage refrigerating mode.
Also be provided with a damping mechanism on the piston rod of described cylinder.
Phase modulation valve in one also is set between the expansion chamber of described two pulse tubes.
Advantage of the present utility model is: a kind of adiabatic degassing swell refrigeration of the utility model machine adopts reversible dividing wall type heat exchanger to replace regenerator (or regenerator), and in conjunction with low temperature distributing valve realization refrigeration, as long as low temperature distributing valve distribution angle is reasonable, the heat exchanger heat transfer area is enough big, flow resistance is less, refrigeration machine can reach very low cryogenic temperature (even reaching liquid helium temperature) and big refrigerating capacity, and need not to rely on the cool storage material that has high specific heat at low temperatures, the refrigeration machine performance is improved greatly, reduced the complexity of refrigeration machine structure simultaneously, difficulty of processing and manufacturing cost, the reliability and the life-span of having improved refrigeration machine.
The purpose of this utility model, feature and advantage will be illustrated in conjunction with the accompanying drawings by preferred embodiment.
The drawing explanation
Fig. 1 is the structural representation of the adiabatic degassing swell refrigeration machine of single mobile damping piston mode
Fig. 2 is the structural representation of the adiabatic degassing swell refrigeration machine of single mobile coaxial arrangement mode
Fig. 3 is the structural representation of the adiabatic degassing swell refrigeration machine of the moving piston mode of two-track
Fig. 4 is the structural representation of the adiabatic degassing swell refrigeration machine of pm mode in the dipulse pipe
Fig. 5 is the structural representation that is used for the low temperature distributing valve of adiabatic degassing swell refrigeration machine
Accompanying drawing indicates
1, gases at high pressure runner 2, low-pressure gas runner 3, reversible dividing wall type compact heat exchanger
4, low temperature distributing valve 5, runner A 6, runner B
7, cold header heat exchanger 8, vacuum insulation vessel 9, expansion chamber A
10, mobile piston 11, expansion chamber B 12, mobile piston connecting rod
13, damping piston 14, damping hole 15, damping cavity
16, damping control valve 17, pulse tube A 18, pulse tube B
19, interior phase modulation valve 20, motor 21, damping pressure control valve
22, rotary valve rod 23, cylinder 24, rotary spool
25, rotary valve base 26, rotary valve shell 27, rotary valve rod cover
28, gas booking groove 29, passage
The specific embodiment
With reference to accompanying drawing, will be described in detail specific embodiments of the present utility model and operation principle thereof.
At first, introduce the low temperature distributing valve, as shown in Figure 5, this low temperature distributing valve comprises and one is positioned at the outer motor 20 of vacuum insulation vessel, is used for rotary spool 24 and rotary valve base 25 under the cryogenic conditions, motor 20 is fixedly connected on the rotary spool 24 by a rotary valve rod 22, have gas booking groove 28 on this rotary spool 24, have passage 29 on the described rotary valve base 25, the length of gas booking groove 28 is less than the gap of adjacent two passages 29, rotary valve base 25 is wrapped in the rotary valve shell 26 with rotary spool 24, the rotary valve rod 22 outer rotary valve rod covers 27 that are with; Outside the described motor 20 a drive motors cover is arranged, the junction of motor 20 and rotary valve rod 22 is equipped with preloading spring, adopt the lax usefulness that connects between rotary valve rod 22 and the motor shaft, and spring is set the precompression to spool that transmits downwards along valve rod is provided, to guarantee spool and the good sealing of valve base chamber.
Make the heat exchange type adiabatic degassing swell refrigeration machine of a single mobile damping piston mode, as shown in Figure 1, the gases at high pressure that come from compressor are sent into reversible dividing wall type compact heat exchanger 3 vacuum insulation vessel 8 after 1 precooling of gases at high pressure runner, enter low temperature distributing valve 4;
Low temperature distributing valve 4 switches the rotary spool of low temperature distributing valve 4 by drive motors 20, make the expansion chamber A9 connection of gases at high pressure runner 1 by runner A5 in the cold header heat exchanger 7 and cylinder 23, low-pressure gas runner 2 is connected by the expansion chamber B11 of runner B6 in the cold header heat exchanger 7 and cylinder 23, then gases at high pressure enter among the expansion chamber A9 through runner A5, mobile piston 10 is under the pressure effect of gases at high pressure, B11 moves to another expansion chamber, the volume of expansion chamber A9 increases, the inflation of finishing expansion chamber A9 is boosted and intake process, simultaneously, the volume of expansion chamber B11 reduces, and finishes venting, expand and refrigeration;
Then, switch low temperature distributing valve 4 again expansion chamber A9 and 2 connections of low-pressure gas runner, expansion chamber B11 will be connected with gases at high pressure runner 1, then expansion chamber A9 begins venting expansion and refrigeration, and simultaneously, expansion chamber B11 begins air inlet.
At last, the low-pressure low-temperature gas among the expansion chamber A9 behind the swell refrigeration through cold header heat exchanger 7 get cold after, enter rewarming in the reversible dividing wall type compact heat exchanger 3 through low temperature distributing valve 4 again, get back in the compressor.In compressor, be compressed into gases at high pressure once more, so move in circles, can finish the continuous cooling process, and realize profound hypothermia district refrigeration.
In the present embodiment, adopted single mobile piston to realize twice swell refrigeration that one-period is interior, simultaneously, in order to control the motion of mobile piston 10, reduce mobile piston 10 shock and vibration to cylinder 23 at last lower dead center place, at the room temperature place one damping mechanism is set by mobile piston connecting rod 12, when mobile piston 10 when top dead centre moves, promote damping piston 13 gas in the damping cylinder 23 is flowed to damping cavity 15 (pressure in the damping cavity 15 can be regulated by damping pressure control valve 21) through damping hole 14, because the resistance of damping hole 14 dissipates, the motion energy that mobile piston 10 is made progress partly is converted into heat energy, thereby, stop or reduced the impact of 10 pairs of cylinders 23 of mobile piston, reduced the vibration of refrigeration machine.This scheme vibration is little, motion is steady, long working life; But structure is comparatively complicated.Refrigeration machine of the present utility model can be adopted twin-stage or multistage mode.
Make the heat exchange type adiabatic degassing swell refrigeration machine of a single mobile piston coaxial arrangement mode, as shown in Figure 2, after gases at high pressure runner 1 precooling from the reversible dividing wall type compact heat exchanger 3 of gases at high pressure process that compressor comes, enter low temperature distributing valve 4;
Low temperature distributing valve 4 switches the rotary spool of low temperature distributing valve 4 by drive motors 20, make the expansion chamber A9 connection of gases at high pressure runner 1 by runner A5 in the cold header heat exchanger 7 and cylinder 23, low-pressure gas runner 2 is connected by the expansion chamber B11 of runner B6 in the cold header heat exchanger 7 and cylinder 23, then gases at high pressure enter among the expansion chamber A9 through runner A5, mobile piston 10 is under the pressure effect of gases at high pressure, B11 moves to another expansion chamber, the volume of expansion chamber A9 increases, the inflation of finishing expansion chamber A9 is boosted and intake process, simultaneously, the volume of expansion chamber B11 reduces, and finishes venting, expand and refrigeration;
Then, switch low temperature distributing valve 4 again expansion chamber A9 and 2 connections of low-pressure gas runner, expansion chamber B11 will be connected with gases at high pressure runner 1, then expansion chamber A9 begins venting expansion and refrigeration, and simultaneously, expansion chamber B11 begins air inlet.
At last, the low-pressure low-temperature gas among the expansion chamber A9 behind the swell refrigeration through cold header heat exchanger 7 get cold after, enter rewarming in the reversible dividing wall type compact heat exchanger 3 through low temperature distributing valve 4 again, get back in the compressor.In compressor, be compressed into gases at high pressure once more, so move in circles, can finish the continuous cooling process, and realize profound hypothermia district refrigeration.
In the present embodiment, simple in structure, compact in order to make refrigeration machine, removed the damping mechanism among the embodiment 1, and with cylinder 23 coaxial arrangement in the below of low temperature distributing valve 4, damping mode can be realized by the distribution differential seat angle in advance that adopts low temperature distributing valve .4.Therefore, this scenario-frame is simply compact.
Make the heat exchange type adiabatic degassing swell refrigeration machine of a pair of mobile piston mode, as shown in Figure 3, after gases at high pressure runner 1 precooling from the reversible dividing wall type compact heat exchanger 3 of gases at high pressure process that compressor comes, enter low temperature distributing valve 4;
Low temperature distributing valve 4 switches the rotary spool of low temperature distributing valve 4 by drive motors 20 driven rotary valve rods 22, make the expansion chamber A9 connection of gases at high pressure runner 1 by runner A5 in the cold header heat exchanger 7 and cylinder 23, low-pressure gas runner 2 is connected by the expansion chamber B11 of runner B6 in the cold header heat exchanger 7 and cylinder 23, then gases at high pressure enter among the expansion chamber A9 through runner A5, mobile piston 10 is under the pressure effect of gases at high pressure, B11 moves to another expansion chamber, the volume of expansion chamber A9 increases, the inflation of finishing expansion chamber A9 is boosted and intake process, simultaneously, the volume of expansion chamber B11 reduces, and finishes venting, expand and refrigeration;
Then, switch low temperature distributing valve 4 again expansion chamber A9 and 2 connections of low-pressure gas runner, expansion chamber B11 will be connected with gases at high pressure runner 1, then expansion chamber A9 begins venting expansion and refrigeration, and simultaneously, expansion chamber B11 begins air inlet.
At last, the low-pressure low-temperature gas among the expansion chamber A9 behind the swell refrigeration through cold header heat exchanger 7 get cold after, enter rewarming in the reversible dividing wall type compact heat exchanger 3 through low temperature distributing valve 4 again, get back in the compressor.In compressor, be compressed into gases at high pressure once more, so move in circles, can finish the continuous cooling process, and realize profound hypothermia district refrigeration.
In the present embodiment, adopted the moving piston of two-track to realize twice swell refrigeration that one-period is interior, indoor temperature end at two cylinders 23 is communicated with by interior phase modulation valve 19, aperture by interior phase modulation valve 19 is regulated, improve the shock and vibration of mobile piston,, adjust the pressure in two room temperature chambeies by damping pressure control valve 21 to cylinder 23, so just can regulate damping at the refrigeration machine duration of work very easily, make the running of refrigeration machine reach optimum.
Embodiment 4
Make the heat exchange type adiabatic degassing swell refrigeration machine of pm mode in a pair of pulse tube, as shown in Figure 4, after the high pressure runner precooling from the reversible dividing wall type compact heat exchanger 3 of gases at high pressure process that compressor comes, enter low temperature distributing valve 4;
Rotary valve drive motors 20 drives the spool of low temperature distributing valve 4, switching low temperature distributing valve 4 connects the high pressure runner 1 and the runner 6 of runner 5 connections, low pressure runner 2 and the pulse tube 18 of pulse tube 17, then gases at high pressure enter in the pulse tube 17 through runner 5 and cold header heat exchanger 7, carry out gas replenishment process, at this moment, pulse tube 18 carries out exhaust process, and pulse tube 18 has served as the air reservoir of pulse tube 17 by interior phase modulation valve 19, pulse tube 17 becomes the aperture air reservoir, and finishes pulse tube refrigeration.
Then, switching low temperature distributing valve 4 will connect pulse tube 17 and 2 connections of low pressure runner, pulse tube 18 with high pressure runner 1, then pulse tube 17 begins venting expansion and refrigeration, simultaneously, pulse tube 18 beginning air inlets, at this moment, pulse tube 17 has served as the air reservoir of pulse tube 18 by interior phase modulation valve 19, pulse tube 18 also becomes the aperture air reservoir, and finishes pulse tube refrigeration.
At last, the low-pressure low-temperature gas in the pulse tube 17 behind the swell refrigeration through cold header heat exchanger 7 get cold after, enter rewarming in the reversible dividing wall type compact heat exchanger 3 through low temperature distributing valve 4 again, get back in the compressor.In compressor, be compressed into gases at high pressure once more, so move in circles, can finish the continuous cooling process, and realize profound hypothermia district refrigeration.
In the present embodiment, adopt the dipulse pipe to realize twice swell refrigeration that one-period is interior, the hot junction of two pulse tubes links together by interior phase modulation valve 19, because the work of two pulse tubes is just in time anti-phase, so air reservoir is each other realized the interior phase modulation of two pulse tubes again by the aperture aperture of phase modulation valve 19 in regulating; Therefore, this scheme vibration is little, easy to adjust, manufacturing is simple.
Claims (7)
1, a kind of adiabatic degassing swell refrigeration machine, comprise a vacuum insulation vessel and the reversible dividing wall type compact heat exchanger that is arranged in vacuum insulation vessel, cylinder or two pulse tubes and attached to the cold header heat exchanger on cylinder or two pulse tubes, two runners of this cold header heat exchanger are communicated with two expansion chambers of cylinder or pulse tube respectively, comprise a gases at high pressure runner and a low-pressure gas runner in the described reversible dividing wall type compact heat exchanger, it is characterized in that, comprise that also one is arranged in the low temperature distributing valve of vacuum insulation vessel, this low temperature distributing valve is positioned at the outer motor of vacuum insulation vessel by one and constitutes with the rotary spool and the rotary valve base that are used under the cryogenic conditions; Two runners of described reversible dividing wall type compact heat exchanger respectively with rotary valve base on two passages be communicated with, the corresponding passage of two other of rotary valve base is communicated with two runners of cold header heat exchanger respectively.
2, by the described a kind of adiabatic degassing swell refrigeration machine of claim 1, it is characterized in that, described low temperature distributing valve, its motor is fixedly connected on the rotary spool by a rotary valve rod, have gas booking groove on this rotary spool, have passage on the rotary valve base, the length of gas booking groove is less than the gap of adjacent two passages, rotary valve base and rotary spool are wrapped in the rotary valve shell, and rotary valve rod also is with the rotary valve rod cover outward.
3, by the described a kind of adiabatic degassing swell refrigeration machine of claim 1, it is characterized in that the structure of described adiabatic degassing swell refrigeration machine is adopted mode, coaxial manner, U type or linear pattern mode side by side.
4, by the described a kind of adiabatic degassing swell refrigeration machine of claim 1, it is characterized in that described reversible dividing wall type heat exchanger is the reversible dividing wall type heat exchanger of metal mesh type.
5, by the described a kind of adiabatic degassing swell refrigeration machine of claim 1, it is characterized in that described adiabatic degassing swell refrigeration machine is adopted twin-stage or multi-stage refrigerating mode.
6, by the described a kind of adiabatic degassing swell refrigeration machine of claim 1, it is characterized in that, also be provided with a damping mechanism on the piston rod of described cylinder.
7, by the described a kind of adiabatic degassing swell refrigeration machine of claim 1, it is characterized in that, phase modulation valve in also is set between the expansion chamber of described two pulse tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242892 CN2619210Y (en) | 2003-04-01 | 2003-04-01 | Heat insulation air discharge expansion refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242892 CN2619210Y (en) | 2003-04-01 | 2003-04-01 | Heat insulation air discharge expansion refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2619210Y true CN2619210Y (en) | 2004-06-02 |
Family
ID=34250723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03242892 Expired - Lifetime CN2619210Y (en) | 2003-04-01 | 2003-04-01 | Heat insulation air discharge expansion refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2619210Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398939C (en) * | 2003-03-28 | 2008-07-02 | 中国科学院理化技术研究所 | Heat exchange type heat insulating air relensing expansion refringerating machine |
| CN106091461A (en) * | 2016-06-12 | 2016-11-09 | 铜陵海科锐科技有限公司 | High-gain energy-saving type deep cooling machine |
| CN113566469A (en) * | 2021-07-30 | 2021-10-29 | 安徽万瑞冷电科技有限公司 | Liquid nitrogen auxiliary cooling large-cooling-capacity refrigerating machine and refrigerating method |
-
2003
- 2003-04-01 CN CN 03242892 patent/CN2619210Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398939C (en) * | 2003-03-28 | 2008-07-02 | 中国科学院理化技术研究所 | Heat exchange type heat insulating air relensing expansion refringerating machine |
| CN106091461A (en) * | 2016-06-12 | 2016-11-09 | 铜陵海科锐科技有限公司 | High-gain energy-saving type deep cooling machine |
| CN113566469A (en) * | 2021-07-30 | 2021-10-29 | 安徽万瑞冷电科技有限公司 | Liquid nitrogen auxiliary cooling large-cooling-capacity refrigerating machine and refrigerating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080702 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080702 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |