阅读说明：本技术 一种采用平面密封阀和回热器预冷的jt/gm制冷机及制冷方法 (JT/GM refrigerator precooled by planar seal valve and heat regenerator and refrigeration method ) 是由 张海峰 武义锋 丁怀况 曾环 俞杰 王建勇 邓家良 冯欣宇 程祥 韩雨松 杨杨 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种采用平面密封阀和回热器预冷的JT/GM制冷机及制冷方法,包括压缩机、管道、储气腔、一级回热器、节流制冷器,所述压缩机通过管道与储气腔相连通,所述储气腔的内腔安装有阀组,所述阀组包括固定阀、旋转阀,所述固定阀的内腔圆周分布开设有三个排气孔,且所述排气孔均与旋转阀相连通,所述旋转阀的表面相位角均开设有与排气孔相对应的第二进气孔,所述阀组通过管道与一级回热器相连通,所述一级回热器的下端通过管道贯通连接有二级回热器,所述二级回热器的下端通过管道与节流制冷器相连通,有效的提高了制冷效率,同时提升了有效的制冷量,大大提高了装置的实用性,取消了外部的预冷部件,结构上整合成一套设备,更加紧凑。(The invention discloses a JT/GM refrigerator precooled by a plane seal valve and a regenerator and a refrigeration method, the JT/GM refrigerator comprises a compressor, a pipeline, a gas storage cavity, a primary regenerator and a throttling refrigerator, the compressor is communicated with the gas storage cavity through the pipeline, a valve bank is arranged in the inner cavity of the gas storage cavity, the valve bank comprises a fixed valve and a rotary valve, three exhaust holes are distributed on the circumference of the inner cavity of the fixed valve and are communicated with the rotary valve, second air inlet holes corresponding to the exhaust holes are arranged on the surface phase angle of the rotary valve, the valve bank is communicated with the primary regenerator through the pipeline, the lower end of the primary regenerator is communicated with a secondary regenerator through the pipeline, the lower end of the secondary regenerator is communicated with the throttling refrigerator through the pipeline, the refrigeration efficiency is effectively improved, and the effective refrigeration amount is improved at the same time, the practicality of the device is greatly improved, an external precooling component is eliminated, and the device is structurally integrated into a set of equipment and is more compact.)

1. The utility model provides an adopt JT GM refrigerator of plane seal valve and regenerator precooling, its characterized in that, includes compressor (1), pipeline (2), gas storage chamber (3), one-level regenerator (6), throttle refrigerator (8), compressor (1) is linked together through pipeline (2) and gas storage chamber (3), valves (4) are installed to the inner chamber of gas storage chamber (3), valves (4) include fixed valve (41), rotary valve (42), three exhaust hole (413) have been seted up in the inner chamber circumference distribution of fixed valve (41), just exhaust hole (413) all are linked together with rotary valve (42), the surface phase angle of rotary valve (42) all seted up with exhaust hole (413) corresponding second inlet port (421), form six passageways between fixed valve (41) and rotary valve (42), just the passageway is the series connection setting, the valve bank (4) is communicated with a primary heat regenerator (6) through a pipeline (2), the lower end of the primary heat regenerator (6) is connected with a secondary heat regenerator (7) through the pipeline (2), and the lower end of the secondary heat regenerator (7) is communicated with a throttling refrigerator (8) through the pipeline (2).

2. The JT/GM refrigerator with planar sealing valve and regenerator for precooling according to claim 1, wherein the valve set (4) is connected through a buffer tank (9) by a pipeline (2), and the lower end of the buffer tank (9) is communicated with the compressor (1) by the pipeline (2).

3. The JT/GM refrigerator with a planar seal valve and a regenerator for precooling according to claim 1, wherein when the valve set (4) is opened, the primary regenerator (6), the throttling refrigerator (8) and the buffer tank (9) are all communicated with the gas storage cavity (3), and when the valve set (4) is closed, the primary regenerator (6), the throttling refrigerator (8) and the buffer tank (9) are all isolated from the gas storage cavity (3).

4. The JT/GM refrigerator using a flat seal valve and a regenerator for precooling according to claim 1, wherein a first air inlet (411) is opened at the rear end of the fixed valve (41), and the first air inlet (411) is communicated with the rotary valve (42).

5. The JT/GM refrigerator using a flat seal valve and a regenerator for precooling according to claim 1, wherein at least one through hole (412) is opened on both sides of the fixed valve (41), and the through holes (412) are both communicated with the exhaust holes (413).

6. The JT/GM refrigerator using a planar sealing valve and a regenerator for precooling according to claim 1, wherein the inner cavity of the rotary valve (42) is located between the second inlet holes (421) and is provided with oblong valve holes (422) corresponding to the first inlet holes (411).

7. The JT/GM refrigerator using a flat seal valve and a regenerator for precooling according to claim 1, wherein the valve set (4) further comprises a driving connection hole (43), a driving mechanism (5) is fixedly connected to the outer side of the duct (2), and the output end of the driving mechanism (5) is connected to the driving connection hole (43).

8. The JT/GM refrigerator using a flat seal valve and regenerator for precooling according to claim 1, wherein a delay passage is provided between passages formed between the plurality of discharge ports (413) and the second gas inlet port (421).

9. The JT/GM refrigerator with planar seal valve and regenerator pre-cooling in accordance with claim 1, wherein the primary regenerator (6) is reciprocated by an external driving mechanism, and the secondary regenerator (7) is connected to the primary regenerator (6) and is driven to reciprocate.

10. A method of refrigerating with a JT/GM refrigerator using a flat seal valve and a regenerator for precooling as claimed in any one of claims 1 to 9, comprising the steps of: high-pressure helium gas provided by the compressor (1) enters an inner cavity of the pipeline (2) and is controlled by the valve group (4), when the valve group (4) is opened, the high-pressure helium gas enters an inner cavity of the primary heat regenerator (6) to carry out adiabatic expansion, a first refrigeration effect is generated, the temperature of gas after adiabatic expansion is reduced, and the generated refrigerating capacity is reserved; the gas with reduced temperature enters the inner cavity of the secondary heat regenerator (7), and the secondary heat regenerator (7) is connected with the primary heat regenerator (6) through the pipeline (2) and synchronously moves in a reciprocating manner, so that the gas entering the inner cavity of the secondary heat regenerator (7) can be subjected to adiabatic expansion again to generate a secondary refrigeration effect; and a part of low-temperature gas passing through the secondary refrigeration effect is conveyed from the inner cavity of the secondary regenerator (7) to the primary regenerator (6) through the pipeline (2) and then returns to the inner cavity of the valve bank (4), the other part of helium gas with lower temperature enters the inner cavity of the throttling refrigerator (8), a third-stage refrigeration effect is generated in the inner cavity of the throttling refrigerator (8), the gas coming out of the inner cavity of the throttling refrigerator (8) is conveyed to the inner cavity of the buffer tank (9) through the valve bank (4), and the gas returns to the inner cavity of the compressor (1) after being buffered in the inner cavity of the buffer tank (9).

Technical Field

The invention relates to the field of refrigeration equipment, in particular to a JT/GM refrigerator precooled by a planar sealing valve and a regenerator and a refrigeration method.

Background

The refrigerating machine is a machine which transfers heat of a cooled object with a lower temperature to an environmental medium to obtain cold, and the main performance indexes include working temperature (evaporation temperature and condensation temperature for a vapor compression refrigerating machine, temperature of the cooled object and temperature of a cooling medium for a gas compression refrigerating machine and a semiconductor refrigerating machine), refrigerating capacity (heat removed from the cooled object in a unit time by the refrigerating machine), power or heat consumption, refrigerating coefficient (index for measuring the economy of the compression refrigerating machine, namely cold obtained by consuming a unit function), thermodynamic coefficient (index for measuring the economy of the absorption refrigerating machine and the vapor injection refrigerating machine, namely cold obtained by consuming a unit heat) and the like.

Most of the existing refrigerators adopt JT/GM refrigerators which need an external throttle valve and an external precooling unit, and the system structure is complex and cannot be produced in a production mode.

Chinese patent 105783319B discloses a precooling low-temperature J-T throttling refrigerator for a regenerative refrigerator, which is composed of a precooling compressor C1, a heat regenerator hot end heat exchanger HX1, a first stage regenerator RG1, a first stage cold end heat exchanger HX2, a first stage pulse tube PT1, a first stage pulse tube hot end heat exchanger HX3, a first stage inertia tube I1, a first stage gas reservoir R1, a first stage charge valve V1, a flow-blocking acoustic power transmission part MIAT1, a second stage regenerator RG2, and the like.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a refrigerator requiring no external precooling member and no external throttle valve and a method for refrigerating the refrigerator are provided.

The invention solves the technical problems through the following technical means: a JT/GM refrigerator using planar seal valve and heat regenerator for precooling and its refrigerating method includes compressor, pipeline, gas storage cavity, primary heat regenerator, throttle refrigerator, the compressor is communicated with the gas storage cavity through a pipeline, a valve group is arranged in the inner cavity of the gas storage cavity, the valve group comprises a fixed valve and a rotary valve, three exhaust holes are distributed on the circumference of the inner cavity of the fixed valve, the exhaust holes are communicated with the rotary valve, the surface phase angle of the rotary valve is provided with second air inlet holes corresponding to the exhaust holes, six channels are formed between the fixed valve and the rotary valve, and the channels are arranged in series, the valve group is communicated with the primary heat regenerator through a pipeline, the lower end of the primary heat regenerator is connected with the secondary heat regenerator through a pipeline in a through manner, and the lower end of the secondary heat regenerator is communicated with the throttling refrigerator through a pipeline.

The gas conveying channel is integrated by adopting the valve bank, and is in a serial form by being provided with six channels, and the delay channel is arranged in the process of connecting the channels in series; the delay channel has self-closing function, and can reduce pressure of gas, so that refrigeration effect is generated, and the practicability of the equipment is effectively improved.

Preferably: the valve bank is connected with a buffer tank through a pipeline in a through mode, and the lower end of the buffer tank is communicated with the compressor through a pipeline.

Preferably: when the valve group is opened, the primary heat regenerator, the throttling refrigerator and the buffer tank are communicated with the gas storage cavity, and when the valve group is closed, the primary heat regenerator, the throttling refrigerator and the buffer tank are separated from the gas storage cavity.

Preferably: and a first air inlet is formed in the rear end of the fixed valve and communicated with the rotary valve.

Preferably: at least one through hole is respectively formed in the two sides of the fixed valve, and the through holes are communicated with the exhaust holes.

Preferably: and the inner cavity of the rotary valve is positioned among the plurality of second air inlet holes and is provided with an oblong valve hole corresponding to the first air inlet hole.

Preferably: the valve group further comprises a driving connecting hole, a driving mechanism is fixedly connected to the outer side of the pipeline, and the output end of the driving mechanism is connected with the driving connecting hole.

Preferably: and delay channels are arranged between channels formed between the exhaust holes and the second air inlet holes.

Preferably: the primary heat regenerator performs reciprocating motion through an external driving mechanism, and the secondary heat regenerator is connected with the primary heat regenerator and driven to perform reciprocating motion together.

The invention also provides a JT/GM refrigerator precooled by a planar seal valve and a regenerator and a refrigeration method, which are characterized by comprising the following steps: high-pressure helium gas provided by a compressor enters an inner cavity of a pipeline and is controlled by a valve bank, when the valve bank is opened, the high-pressure helium gas enters an inner cavity of a primary heat regenerator to carry out adiabatic expansion, a first refrigeration effect is generated, the temperature of gas after the adiabatic expansion is reduced, and the generated refrigerating capacity is reserved; the gas with reduced temperature enters the inner cavity of the secondary heat regenerator, and the secondary heat regenerator and the primary heat regenerator are connected together through a pipeline and synchronously perform reciprocating motion, so that the gas entering the inner cavity of the secondary heat regenerator can perform adiabatic expansion again to generate a secondary refrigeration effect; and a part of low-temperature gas passing through the secondary refrigeration effect is conveyed from the inner cavity of the secondary regenerator to the primary regenerator through a pipeline and then returns to the inner cavity of the valve bank, the other part of helium gas with lower temperature enters the inner cavity of the throttling refrigerator, a third-level refrigeration effect is generated in the inner cavity of the throttling refrigerator, the gas coming out of the inner cavity of the throttling refrigerator is conveyed to the inner cavity of the buffer tank through the valve bank, and the gas returns to the inner cavity of the compressor after being buffered in the inner cavity of the buffer tank.

The invention has the advantages that: the gas is directly precooled by the refrigerating capacity generated by the refrigeration of the heat regenerator, an external precooling component is eliminated, and the structure is integrated into a set of equipment, so that the equipment is more compact;

the gas conveying channels are integrated by the valve group, six channels are arranged to form a serial connection mode, and a delay channel is arranged in the serial connection process of the channels; the delay channel has self-closing function, and effectively generates pressure reduction effect on gas, thereby generating refrigeration effect; the gas precooled by the heat regenerator is subjected to JT refrigeration cycle, so that lower temperature can be obtained, and the practicability of the device is effectively improved.

Drawings

FIG. 1 is a schematic plane view of a JT/GM refrigerator with a planar sealing valve and a regenerator for precooling according to an embodiment of the present invention;

FIG. 2 is a perspective view of a partial structure of a JT/GM refrigerator employing a planar sealing valve and a regenerator for precooling in accordance with an embodiment of the present invention;

FIG. 3 is a perspective view of a partial structure of a JT/GM refrigerator employing a planar sealing valve and a regenerator for precooling in accordance with an embodiment of the present invention;

FIG. 4 is a partial front view of a JT/GM refrigerator employing a planar sealing valve and a regenerator for precooling in accordance with an embodiment of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 4 of a JT/GM refrigerator employing a planar sealing valve and regenerator for precooling in accordance with an embodiment of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 4 of a JT/GM refrigerator employing a planar sealing valve and regenerator for precooling in accordance with an embodiment of the present invention;

fig. 7 is a schematic diagram of the operation of a JT/GM refrigerator employing a planar sealing valve and regenerator for precooling in accordance with an embodiment of the present invention.

In the figure: 1-a compressor; 2-a pipeline; 3-gas storage cavity; 4-a valve bank; 41-a fixed valve; 411-a first intake hole; 412-a via; 413-vent hole; 42-rotary valve; 421-a second air inlet hole; 422-valve hole; 43-drive connection hole; 5-a drive mechanism; 6-first-stage heat regenerator; 7-a secondary heat regenerator; 8-throttling the refrigerator; 9-buffer tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the embodiment discloses a JT/GM refrigerator using a planar seal valve and a regenerator for precooling, which includes a compressor 1, a pipeline 2, a gas storage cavity 3, a valve bank 4, a driving mechanism 5, a primary regenerator 6, a secondary regenerator 7, a throttling refrigerator 8, and a buffer tank 9.

Referring to fig. 1, a compressor 1 is communicated with a gas storage cavity 3 through a pipeline 2, and a valve group 4 is installed in the inner cavity of the gas storage cavity 3.

Referring to fig. 2 to 6, the valve set 4 includes a fixed valve 41 and a rotary valve 42, the fixed valve 41 and the rotary valve 42 are both circular structures and are of an integrated structure, a first air inlet 411 is formed at the rear end of the fixed valve 41, the first air inlet 411 is communicated with the rotary valve 42, at least one through hole 412 is formed at each of two sides of the fixed valve 41, three exhaust holes 413 are distributed on the circumference of the inner cavity of the fixed valve 41, and the through holes 412 are communicated with the exhaust holes 413;

the inner cavity of the rotary valve 42 is provided with oblong valve holes 422 corresponding to the first air inlet holes 411 between the plurality of second air inlet holes 421, and the surface phase angles of the rotary valve 42 are provided with the second air inlet holes 421 corresponding to the air outlet holes 413.

In this embodiment, the oblong valve hole 422 in the inner cavity of the rotary valve 42 and the three through holes 412 distributed on the circumference of the rotary valve 42 are combined into three air inlet channels, and then three second air inlet holes 421 at the surface phase angle of the rotary valve 42 and the three through holes 412 are combined into three exhaust channels, so that six channels are formed by integration and are connected in series;

in this embodiment, the fixed valve 41 is kept stationary, the rotary valve 42 performs rotation movement, six different passages are sequentially opened and closed to form a delay passage, and the air inlet passage is opened and closed in a set time according to different designed angle directions, so that the delay passage provides a self-closing function, the pressure reduction effect on the gas is effectively achieved, and the practicability of the device is greatly improved.

In this embodiment, the valve set 4 further includes a driving connection hole 43, the outer side of the air distribution chamber 3 is connected to a driving mechanism 5, and the output end of the driving mechanism 5 is connected to a driving connection hole 46, so as to drive the valve to move periodically.

Referring to fig. 1, a valve group 4 is communicated with a primary heat regenerator 6 through a pipeline 2, and the lower end of the primary heat regenerator 6 is connected with a secondary heat regenerator 7 through the pipeline 2.

In this embodiment, the primary heat regenerator 6 performs reciprocating motion by an external driving mechanism, and the secondary heat regenerator 7 is connected to the primary heat regenerator 6 and driven to perform reciprocating motion, thereby effectively improving the refrigeration effect of the device.

Referring to fig. 1, the lower end of a secondary heat regenerator 7 is communicated with a throttling refrigerator 8 through a pipeline 2, a valve group 4 is connected with a buffer tank 9 through the pipeline 2, and the lower end of the buffer tank 9 is communicated with a compressor 1 through the pipeline 2.

In this embodiment, when the valve group 4 is opened, the primary heat regenerator 6, the throttling refrigerator 8 and the buffer tank 9 are all communicated with the gas storage cavity 3, and when the valve group 4 is closed, the primary heat regenerator 6, the throttling refrigerator 8 and the buffer tank 9 are all separated from the gas storage cavity 3 and are disconnected

The method for refrigerating by using the refrigerating machine comprises the following steps: high-pressure helium gas provided by a compressor 1 enters an inner cavity of a pipeline 2 and is controlled by a valve group 4, when the valve group 4 is opened, the high-pressure helium gas enters an inner cavity of a primary heat regenerator 6 to carry out adiabatic expansion, a first refrigeration effect is generated, the temperature of gas after adiabatic expansion is reduced, and the generated refrigerating capacity is reserved; the gas with reduced temperature enters the inner cavity of the secondary heat regenerator 7, and the secondary heat regenerator 7 and the primary heat regenerator 6 are connected together through the pipeline 2 and synchronously perform reciprocating motion, so that the gas entering the inner cavity of the secondary heat regenerator 7 can perform adiabatic expansion again to generate a secondary refrigeration effect; and a part of low-temperature gas passing through the secondary refrigeration effect is conveyed from the inner cavity of the secondary regenerator 7 to the primary regenerator 6 through the pipeline 2 and then returns to the inner cavity of the valve bank 4, the other part of helium gas with lower temperature enters the inner cavity of the throttling refrigerator 8, a third-level refrigeration effect is generated in the inner cavity of the throttling refrigerator 8, the gas coming out of the inner cavity of the throttling refrigerator 8 is conveyed to the inner cavity of the buffer tank 9 through the valve bank 4, and the gas returns to the inner cavity of the compressor 1 after being buffered in the inner cavity of the buffer tank 9.

The working principle is as follows: referring to fig. 7, by starting the compressor 1, high-pressure helium enters the inner cavity of the gas storage cavity 3 through the pipeline 2, and then the valve bank 4 is opened by the starting driving mechanism 5, the high-pressure helium received from the inner cavity of the compressor 1 sequentially passes through the first air inlet 411, the exhaust hole 413 and the second air inlet 421 to enter the inner cavity of the primary heat regenerator 6, so as to perform adiabatic expansion and generate refrigeration capacity, because the primary heat regenerator 6 is connected with the secondary heat regenerator 7, the driving mechanism outside the primary heat regenerator 6 drives the secondary heat regenerator 7 to synchronously perform reciprocating motion, so as to retain the generated refrigeration capacity, effectively cool the next incoming high-pressure normal-temperature helium into high-pressure low-temperature helium by the refrigeration capacity retained by the heat regenerator, after the high-pressure low-temperature helium is adiabatically expanded, lower-temperature refrigeration capacity can be generated, and meanwhile, a part of low-temperature gas is conveyed from the inner cavity of the secondary heat regenerator 7 through the pipeline 2 to the primary heat regenerator 6 and then returns to the valve bank 4, the other part of helium with lower temperature enters the inner cavity of the throttling refrigerator 8, a third-stage refrigeration effect is generated in the inner cavity of the throttling refrigerator 8, gas coming out of the inner cavity of the throttling refrigerator 8 is conveyed to the inner cavity of the buffer tank 9 through the valve bank 4, and the gas returns to the inner cavity of the compressor 1 after being buffered in the inner cavity of the buffer tank 9, so that the refrigeration efficiency is effectively improved, meanwhile, the effective refrigeration capacity is improved, and the practicability of the device is greatly improved. Can effectively reduce the pressure of the gas, thereby generating refrigeration effect and effectively improving the practicability of the equipment.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.