Rapid refrigeration type throttling refrigerator

Abstract

The utility model discloses a rapid refrigeration type throttling refrigerator which comprises a bottom flange, an air inlet is formed in the bottom of the bottom flange, a cover plate is arranged at the bottom of the air inlet, the top of the cover plate is connected with a rubber plug, the rubber plug is inserted into the air inlet, and a high-pressure air pipe connector is inserted into the middle of the cover plate. The top of the high-pressure air pipe connector extends into the air inlet. On one hand, the rubber plug on the cover plate is inserted into the air inlet to form a reliable sealing barrier, gas leakage and impurity invasion are prevented, refrigeration efficiency is guaranteed, service life is prolonged, and maintenance cost is reduced; on the other hand, a one-way ventilation mechanism in the high-pressure air pipe connector is ingeniously designed, one-way flowing of air is accurately controlled, internal pressure is stabilized, and refrigeration stability and reliability are improved; in addition, the cover plate and the air inlet form a convenient installation system through a fixing plate, a threaded cylinder, a threaded rod and a rotating handle, installation is simplified, time is shortened, labor cost is reduced, disassembly and maintenance are convenient, and the overall use convenience of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to throttling refrigerator technical field, especially in quick refrigeration type throttling refrigerator. BACKGROUND

[0002] In the modern industry and science and technology field, the refrigeration technology plays a pivotal role, is widely used in such as electronic equipment cooling, low temperature physics experiment, aerospace thermal control and many key scenes. Along with the increasingly fine and efficient demand of low temperature environment of each industry, the traditional throttling refrigerator gradually exposes some limitations.

[0003] The traditional throttling refrigerator often has difficulty in considering high efficiency sealing and convenient installation in the air inlet sealing link. The sealing mode generally adopted is either poor sealing effect, which easily leads to gas leakage, so that the amount of gas participating in refrigeration is insufficient, directly affecting the refrigeration efficiency, or complex structure, cumbersome installation and maintenance process, consuming a lot of manpower and material resources, increasing the overall cost and downtime. Moreover, when facing complex working environment, foreign impurities are easy to enter the internal part of the refrigerator through the tiny gap of the air inlet part. After accumulation, the impurities will adhere to the surface of the key components of the refrigerator, interfere with the heat exchange process, reduce the refrigeration performance, and even cause component wear and corrosion, shorten the service life of the refrigerator. Furthermore, the traditional throttling refrigerator is weak in controlling the flow direction of gas. When the air inlet stops or the gas pressure fluctuates, the gas in the internal part of the refrigerator is easy to appear backflow phenomenon, which not only destroys the original stable pressure environment, makes the refrigeration process difficult to maintain in the best state, but also may cause a series of chain reactions, such as temperature rising of the cooled area, uneven distribution of refrigeration medium, further affecting the stability and reliability of the refrigeration effect.

[0004] Therefore, we propose a quick refrigeration type throttling refrigerator. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a quick refrigeration type throttling refrigerator, in order to prevent gas leakage, foreign impurities intrusion, gas backflow and other problems, so as to improve the refrigeration efficiency, the stability and reliability of the refrigeration performance, prolong the service life of the refrigerator, which can effectively solve the problems in the background art.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A quick refrigeration type throttling refrigerator, comprising a bottom flange, the bottom of the bottom flange is provided with an air inlet, the bottom of the air inlet is provided with a cover plate, the top of the cover plate is connected with a rubber plug, the rubber plug is inserted into the inside of the air inlet, a high pressure gas pipe interface is inserted into the middle of the cover plate, the top of the high pressure gas pipe interface extends to the inside of the air inlet.

[0008] The high-pressure gas pipe interface is provided with a one-way ventilation mechanism, the one-way ventilation mechanism comprises a tension spring support arranged on the inner wall of the high-pressure gas pipe interface, a one-way blocking ring is arranged above the tension spring support on the inner wall of the high-pressure gas pipe interface, a central ring hole is formed in the center of the one-way blocking ring, a one-way blocking ball is movably arranged above the one-way blocking ring, the diameter of the one-way blocking ball is larger than the diameter of the central ring hole, and a reset tension spring is fixedly connected to the top end of the tension spring support, and the top end of the reset tension spring is fixedly connected with the one-way blocking ball.

[0009] By adopting the above technical scheme, the rubber plug on the cover plate is inserted into the air inlet, which plays a sealing role; on the one hand, it can prevent gas from leaking out of the gap between the air inlet and the cover plate, ensuring that as much gas as possible enters the refrigerator for refrigeration work; on the other hand, it can also prevent external impurities from entering the air inlet through the gap, avoiding adverse effects on the internal structure and working process of the refrigerator.

[0010] When high-pressure gas enters the air inlet through the high-pressure gas pipe interface, the gas pressure acts on the one-way blocking ball, and since the gas pressure is greater than the tension of the reset tension spring, the one-way blocking ball moves upward, the reset tension spring is stretched, and the one-way blocking ball leaves the central ring hole on the one-way blocking ring, so that the gas passage is opened. High-pressure gas can smoothly pass through the central ring hole and then enter the air inlet and finally enter the refrigerator for refrigeration process.

[0011] When the air inlet process stops, that is, there is no gas input or the gas pressure is reduced on one side of the high-pressure gas pipe interface, the reset tension spring will play a role, and since there is no continuous high-pressure gas to push the one-way blocking ball, the tension of the reset tension spring will make the one-way blocking ball move downward, and the one-way blocking ball returns to the one-way blocking ring and blocks the central ring hole. Because the diameter of the one-way blocking ball is greater than the diameter of the central ring hole, the gas in the refrigerator can be effectively prevented from flowing back through the high-pressure gas pipe interface, ensuring the one-way nature of the gas flow direction in the refrigerator, which helps to maintain the pressure environment and working state in the refrigerator.

[0012] Further, the cover plate is welded with a fixing plate on both sides, and a threaded cylinder is welded on the outer wall of the air inlet.

[0013] By adopting the above technical scheme, the fixing plates on both sides of the cover plate and the threaded cylinders on the outer wall of the air inlet are used for connecting and fixing the parts.

[0014] Further, threaded rods are threadedly connected between the two threaded cylinders and the fixing plates, and a handle is welded to the bottom of each threaded rod.

[0015] By adopting the technical scheme, the bolt is threaded through the mounting hole on the fixing plate and then is screwed with the threaded cylinder, the fixing plate gradually approaches the threaded cylinder by rotating the bolt, and the cover plate is tightly fixed at the bottom of the air inlet.

[0016] Further, the top of the bottom flange is provided with a mandrel, and the outer wall of the mandrel is wound with a finned tube.

[0017] By adopting the technical scheme, when the refrigerator works, the gas flows in the finned tube and is refrigerated, the finned tube is wound on the outer wall of the mandrel, so that the finned tube is in close contact with the mandrel, and due to the temperature drop of the gas in the finned tube, a temperature difference is generated with the mandrel, according to the heat conduction principle, heat is transferred from the high-temperature side of the mandrel to the low-temperature gas in the finned tube, which helps to further reduce the temperature of the mandrel and enables the gas in the finned tube to absorb more heat, thereby enhancing the refrigeration effect.

[0018] The mandrel provides a support structure for the finned tube, winding the finned tube on the mandrel can make the structure of the finned tube more stable, preventing displacement or damage of the finned tube due to factors such as gas flow and vibration during operation; at the same time, the winding mode of the finned tube increases its length in a limited space, which also increases the heat exchange area with the external environment including the mandrel, and more heat exchange area means that heat exchange can be carried out more efficiently, which is conducive to rapid refrigeration of the refrigerator.

[0019] Further, the middle part of the finned tube is provided with a throttling hole, and the air inlet is in communication with two ports of the finned tube.

[0020] By adopting the technical scheme, when high-pressure gas enters from the air inlet, it will be divided into two ports of the finned tube, and the finned tube provides a channel for the flow of gas.

[0021] When the gas flows in the finned tube, the throttling hole in the middle part plays a key throttling role, according to the Joule-Thomson effect, when the gas passes through the throttling hole, the pressure of the gas will suddenly drop, and since the gas is in an isenthalpic condition, its temperature will also drop; at the same time, the structure of the finned tube can increase the heat exchange area of the gas with the outside world; when the temperature of the gas is reduced, it can exchange heat with the surrounding environment through the tube wall and fins of the finned tube, further enhancing the refrigeration effect, and finally realizing rapid refrigeration.

[0022] Further, the finned tube is provided with a sealed shell, and the sealed shell is similar in shape to the mandrel.

[0023] By adopting the technical scheme, the sealing shell is wrapped outside the finned tube, plays a heat preservation role, in the refrigeration process, the gas temperature in the finned tube is reduced, and the temperature around the finned tube is also lower than the ambient temperature, if there is no sealing shell, external heat is easy to be transmitted to the surrounding of the finned tube through convection, radiation and other modes, and the refrigeration process is disturbed, and the sealing shell can effectively reduce the incoming of external heat, isolate the low-temperature region from the external environment, maintain the low-temperature environment in the finned tube, and the refrigeration effect is maintained.

[0024] The sealing shell is similar in shape to the mandrel, which helps to guide the gas to flow along a certain path in the space between the finned tube and the sealing shell, and after the gas is refrigerated in the finned tube, the low-temperature gas can be more fully exchanged with the finned tube under the limitation of the sealing shell, the gas can circulate along the gap between the sealing shell and the finned tube, so that the heat exchange is more uniform and sufficient, and the refrigeration effect is further optimized, and the situation of local overhigh or overlow temperature is also reduced.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] (1) The rubber plug on the cover plate is inserted into the air inlet, forming a reliable sealing barrier, which not only effectively prevents gas leakage from the gap between the air inlet and the cover plate, ensures sufficient amount of gas participating in refrigeration, maximizes refrigeration efficiency, but also effectively blocks the intrusion of external impurities, avoids the adhesion of impurities to key components affecting heat exchange, and shortens the service life of the refrigerator due to wear and corrosion, ensures long-term stable operation of the refrigerator, reduces maintenance cost and frequency.

[0027] (2) The one-way air passage mechanism in the high-pressure gas pipe interface is designed ingeniously, when high-pressure gas is input, the gas pressure overcomes the tension of the reset holding spring, pushes the one-way plug ball to open the gas passage, so that the gas can smoothly enter the refrigerator, when the air inlet stops or the pressure decreases, the reset holding spring quickly pulls back the one-way plug ball to block the center hole, preventing backflow of the gas, so as to accurately control the one-way flow of the gas, stabilize the pressure environment in the refrigerator, ensure that the refrigeration process is in the best state, improve the stability and reliability of the refrigeration effect, and meet the high-precision control demand for low-temperature environment.

[0028] (3) The utility model discloses a quick refrigeration type throttling refrigerator, the fixed plate welding on both sides of the cover plate is connected with the threaded cylinder welding on the lower part of the outer wall of the air inlet, and the matched threaded rod and the handle are jointly constituted as the convenient installation system, the threaded rod with the handle is rotated to be connected with the threaded cylinder, and the fixed plate is pulled to the threaded cylinder, and the cover plate is fixed with the air inlet. This design simplifies the installation process, does not need professional complex tools, greatly shortens the installation time, reduces the labor cost, is also convenient for subsequent disassembly maintenance, improves the overall use convenience of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structure schematic view of the utility model discloses a quick refrigeration type throttling refrigerator.

[0030] Figure 2 It is a quick refrigeration type throttling refrigerator of the utility model Figure 1 Enlarged view at A.

[0031] Figure 3 It is a one-way ventilation mechanism structure schematic view of the utility model discloses a quick refrigeration type throttling refrigerator.

[0032] In the drawing: 1, bottom flange;2, air inlet;3, high-pressure gas pipe interface;4, tension spring support;5, one-way plug ring;6, center ring hole;7, one-way plug ball;8, reset tension spring;9, cover plate;10, rubber plug;11, threaded cylinder;12, fixed plate;13, threaded rod;14, handle;15, mandrel;16, finned tube;17, sealing shell;18, throttling hole. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0034] In order to prevent gas leakage, external impurities intrusion, gas backflow and other problems, thereby improving the stability and reliability of refrigeration efficiency and refrigeration performance, prolonging the service life of the refrigerator, such as Figure 1 、 Figure 2 、 Figure 3 As shown in a kind of quick refrigeration type throttling refrigerator, including bottom flange 1, the bottom of the bottom flange 1 is provided with air inlet 2, the bottom of the air inlet 2 is provided with cover plate 9, the top of the cover plate 9 is connected with rubber plug 10, the rubber plug 10 is inserted in the inside of air inlet 2, the middle part of the cover plate 9 is inserted with high-pressure gas pipe interface 3, the top of the high-pressure gas pipe interface 3 extends to the inside of air inlet 2;

[0035] The high-pressure gas pipe interface 3 is provided with a one-way ventilation mechanism, the one-way ventilation mechanism comprises a tension spring support 4 arranged on the inner wall of the high-pressure gas pipe interface 3, a one-way blocking ring 5 is arranged on the inner wall of the high-pressure gas pipe interface 3 and above the tension spring support 4, a center ring hole 6 is formed in the center position of the one-way blocking ring 5, a one-way blocking ball 7 is movably arranged above the one-way blocking ring 5, the diameter of the one-way blocking ball 7 is larger than the diameter of the center ring hole 6, and a reset tension spring 8 is fixedly connected to the top end of the tension spring support 4, and the top end of the reset tension spring 8 is fixedly connected with the one-way blocking ball 7.

[0036] In use, the rubber plug 10 on the cover plate 9 is inserted into the air inlet 2, which plays a sealing role; on the one hand, it can prevent gas from leaking out of the gap between the air inlet 2 and the cover plate 9, so as to ensure that as much gas as possible enters the refrigerator for refrigeration work; on the other hand, it can also prevent external impurities from entering the air inlet 2 through the gap, so as to avoid adverse effects on the internal structure and working process of the refrigerator.

[0037] When high-pressure gas enters the air inlet 2 through the high-pressure gas pipe interface 3, the gas pressure acts on the one-way blocking ball 7, and since the gas pressure is greater than the tension of the reset tension spring 8, the one-way blocking ball 7 moves upward, the reset tension spring 8 is stretched, and the one-way blocking ball 7 leaves the center ring hole 6 on the one-way blocking ring 5, so that the gas passage is opened. High-pressure gas can smoothly pass through the center ring hole 6 and then enter the air inlet 2 and finally enter the refrigerator for refrigeration process.

[0038] When the air inlet process stops, that is, there is no gas input or the gas pressure is reduced on one side of the high-pressure gas pipe interface 3, the reset tension spring 8 will play a role, and since there is no longer a continuous high-pressure gas to push the one-way blocking ball 7, the tension of the reset tension spring 8 will make the one-way blocking ball 7 move downward, and the one-way blocking ball 7 returns to the one-way blocking ring 5 and blocks the center ring hole 6. Since the diameter of the one-way blocking ball 7 is greater than the diameter of the center ring hole 6, the gas in the refrigerator can be effectively prevented from flowing back through the high-pressure gas pipe interface 3, so as to ensure the one-way nature of the gas flow direction in the refrigerator, which helps to maintain the pressure environment and working state in the refrigerator.

[0039] As shown in Figure 1 , Figure 2 The utility model also includes that the both sides of cover plate 9 are welded with fixed plate 12, and the lower part of the outer wall of air inlet 2 is welded with threaded cylinder 11.

[0040] In use, the fixed plate 12 on both sides of the cover plate 9 and the threaded cylinder 11 on the lower part of the outer wall of the air inlet 2 are used for connecting and fixing the parts.

[0041] As shown in Figure 1 , Figure 2As shown, the utility model also includes, two the threaded connection between threaded cylinder 11 and fixed plate 12 have threaded rod 13, and the bottom of two threaded rod 13 all are welded with handle 14.

[0042] In use, bolt passes through the mounting hole on fixed plate 12, then with threaded cylinder 11 carries out threaded connection, by rotating bolt, make fixed plate 12 gradually close threaded cylinder 11, thereby tightly fixed in the bottom of air inlet 2 with cover plate 9.

[0043] Exemplary, as Figure 1 As shown, the utility model also includes, the top of bottom flange 1 is provided with mandrel 15, the outer wall of mandrel 15 is wound with finned tube 16.

[0044] In use, when the refrigerator works, gas flows in finned tube 16 and is refrigerated, finned tube 16 is wound on the outer wall of mandrel 15, so that finned tube 16 is in close contact with mandrel 15, because the temperature of gas in finned tube 16 reduces, will produce temperature difference with mandrel 15, according to heat conduction principle, heat will be transferred from the high temperature side mandrel 15 to the low temperature gas in the low temperature side finned tube 16, this heat conduction process helps to further reduce the temperature of mandrel 15, and makes the gas in finned tube 16 can absorb more heat, thereby enhancing the refrigeration effect;

[0045] Mandrel 15 provides support structure for finned tube 16, winding finned tube 16 on mandrel 15 can make the structure of finned tube 16 more stable, prevent its displacement or damage in the working process because of gas flow, vibration and other factors;Meanwhile, the winding mode of finned tube 16 increases its length in limited space, so as to increase the heat exchange area with external environment including mandrel 15, more heat exchange area means that heat exchange can be carried out more efficiently, which is beneficial to the rapid refrigeration of refrigerator.

[0046] Exemplary, as Figure 1 As shown, the utility model also includes, the middle part of finned tube 16 is equipped with throttle hole 18, and the two ports of air inlet 2 and finned tube 16 are communicated.

[0047] In use, when high-pressure gas enters from air inlet 2, will be shunted into the two ports of finned tube 16, and finned tube 16 provides a channel for the flow of gas;

[0048] When the gas flows in the finned tube 16, the throttling hole 18 in the middle plays a key throttling role, according to the Joule-Thomson effect, when the gas passes through the throttling hole 18, the pressure of the gas will suddenly drop, and since the gas is in an isenthalpic condition, its temperature will also decrease; at the same time, the structure of the finned tube 16 can increase the heat exchange area of the gas with the outside world; after the temperature of the gas decreases, it can exchange heat with the surrounding environment through the tube wall and the fins of the finned tube 16, further enhancing the refrigeration effect, and ultimately achieving rapid refrigeration.

[0049] As shown in the example, Figure 1 As shown in the example,

[0050] In use, the sealing shell 17 is wrapped outside the finned tube 16, playing a heat preservation role, during the refrigeration process, the temperature of the gas in the finned tube 16 decreases, and the temperature around it is also lower than the ambient temperature, if there is no sealing shell 17, external heat is easily transferred to the finned tube 16 through convection, radiation and other ways, interfering with the refrigeration process, and the sealing shell 17 can effectively reduce the entry of external heat, isolate the low-temperature area from the external environment, and maintain the low-temperature environment inside the finned tube 16, so that the refrigeration effect is maintained;

[0051] The sealing shell 17 is similar in shape to the mandrel 15, which helps to guide the gas to flow in a certain path in the space between the finned tube 16 and the sealing shell 17, after the gas is cooled in the finned tube 16, the low-temperature gas can more fully exchange heat with the finned tube 16 under the restriction of the sealing shell 17, the gas may circulate along the gap between the sealing shell 17 and the finned tube 16, making the heat exchange more uniform and sufficient, further optimizing the refrigeration effect, and also helping to reduce the situation of local temperature being too high or too low.

[0052] It should be noted that the utility model is a kind of rapid refrigeration type throttling refrigerator, firmly inserts rubber plug 10 in the inside of air inlet 2, the fixed plate 12 of the both sides of cover plate 9 is aligned with the threaded cylinder 11 of the lower part of the outer wall of air inlet 2, picks up threaded rod 13 with handle 14, and its one end is screwed into threaded cylinder 11, and passes through the mounting hole on fixed plate 12, by rotating handle 14, slowly tighten threaded rod 13, make fixed plate 12 gradually close to threaded cylinder 11, until cover plate 9 is tightly fixed at the bottom of air inlet 2, pay attention to uniformity in the process, avoid excessive tightening and cause component damage;

[0053] The high-pressure gas source is connected with the high-pressure gas pipe interface 3, the gas valve is opened, the high-pressure gas enters the high-pressure gas pipe interface 3, the gas pressure acts on the one-way plug ball 7, when the gas pressure is greater than the tension of the reset tension spring 8, the one-way plug ball 7 moves upwards, the gas passage is opened, the high-pressure gas enters the gas inlet 2 through the central ring hole 6, then is branched into two ports of the finned tube 16, the gas flows in the finned tube 16 to the middle throttling hole 18, the pressure is suddenly reduced, the temperature is reduced according to the Joule-Thomson effect, the low-temperature gas continues to flow in the finned tube 16, and heat exchange is carried out between the finned tube 16 and the environment and the mandrel 15 through the tube wall and the fin of the finned tube 16, so that rapid refrigeration is realized;

[0054] The high-pressure gas source valve is closed, the gas inlet process is stopped, the gas pressure on one side of the high-pressure gas pipe interface 3 is reduced, the reset tension spring 8 plays a role, pulls the one-way plug ball 7 to move downwards, and blocks the central ring hole 6, so that the gas in the refrigeration device is prevented from flowing back, and the pressure environment in the refrigeration device is maintained.

[0055] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A throttling refrigerator of the rapid cooling type comprising a bottom flange (1), characterized in that, The bottom of the bottom flange (1) is provided with an air inlet (2), the bottom of the air inlet (2) is provided with a cover plate (9), the top of the cover plate (9) is connected with a rubber plug (10), the rubber plug (10) is inserted into the inside of the air inlet (2), the middle of the cover plate (9) is inserted with a high-pressure gas pipe interface (3), the top of the high-pressure gas pipe interface (3) extends to the inside of the air inlet (2); The high-pressure gas pipe interface (3) is provided with a one-way ventilation mechanism, the one-way ventilation mechanism comprises a tension spring bracket (4) arranged on the inner wall of the high-pressure gas pipe interface (3), the inner wall of the high-pressure gas pipe interface (3) is provided with a one-way blocking ring (5) above the tension spring bracket (4), the center position of the one-way blocking ring (5) is provided with a center ring hole (6), the one-way blocking ring (5) is movably provided with a one-way blocking ball (7) above, the diameter of the one-way blocking ball (7) is greater than the diameter of the center ring hole (6), the top end of the tension spring bracket (4) is fixedly connected with a reset tension spring (8), and the top end of the reset tension spring (8) is fixedly connected with the one-way blocking ball (7).

2. The throttling refrigerator of claim 1, wherein: The cover plate (9) is welded with a fixed plate (12) on both sides, and the outer wall of the air inlet (2) is welded with a threaded cylinder (11) at the lower part.

3. The throttling pulsed tube refrigerator of claim 2, wherein: The threaded cylinder (11) is screwed with the fixed plate (12), and the bottom of the threaded rod (13) is welded with a handle (14).

4. The throttling pulsed tube refrigerator of claim 1, wherein: The top of the bottom flange (1) is provided with a mandrel (15), and the outer wall of the mandrel (15) is wound with a finned tube (16).

5. The throttling refrigerator of claim 4, wherein: The middle of the finned tube (16) is provided with a throttling hole (18), and the air inlet (2) is connected with two ports of the finned tube (16).

6. The throttling refrigerator of claim 5, wherein: The outer part of the finned tube (16) is provided with a sealed shell (17), and the sealed shell (17) is similar in shape to the mandrel (15).

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