Vortex jet cooling device

Abstract

The utility model belongs to the technical field of vortex cooling pipes, and provides a vortex jet cooling device which comprises a flow guide pipe, a vortex generating mechanism, a cold air pipe, a hot air pipe and a hot air flow adjusting mechanism. The flow guide pipe is provided with the vortex generating mechanism, the vortex generating mechanism is communicated with an air inlet pipe, and the vortex generating mechanism is used for introducing air entering from the air inlet pipe and rotating in the flow guide pipe to generate vortex; one end of the flow guide pipe is connected with the cold air pipe, the other end of the flow guide pipe is connected with the hot air pipe through the hot air flow adjusting mechanism, and the hot air flow adjusting mechanism is used for adjusting the hot air flow; the hot air flow adjusting mechanism is used for adjusting the flow of hot air exhausted by the hot air pipe so as to balance the air proportion of the outer-layer high-temperature part and the inner-layer low-temperature part, flexible adjustment can be achieved according to real-time working conditions, and more application scenes can be met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vortex cooling pipe, concretely relates to a vortex jet cooling device. BACKGROUND

[0002] The vortex cooling pipe is a passive cooling device for realizing heat separation by utilizing vortex effect, and its core principle is to form vortex by high-speed rotation of air with pressure in a flow guide pipe, so that outer air becomes hot air flow due to friction and kinetic energy dissipation, and inner air becomes cold air flow due to expansion cooling, thereby realizing cold and hot separation. The traditional vortex cooling pipe usually adopts a hot end outlet structure with a fixed aperture, adjusts back pressure by limiting the hot air flow through area, but such structure has significant defects: the cold and hot flow rate ratio is fixed and cannot be dynamically adjusted according to real-time working conditions, resulting in low cooling efficiency in complex load or variable pressure gas source scenarios; the vortex intensity depends on fixed geometric parameters, and the gas source cleanliness and pressure stability are required to be harsh.

[0003] In the field of vacuum pumps, for the high-temperature gas discharged from the exhaust port, the existing cooling technologies include air cooling, liquid cooling system and traditional vortex cooling pipe. The traditional vortex cooling pipe has the advantages of low cost, easy implementation and convenient installation and maintenance, but in combination with the above content, the traditional vortex cooling pipe lacks a collaborative adjustment mechanism for cold and hot air flow, which cannot quickly respond to sudden temperature rise when the vacuum pump is running at high load, and is prone to overheating protection shutdown; when the load is low, there is excessive cooling or energy waste, and it is difficult to adapt to the differentiated heat dissipation needs of different scenarios.

[0004] Therefore, there is an urgent need for a vortex cooling device that can dynamically adjust the cold and hot flow distribution, efficiently utilize the waste heat of the vacuum pump and adapt to complex working conditions. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a vortex jet cooling device to solve the problems in the prior art, and the technical scheme adopted by the utility model is:

[0006] A vortex jet cooling device, comprising a flow guide pipe, a vortex generating mechanism, a cold gas pipe, a hot gas pipe and a hot gas flow adjusting mechanism.

[0007] The vortex generating mechanism is arranged on the flow guide pipe, the vortex generating mechanism is connected with an air inlet pipe, and the vortex generating mechanism is used for introducing air entering the air inlet pipe and rotating to generate vortex in the flow guide pipe.

[0008] One end of the flow guide pipe is connected with the cold gas pipe, the other end of the flow guide pipe is connected with the hot gas pipe through the hot gas flow adjusting mechanism, and the hot gas flow adjusting mechanism is used for adjusting the hot gas flow.

[0009] Further, the vortex generating mechanism comprises a ring-shaped shell and an inner cylinder, an inner wall surface of the ring-shaped shell is provided with a ring-shaped groove, the inner cylinder is fixedly connected in the ring-shaped groove, the ring-shaped groove is arranged around the circumference of the inner cylinder, an annular chamber is formed between the outer side surface of the inner cylinder and the inner wall surface of the ring-shaped groove, the outer side surface of the ring-shaped shell is fixedly connected with the air inlet pipe, the air inlet pipe is communicated with the annular chamber, a plurality of inclined flow guide holes are arranged on the inner cylinder, and the inclined flow guide holes are used to make the air entering the inner cylinder rotate to generate vortex.

[0010] Further, one end of the ring-shaped shell is fixedly connected with the flow guide pipe, the other end of the ring-shaped shell is fixedly connected with the cold air pipe, the cold air pipe and the flow guide pipe are both communicated with the inside of the inner cylinder, and the cold air pipe, the flow guide pipe and the inner cylinder are coaxially arranged.

[0011] Further, one end of the cold air pipe located outside the inner cylinder is fixedly connected with a connecting head, the connecting head is fixedly connected with the ring-shaped shell, one end of the cold air pipe penetrates through the inside of the inner cylinder, and there is an annular space between the cold air pipe and the inner cylinder.

[0012] Further, an arc-shaped baffle is arranged in the annular chamber, the arc-shaped baffle is attached to the outer side surface of the inner cylinder, the arc-shaped baffle penetrates out of the ring-shaped shell and is rotatably connected with a screw rod, the screw rod is threadedly connected with a fixed ring, the fixed ring is fixedly connected on the flow guide pipe, a plurality of flow guide holes are arranged, and the arc-shaped baffle is used to cover a part of the flow guide holes to adjust the air inlet flow rate of the air inlet pipe.

[0013] Further, the hot gas flow rate adjusting mechanism comprises a flow blocking head, a first arc-shaped hole, a second arc-shaped hole and a baffle;

[0014] The hot gas pipe is rotatably sleeved on the end portion of the flow guide pipe, the flow blocking head is fixedly connected on the inside of the end portion of the flow guide pipe, the flow blocking head has a conical structure, the end with a smaller diameter of the flow blocking head faces the inside of the flow guide pipe, and the first arc-shaped hole is arranged on the outer side edge of the flow blocking head.

[0015] The baffle is fixedly connected in the hot gas pipe, the baffle abuts against the end surface of the flow guide pipe, the second arc-shaped hole is arranged on the baffle, and the hot gas pipe is used to rotate to make the first arc-shaped hole and the second arc-shaped hole coincide or stagger, so as to adjust the hot gas flow rate.

[0016] Further, the hot gas pipe is provided with a heat exchange coil.

[0017] Further, the hot gas pipe is fixedly connected with a flow guide base, the flow guide base is located on the side of the baffle away from the flow guide pipe, the flow guide base is a hollow structure, the inner wall surface of the hollow part is a funnel structure, and the flow guide base, away from the baffle, is provided with the hot gas pipe.

[0018] The utility model has the following beneficial effects: the utility model utilizes the hot gas flow adjusting mechanism to adjust the hot gas flow discharged by the hot gas pipe, the purpose is to balance the air proportion of the outer high-temperature part and the inner low-temperature part, under the cold gas temperature requirement of the cold gas pipe discharge, the more cold gas is discharged as far as possible to improve the cooling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic diagram of a vortex jet cooling device of the utility model;

[0020] Figure 2 It is Figure 1 The enlarged schematic view of A in the middle;

[0021] Figure 3 It is the first arc-shaped hole distribution relationship schematic diagram. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with Figures 1-3 The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with

[0023] As Figure 1 A vortex jet cooling device, comprising a flow guide pipe 4, a vortex generating mechanism, a cold gas pipe 1, a hot gas pipe 5 and a hot gas flow adjusting mechanism;

[0024] The vortex generating mechanism is arranged on the flow guide pipe 4, the vortex generating mechanism is communicated with the air inlet pipe 2, and the vortex generating mechanism is used for introducing the air entering the air inlet pipe 2 and rotating to generate vortex in the flow guide pipe 4.

[0025] One end of the flow guide pipe 4 is connected with the cold gas pipe 1, and the other end of the flow guide pipe 4 is connected with the hot gas pipe 5 through the hot gas flow adjusting mechanism, and the hot gas flow adjusting mechanism is used for adjusting the hot gas flow.

[0026] The utility model discloses a vortex cooling pipe is used to the cooling of vacuum pump, and the cooling efficiency is improved. The utility model discloses a vortex cooling pipe, which comprises a ring-shaped shell 3, an inner cylinder 10, an air inlet pipe 2, a guide pipe 4, a cold air pipe 1 and a hot air pipe 5.

[0027] The utility model discloses a hot gas flow adjusting mechanism is used to adjust the hot gas flow of hot air pipe 5, and its purpose is to balance the air proportion of outer high temperature part and inner low temperature part, and under the cold air temperature requirement of cold air pipe 1 discharge, the more cold air is discharged as far as possible, to improve cooling efficiency.

[0028] Further, the vortex generating mechanism includes an annular housing 3 and an inner cylinder 10, the inner wall surface of the annular housing 3 is provided with an annular groove, the inner cylinder 10 is fixedly connected in the annular groove, the annular groove is arranged around the circumference of the inner cylinder 10, the outer side surface of the inner cylinder 10 and the inner wall surface of the annular groove form an annular chamber, the outer side surface of the annular housing 3 is fixedly connected with the air inlet pipe 2, the air inlet pipe 2 communicates with the annular chamber, a plurality of inclined flow guide holes 9 are arranged on the inner cylinder 10, and the inclined flow guide holes 9 are used to make the air entering the inner cylinder 10 rotate to generate vortex.

[0029] The flow guide holes 9 are inclined relative to the axis of the inner cylinder 10, and after the air enters the inner cylinder 10 through the flow guide holes 9, it rotates along the inner wall surface of the inner cylinder 10, thereby generating vortex.

[0030] Further, one end of the annular housing 3 is fixedly connected with the guide pipe 4, the other end of the annular housing 3 is fixedly connected with the cold air pipe 1, the cold air pipe 1 and the guide pipe 4 both communicate with the inside of the inner cylinder 10, and the cold air pipe 1, the guide pipe 4 and the inner cylinder 10 are coaxially arranged.

[0031] Further, one end of the cold air pipe 1 located outside the inner cylinder 10 is fixedly connected with a connecting head 11, the connecting head 11 is fixedly connected with the annular housing 3, one end of the cold air pipe 1 penetrates through the inside of the inner cylinder 10, and the cold air pipe 1 and the inner cylinder 10 have an annular gap therebetween.

[0032] The annular space between the cold air pipe 1 and the inner cylinder 10 can effectively avoid the backflow of hot air, effectively separate the outer high-temperature part and the inner low-temperature part, and make the air in the inner low-temperature part fully enter the cold air pipe 1. And the connecting part of the cold air pipe 1 and the connecting head 11 forms airtight air, so that the air entering the inner cylinder 10 through the flow guide hole 9 can only move along the annular space towards the flow guide pipe 4, promoting the formation of vortex.

[0033] Further, the annular chamber is provided with an arc-shaped baffle 12 which is attached to the outer side of the inner cylinder 10, the arc-shaped baffle 12 penetrates the annular shell 3 and is rotatably connected to a screw rod 14, the screw rod 14 is threadedly connected to a fixed ring 13, the fixed ring 13 is fixedly connected to the flow guide pipe 4, and the flow guide hole 9 is provided with a plurality of flow guide holes 9, and the arc-shaped baffle 12 is used to cover a part of the flow guide holes 9 to adjust the air inflow rate of the air inlet pipe 2.

[0034] The arc-shaped baffle 12 can be provided around the inner cylinder 10, the air pressure entering the air inlet pipe 2 is constant, so that the number of flow guide holes 9 connected to the inner cylinder 10 can be adjusted by the arc-shaped baffle 12, the effective air passing area is changed, and thus the air inflow rate of the inner cylinder 10 is adjusted.

[0035] When the air flow rate in the flow guide pipe 4 is too high, the vortex is excessively disturbed, the mixing of cold and hot gases is intensified, and the separation efficiency is reduced; when the flow rate is too low, the vortex intensity is insufficient, the separation interface is blurred, and the cold and hot energy exchange is insufficient. By adjusting the flow rate to the best optimization interval (usually corresponding to the Reynolds number range of the best separation efficiency), the maximum temperature difference (typical temperature difference can reach 30-50℃) can be realized at both ends of the flow guide pipe. The best optimization interval is determined by measuring the entering air temperature and the temperature difference of the discharged cold and hot air, and the best optimization interval can be obtained by repeatedly performing experiments on different numbers of flow guide holes 9 and measuring the above-mentioned temperatures.

[0036] And when adjusting the flow rate, adjust the hot gas flow rate with the hot gas flow rate adjusting mechanism, reduce the flow rate and increase the hot gas flow rate, increase the hot gas discharge, and reduce the cold gas proportion (suitable for energy saving or light cooling); increase the flow rate and reduce the hot gas flow rate: more air flow is forced to be discharged from the cold air pipe, and the cold gas proportion is increased (suitable for strong cooling demand); such dynamic distribution capability makes the utility model adapt to the cooling load change under different working conditions.

[0037] Further, the hot gas flow rate adjusting mechanism comprises a flow blocking head 8, a first arc-shaped hole 6, a second arc-shaped hole 16 and a baffle 15.

[0038] The hot air pipe 5 is rotatably sleeved on the end of the flow guide pipe 4, the inner side of the end of the flow guide pipe 4 is fixedly connected with the flow blocking head 8, the flow blocking head 8 is in a conical structure, the smaller-diameter end of the flow blocking head 8 is directed to the inside of the flow guide pipe 4, and the outer side edge portion of the flow blocking head 8 is provided with the first arc-shaped hole 6;

[0039] The baffle 15 is fixedly connected in the hot air pipe 5, the baffle 15 abuts against the end face of the flow guide pipe 4, the baffle 15 is provided with the second arc-shaped hole 16, and the hot air pipe 5 is used for rotating to make the first arc-shaped hole 6 and the second arc-shaped hole 16 coincide or stagger, so that the hot air flow is adjusted.

[0040] Specifically, a plurality of first arc-shaped holes 6 and second arc-shaped holes 16 can be arranged around the flow blocking head 8, the larger-diameter end of the flow blocking head 8 is fixedly connected to the inner side of the flow guide pipe 4, the outer side of the flow blocking head 8 is provided with an outer side edge portion, and the outer side edge portion is in a circular ring structure and wraps the large-diameter end of the flow blocking head 8. By rotating the hot air pipe 5, the size of the overlapping part of the first arc-shaped hole 6 and the second arc-shaped hole 16 is adjusted, and then the effective air passing area is changed. When the effective air passing area is reduced, more hot air in the outer layer of the high-temperature part is forced to enter the inner layer of the low-temperature part; when the effective air passing area is increased, more hot air in the outer layer of the high-temperature part is discharged.

[0041] Further, the heat exchange coil 7 is arranged in the hot air pipe 5.

[0042] Further, the flow guide seat 17 is fixedly connected in the hot air pipe 5, the flow guide seat 17 is located on the side, away from the flow guide pipe 4, of the baffle 15, the flow guide seat 17 is in a hollow structure, the inner wall surface of the hollow part of the flow guide seat 17 is in a funnel structure, and the hot air pipe 5 is arranged on the side, away from the baffle 15, of the flow guide seat 17.

[0043] The heat exchange coil 7 is used for waste heat recovery, which is prior art, the two ends of the heat exchange coil 7 can be connected with corresponding pipelines, pump bodies and heat exchange water tanks, so that the heat of hot air is transferred, and the function of waste heat recovery is realized. The inner diameter of the end, directed to the baffle 15, of the flow guide seat 17 is larger, and the inner wall surface of the hollow part of the flow guide seat 17 is arc-shaped, so as to guide air to pass through the heat exchange coil 7 and realize the function of effective heat exchange.

[0044] The above-described embodiments only describe the preferred modes of the present application, and do not limit the scope of the present application, and various deformations, modifications, changes and replacements of the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. An eddy current jet cooling device, characterized by, The device comprises a guide pipe (4), a vortex generating mechanism, a cold air pipe (1), a hot air pipe (5) and a hot air flow adjusting mechanism. The vortex generating mechanism is arranged on the guide pipe (4) and is connected with the air inlet pipe (2), and is used to introduce the air entering the air inlet pipe (2) and rotate to generate vortex in the guide pipe (4). One end of the guide pipe (4) is connected with the cold air pipe (1), and the other end of the guide pipe (4) is connected with the hot air pipe (5) through the hot air flow adjusting mechanism, and the hot air flow adjusting mechanism is used to adjust the hot air flow.

2. A vortex jet cooling device according to claim 1, wherein The vortex generating mechanism comprises an annular shell (3) and an inner cylinder (10), the inner wall surface of the annular shell (3) is provided with an annular groove, the inner cylinder (10) is fixedly connected in the annular groove, the annular groove is arranged around the circumference of the inner cylinder (10), an annular chamber is formed between the outer side surface of the inner cylinder (10) and the inner wall surface of the annular groove, the air inlet pipe (2) is fixedly connected to the outer side surface of the annular shell (3), the air inlet pipe (2) is connected with the annular chamber, a plurality of inclined guide holes (9) are arranged on the inner cylinder (10), and the inclined guide holes (9) are used to make the air entering the inner cylinder (10) rotate to generate vortex.

3. A vortex jet cooling device according to claim 2, wherein One end of the annular shell (3) is fixedly connected with the guide pipe (4), the other end of the annular shell (3) is fixedly connected with the cold air pipe (1), and the cold air pipe (1) and the guide pipe (4) are both connected with the inside of the inner cylinder (10), and the cold air pipe (1), the guide pipe (4) and the inner cylinder (10) are coaxially arranged.

4. A vortex jet cooling device according to claim 3, wherein One end of the cold air pipe (1) located outside the inner cylinder (10) is fixedly connected with a connecting head (11), the connecting head (11) is fixedly connected with the annular shell (3), one end of the cold air pipe (1) penetrates through the inside of the inner cylinder (10), and there is an annular space between the cold air pipe (1) and the inner cylinder (10).

5. A vortex jet cooling device according to claim 2, wherein An arc-shaped baffle (12) is arranged in the annular chamber, the arc-shaped baffle (12) is attached to the outer side surface of the inner cylinder (10), the arc-shaped baffle (12) penetrates out of the annular shell (3) and is rotatably connected with a screw rod (14), the screw rod (14) is threadedly connected with a fixed ring (13), the fixed ring (13) is fixedly connected on the guide pipe (4), a plurality of guide holes (9) are arranged, and the arc-shaped baffle (12) is used to cover a part of the guide holes (9) to adjust the air inlet flow rate of the air inlet pipe (2).

6. A vortex jet cooling device according to claim 1, wherein The hot air flow adjusting mechanism comprises a flow blocking head (8), a first arc-shaped hole (6), a second arc-shaped hole (16) and a baffle (15). The hot air pipe (5) is rotatably sleeved on the end of the guide pipe (4), the inside of the end of the guide pipe (4) is fixedly connected with the flow blocking head (8), the flow blocking head (8) is in a conical structure, the end with smaller diameter of the flow blocking head (8) faces the inside of the guide pipe (4), and the outside edge of the flow blocking head (8) is provided with the first arc-shaped hole (6). The baffle (15) is fixedly connected in the hot gas pipe (5), the baffle (15) abuts against the end face of the flow guide pipe (4), the second arc-shaped hole (16) is formed in the baffle (15), and the hot gas pipe (5) is used for rotating to make the first arc-shaped hole (6) and the second arc-shaped hole (16) coincide or stagger, so that the hot gas flow is adjusted.

7. A vortex jet cooling device according to claim 6, wherein The heat exchange coil (7) is arranged in the hot gas pipe (5).

8. A vortex jet cooling device according to claim 7, wherein The flow guide seat (17) is fixedly connected in the hot gas pipe (5), the flow guide seat (17) is located on the side, away from the flow guide pipe (4), of the baffle (15), the flow guide seat (17) has a hollow structure, the inner wall surface of the hollow part is in a funnel structure, and the hot gas pipe (5) is arranged on the side, away from the baffle (15), of the flow guide seat (17).

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