Magnetic suspension compressor direct expansion heat pump structure

Abstract

The utility model discloses a direct expansion heat pump structure of a magnetic suspension compressor, which belongs to the field of magnetic suspension compressors and comprises an air storage tank, supporting seats are symmetrically arranged at the bottom of the air storage tank, a motor is fixed on the upper surface of the air storage tank, a power shaft is arranged at the output end of the motor, and a compression pump body is fixed on the upper surface of the air storage tank. The end, away from the motor, of the power shaft is installed on the compression pump body, a boss is arranged on the upper surface of the air storage tank and arranged between the motor and the compression pump body, a protection box is fixed to the top of the boss, the power shaft penetrates through the protection box, and an electromagnetic block is connected below a magnetic suspension bearing in parallel. At the moment, an internal spring can drive a semi-ring supporting plate to move upwards so as to support the power shaft, the situation that the power shaft inclines downwards and collides due to loss of supporting force is prevented, on the contrary, after electrification, the semi-ring supporting plate moves downwards automatically, and rotation of the power shaft is prevented from being hindered.

Description

Technical Field

[0001] The utility model relates to the field of magnetic levitation compressors, and more specifically, to a direct expansion heat pump structure of a magnetic levitation compressor. Background Art

[0002] Direct expansion liquid supply uses the difference between the condensation pressure and the evaporation pressure generated by the work of the compressor in the system as the driving force to directly supply the high-pressure and high-temperature refrigerant liquid into the evaporator after reducing the pressure through a throttling device. The refrigerant liquid absorbs heat in the evaporator and evaporates into a low-temperature and low-pressure refrigerant gas. The gas is then compressed by the compressor into a high-temperature and high-pressure refrigerant gas, which is cooled into a high-temperature and high-pressure refrigerant liquid in the condenser to form a refrigeration cycle. Therefore, the most important component in the entire cycle system is the compressor. Traditional compressors mainly include piston compressors, scroll compressors, screw compressors, centrifugal compressors, etc. In order to reduce the friction during rotation, these compressors will use corresponding bearings and inject lubricating oil into the bearings to reduce the friction during bearing rotation.

[0003] This not only makes the internal structure of the compressor complex, but also when the lubricating oil cannot be replaced in time, the friction of the bearings will increase, affecting the efficiency of the compressor. Therefore, in the prior art, magnetic levitation bearings are used to replace traditional bearings, ensuring the minimum friction without injecting lubricating oil, so as to maximize the compression efficiency. After the magnetic levitation bearings are energized, the power shaft is suspended at the center position of the bearings. Once a power outage occurs, the internal bearings will tilt downward, and then the magnetic levitation bearings will be damaged due to impact. Summary of the Utility Model

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a direct expansion heat pump structure of a magnetic levitation compressor, which can support the power shaft through an internal mechanism during a power outage to prevent the power shaft from tilting downward and causing impact.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A magnetic levitation compressor direct expansion heat pump structure comprises an air storage tank, a support seat is symmetrically arranged at the bottom of the air storage tank, a motor is fixed to the upper surface of the air storage tank, a power shaft is arranged at the output end of the motor, a compression pump body is fixed to the upper surface of the air storage tank, an end of the power shaft away from the motor is installed on the compression pump body, a boss is arranged on the upper surface of the air storage tank, the boss is placed between the motor and the compression pump body, a protective box is fixed to the top of the boss, the power shaft passes through the protective box, a magnetic levitation bearing is arranged inside the protective box, the power shaft passes through the magnetic levitation bearing, a slideway is vertically opened on one side of the inside of the boss, a slide rod is vertically slidably installed inside the slideway, a semi-ring support plate is arranged on the top of the slide rod, the semi-ring support plate is placed below the power shaft, a convex ring is arranged inside the slideway, an extension rod is arranged at the bottom of the slide rod, the extension rod passes through the convex ring, and a magnetic suction plate A is arranged at the bottom of the extension rod.

[0009] Furthermore, a spring A is sleeved on the surface of the extension rod, and the spring A is placed above the inside of the slideway, the top of the spring A contacts the lower surface of the slide rod, and the bottom of the spring A contacts the convex ring.

[0010] Furthermore, a roller is evenly rotatedly installed inside the semi-ring support plate.

[0011] Furthermore, an electromagnetic block is arranged below the inside of the boss, the electromagnetic block is arranged in parallel with the magnetic suspension bearing circuit, and the magnetic attraction plate A is placed on one side of the top of the electromagnetic block.

[0012] Furthermore, a mounting hole is transversely opened at the lower side of the slideway, a wedge block is slidably installed inside the mounting hole, a spring B is arranged inside the mounting hole, and the spring B is in contact with the wedge block.

[0013] Furthermore, a storage cavity is vertically opened on the side of the top of the electromagnetic block facing away from the magnetic attraction plate A, and a magnetic attraction plate B is slidably installed inside the storage cavity. The magnetic attraction plate B is suspended above the electromagnetic block. A pull rope is connected to one end of the wedge block, and the pull rope passes through the spring B. The pull rope is distributed in an L shape, and the end of the pull rope facing away from the wedge block is connected to the top of the magnetic attraction plate B.

[0014] Furthermore, an air inlet pipe is provided at the output end of the compression pump body, and the output end of the compression pump body is connected to one end of an air storage tank, and an exhaust pipe is provided above one end of the air storage tank away from the compression pump body.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model provides a direct expansion heat pump structure of a magnetic levitation compressor, with an electromagnetic block connected in parallel below the magnetic levitation bearing. When the power is cut off, both of them lose power simultaneously. At this time, the internal spring can drive the semi-circular support plate to move upward to support the power shaft, preventing the power shaft from tilting downward and hitting due to the loss of support force. On the contrary, after the power is turned on, the semi-circular support plate automatically moves downward to prevent hindering the rotation of the power shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a sectional structural schematic diagram of the boss and the protective box of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the semi-circular support plate of the present utility model;

[0020] Figure 4 is for the present utility model Figure 2 A-region enlarged structural schematic diagram of.

[0021] Reference numeral description in the figure: 1, support base; 2, gas storage tank; 3, exhaust pipe; 4, compression pump body; 5, intake pipe; 6, motor; 61, power shaft; 7, boss; 8, protective box; 9, magnetic levitation bearing; 10, slideway; 11, slide bar; 12, semi-circular support plate; 13, roller; 14, extension rod; 15, convex ring; 16, spring A; 17, magnetic attraction plate A; 18, electromagnetic block; 19, mounting hole; 20, wedge block; 21, spring B; 22, pull rope; 23, storage cavity; 24, magnetic attraction plate B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1-4As shown, a magnetic suspension compressor direct expansion heat pump structure includes a gas storage tank 2, a support seat 1 is symmetrically arranged at the bottom of the gas storage tank 2, a motor 6 is fixed to the upper surface of the gas storage tank 2, a power shaft 61 is arranged at the output end of the motor 6, a compression pump body 4 is fixed to the upper surface of the gas storage tank 2, and the end of the power shaft 61 away from the motor 6 is installed on the compression pump body 4. After the motor 6 is energized, the compression pump body 4 can be driven to work through the power shaft 61 to achieve gas compression. A boss 7 is arranged on the upper surface of the gas storage tank 2, the boss 7 is placed between the motor 6 and the compression pump body 4, a protective box 8 is fixed on the top of the boss 7, the power shaft 61 passes through the protective box 8, and the protective box 8 A magnetic bearing 9 is arranged inside, and a power shaft 61 passes through the magnetic bearing 9. The power shaft 61 passes through the center position of the magnetic bearing 9. Eight magnetic plates are arranged on the inner side of the magnetic bearing 9. The power shaft 61 is supported by controlling different magnetic plates. A slideway 10 is vertically opened on one side of the inside of the boss 7. A slide rod 11 is vertically installed inside the slideway 10 for sliding. A semi-ring support plate 12 is arranged on the top of the slide rod 11. The semi-ring support plate 12 is placed under the power shaft 61. During normal operation, the semi-ring support plate 12 will not contact the power shaft 61. On the contrary, when the power is off, the semi-ring support plate 12 can be controlled to move upward to support the power shaft 61.

[0025] Among them, a convex ring 15 is provided inside the slide 10, an extension rod 14 is provided at the bottom of the slide rod 11, the extension rod 14 passes through the convex ring 15, a magnetic suction plate A17 is provided at the bottom of the extension rod 14, and a spring A16 is sleeved on the surface of the extension rod 14. The spring A16 is placed on the upper part of the slide 10, the top of the spring A16 contacts the lower surface of the slide rod 11, and the bottom of the spring A16 contacts the convex ring 15, so as to utilize the elastic force of the spring A16. When not subject to the suction force from below, the semi-ring support plate 12 can be driven to move upward by the elastic force of the spring A16.

[0026] Please refer to Figure 3 As shown, a roller 13 is evenly installed inside the semi-ring support plate 12 to rotate evenly. When the power is suddenly cut off, the power shaft 61 still keeps rotating for a short time due to inertia. At this time, the semi-ring support plate 12 can only support the power shaft 61 when moving upward, and keep the rotation of the power shaft 61 through the roller 13.

[0027] Please refer to Figures 2-4 As shown, an electromagnetic block 18 is arranged at the lower part of the boss 7, and the electromagnetic block 18 is arranged in parallel with the magnetic bearing 9 circuit. The magnetic attraction plate A17 is placed on the top side of the electromagnetic block 18. After power is turned on, the electromagnetic block 18 is energized to adsorb the magnetic attraction plate A17 above so that the slide bar 11 moves down to the bottom position. At this time, the spring A16 is in a force storage state, and a mounting hole 19 is horizontally opened at the lower side of the slideway 10. A wedge block 20 is slidably installed inside the mounting hole 19, and a spring B21 is arranged inside the mounting hole 19, and the spring B21 is in contact with the wedge block 20.

[0028] Among them, a storage cavity 23 is vertically opened on the side of the top of the electromagnetic block 18 facing away from the magnetic suction plate A17, and a magnetic suction plate B24 is slidably installed inside the storage cavity 23. The magnetic suction plate B24 is suspended above the electromagnetic block 18, and a pull rope 22 is connected to one end of the wedge block 20. The pull rope 22 passes through the spring B21. The pull rope 22 is distributed in an L shape. The end of the pull rope 22 facing away from the wedge block 20 is connected to the top of the magnetic suction plate B24. When electricity is applied, the magnetic suction plate A17 moves up, and the wedge block 20 moves toward the inside of the slide 10 to limit the magnetic suction plate A17 located at the top, thereby ensuring the supporting force for the power shaft 61.

[0029] Please refer to Figure 1 As shown, an air inlet pipe 5 is provided at the output end of the compression pump body 4, and the output end of the compression pump body 4 is connected to one end of the gas storage tank 2. An exhaust pipe 3 is provided above the end of the gas storage tank 2 away from the compression pump body 4, which can transport compressed gas to the inside of the gas storage tank 2, and corresponding valves are set inside the exhaust pipe 3 and the air inlet pipe 5.

[0030] Working principle: The exhaust pipe 3 and the intake pipe 5 are connected to the corresponding pipes respectively. When the power is on, since the magnetic bearing 9 and the electromagnetic block 18 are connected in parallel, the two are powered on or off at the same time. When the power is on, the magnetic force of the magnetic bearing 9 can ensure that the power shaft 61 is placed at the center position of the magnetic bearing 9. At the same time, the electromagnetic block 18 can adsorb the magnetic plate A17 and the magnetic plate B24 after being energized. At this time, the spring A16 is squeezed and stored, and the semi-ring support plate 12 is placed under the power shaft 61. At the same time, the magnetic plate B24 is adsorbed and moved downward, and the wedge block 20 can be pulled toward the inside of the installation hole 19 by the pull rope 22 to shrink. When the equipment is suddenly powered off, the magnetic bearing 9 and the electromagnetic block 18 lose their magnetic force at the same time. The magnetic plate A17 is no longer adsorbed, and the elastic force of the spring A16 is used to move the slide bar 11 upward, thereby making the semi-ring support plate 12 contact with the power shaft 61 and support the power shaft 61. At this time, the magnetic plate A17 is placed at the top of the formation. Similarly, because the magnetic plate B24 is no longer subjected to adsorption force, the elastic force of the spring B21 can be used to make the wedge block 20 exceed the inner wall of the slideway 10 to limit the magnetic plate A17 and ensure the supporting force for the power shaft 61. After power is turned on, the magnetic plate B24 is first adsorbed and moved downward, pulling the wedge block 20 to no longer limit the magnetic plate A17. At this time, the magnetic plate A17 is adsorbed and moved downward by the electromagnetic block 18, and will not hinder the rotation of the power shaft 61.

[0031] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A magnetic suspension compressor direct expansion heat pump structure, comprising a gas storage tank (2), wherein a support base (1) is symmetrically arranged at the bottom of the gas storage tank (2), characterized in that: A motor (6) is fixed on the upper surface of the gas storage tank (2), a power shaft (61) is provided at the output end of the motor (6), a compression pump body (4) is fixed on the upper surface of the gas storage tank (2), an end of the power shaft (61) facing away from the motor (6) is mounted on the compression pump body (4), a boss (7) is provided on the upper surface of the gas storage tank (2), the boss (7) is placed between the motor (6) and the compression pump body (4), a protective box (8) is fixed on the top of the boss (7), the power shaft (61) passes through the protective box (8), and a magnetic suspension bearing (9) is provided inside the protective box (8). ), the power shaft (61) passes through the magnetic bearing (9), a slideway (10) is vertically opened on one side of the inside of the boss (7), a slide rod (11) is vertically slidably installed inside the slideway (10), a semi-ring support plate (12) is arranged on the top of the slide rod (11), and the semi-ring support plate (12) is placed below the power shaft (61), a convex ring (15) is arranged inside the slideway (10), an extension rod (14) is arranged at the bottom of the slide rod (11), the extension rod (14) passes through the convex ring (15), and a magnetic attraction plate A (17) is arranged at the bottom of the extension rod (14).

2. A magnetic suspension compressor direct expansion heat pump structure according to claim 1, characterized in that: The surface of the extension rod (14) is sleeved with a spring A (16), which is placed above the inside of the slideway (10), with the top of the spring A (16) in contact with the lower surface of the slide rod (11), and the bottom of the spring A (16) in contact with the convex ring (15).

3. A magnetic levitation compressor direct expansion heat pump structure according to claim 1, characterized in that: A roller shaft (13) is evenly and rotatably mounted inside the semi-ring support plate (12).

4. A magnetic levitation compressor direct expansion heat pump structure according to claim 2, characterized in that: An electromagnetic block (18) is arranged at the lower part of the boss (7), the electromagnetic block (18) is arranged in parallel with the magnetic suspension bearing (9) circuit, and the magnetic attraction plate A (17) is placed on one side of the top of the electromagnetic block (18).

5. A magnetic levitation compressor direct expansion heat pump structure according to claim 4, characterized in that: A mounting hole (19) is transversely opened at the lower side of the slideway (10), a wedge block (20) is slidably mounted inside the mounting hole (19), a spring B (21) is arranged inside the mounting hole (19), and the spring B (21) is in contact with the wedge block (20).

6. A magnetic levitation compressor direct expansion heat pump structure according to claim 5, characterized in that: A storage cavity (23) is vertically opened on the side of the top of the electromagnetic block (18) away from the magnetic attraction plate A (17), and a magnetic attraction plate B (24) is slidably installed inside the storage cavity (23). The magnetic attraction plate B (24) is suspended above the electromagnetic block (18). One end of the wedge block (20) is connected to a pull rope (22), and the pull rope (22) passes through the spring B (21). The pull rope (22) is distributed in an L shape, and the end of the pull rope (22) away from the wedge block (20) is connected to the top of the magnetic attraction plate B (24).

7. The magnetic levitation compressor direct expansion heat pump structure according to claim 1, characterized in that: An air inlet pipe (5) is provided at the output end of the compression pump body (4), the output end of the compression pump body (4) is connected to one end of the air storage tank (2), and an exhaust pipe (3) is provided above the end of the air storage tank (2) facing away from the compression pump body (4).

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