Relay pumping device for refrigeration pipeline of machine room

Abstract

The utility model provides a machine room refrigeration pipeline relay pumping device which comprises a driving motor, one end of the driving motor is fixedly connected with a connecting sleeve, the end of the connecting sleeve is fixedly connected with a pump body, one end of the driving motor extends to be provided with a motor shaft, the motor shaft is fixedly connected with a conveying screw rod, and the conveying screw rod is fixedly connected with a screw rod. The edge of the conveying screw makes contact with the inner wall of the pump body, one end of the pump body is fixedly connected with an end cover, an input pipe opening is formed in the side wall of the pump body, and an output pipe opening is formed in the side wall of the end cover. On the premise that the load of the compressor is not increased, the refrigerant can be further conveyed.

Description

Technical Field

[0001] This invention relates to the field of pumping technology, and in particular to a relay pumping device for computer room cooling pipelines. Background Technology

[0002] Servers and other equipment in a data center generate a significant amount of heat during operation. To ensure the stable operation of these devices, heat dissipation is necessary. Air conditioning is the most common cooling solution, and for large data centers, central air conditioning is typically used. This involves a large outdoor condenser and several evaporators distributed throughout the data center. The refrigerant is compressed by a compressor, dissipates heat at the condenser, and then evaporates in the evaporators to absorb heat.

[0003] However, in large computer rooms, evaporators need to be distributed to cover the entire room, and the distance the refrigerant travels to each evaporator varies. This can easily lead to uneven refrigerant evaporation rates in each evaporator, resulting in uneven temperature distribution within the computer room. If throttling valves or similar devices are used for control, it is essential to ensure the valves are properly sealed. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a relay pumping device for computer room cooling pipelines, comprising a drive motor, a connecting sleeve fixedly connected to one end of the drive motor, a pump body fixedly connected to the end of the connecting sleeve, a motor shaft extending from one end of the drive motor, and a conveying screw fixedly connected to the motor shaft, with the edge of the conveying screw contacting the inner wall of the pump body. Starting the drive motor, the conveying screw rotates via the motor shaft, thereby propelling the refrigerant within it.

[0005] Furthermore, a planetary reduction mechanism is installed inside the drive motor. The purpose is that since the edge of the conveying screw contacts the inner wall of the pump body, a larger torque is needed to drive the conveying screw to rotate. Therefore, a planetary reduction mechanism is set up. The purpose of the contact between the edge of the conveying screw and the inner wall of the pump body is to increase the sealing performance and improve the conveying efficiency. The edge of the conveying screw can be treated to coat the surface with a layer of ceramic to reduce frictional resistance.

[0006] An end cap is fixedly connected to one end of the pump body. An inlet is located on the side wall of the pump body, and an outlet is located on the side wall of the end cap. That is, when the delivery screw operates, refrigerant enters the pump body through the inlet and is ultimately delivered through the outlet, increasing the kinetic energy of the refrigerant. Note that the connections between the inlet, outlet, and refrigeration piping also need to be made using soldering.

[0007] Preferably, a junction box is fixedly connected to the end of the drive motor, and several heat sinks are provided on the side wall of the drive motor. The heat sinks are used to improve the passive heat dissipation capability of the drive motor.

[0008] Preferably, the contact end between the connecting sleeve and the pump body is provided with a first bevel. After the components are assembled and tested to meet the technical requirements, they are welded at the first bevel. Tin alloy can be used as the welding material. This not only achieves a stable connection between the connecting sleeve and the pump body, but also ensures the sealing between the two and prevents refrigerant leakage.

[0009] Preferably, a second bevel is provided at the contact end between the pump body and the end cover. The purpose of the second bevel is the same as that of the first bevel, mainly to prevent refrigerant leakage.

[0010] Preferably, the pump body has a stepped end structure, and a fixing plate is provided inside the end cover. The fixing plate is fixed by the end of the pump body and is located between the conveying screw and the output port. The front side wall of the pump body is provided with threads and is fixedly connected to the end cover through the threads. After the pump body and the end cover are connected and fixed, the fixing plate is also clamped and fixed.

[0011] Preferably, a groove is provided on one side of the fixed plate, and a through hole is provided in the groove. A valve plate is provided in the groove and covers the through hole. A connector is provided on the edge of the valve plate, and the connector is fixedly connected to the fixed plate. The fixed plate and the valve plate constitute a one-way valve. When the conveying screw is working, the refrigerant is pushed open by the valve plate and passes through the through hole, enters the other side of the fixed plate, and is finally sent out from the output port. If the pressure at the output port increases, the refrigerant will flow backward and be blocked by the valve plate, thus preventing the refrigerant from flowing backward.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. Adding a relay pump device to the refrigerant pipeline in the computer room can increase the pressure in the refrigerant pipeline, increase the refrigerant delivery range, and reduce the operating resistance of the compressor. It can also further control the speed of the drive motor and control the refrigerant delivery speed. The refrigerant delivery speed can be controlled according to the distribution of the evaporator to meet the heat dissipation needs of the computer room.

[0014] 2. It is equipped with a fixed plate, valve plate and other structures, which has the advantage of unidirectional refrigerant delivery.

[0015] 3. It is equipped with a first bevel and a second bevel, which facilitates welding and improves the sealing of the device after welding, thus preventing refrigerant leakage. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is an exploded view of the front end of the present invention.

[0019] List of reference numerals in the attached diagram:

[0020] 1. Junction box; 2. Drive motor; 3. Connecting sleeve; 4. First bevel; 5. Input port; 6. Pump body; 7. Second bevel; 8. Output port; 9. End cover; 10. Motor shaft; 11. Conveying screw; 12. Fixing plate; 13. Through hole; 14. Valve plate. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] like Figures 1 to 3 As shown, a relay pumping device for a computer room cooling pipeline includes a drive motor 2, which is cylindrical and has a multi-stage planetary reduction mechanism inside to increase its output torque. A connecting sleeve 3, which is tapered (larger at one end and smaller at the other), is fixedly connected to one end of the drive motor 2 via a farad connection. A low-temperature resistant sealing ring is provided between the connecting sleeve 3 and the drive motor 2. A pump body 6 is fixedly connected to the end of the connecting sleeve 3. The pump body 6 is cylindrical with one end sealed. A motor shaft 10 extends from one end of the drive motor 2. A hole is pre-drilled at the sealed end of the pump body 6 to allow the motor shaft 10 to pass through. A sealing ring is placed between the hole and the motor shaft 10. A conveying screw 11 is fixedly connected to the motor shaft 10. When the drive motor 2 is started, the conveying screw 11 is driven to rotate via the transmission of the motor shaft 10, thus conveying the refrigerant. The edge of the conveying screw 11 contacts the inner wall of the pump body 6 to prevent refrigerant from overflowing from the gap between the conveying screw 11 and the pump body 6, thus reducing conveying efficiency. A planetary reduction mechanism is also included to ensure the normal rotation of the conveying screw 11.

[0023] One end of the pump body 6 is fixedly connected to an end cap 9, which is a cylindrical structure. The side wall of the pump body 6 is provided with an inlet port 5, and the side wall of the end cap 9 is provided with an outlet port 8. When the delivery screw 11 rotates, the refrigerant enters through the inlet port 5 and exits through the outlet port 8. Note that the connection between the inlet port 5, the outlet port 8, and the refrigeration piping also needs to be made by soldering.

[0024] A junction box 1 is fixedly connected to the end of the drive motor 2 for connecting to an external power source to supply power to the drive motor 2. Several heat sinks are provided on the side wall of the drive motor 2 to improve the passive heat dissipation capability of the drive motor 2.

[0025] A first bevel 4 is provided at the contact end between the connecting sleeve 3 and the pump body 6, and a second bevel 7 is provided at the contact end between the pump body 6 and the end cover 9. The first bevel 4 and the second bevel 7 have the same function. After the installation and testing of each component are completed, the qualified device is welded between the first bevel 4 and the second bevel 7. The welding material used is tin alloy. After welding, not only is the connection stability between the connecting sleeve 3 and the pump body 6, and between the pump body 6 and the end cover 9 improved, but also the sealing treatment between the connecting sleeve 3 and the pump body 6, and between the pump body 6 and the end cover 9 is achieved, so as to avoid refrigerant leakage.

[0026] The end of the pump body 6 has a stepped structure, that is, the side wall of the first step of the pump body 6 is provided with threads, and the threads are engaged with the threads on the inner wall of the end cover. A fixing plate 12 is provided inside the end cover 9. The fixing plate 12 is abutted and fixed by the end of the pump body 6. That is, when the end cover 9 is fixed to the end of the pump body 6 by a threaded connection, the fixing plate 12 is clamped between the two and fixed. The fixing plate 12 is located between the conveying screw 11 and the output port 8.

[0027] A groove is provided on one side of the fixed plate 12, and a through hole 13 is provided in the groove. A valve plate 14 is provided in the groove and covers the through hole 13. A connector is provided on the edge of the valve plate 14, and the connector is fixedly connected to the fixed plate 12. The valve plate 14 and the fixed plate 12 constitute a one-way valve structure. When the pressure on one side of the conveying screw 11 increases, the refrigerant pushes the valve plate 14, causing the refrigerant to pass through the through hole 13 and enter one side of the output pipe 8, and be sent out from the output pipe 8. At that time, the pressure on one side of the output pipe 8 increases, and under the action of pressure, the through hole on the valve plate 14 is blocked, realizing the one-way cutoff effect of refrigerant.

[0028] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A relay pumping device for computer room cooling pipelines, characterized in that, Includes a drive motor (2), one end of which is fixedly connected to a connecting sleeve (3), and the end of the connecting sleeve (3) is fixedly connected to a pump body (6). One end of the drive motor (2) extends to provide a motor shaft (10), and a conveying screw (11) is fixedly connected to the motor shaft (10), and the edge of the conveying screw (11) contacts the inner wall of the pump body (6). One end of the pump body (6) is fixedly connected to an end cap (9), and the side wall of the pump body (6) is provided with an inlet (5) and the side wall of the end cap (9) is provided with an outlet (8).

2. The relay pumping device for computer room cooling pipelines according to claim 1, characterized in that: The end of the drive motor (2) is fixedly connected to a junction box (1), and the side wall of the drive motor (2) is provided with several heat sinks.

3. The relay pumping device for computer room cooling pipelines according to claim 1, characterized in that: The contact end between the connecting sleeve (3) and the pump body (6) is provided with a first bevel (4).

4. A relay pumping device for computer room cooling pipelines according to claim 1, characterized in that: The contact end between the pump body (6) and the end cover (9) is provided with a second bevel (7).

5. A relay pumping device for computer room cooling pipelines according to claim 1, characterized in that: The pump body (6) has a stepped structure at the end and a fixing plate (12) is provided inside the end cover (9). The fixing plate (12) is fixed by the end of the pump body (6) and is located between the conveying screw (11) and the output port (8).

6. A relay pumping device for computer room cooling pipelines according to claim 5, characterized in that: A groove is provided on one side of the fixing plate (12), and a through hole (13) is provided in the groove. A valve plate (14) is provided in the groove, and the valve plate (14) covers the through hole (13). A connector is provided on the edge of the valve plate (14), and the connector is fixedly connected to the fixing plate (12).

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