WO2020063750A1 - Liquid cooling servo motor - Google Patents

Abstract

A liquid cooling servo motor, comprising a casing (1) and a stator (4). A liquid inlet (2) and a liquid outlet (3) are provided on the casing (1), and the casing (1) further comprises: multiple flow channels (1.2), a distribution cavity (1.1), and a liquid collecting cavity (1.3), wherein the multiple flow channels (1.2) are all spirally arranged on the inner wall of the casing (1), the multiple flow channels (1.2) are sequentially arranged in the axial direction of the casing (1), and two ends of the multiple flow channels (1.2) are respectively provided with a plurality of flow channel inlets (1.2.1) and a plurality of flow channel outlets (1.2.2); the distribution cavity (1.1) is provided on one side of the inner wall of the casing (1) in the circumferential direction of the casing (1), the distribution cavity (1.1) is communicated with the liquid inlet (2) to introduce cooling liquid and distribute the cooling liquid to the multiple flow channels (1.2) by means of the plurality of flow channel inlets (1.2.1) communicated with the distribution cavity (1.1); the liquid collecting cavity (1.3) is provided on the other side of the inner wall of the casing (1) in the circumferential direction of the casing (1), the plurality of flow channel outlets (1.2.2) are all communicated with the liquid collecting cavity (1.3) to collect the cooling liquid into the liquid collecting cavity (1.3), and the liquid collecting cavity (1.3) is communicated with the liquid outlet (3) to guide out the cooling liquid in a centralized mode. The liquid cooling servo motor has the advantages of few cooling liquid flowing paths, small pressure loss of a cooling flow channel, and good cooling effect.

Description

Liquid-cooled servo motor Technical field

The utility model relates to the technical field of liquid-cooled parts with flow channels inside, and particularly to a liquid-cooled servo motor.

Background technique

Liquid-cooled parts have a structure with cooling channels inside, such as a casing and a cooling cover. The liquid-cooled parts flow through the cooling liquid to cool the shell of the liquid-cooled parts. If the length of the shell is long, the cooling effect needs to ensure that the shell can be cooled, and the path of the spiral cooling flow path is long. The liquid flows through the entire spiral cooling channel.

technical problem

The technical problem to be solved by the present utility model is to provide a liquid-cooled servo motor with few cooling liquid flowing paths, small pressure loss in the cooling channel, and good cooling effect.

Technical solutions

The technical solution adopted by the utility model to solve the above problems is: a liquid-cooled servo motor, which includes a casing and a stator, the casing is provided with a liquid inlet and a liquid outlet, and the casing further includes:

The multiple flow channels are spirally surrounded along the inner wall of the cabinet, and the multiple flow channels are sequentially arranged along the axial direction of the cabinet, and the multiple channels

There are multiple flow channel inlets and multiple flow channel outlets at each end of the flow channel;

A distribution cavity is arranged on the inner wall side of the casing along the circumferential direction of the casing, and the distribution cavity is in communication with the liquid inlet to cool

Liquid introduction, distributing cooling liquid to multiple flow channels through multiple flow channel inlets communicating with the distribution cavity;

The liquid collecting cavity is arranged on the other side of the inner wall of the casing along the circumferential direction of the casing, and multiple outlets of the flow channels are in communication with the liquid collecting cavity to collect the cooling liquid into the liquid collecting cavity. The liquid ports communicate with each other to lead out the cooling liquid.

Further, a plurality of flow channel inlets are disposed on a side wall of the distribution cavity and are evenly spaced along the circumferential direction of the cabinet.

Further, the number of multi-channels is 2-20.

Further, the casing includes an inner casing and an outer casing, and the casing and the inner casing are welded and fixed together by welding along a predetermined welding route along the inner wall of the inner casing so as to form the Multiple runners.

Further, the inner shell is welded and fixed to the outer shell by a spiral welding route provided on the inner wall.

Further, the integral member fixing ring composed of the outer shell and the inner shell is sleeved on the outer periphery of the stator.

Further, the material of the inner shell is copper.

Beneficial effect

Compared with the prior art, the utility model has the advantages that: by providing a plurality of spiral flow channels, and a plurality of spiral flow channels are sequentially arranged along the axial direction of the casing, a plurality of spiral flow channels are provided; Compared with the original single spiral flow channel cooling, if the same cooling effect is achieved, that is, the length of the spiral through which the cooling liquid passes is the same, set the number of multiple cooling flow channels. For n, n≥2, the length of the cooling path of each spiral flow path is 1 / n of the length of a single spiral flow path, that is, the length of the cooling liquid flowing in each cooling flow path is doubled Shrinkage can avoid excessive coolant pressure loss. On the other hand, because the pressure drop is small, the flow rate of the coolant in the cooling channel can be increased, further improving the cooling effect. The distribution is performed to ensure that the flow can be evenly distributed to a plurality of spiral flow channels to improve the uniformity of cooling. After the cooling liquid flows out through the plurality of spiral flow channels, the coolant is collected through the liquid collecting cavity and then discharged through the liquid outlet. Sink cavity side The cooling fluid can be collected, on the other hand may buffer coolant.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the overall structure of the utility model.

FIG. 2 is a schematic structural view of a section of a distribution cavity of the present invention.

FIG. 3 is a schematic cross-sectional structure of the present invention.

1-chassis, 1.1-distribution cavity, 1.2 multi-channel, 1.2.1-channel inlet, 1.2.2-channel outlet, 1.3-collection cavity, 1.4-outer shell, 1.5-inner shell, 1.6-spiral Baffle, 2-inlet, 3-outlet, 4-stator.

Best Mode of the Invention

The embodiments of the present invention will be further described below with reference to the drawings.

As shown in Figure 1-3,

Various aspects of the illustrative embodiments herein will be described below using terms commonly used by those skilled in the art to convey the substance of their work to others skilled in the art. However, it will be apparent to those skilled in the art that alternative embodiments may be practiced using only some of the various aspects described. For explanatory purposes, specific values, materials, and configurations are set forth herein to make the illustrative embodiments easier to understand. However, it will be apparent to those skilled in the art that alternative embodiments herein may be practiced without specific details being omitted. In other cases, well-known features may be omitted or simplified so as not to make the embodiments herein difficult to understand.

It should be understood that although the terms left, right, up, down, etc. appear in various places herein to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding and are not used to define any limitation in direction or order. The term "and / or" as used herein includes any or all combinations of one or more of the associated listed items, ie, "and", "or", "exclusive or", "one", "some But not all "," neither "and / or" both ". The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the terms "including" and / or "comprising," as used herein, specify the presence of stated features, integers, steps, operations, elements and / or components, but do not exclude one or more other features, integers, The presence or addition of steps, operations, elements, components, and / or groups thereof.

A liquid-cooled servo motor includes a casing 1 and a stator 4. The casing 1 is provided with a liquid inlet 2 and a liquid outlet 3. The casing 1 further includes:

The multi-channels 1.2 are spirally surrounded along the inner wall of the casing 1, and the multi-channels are sequentially arranged along the axial direction of the casing 1, and multiple flows are respectively provided at two ends of the multi-channels 1.2. Channel inlet 1.2.1 and multiple flow channel outlets 1.2.2;

The distribution cavity 1.1 is arranged on the inner wall side of the casing 1 along the circumferential direction of the casing 1. The distribution cavity 11. is in communication with the liquid inlet 2 to introduce the cooling liquid. The flow channel inlet 1.1.2 distributes the cooling liquid to the multiple flow channels 1.2; due to the small pressure drop, the flow rate of the cooling liquid in the cooling flow channel can be increased, and the cooling effect is further improved. The distribution is performed to ensure that the flow can be evenly distributed to a plurality of spiral flow channels to improve the uniformity of cooling.

The liquid collecting cavity 1.3 is arranged on the other side of the inner wall of the casing 1 along the circumferential direction of the casing 1. Multiple flow channel outlets 1.2.2 are in communication with the liquid collecting cavity 1.3 to collect the cooling liquid into the liquid collecting cavity 1.3. The liquid collecting cavity 1.3 is communicated with the liquid outlet 3 to discharge the cooling liquid collectively.

Multiple flow channel inlets 1.2.1 are arranged on the side wall of the distribution cavity 1.1 and are evenly spaced along the circumferential direction of the cabinet 1. The inlet of the spiral flow channel is arranged on the side wall of the distribution cavity, so that the inlet of the spiral flow channel is on the same radial section, thereby ensuring that the cooling liquid in the distribution cavity can be evenly distributed into the spiral flow channel uniformly distributed in the circumferential direction.

The number of spiral flow channels 1.2 shown in FIG. 2 is four. Among them, A is the inlet of the first spiral flow channel, B is the inlet of the second spiral flow channel, and the third is The entrances of the spiral flow channel and the fourth spiral flow channel cannot be marked due to obstruction of sight, but can be determined without any doubt as being dependent on the first spiral flow channel and the second spiral flow channel. The sequence interval is set at 90 °.

A plurality of flow channel outlets 1.2.2 are arranged on the side wall of the liquid collecting cavity 1.3 and are evenly spaced along the circumferential direction of the casing 1. After the cooling liquid flows out from the spiral flow channel, it is collected through the liquid collecting cavity and then discharged through the liquid outlet. The liquid collecting cavity can collect the cooling liquid on the one hand and buffer the cooling liquid on the other.

The number of multi-channels 1.2 is 2-20. Preferably, the number of spiral flow channels 1.2 can be set to four, six or eight.

The casing 1 includes an inner casing 1.5 and an outer casing 1.4, and the casing 1 and the inner casing 1.5 are welded and fixed together by a predetermined welding route along the inner wall of the inner casing 1.5 to form the above-mentioned multi-channels 1.2. The method of welding and fixing the predetermined welding course of the inner wall of the inner shell as a whole makes the shape of the servo motor without welding points, more beautiful, and has sufficient strength to withstand high water pressure, and it is not easy for water leakage to occur.

The inner shell 1.5 is welded and fixed to the outer shell 1.4 by a spiral welding route provided on the inner wall.

The integral member fixing ring composed of the outer shell 1.4 and the inner shell 1.5 is sleeved on the outer periphery of the stator 4.

The cast outer shell and the machined inner shell can be welded and fixed in advance, and the process is more optimized. And because the casing is not directly fitted on the outside of the stator, it is easier to control the machining accuracy, and the strength of the parts such as the water nozzle or the leg of the cast casing can be ensured. Later, by using an integrated component composed of the outer shell and the inner shell to fix the ring on the outer periphery, the supporting effect between the stator and the inner shell can be made better, less bulging occurs, the overall strength is better, and the sealing performance is better.

The manufacturing process of the liquid-cooled servo motor of the present application may include the following steps:

1) The shell is made of aluminum alloy, and a plurality of spiral flow channels are integrally formed on the inner wall;

2) The inner diameter of the shell processed by the lathe;

3) Lathe machining inner shell outer diameter;

4) Tightly fit the outer shell to the inner shell;

5) The outer shell and the inner shell are welded into one body along a predetermined welding route of the inner wall of the inner shell;

6) Lathe machining inner diameter of inner shell;

7) The integral member formed by the inner shell and the outer shell is tightly fixed to the outer periphery of the stator.

The casing 1 is generally made of an aluminum alloy material, and the cooling grooves, feet, and water nozzles are integrally formed to ensure that the strength of the cast water nozzles or feet is sufficient.

The material of the inner shell 1.5 may be conventional aluminum, or copper may be selected to improve the overall heat dissipation performance of the liquid cooling member as a whole.

The above only describes the preferred embodiment of the present invention, but it cannot be understood as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the scope of protection of the independent claims of the utility model are within the scope of protection of the utility model.

Claims (8)

A liquid-cooled servo motor includes a casing and a stator. The casing is provided with a liquid inlet and a liquid outlet, and is characterized in that the casing further includes: The multiple flow channels are spirally surrounded along the inner wall of the casing, and the multiple flow channels are sequentially arranged along the axial direction of the casing, and the two ends of the multiple flow channels are respectively provided with multiple flow channel inlets and multiple flow channels. Exits of runners; A distribution cavity is arranged on the inner wall side of the casing along the circumferential direction of the casing. The distribution cavity is in communication with the liquid inlet to introduce cooling liquid, and the cooling is conducted through a plurality of flow channel inlets in communication with the distribution cavity. Liquid distribution to multiple runners; The liquid collecting cavity is arranged on the other side of the inner wall of the casing along the circumferential direction of the casing, and multiple outlets of the flow channels are in communication with the liquid collecting cavity to collect the cooling liquid into the liquid collecting cavity. The liquid ports communicate with each other to lead out the cooling liquid. The liquid-cooled servo motor according to claim 1, wherein a plurality of flow channel inlets are disposed on a side wall of the distribution cavity and are evenly spaced along a circumferential direction of the casing. The liquid-cooled servo motor according to claim 1, wherein a plurality of outlets of the flow channels are arranged on a side wall of the liquid collecting chamber and are evenly spaced along a circumferential direction of the casing. The liquid-cooled servo motor according to claim 1, wherein the number of the multi-channels is 2-20. The liquid-cooled servo motor according to claim 1, characterized in that: the casing comprises an inner casing and an outer casing that are inner and outer casings, and the casing and the inner casing pass between the inner casing and the inner casing along an inner wall of the inner casing. The predetermined welding course is welded and fixed as a whole to form the multiple flow channels. The liquid-cooled servo motor according to claim 5, wherein the inner shell is welded and fixed to the outer shell by a spiral welding route provided on the inner wall. The liquid-cooled servo motor according to claim 6, wherein an integral member fixing ring composed of the outer shell and the inner shell is sleeved on the outer periphery of the stator. The liquid-cooled servo motor according to claim 7, wherein the material of the inner shell is copper.