An electric machine

Abstract

The utility model provides a kind of motor, it is related to motor technical field.Motor includes casing, cover, fan and microchannel heat exchanger;Casing is provided with air outlet and air inlet, air outlet and air inlet are respectively communicated with the inner chamber of casing;Cover is connected with casing, cover and casing are enclosed to form airflow channel, airflow channel is respectively communicated with air outlet and air inlet;Fan is arranged in airflow channel, and is used to drive gas to flow along airflow channel from air outlet to air inlet;Microchannel heat exchanger is arranged in airflow channel.Compared with conventional tube fin heat exchanger, microchannel heat exchanger is stronger in heat exchange capacity, and has better heat dissipation effect, so that the reliability of the entire motor is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor. Background Technology

[0002] Existing sealed motors often use tube-fin air-water heat exchangers to carry away the heat generated inside the sealed motor through the coolant, thereby achieving heat dissipation and temperature control inside the sealed motor.

[0003] However, the heat transfer area per unit volume of tube-fin heat exchangers is limited by manufacturing processes and cannot be further increased. The fins and tubes are usually made of different materials, and the tubes and fins are mechanically connected through processes such as tube insertion and expansion, resulting in high thermal resistance. Furthermore, the liquid refrigerant in the center of the copper tube is far from the tube wall, leading to low heat transfer participation. These three factors collectively restrict the heat transfer capacity of tube-fin heat exchangers, resulting in poor heat dissipation. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a motor.

[0005] This utility model provides the following technical solution:

[0006] An electric motor, comprising:

[0007] A housing, wherein an air outlet and an air inlet are provided on the housing, and the air outlet and the air inlet are respectively connected to the inner cavity of the housing;

[0008] An outer cover is connected to the housing, and the outer cover and the housing together form an airflow channel, which is connected to the air outlet and the air inlet respectively;

[0009] A fan, disposed within the airflow channel, for driving gas along the airflow channel from the air outlet to the air inlet; and

[0010] A microchannel heat exchanger, wherein the microchannel heat exchanger is disposed within the airflow channel.

[0011] As a further optional feature of the motor, the air outlet of the fan is connected to the air inlet, and the motor also includes a water baffle disposed within the airflow channel, the water baffle being located between the fan and the microchannel heat exchanger.

[0012] As a further optional solution for the motor, the water baffle includes a water-blocking baffle connected to the fan, and the water-blocking baffle is provided with a first through hole, which is aligned with the air inlet of the fan.

[0013] As a further optional feature of the motor, the water baffle also includes a plurality of wire meshes, which are spaced apart between the water baffle and the microchannel heat exchanger.

[0014] As a further optional solution for the motor, both the fan and the microchannel heat exchanger are disposed on the top surface of the housing, and a water receiving trough is provided on the top surface of the housing, the water receiving trough being located on the side of the microchannel heat exchanger facing the fan.

[0015] As a further optional feature of the motor, a drain pipe is provided on the housing, and the drain pipe is connected to the water receiving tank.

[0016] As a further alternative to the motor, a one-way valve is provided on the drain pipe.

[0017] As a further alternative to the motor, a cooling jacket is provided on the housing, and the outlet of the microchannel heat exchanger is connected to the inlet of the cooling jacket.

[0018] As a further optional feature of the motor, the outer casing is provided with an inspection port, the inspection port is covered with a first sealing plate, and the microchannel heat exchanger is inserted into the inspection port.

[0019] As a further optional feature of the motor, the inner wall of the outer casing is provided with guide plates, which are arranged parallel to the axis of the inspection port, and the guide plates are arranged in pairs on both sides of the microchannel heat exchanger.

[0020] The embodiments of this utility model have the following beneficial effects:

[0021] During the operation of the aforementioned motor, the fan drives gas to flow from the outlet to the inlet along the airflow channel, drawing gas out of the casing and directing it through the microchannel heat exchanger within the airflow channel, thereby cooling the gas. The cooled gas is then blown into the inlet by the fan and flows into the inner cavity of the casing, cooling the internal components. During this gas circulation, the gas continuously carries away heat from inside the motor and transfers it to the refrigerant within the microchannel heat exchanger, thus achieving internal heat dissipation and temperature control. Compared to conventional tube-fin heat exchangers, the microchannel heat exchanger has a stronger heat exchange capacity and better heat dissipation effect, improving the overall reliability of the motor.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This diagram shows an overall structural schematic of a motor according to an embodiment of the present invention;

[0025] Figure 2 A cross-sectional schematic diagram of an electric motor provided in an embodiment of the present invention is shown;

[0026] Figure 3 An exploded schematic diagram of an electric motor provided in an embodiment of this utility model is shown;

[0027] Figure 4 This diagram illustrates the fit between the housing and the fan in an electric motor according to an embodiment of the present invention.

[0028] Explanation of key component symbols:

[0029] 100 - Casing; 110 - Air outlet; 120 - Air inlet; 130 - Second water inlet; 140 - Second water outlet; 150 - Second sealing plate; 151 - Second through hole; 160 - Water receiving trough; 170 - Drain pipe; 180 - One-way valve; 200 - Outer cover; 210 - Airflow channel; 220 - Base plate; 230 - Side plate; 231 - Inspection port; 232 - First sealing plate; 240 - Top cover; 241 - Guide plate; 300 - Fan; 400 - Microchannel heat exchanger; 410 - First water inlet; 420 - First water outlet; 430 - Heat exchanger connecting pipe; 500 - Water baffle; 510 - First through hole. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Example

[0036] Please refer to the following: Figure 1 and Figure 2 This embodiment provides an electric motor, specifically a sealed electric motor with a microchannel heat exchanger. The electric motor includes a housing 100, an outer cover 200, a fan 300, and a microchannel heat exchanger 400.

[0037] The housing 100 is provided with an air outlet 110 and an air inlet 120, which are respectively connected to the inner cavity of the housing 100.

[0038] The outer cover 200 is connected to the housing 100, and the outer cover 200 and the housing 100 together form an airflow channel 210, which is connected to the air outlet 110 and the air inlet 120 respectively.

[0039] In addition, both the fan 300 and the microchannel heat exchanger 400 are disposed in the airflow channel 210, and the fan 300 is used to drive the gas to flow from the outlet 110 to the inlet 120 along the airflow channel 210.

[0040] During the operation of the motor, the fan 300 drives gas along the airflow channel 210 from the outlet 110 to the inlet 120, drawing gas out of the housing 100 and directing it through the microchannel heat exchanger 400 within the airflow channel 210, thereby cooling the gas. The cooled gas is then blown into the inlet 120 by the fan 300 and flows into the inner cavity of the housing 100, cooling the internal components. During this gas circulation, the gas continuously carries away heat from the motor and transfers it to the refrigerant within the microchannel heat exchanger 400, thus achieving internal temperature control and heat dissipation. Compared to conventional tube-fin heat exchangers, the microchannel heat exchanger 400 has a stronger heat exchange capacity and better heat dissipation effect, improving the overall reliability of the motor.

[0041] In some embodiments, a cooling jacket is provided on the housing 100. The outlet of the microchannel heat exchanger 400 is connected to the inlet of the cooling jacket.

[0042] Understandably, the inlet of the microchannel heat exchanger 400 and the outlet of the cooling jacket are connected to external coolant pipelines. In use, the external cooling equipment supplies a relatively cool refrigerant to the inlet of the microchannel heat exchanger 400. The refrigerant flows within the microchannel heat exchanger 400, exchanging heat with the gas flowing through it, thus cooling the gas. When the refrigerant flows out of the outlet of the microchannel heat exchanger 400, its temperature rises. Subsequently, the refrigerant continues to flow into the inlet of the cooling jacket. The refrigerant flows within the cooling jacket, exchanging heat with the housing 100, cooling the housing 100 and its internal components such as the stator. Finally, the refrigerant flows out of the outlet of the cooling jacket and returns to the external cooling equipment.

[0043] Connecting the microchannel heat exchanger 400 in series with the cooling jacket simplifies the piping structure, reduces the size of the equipment, and facilitates maintenance.

[0044] Please see Figure 1For example, the refrigerant is cooling water, and the cooling jacket is a circulating water jacket. Furthermore, the microchannel heat exchanger 400 has a first inlet 410 and a first outlet 420, and the cooling jacket has a second inlet 130 and a second outlet 140. The first inlet 410 and the second outlet 140 are respectively connected to an external coolant pipeline, and the first outlet 420 is connected to the second inlet 130 via a heat exchanger connecting pipe 430.

[0045] Please see Figure 3 In some embodiments, the outer cover 200 is provided with an inspection port 231, and the inspection port 231 is covered with a first sealing plate 232. The microchannel heat exchanger 400 is inserted into the inspection port 231.

[0046] After opening the first sealing plate 232, the user can remove or insert the microchannel heat exchanger 400 through the inspection port 231 for maintenance or replacement. After inserting the microchannel heat exchanger 400, the user closes the first sealing plate 232 to isolate the airflow channel 210 from the external environment.

[0047] Furthermore, the inner wall of the outer cover 200 is provided with guide plates 241. The guide plates 241 are arranged parallel to the axis of the inspection port 231, and the guide plates 241 are arranged in pairs on both sides of the microchannel heat exchanger 400.

[0048] When the user inserts the microchannel heat exchanger 400 into the inspection port 231, the guide plates 241 set on both sides of the microchannel heat exchanger 400 can guide and limit the microchannel heat exchanger 400, which is conducive to the installation of the microchannel heat exchanger 400 in place.

[0049] For example, the outer cover 200 includes a bottom plate 220, a side plate 230 and a top cover 240. The housing 100, the bottom plate 220, the side plate 230 and the top cover 240 are connected in sequence and enclose to form an airflow channel 210.

[0050] The inspection port 231 is located on the side plate 230, and the first sealing plate 232 is bolted to the side plate 230. The guide plate 241 is located on the top cover 240.

[0051] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the air outlet of the fan 300 is connected to the air inlet 120.

[0052] In addition, the aforementioned motor also includes a water baffle 500. The water baffle 500 is disposed within the airflow channel 210 and is located between the fan 300 and the microchannel heat exchanger 400.

[0053] During use, condensation may occur on the surface of the microchannel heat exchanger 400. Considering the structural characteristics of the microchannel heat exchanger 400, which are not conducive to the downward flow of liquid along the direction of gravity, the condensation may be splashed onto the control board of the fan 300 due to the suction action of the fan 300, causing malfunctions of the electronic components within the control board. To avoid this situation, a water baffle 500 is installed between the fan 300 and the microchannel heat exchanger 400 to block the condensation and prevent it from splashing onto the control board.

[0054] Please see Figure 4 For example, the air inlet 120 is covered with a second sealing plate 150, and the air outlet of the fan 300 is connected to the air inlet 120 through the second sealing plate 150. Accordingly, the second sealing plate 150 is provided with a second through hole 151, and the second through hole 151 is aligned with the air outlet of the fan 300.

[0055] Please refer to it again. Figure 3 In this embodiment, the water-blocking component 500 includes a water-proof baffle. The water-proof baffle is connected to the fan 300, and a first through hole 510 is provided on the water-proof baffle, which is aligned with the air inlet of the fan 300.

[0056] During use, the gas cooled by the microchannel heat exchanger 400 impacts the water-proof baffle, thus preventing condensate from splashing onto the control panel behind the water-proof baffle.

[0057] Furthermore, the water-blocking component 500 also includes multiple wire meshes (not shown in the figure), which are spaced apart between the water-blocking baffle and the microchannel heat exchanger 400.

[0058] When the gas cooled by the microchannel heat exchanger 400 flows through the wire mesh, the condensate that may be mixed in the gas is adsorbed onto the surface of the wire mesh under the action of surface tension and separated from the gas. This can reduce the content of condensate in the gas flowing to the fan 300, making it less likely for condensate to splash onto the control panel.

[0059] Please refer to the following: Figure 2 and Figure 4 In this embodiment, both the fan 300 and the microchannel heat exchanger 400 are disposed on the top surface of the housing 100. A water receiving tank 160 is provided on the top surface of the housing 100, and the water receiving tank 160 is located on the side of the microchannel heat exchanger 400 facing the fan 300.

[0060] Understandably, mounting the fan 300 and the microchannel heat exchanger 400 on the top surface of the housing 100 allows the housing 100 to support the fan 300 and the microchannel heat exchanger 400 without affecting the installation and fixation of the housing 100.

[0061] During use, the condensate mixed in the gas falls into the water collection tank 160 under its own gravity or by the obstruction of the water baffle 500, and collects in the water collection tank 160. The water collection tank 160 can store condensate, preventing condensate from flowing freely along the top surface of the casing 100, and thus preventing condensate from flowing into the casing 100 through the air outlet 110 and the air inlet 120.

[0062] Furthermore, a drain pipe 170 is provided on the casing 100, and the drain pipe 170 is connected to the water receiving tank 160.

[0063] During use, the condensate collected in the water collection tank 160 can be discharged in time through the drain pipe 170 to prevent the condensate from overflowing from the water collection tank 160.

[0064] It should be noted that the drain pipe 170 is connected to the side wall of the water receiving tank 160. When a certain volume of condensate accumulates in the water receiving tank 160, the condensate is discharged through the drain pipe 170.

[0065] Furthermore, a one-way valve 180 is installed on the drain pipe 170.

[0066] Understandably, the one-way valve 180 allows condensate in the water tank 160 to drain through the drain pipe 170. When no condensate is drained, the one-way valve 180 closes to prevent outside air from being drawn into the airflow passage 210 through the drain pipe 170.

[0067] The drain pipe 170 and the one-way valve 180 together constitute a drainage device, which can also be equipped with a water leakage alarm function.

[0068] In another embodiment of this application, the fan 300 and the microchannel heat exchanger 400 may also be disposed in other parts of the housing 100. For example, the fan 300 may be disposed on the bottom surface of the housing 100, and this application does not limit this to such a location.

[0069] In addition, the air-facing surface of the microchannel heat exchanger 400 can be perpendicular to the line connecting the outlet 110 and the inlet 120, or it can be parallel to the outlet 110.

[0070] In other embodiments, the air inlet of the fan 300 can also be directly connected to the air outlet of the microchannel heat exchanger 400 through a pipe, in which case there is no need to set up structures such as the water baffle 500 and the water receiving tank 160.

[0071] In summary, during the operation of the motor, the fan 300 drives the gas along the airflow channel 210 from the outlet 110 to the inlet 120, drawing the gas out of the housing 100 and directing it through the microchannel heat exchanger 400 within the airflow channel 210, thereby cooling the gas. The cooled gas is then blown into the inlet 120 by the fan 300 and flows into the inner cavity of the housing 100, cooling the internal components. During the gas circulation, the gas continuously carries away heat from inside the motor and transfers it to the refrigerant within the microchannel heat exchanger 400, thus achieving internal heat dissipation and temperature control. Compared to conventional tube-fin heat exchangers, the microchannel heat exchanger 400 has a stronger heat exchange capacity and better heat dissipation effect, thereby improving the overall reliability of the motor.

[0072] Furthermore, copper, commonly used in tube-fin heat exchangers, is a major contributor to their cost. As copper prices rise, the overall cost of the heat exchanger continues to increase. In contrast, using an aluminum microchannel heat exchanger 400 instead of a conventional tube-fin heat exchanger can save costs.

[0073] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0074] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0075] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An electric motor, characterized in that, include: A housing, wherein an air outlet and an air inlet are provided on the housing, and the air outlet and the air inlet are respectively connected to the inner cavity of the housing; An outer cover is connected to the housing, and the outer cover and the housing together form an airflow channel, which is connected to the air outlet and the air inlet respectively; A fan, disposed within the airflow channel, for driving gas along the airflow channel from the air outlet to the air inlet; and A microchannel heat exchanger, wherein the microchannel heat exchanger is disposed within the airflow channel.

2. The motor according to claim 1, characterized in that, The air outlet of the fan is connected to the air inlet, and the motor also includes a water baffle, which is disposed in the airflow channel and located between the fan and the microchannel heat exchanger.

3. The motor according to claim 2, characterized in that, The water-blocking component includes a water-blocking baffle, which is connected to the fan. The water-blocking baffle has a first through hole, which is aligned with the air inlet of the fan.

4. The motor according to claim 3, characterized in that, The water-blocking component also includes multiple wire meshes, which are spaced apart between the water-blocking baffle and the microchannel heat exchanger.

5. The motor according to claim 2, 3 or 4, characterized in that, Both the fan and the microchannel heat exchanger are located on the top surface of the housing. A water collection trough is provided on the top surface of the housing, and the water collection trough is located on the side of the microchannel heat exchanger facing the fan.

6. The motor according to claim 5, characterized in that, A drain pipe is installed on the casing, and the drain pipe is connected to the water receiving tank.

7. The motor according to claim 6, characterized in that, A one-way valve is installed on the drain pipe.

8. The motor according to claim 1, characterized in that, A cooling jacket is provided on the casing, and the outlet of the microchannel heat exchanger is connected to the inlet of the cooling jacket.

9. The motor according to claim 1, characterized in that, The outer cover is provided with an inspection port, and the inspection port is covered with a first sealing plate. The microchannel heat exchanger is inserted into the inspection port.

10. The motor according to claim 9, characterized in that, The inner wall of the outer cover is provided with guide plates, which are arranged parallel to the axis of the inspection port, and the guide plates are arranged in pairs on both sides of the microchannel heat exchanger.

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