Backpack type cooling structure of vertical motor

Abstract

The utility model relates to a backpack type cooling structure for a vertical motor, which is used for cooling the motor and comprises a circulating shell and a water heat exchanger, and the circulating shell is fixed on one side of the motor; a compartment partition plate is arranged in the circulation shell, the circulation shell comprises a first cold air cavity, a cooling cavity and a second cold air cavity which are sequentially communicated, an air inlet and two air outlets are formed in the side, making contact with the motor, of the circulation shell, the air outlets are symmetrically formed in the two sides of the air inlet, and the cooling cavity is communicated with the rotor side of the motor through the air inlet. The first cold air cavity and the second cold air cavity communicate with the two ends of the motor through air outlets correspondingly. The water heat exchanger is fixed in the cooling cavity, and the water heat exchanger is matched with the air inlet in shape; and fans are arranged in the first cold air cavity and the second cold air cavity. Compared with the prior art, the motor cooling device has the advantages of high motor cooling consistency, good water cooling effect and the like.

Description

Technical Field

[0001] The utility model relates to the field of motor cooling devices, in particular to a vertical motor backpack cooling structure. Background Art

[0002] The existing motor cooler structures all have cooling pipes directly set inside the outer shell. The cooling pipes are mostly arranged in layers, with rows staggered. There are a large number of cooling pipes, which occupy a large number of the air circulation chamber inside the motor cooler, increasing the air resistance outside the cooling pipes and slowing down the air circulation flow rate, which in turn leads to low heat exchange efficiency.

[0003] For example, Chinese patent CN204947809 discloses a motor cooler structure, including: a cooler outer shell and a cooling pipe arranged in an internal accommodating cavity of the cooler outer shell, and also including a positive plate which divides the cooler shell internal cavity into a refrigeration cycle cavity and a cold air inlet cavity; the bottom plate of the cooler outer shell is located at the refrigeration cycle cavity and is provided with a motor hot air inlet connected to one end of the refrigeration cycle cavity and a post-circulation cold air outlet connected to the other end of the refrigeration cycle cavity; wherein the cooling pipe is matched with the mounting holes on the positive plate and is installed to present an "M" shape distribution as a whole; a conical guide plate is arranged in the gap between each two adjacent columns of mounting holes presenting an "M" shape distribution as a whole, wherein each two adjacent conical guide plates are arranged with their tips facing each other.

[0004] However, the above-mentioned prior art cools the cooling pipe by air, cools down the hot air generated by clicking, and the obtained cold air circulation cools down the motor. This method has a low cooling effect on the hot air; and the cooled cold air is cooled from one end of the motor, which has a poor overall cooling effect on the motor, and easily causes the situation where the motor is cold at the head and hot at the tail. Utility Model Content

[0005] The purpose of the utility model is to provide a vertical motor backpack cooling structure in order to overcome the defects of the prior art that the cooling gas is a single cycle, the cooling effects at both ends of the motor are inconsistent, and the cold air passing into the cooling pipe has a poor cooling effect on the hot air.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A vertical motor backpack cooling structure is used for cooling the motor, the cooling structure comprises a circulation shell and a water heat exchanger, the circulation shell is fixed on one side of the motor;

[0008] A chamber partition is provided inside the circulation shell, and the circulation shell includes a first cold air chamber, a cooling chamber, and a second cold air chamber which are connected in sequence. An air inlet and two air outlets are provided on the side of the circulation shell contacting the motor, and the air outlets are symmetrically arranged on both sides of the air inlet. The cooling chamber is connected to the motor rotor side through the air inlet, and the first cold air chamber and the second cold air chamber are respectively connected to the two ends of the motor through the air outlet; the water heat exchanger is fixed in the cooling chamber, and the water heat exchanger matches the shape of the air inlet; fans are provided in the first cold air chamber and the second cold air chamber.

[0009] Preferably, the water heat exchanger includes a fixed frame, a copper fin hot water exchange pipe, a water inlet and a water outlet, the copper fin hot water exchange pipe is fixed on the fixed frame, one end of the copper fin hot water exchange pipe is connected to the water inlet, and the other end is connected to the water outlet, the fixed frame is fixed on the circulation shell, and the copper fin hot water exchange pipe is located in the cooling chamber.

[0010] Preferably, the copper fin hot water exchange pipe is vertically fixed in the cooling chamber, and the water inlet is located at the lower end of the copper fin hot water exchange pipe.

[0011] Preferably, the water heat exchanger is also provided with a float type leakage alarm for monitoring the sealing of the copper fin water exchange water pipe, and the float type leakage alarm is fixed on the fixed frame.

[0012] Preferably, there are multiple float-type leakage alarms.

[0013] Preferably, a first thermometer is provided on the first cold air cavity, a second thermometer is provided on the cooling cavity, and a third thermometer is provided on the second cold air cavity.

[0014] Preferably, the chamber partition includes a guide arc plate, the guide arc plate is located in the cooling chamber, the guide arc plate includes a guide conical end head, and the guide conical end head is facing the middle position of the water heat exchanger.

[0015] Preferably, a plurality of partitions are provided in the motor, and the partitions are fixed around the air inlet to form a drainage channel matching the shape of the air inlet.

[0016] Preferably, a dividing plate is further provided in the motor, the dividing plate is vertically arranged, and the dividing plate is fixed in the middle position of the drainage channel.

[0017] Preferably, a plurality of bolt holes are provided at one end of the circulation housing that contacts the motor, and the circulation housing is connected to the motor by bolts.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] (1) This solution forms a circulation of air in the motor and the circulation housing by rotating the fans in the first cold air chamber and the second cold air chamber. Driven by the fans, the heat generated during the operation of the motor heats the surrounding air. The hot air enters the cooling chamber from the air inlet and is cooled by the water heat exchanger. The cooled cold air enters the first cold air chamber and the second cold air chamber on both sides of the cooling chamber, and is cooled from both ends of the motor through the air outlet, thus forming a circulation.

[0020] The hot air is cooled by a water heat exchanger, which has higher heat exchange and cooling effects than an air heat exchanger. After the hot air enters the cooling chamber through the air inlet for cooling, it is guided into the two ends of the motor through the first cold air chamber and the second cold air chamber on both sides of the cooling chamber, forming a symmetrical air path internal circulation, with good consistency in the temperature at the motor end and good overall cooling effect of the motor.

[0021] (2) The water heat exchanger in the present application uses copper fin hot water pipes, so that the heat exchanger can achieve a larger heat exchange area in a smaller space, thereby improving the cooling effect of hot air, and the copper fin hot water pipes are arranged regularly to reduce the resistance to air flow and facilitate air circulation.

[0022] (3) Considering that the cooling effect of the coolant in the copper fin water exchanger water pipe will be reduced after one heat exchange, the present application sets the copper fin water exchanger water pipe vertically and sets the water inlet at the lower end of the copper fin water exchanger water pipe, so that the coolant flows in a bottom-in and top-out manner, thereby ensuring that the saturation of the coolant in the copper fin water exchanger water pipe is high, the heat exchange efficiency is high, and the overall heat exchange effect of the hot air is improved.

[0023] (4) When the motor runs too fast, the heat exchange power of the water heat exchanger may not correspond to the heat generated by the motor. The present application sets corresponding thermometers in the cooling chamber corresponding to the air inlet and the first cold air chamber and the second cold air chamber corresponding to the two air outlets. By comparing the thermometers, the heat exchange power of the heat exchanger can be obtained. When the cooling power is low, the heat exchange power of the water heat exchanger can be changed by adjusting the coolant flow rate of the water heat exchanger, which can ensure the cooling effect on the motor. It has strong adaptability and is easy to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the motor backpack cooling structure provided by the utility model;

[0025] Figure 2 A cross-sectional view of the cooling structure provided by the utility model;

[0026] Figure 3 A front view of the circulation housing provided by the utility model;

[0027] Figure 4 A cross-sectional view of a water heat exchanger provided by the utility model;

[0028] In the figure: 1. motor, 2. circulation shell, 3. water heat exchanger, 4. float leakage alarm, 11. partition, 12. channel plate, 21. chamber partition, 22. first cold air chamber, 23. cooling chamber, 24. second cold air chamber, 25. air inlet, 26. air outlet, 27. fan, 28. bolt hole, 31. fixed frame, 32. copper fin hot water exchange pipe, 33. water inlet, 34. water outlet, 41. first thermometer, 42. second thermometer, 43. third thermometer, 211. guide arc plate, 212. guide conical end. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] Example 1

[0036] like Figures 1 to 3 As shown, this embodiment provides a vertical motor backpack cooling structure for cooling a motor 1, the cooling structure includes a circulation housing 2 and a water heat exchanger 3, and the circulation housing 2 is fixed on one side of the motor 1;

[0037] A chamber partition 21 is provided inside the circulation shell 2, and the circulation shell 2 includes a first cold air chamber 22, a cooling chamber 23 and a second cold air chamber 24 which are connected in sequence. An air inlet 25 and two air outlets 26 are provided on the side of the circulation shell 2 contacting the motor, and the air outlets 26 are symmetrically arranged on both sides of the air inlet 25. The cooling chamber 23 is connected to the motor rotor side through the air inlet 25, and the first cold air chamber 22 and the second cold air chamber 24 are respectively connected to the two ends of the motor 1 through the air outlets 26; the water heat exchanger 3 is fixed in the cooling chamber 23, and the shape of the water heat exchanger 3 matches that of the air inlet 25; fans 27 are provided in the first cold air chamber 22 and the second cold air chamber 24.

[0038] Working principle: The fans 27 in the first cold air chamber 22 and the second cold air chamber 24 rotate to circulate the air in the motor 1 and the circulation housing 2; driven by the fan 27, the heat generated during the operation of the motor 1 heats the surrounding air, and the hot air enters the cooling chamber 23 from the air inlet 25 and is cooled by the water heat exchanger 3. The cooled cold air enters the first cold air chamber 22 and the second cold air chamber 24 on both sides of the cooling chamber 23, and is cooled from both ends of the motor 1 through the air outlet 26, thus forming a cycle.

[0039] This solution forms a circulation of air in the motor 1 and the circulation housing 2 by rotating the fan 27 in the first cold air chamber 22 and the second cold air chamber 24; driven by the fan 27, the heat generated during the operation of the motor 1 heats the surrounding air, and the hot air enters the cooling chamber 23 through the air inlet 25, and is cooled by the water heat exchanger 3. The cooled cold air enters the first cold air chamber 22 and the second cold air chamber 24 on both sides of the cooling chamber 23, and cools the motor from both ends of the motor 1 through the air outlet 26, thus forming a circulation. Cooling the hot air by the water heat exchanger 3 has a higher heat exchange effect and cooling effect than the air heat exchanger, and after the hot air enters the cooling chamber 23 through the air inlet for cooling, it is guided into the two ends of the motor 1 through the first cold air chamber 22 and the second cold air chamber 24 on both sides of the cooling chamber 23, respectively, to form a symmetrical air path internal circulation, the temperature consistency of the motor end is good, and the overall cooling effect of the motor 1 is good.

[0040] As a preferred implementation mode, Figure 4 As shown, the water heat exchanger 3 includes a fixed frame 31, a copper fin hot water exchange pipe 32, a water inlet 33 and a water outlet 34. The copper fin hot water exchange pipe 32 is fixed on the fixed frame 31, one end of the copper fin hot water exchange pipe 32 is connected to the water inlet 33, and the other end is connected to the water outlet 34. The fixed frame 31 is fixed on the circulation shell 2, and the copper fin hot water exchange pipe 32 is located in the cooling chamber 23.

[0041] The water heat exchanger uses copper fin hot water pipes, which enables the heat exchanger to achieve a larger heat exchange area in a smaller space, thereby improving the cooling effect of hot air. The copper fin hot water pipes are arranged regularly to reduce the resistance to air flow and facilitate air circulation.

[0042] Furthermore, the copper fin hot water exchange pipe 32 is vertically fixed in the cooling chamber 23, and the water inlet 33 is located at the lower end of the copper fin hot water exchange pipe 32. The water heat exchanger 3 is also provided with a float type leakage alarm 4 for monitoring the sealing of the copper fin hot water exchange pipe 32, and the float type leakage alarm 4 is fixed on the fixed frame 31. There are multiple float type leakage alarms 4, which are used to ensure the sealing of the water heat exchanger 3 and the safety of the entire device.

[0043] Taking into account that the cooling effect of the coolant in the copper fin water exchanger water pipe will be reduced after one heat exchange, the present application sets the copper fin water exchanger water pipe vertically and sets the water inlet at the lower end of the copper fin water exchanger water pipe, so that the coolant flows in a bottom-in and top-out manner, ensuring that the saturation of the coolant in the copper fin water exchanger water pipe is high, the heat exchange efficiency is high, and the overall heat exchange effect of the hot air is improved.

[0044] As a preferred embodiment, Figure 2As shown, the first cold air chamber 22 is provided with a first thermometer 41 , the cooling chamber 23 is provided with a second thermometer 42 , and the second cold air chamber 24 is provided with a third thermometer 43 .

[0045] Corresponding thermometers are respectively arranged in the cooling chamber corresponding to the air inlet and the first cold air chamber and the second cold air chamber corresponding to the two air outlets. By comparing the thermometers, the heat exchange power of each heat exchanger can be obtained. When the cooling power is low, the heat exchange power can be changed by adjusting the coolant flow rate of the water heat exchanger, thereby ensuring the cooling effect of the motor. It has strong adaptability and is easy to adjust.

[0046] Optionally, the chamber partition 21 includes a guide arc plate 211, the guide arc plate 211 is located in the cooling chamber 23, the guide arc plate 211 includes a guide conical end 212, and the guide conical end 212 is facing the middle position of the water heat exchanger 3.

[0047] The motor 1 is provided with a plurality of partitions 11, which are fixed around the air inlet 25 to form a drainage channel matching the shape of the air inlet 25. The motor 1 is also provided with a channel dividing plate 12, which is vertically arranged and fixed in the middle of the drainage channel.

[0048] By providing a drainage channel and using a dividing plate 12 to separate the channel into two channels corresponding to the first cold air chamber 22 and the second cold air chamber 24, the symmetry and flow smoothness of the circulating air in the device are improved.

[0049] Specifically, a plurality of bolt holes 28 are provided at one end of the circulation housing 2 that contacts the motor 1 , and the circulation housing 2 is connected to the motor 1 by bolts.

[0050] In this embodiment, the motor model is YE3-112M-4-H, the parameters are 4KW, 400V, 50Hz, X2, the heat exchange power of the water heat exchanger 3 in the cooling structure is 50KW, and the water flow rate in the copper fin heat exchange water pipe 32 is 8m 3 / h, the water temperature is less than or equal to 38℃, the operating water pressure is 0.2-0.6MPa, the cold air temperature at the air outlet 26 is lower than 45℃, and the air volume is 2.3m 3 / s, during the operation of the motor, the cooling structure can effectively cool the motor.

[0051] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A vertical motor backpack cooling structure, used for cooling a motor (1), characterized in that: The cooling structure comprises a circulation shell (2) and a water heat exchanger (3), wherein the circulation shell (2) is fixed on one side of the motor (1); The circulation shell (2) is provided with a chamber partition (21) inside, and the circulation shell (2) includes a first cold air chamber (22), a cooling chamber (23) and a second cold air chamber (24) which are connected in sequence. The side of the circulation shell (2) contacting the motor is provided with an air inlet (25) and two air outlets (26), and the air outlets (26) are symmetrically arranged on both sides of the air inlet (25). The cooling chamber (23) is connected to the motor rotor side through the air inlet (25), and the first cold air chamber (22) and the second cold air chamber (24) are respectively connected to the two ends of the motor (1) through the air outlet (26); the water heat exchanger (3) is fixed in the cooling chamber (23), and the shape of the water heat exchanger (3) matches that of the air inlet (25); fans (27) are provided in the first cold air chamber (22) and the second cold air chamber (24).

2. A vertical motor backpack cooling structure according to claim 1, characterized in that: The water heat exchanger (3) comprises a fixed frame (31), a copper fin hot water exchange pipe (32), a water inlet (33) and a water outlet (34); the copper fin hot water exchange pipe (32) is fixed on the fixed frame (31); one end of the copper fin hot water exchange pipe (32) is connected to the water inlet (33) and the other end is connected to the water outlet (34); the fixed frame (31) is fixed on the circulation shell (2); and the copper fin hot water exchange pipe (32) is located in the cooling chamber (23).

3. A vertical motor backpack cooling structure according to claim 2, characterized in that: The copper fin hot water exchange pipe (32) is vertically fixed in the cooling chamber (23), and the water inlet (33) is located at the lower end of the copper fin hot water exchange pipe (32).

4. A vertical motor backpack cooling structure according to claim 2, characterized in that: The water heat exchanger (3) is also provided with a float-type leakage alarm (4) for monitoring the sealing of the copper fin water exchange water pipe (32); the float-type leakage alarm (4) is fixed on the fixed frame (31).

5. A vertical motor backpack cooling structure according to claim 4, characterized in that: The number of the float-type leakage alarms (4) is multiple.

6. A vertical motor backpack cooling structure according to claim 1, characterized in that: The first cold air chamber (22) is provided with a first thermometer (41), the cooling chamber (23) is provided with a second thermometer (42), and the second cold air chamber (24) is provided with a third thermometer (43).

7. The vertical motor backpack cooling structure according to claim 1, characterized in that: The chamber partition (21) comprises a flow-guiding arc plate (211), the flow-guiding arc plate (211) is located in the cooling chamber (23), the flow-guiding arc plate (211) comprises a flow-guiding conical end head (212), and the flow-guiding conical end head (212) faces the middle position of the water heat exchanger (3).

8. The vertical motor backpack cooling structure according to claim 1, characterized in that: A plurality of partitions (11) are arranged inside the motor (1), and the partitions (11) are fixed around the air inlet (25) to form a drainage channel matching the shape of the air inlet (25).

9. A vertical motor backpack cooling structure according to claim 8, characterized in that: A dividing plate (12) is also provided inside the motor (1), and the dividing plate (12) is arranged vertically. The dividing plate (12) is fixed at the middle position of the drainage channel.

10. The vertical motor backpack cooling structure according to claim 1, characterized in that: A plurality of bolt holes (28) are provided at one end of the circulation housing (2) that contacts the motor (1), and the circulation housing (2) is connected to the motor (1) via bolts.

Images