CN207638494U - A New Air-Water Cooler Structure for High Power Density Box Motor - Google Patents

Abstract

The utility model discloses a kind of novel air/water cooler structures of high power density box type electrical machine, it include the cooler above electric machine stand, the exhaust vent and air inlet hole being connect with cooler are equipped at the top of electric machine stand, the cooler includes cooler casing, the bottom of cooler casing is equipped with air inlet with the exhaust vent corresponding position, and cooler casing bottom is equipped with gas outlet with the air inlet hole corresponding position；Cooler casing, which is internally located above the air inlet, is equipped with cooling tube group, cooling tube group is made of the cooling tube being arranged in array, and cooling tube is arranged along motor vertical shaft axis direction, the tube body of cooling tube is externally provided with fin structure, leads to coolant liquid in the tube body of cooling tube；Cyclic annular wind deflector is equipped between cooling tube group and air inlet.The utility model has the advantages that heat dissipation capacity is greatly and efficient.

Description

A New Air-Water Cooler Structure for High Power Density Box Motor

technical field

The utility model belongs to the technical field of motor cooling, in particular to a novel air-water cooler structure for a box-type motor with high power density.

Background technique

At present, domestic box-type motor ventilation systems mostly use air-to-air coolers, relying on external fans or forced fans to provide air power sources, resulting in an increase in the number of forced fans, high manufacturing costs, and high energy consumption, which affects the energy-saving effect of the motor. The external wind path is limited by the structure of the motor, the utilization rate of wind energy is low, and most of the wind energy is dissipated in the atmosphere as kinetic energy.

The existing air-water cooler is limited by the type of cooling structure. The air-water cooler is mostly used in the ventilation system of the symmetrical air path structure of the motor, and the cooled air inside the cooler reduces the flow speed and flows slowly in a limited space. Reduce cooling effect. With the increase of the motor capacity, the electromagnetic load becomes larger, and the temperature rise of the winding is greatly increased. Affected by the thermophysical properties of the air, if the motor continues to increase the power level, the air will not be able to exchange heat in time to remove heat and cause the temperature rise of the winding. To a certain extent, it cannot meet the requirements of motor ventilation and heat dissipation.

Utility model content

The purpose of this utility model is to provide a new type of air-water cooler structure for high-power-density box-type motors with large heat dissipation capacity and high efficiency in order to solve the shortcomings of the current air-to-air cooling box-type frequency conversion motor.

In order to solve the above technical problems, the utility model adopts the following technical scheme: a new air-water cooler structure for high power density box-type motors, including a cooler installed above the motor frame, and a cooling device connected to the cooler on the top of the motor frame An air outlet and an air inlet, the cooler includes a cooler housing, the bottom of the cooler housing is provided with an air inlet corresponding to the air outlet, and the bottom of the cooler housing is corresponding to the air inlet There is an air outlet; the inside of the cooler shell is located above the air inlet, and a cooling tube group is pierced. The cooling tube group is composed of cooling tubes arranged in an array, and the cooling tubes are arranged along the direction perpendicular to the axis of the motor shaft. The outer body of the cooling pipe is provided with a fin structure, and the cooling liquid is passed through the inner body of the cooling pipe; between the cooling pipe group and the air inlet, there is an annular air deflector that guides the airflow from the air inlet to the cooling pipe group, and the cooling pipe A horizontal air guide channel is formed between the group and the top of the cooler shell, and a longitudinal air guide channel is formed between the cooler shell and the outer side of the annular air guide plate. The air outlet passes through the corresponding longitudinal air guide channel and the horizontal air guide channel. connected;

The airflow generated in the motor base enters the cooler through the air outlet and the air inlet, and in the cooler, the airflow passes through the annular air deflector to guide the cooling tube group, and the airflow cooled by the cooling tube group passes through the horizontal air guide channel and The longitudinal air guide channel exits the cooler from the air outlet and enters the motor frame again through the air inlet hole.

The cooler housing 71 is provided with a water receiving tank structure below the cooling tube group, the water receiving tank structure includes two water receiving plates arranged at intervals in the upper part, and a water receiving tank located in the middle of the lower part of the two water receiving plates , the two water receiving plates are arranged obliquely towards the water receiving tank, and the end of the water receiving tank is connected with a drain joint leading to the outside of the cooler shell.

The water receiving tank is arranged obliquely from the head end to the tail end.

An axial flow ventilation device is also provided in the cooler housing.

The axial flow ventilation device includes an axial flow ceiling fan arranged at the longitudinal air guiding channel.

The axial flow ceiling fan is hoisted on the cooler shell through a support rod.

The annular air deflector has a cone structure with one end small and the other end large, and the large mouth end cover of the annular air deflector is arranged on the air outlet hole of the motor frame.

The fin structure includes multi-layer fins uniformly arranged along the axial direction of the cooling tube, and each layer of fins diffuses outward along the direction perpendicular to the axial direction of the cooling tube.

The beneficial effects of the utility model are:

(1) The cooler adopts a water-cooling system, and adds a fin structure outside the cooling tube to increase the local surface heat transfer coefficient, which can quickly transfer the heat inside the motor to the outside of the motor, strengthen the internal heat transfer, and effectively reduce the internal winding of the motor. Temperature rise, good heat dissipation effect, and improve the service life of the motor.

(2) The setting of the axial flow ventilation device can overcome certain internal air path resistance, improve its flow state, change the flow direction of the internal air flow, and circulate back to the stator and rotor cavity of the machine base along both sides of the cooler. The flow speed can strengthen the internal heat exchange and take away more heat inside the motor.

(3) The axial flow ventilation device includes an axial flow ceiling fan arranged at the longitudinal air guide channel. To a certain extent, this structure can even allow the rotor of a small-capacity motor to not use a fan, saving materials and costs, and at the same time reducing the mechanical loss of the motor , improve motor efficiency.

(4) The utility model patent not only reduces the manufacturing cost of the motor, but also has the advantages of light weight, large heat dissipation capacity, high efficiency, energy saving, noise reduction, environmental protection, and convenient use and maintenance.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The specific embodiment of the present utility model will be described in detail below in conjunction with the accompanying drawings. The arrows in Fig. 1 indicate the direction of air flow.

As shown in Figure 1, a new air-water cooler structure for a high power density box-type motor of the present invention includes a cooler installed above the motor frame 3, and the motor frame 3 has a stator 2 and a rotor 1 inside. The top of the motor base 3 is provided with an air outlet hole and an air inlet hole connected to the cooler, and the cooler includes a cooler housing 7, and the bottom of the cooler housing 7 is provided with an air inlet corresponding to the air outlet hole. The bottom of the cooler housing 7 is provided with an air outlet corresponding to the air inlet; the inside of the cooler housing 7 is located above the air inlet and is provided with a cooling tube group 4, and the cooling tube group 4 is formed in an array Arranged cooling pipes, and the cooling pipes are arranged along the direction perpendicular to the axis of the motor shaft, the outer body of the cooling pipe is provided with a fin structure, and the inner body of the cooling pipe passes through the cooling liquid. The fin structure includes multi-layer fins uniformly arranged along the axis of the cooling tube, and each layer of fins diffuses outward along the direction perpendicular to the axis of the cooling tube (the cooling tube and the fins are not shown in the drawings).

Between the cooling pipe group 4 and the air inlet, there is an annular air deflector 10 that guides the airflow from the air inlet to the cooling pipe group 4. The annular air deflector 10 is a cone structure with a small end and a large end. The big mouth end cover of shaped wind deflector 10 is located on the air outlet. A horizontal air guide channel is formed between the cooling tube group 4 and the top of the cooler housing 7, a longitudinal air guide channel is formed between the cooler housing 7 and the outer 10 side of the annular air guide plate, and the air outlet passes through the corresponding longitudinal guide The air passage communicates with the transverse air guide passage.

The airflow generated in the motor frame 3 enters the cooler through the air outlet and the air inlet, and in the cooler, the airflow passes through the annular air deflector 10 and leads to the cooling pipe group 4, and the airflow cooled by the cooling pipe group 4 passes through the horizontal The air guide channel and the longitudinal air guide channel discharge the cooler from the air outlet and enter the motor frame 3 again through the air inlet hole.

The cooler housing 7 is provided with a water receiving tank structure below the cooling tube group 4. The water receiving tank structure includes two water receiving plates 8 arranged at intervals in the upper part and horizontally spaced apart, and a middle position located at the lower part of the two water receiving plates 8. The water receiving tank 9, the two water receiving plates 8 are arranged obliquely towards the water receiving tank 9, and the end of the water receiving tank 9 is connected with a drain joint 11 leading to the outside of the cooler housing 7.

The condensed water condensed on the cooling tube group 4 first drops on the water receiving plate 8 or directly drops into the water receiving tank 9, and the condensed water dripping on the water receiving plate 8 flows obliquely and drops into the water receiving tank 9, Then it is discharged from the drain joint 11 together with the condensed water in the water receiving tank 9 . The gaps reserved between the water receiving plates 8 and between the water receiving plates 8 and the water receiving tank 9 are used for the air flow to pass through, which ensures the smooth flow of the air flow, and at the same time ensures the effect of receiving and draining the condensed water.

The water receiving tank 9 is arranged obliquely from the head end to the tail end to facilitate drainage.

The cooler housing 7 is also provided with an axial flow ventilation device, the axial flow ventilation device includes an axial flow ceiling fan 5 arranged at the longitudinal air guide passage, and the axial flow ceiling fan 5 is hoisted on the cooler casing 7 through a support rod 6 . To a certain extent, this structure can even allow the rotor of a small-capacity motor to not use a fan, which saves materials and costs, and at the same time reduces the mechanical loss of the motor and improves the efficiency of the motor.

Compared with the previous motor ventilation system, the utility model adopts a water-cooling system, and adds a fin structure outside the cooling pipe to increase the local surface heat transfer coefficient, and can quickly transfer the heat inside the motor to the outside of the motor, strengthening Internal heat transfer can effectively reduce the temperature rise of the internal winding of the motor, and the heat dissipation effect is good, which improves the service life of the motor.

And the setting of the axial flow ventilation device can overcome a certain internal air resistance, improve its flow state, change the direction of internal air flow, and circulate back to the stator and rotor chambers of the machine base along both sides of the cooler. By increasing the air flow speed To strengthen the internal heat exchange, take away more heat inside the motor.

The utility model patent not only reduces the manufacturing cost of the motor, but also has the advantages of light weight, large heat dissipation capacity, high efficiency, energy saving, noise reduction, environmental protection, and convenient use and maintenance.

The above embodiments are only used to illustrate and not limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present utility model shall fall within the scope of the claims of the present utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom" etc. are based on the The orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be interpreted as a reference to the utility model. Limitations on New Types of Protected Content.

Claims (8)

1. A new type of air-water cooler structure for high-power-density box-type motors, including a cooler installed above the motor frame, and the top of the motor frame is provided with an air outlet hole and an air inlet hole connected to the cooler. It is characterized in that: The cooler includes a cooler housing, the bottom of the cooler housing is provided with an air inlet corresponding to the air outlet hole, and the bottom of the cooler housing is provided with an air outlet corresponding to the air inlet hole; The inside of the casing is located above the air inlet, and a cooling tube group is pierced. The cooling tube group is composed of cooling tubes arranged in an array, and the cooling tubes are arranged along the direction perpendicular to the axis of the motor shaft. The cooling pipe has a sheet structure, and the cooling liquid is passed through the pipe of the cooling pipe; between the cooling pipe group and the air inlet, there is an annular air deflector that guides the airflow from the air inlet to the cooling pipe group, and between the cooling pipe group and the top of the cooler shell. A horizontal air guide channel is formed between them, a longitudinal air guide channel is formed between the cooler shell and the outer side of the annular air guide plate, and the air outlet communicates with the horizontal air guide channel through the corresponding longitudinal air guide channel; The airflow generated in the motor base enters the cooler through the air outlet and the air inlet, and in the cooler, the airflow passes through the annular air deflector to guide the cooling tube group, and the airflow cooled by the cooling tube group passes through the horizontal air guide channel and The longitudinal air guide channel exits the cooler from the air outlet and enters the motor frame again through the air inlet hole. 2. The novel air-water cooler structure for high power density box-type motors as claimed in claim 1, characterized in that: the cooler housing 71 is provided with a water receiving tank structure below the cooling tube group, and the water receiving tank structure It includes two water receiving plates arranged at intervals in the upper part and a water receiving tank located in the middle of the lower part of the two water receiving plates. The two water receiving plates are inclined towards the water receiving tank, and the end of the water receiving tank is connected with a guide cooler shell External drain connection. 3. The novel air-water cooler structure for high power density box-type motors according to claim 2, characterized in that: the water receiving tank is arranged obliquely from the head end to the tail end. 4. The novel air-water cooler structure for high power density box-type motors according to any one of claims 1-3, characterized in that: an axial flow ventilation device is also provided in the cooler housing. 5. The novel air-water cooler structure for high power density box-type motors according to claim 4, characterized in that: the axial flow ventilation device includes an axial flow ceiling fan arranged at the longitudinal air guiding channel. 6. The novel air-water cooler structure for high power density box-type motors according to claim 5, characterized in that: the axial flow ceiling fan is hoisted on the cooler shell through a support rod. 7. The novel air-water cooler structure for high power density box-type motors according to claim 1, characterized in that: the annular air deflector is a cone structure with one end small and the other end large, and the annular air guide The large mouth end cover of the plate is arranged on the air outlet hole of the motor base. 8. The novel air-water cooler structure for high power density box-type motors according to claim 1, characterized in that: the fin structure includes multi-layer fins uniformly arranged along the axial direction of the cooling tube, and each layer of fins The sheets all spread out along the direction perpendicular to the axis of the cooling tube.