CN2247389Y

CN2247389Y - Water-cooled voltage-resistant motor

Info

Publication number: CN2247389Y
Application number: CN 95242286
Authority: CN
Inventors: 严志立
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-20
Filing date: 1995-10-20
Publication date: 1997-02-12
Anticipated expiration: 2005-10-20

Abstract

The utility model discloses a water-cooled withstand voltage motor, its characterized in that changes the winding wire footpath, reduces motor rated voltage to be less than standard voltage's voltage in the adaptation electric wire netting, be provided with a water cooling plant who doubles motor housing outside the stator, it has inlayer and skin, is the water cavity between the inlayer and the inlayer, has a delivery port on the water cavity, and the lower extreme has a water inlet. Because the water cooling device is adopted, the heat transfer is fast, the motor works at the standard voltage or higher than the standard voltage, and the generated heat can be taken away, so that the motor is suitable for a wider voltage range.

Description

The withstand voltage motor of water-cooled

The utility model relates to small AC motor.

Existing middle and small motor kind is a lot, uses also very extensively, and its primary structure is a shell, stator, and rotor, main shaft, bearing, heat abstractor for adapting to different purposes, is provided with some other parts again, to satisfy the demand on the basis of above-mentioned primary structure.The rated voltage of above-mentioned design of electrical motor is generally 220 volts or 380 volts.The heat abstractor of motor adopts air-cooled more, method is to establish fan at the main shaft afterbody, utilizes electric machine main shaft to rotate and drives the fan rotation, and air is flowed to head from the afterbody of motor, utilize air to take away the heat that motor produces because of work, thereby make the motor cooling.Otherwise motor persistently overheating too high can destroy the insulation of stator winding, causes burning out motor.The motor with air cooling main shaft drives the fan rotation, thereby makes the main shaft power output reduce 10%, that is to say motor only air-cooled one will loss 10% power.

Voltage in the electrical network is because various factors, when using electromechanical, stable the meeting the requirements of very difficult assurance voltage, but motor is again as power standard with rated voltage, often cause overload, make burn-down of electric motor, burn because of overtension causes motor overheating again sometimes because of voltage is low, under the general nervous situation of particularly present electric power, the electric power of use is lower than normal voltage mostly; Rural area particularly, voltage is lower than about 60 volts of normal voltages sometimes.That summarizes says, the weak point that above-mentioned motor exists is; 1, main shaft drives fan and makes power output reduction by 10%; 2, adaptation change in voltage scope is little.

The purpose of this utility model is to overcome the prior art weak point, provides a kind of water-cooled withstand voltage motor.

The utility model is the improvement on existing motor, the one, and the normal voltage of reduction motor is to adapt to supply voltage, energy operate as normal when being lower than normal voltage; The 2nd, change air-cooledly for water-cooled, utilize water than the air fast principle of conducting heat, it is normal or use when being higher than normal voltage to adapt to voltage, and concrete grammar is the line footpath that changes winding, line is directly adapted to increase slightly, reduces motor working voltage standard, to adapt to supply voltage; The water-cooled device of double as motor housing is set, and it wraps in the stator outside, and internal layer and skin are arranged, be water cavity between the ectonexine, in the water cavity upper end one delivery port arranged, there is a water inlet lower end, cold water enters from the lower end water inlet, flows out from the upper end delivery port, and the heat that machine operation produces is taken away.

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

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.

With reference to shown in Figure 1, primary structure of the present utility model is by bearing 1, end cap 2, stator 3, rotor 4, main shaft 7, water cooling plant 8 is formed, and water cooling plant 8 wraps in stator 3 outsides, and water cooling plant 8 is a chuck shape, internal layer and skin are arranged, water cavity 6 is arranged between internal layer and the skin, one delivery port 5 is arranged in the water cavity upper end, there is a water inlet 9 lower end, and water enters water cavity 6 from water inlet 9, be full of water cavity 6 after, flow out from delivery port 5, thereby the machine operation heat is taken away.With reference to shown in Figure 1, in water cavity 6, there are several to connect internal layer and outer field dowel 10, to strengthen the outer field rigidity of internal layer.With reference to shown in Figure 1, fluted 11 on end cap 2, O RunddichtringO 12 is housed in the groove 11, in case leak, end cap 2 usefulness screws 13 are fixed on the water cooling plant 8.The change method in motor winding wire footpath is, with 220 volts of existing rated voltages, the motor that power is 1.1 kilowatts is an example, and its line directly is 1.1 millimeters, now uses 1.2 millimeters line instead, thereby the rated voltage of motor is reduced to 160 volts; With 380 volts of rated voltages, power is example for 1.1 kilowatts again, and its line directly is 1.0 millimeters, now uses 1.1 millimeters instead, thereby the rated voltage of motor is reduced to 320 volts.By the above-mentioned line footpath that has changed winding; when supply voltage is lower than normal voltage; motor can normally use; normal or when being higher than normal voltage when supply voltage; owing to adopted water cooling plant, it is fast to transmit heat, and the heat that produces in the time of can be with machine operation is taken away; the heat that can produce because of voltage is high equally can operate as normal with burn-down of electric motor yet.

The utlity model has following advantage:

1, can adapt to wider voltage range, can be in 160-250 or 320 Use under-400 volts of situations.

2, change the air-cooled water-cooled that is, can make power output increase by 10% on former basis.

3, the change parts are few, and cost can not increase.

Claims

1, the withstand voltage motor of a kind of water-cooled is by bearing, end cap, and stator, rotor, main shaft constitutes, and it is characterized in that being provided with the chuck shape water cooling plant of double as motor housing, and it wraps in the stator outside.

2, the withstand voltage motor of a kind of water-cooled according to claim 1 is characterized in that chuck shape water cooling plant has internal layer and skin, and a water cavity is arranged between the ectonexine, and the water cavity upper end has delivery port, lower end that one water inlet is arranged.

3, the withstand voltage motor of water-cooled according to claim 1 is characterized in that establishing concave groove on the end cap, and O-ring seals is housed in the concave groove.