JPH0673392U - Magnet pump - Google Patents

Abstract

(57) [Summary] [Purpose] High heat from the pump part of the magnet pump
It is to prevent transmission to the motor side. [Structure] A cooling vane 12 is arranged around the magnet rotor 6 of the motor part 2 of the magnet pump 1, and a cooling air blowout hole is provided in a case 13 outside the cooling vane 12. The holes 18 are provided to allow effective cooling without air stagnation on the outer peripheral portion of the magnet rotating body 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sealless magnet pump.

[0002]

[Prior art]

 Traditionally, sealless magnet pumps have been used to deliver hot water and chemical solutions.

[0003]

[Problems to be solved by the device]

 Recently, magnet pumps have also been used to deliver chemicals such as LiBr aqueous solution that evaporates at low temperatures. However, since this chemical reaches a high temperature of 100 to 140 ° C, high heat is applied to the motor side. Was a problem, and the magnetic attraction was reduced.

In the conventional magnet pump, a fan is arranged at the rear part of the motor, or a motor cooling blade is integrally arranged on the rotor to deal with the problem. More appropriate means were required for such usage conditions.

[0005]

[Means for Solving the Problems]

 The present invention has been made in view of the above points, and in order to solve the above problems, in a magnet pump in which a vane body of a pump unit is rotatable by magnetic attraction of a magnet rotating body of a motor unit. The magnet is characterized in that a cooling vane is arranged around the rotor of the magnet of the motor, and a blowout hole for cooling air is opened in the case outside the cooling vane. To provide a pump.

[0006]

[Action]

 When the magnet pump of the present invention is used, cooling vanes are arranged on the peripheral portion of the magnet rotor of the motor part, and cooling air blowout holes are opened in the case outside the cooling vanes. Due to the perforation, when the motor is driven and the vane body of the pump part is rotated by magnetic attraction, the cooling vanes on the peripheral part of the magnet rotor are used to inject outside air into the rear part of the case. The outside air can be sucked in from and the cooling air can be discharged from the blowout holes of the case outside the magnet rotor.

Therefore, even when a high temperature fluid is handled by the sealless pump section, the high temperature air does not stagnate in the magnet rotating body section on the outer peripheral section of the sealless pump section, and it is possible to cool it satisfactorily and the temperature to the motor section is increased. You can effectively prevent the transmission. Further, the pump unit can be rotationally driven by attracting the magnetic force without lowering the magnetic force of the magnet.

[0008]

【Example】

 Hereinafter, the present invention will be described based on embodiments. FIG. 1 and the following figures show an embodiment of the present invention. In the magnet pump 1, as shown in FIG. 1, a cylindrical magnet rotating body 5 is axially attached to the rotating shaft 4 of the rotor 3 of the motor unit 2, and the motor unit 2 and the pump unit 6 are connected to each other. The blade body 8 of the pump portion 6 is magnetically attracted and rotated by way of a partition wall 7 recessed in a predetermined shape between them.

As shown in FIGS. 2 to 4, the magnet rotating body 5 axially attached to the rotating shaft 4 of the rotor-3 has an arc-shaped permanent magnet 10 inside a cylindrical body 9 of aluminum light metal. The poles and the N poles are arranged alternately, and the vane body 8 is rotated by attracting the magnet material 11 provided inside the vane body 8 of the pump portion 6 described above.

Further, a corner portion of the outer peripheral portion of the magnet rotating body 5 is provided in a stepped manner, and the cooling blades 12 are arranged in an axially symmetrical manner so as to slightly project to the bottom side and the outside as shown in the figure. Then, by rotating the magnet rotor 5 by the motor unit 2, the cooling blades 12 are rotated, and the air does not stagnate in the outer peripheral portion of the partition wall 7, and the outer peripheral portion of the partition wall 7 is circulated well. The peripheral portion of the magnet rotating body 5 can be cooled.

Then, as shown in FIG. 1, a cooling air inflow hole 15 is opened in the rear end surface portion 14 of the case 13 covering the motor portion 2, and the cooling air is blown in the bearing support wall 16 inside. Of the cooling vanes 12 and a blowout hole 18 for the cooling air on the outer peripheral surface of the case 13 on the outer side of the cooling vane 12 to let outside air pass through the motor section 2. It is arranged so that the high heat on the pump section 6 side is not transferred to the motor section 2 side by sucking it and flowing out from the blowout hole 18 on the side peripheral surface. Reference numeral 19 is a motor cooling blade attached to the end of the rotor-3.

However, even if the pump portion 2 is in a high temperature state by circulating the LiBr aqueous solution by using the magnet pump 1 configured as described above for air conditioning, the motor portion 2 rotates the magnet. When the body 5 is driven to rotate, the outside air is sucked by the cooling vanes 12 on the outer periphery of the body 5 from the cooling air inflow hole 15 on the rear end side of the case 13 as shown by the arrow in FIG. The cooling air is blown out from the cooling air blow hole 18 in the side peripheral portion as shown by an arrow to prevent the air from stagnating on the outer peripheral portion of the partition wall 7, and the cooling can be performed. Transmission can be effectively prevented, and the magnetic force of the magnet can be rotated and driven.

Since the motor cooling blade 19 is also provided on the rotor 3 of the motor unit 2, the above-described cooling air inflow is also caused by the motor cooling blade 19. Outside air can be sucked in through the holes 15 to be distributed, and cooling air can be further distributed to enhance the cooling effect of the motor part.

In the above description, the cylindrical body of the magnet rotating body and the cooling blade are integrally die-cast with an aluminum material, but they may be integrally resin-molded with an engineer plastic material.

Further, although the corner portion of the magnet rotating body is provided in a stepped manner and the cooling blade having a slightly wide width is arranged, the cooling blade having a thin width or the cylindrical body is provided on the outer peripheral surface of the cylindrical body. It is also possible to project spirally the cooling blades on the end face, or to combine these. Furthermore, the outer peripheral surface of the magnet rotating body may be made uneven to increase the surface area and enhance the cooling effect.

In the above, the handling of the fluid of the LiBr aqueous solution that is in a high temperature state has been described, but the present invention can be similarly applied to conventional hot water and other fluids.

[0017]

[Effect of device]

 As described above, according to the present invention, the cooling vanes are arranged around the magnet rotating body of the motor part, and the cooling air blowout holes are provided on the outside of the cooling vanes. Since the holes are opened, even if a high-temperature fluid is handled, the high-temperature air does not stagnate on the outer peripheral portion of the partition between the motor section and the pump, and cooling can be performed with cooling air. Therefore, the high temperature heat of the pump section can be effectively prevented from being transferred to the motor section, and the durability of the magnet pump can be improved. Further, the magnetic force of the magnet does not decrease, and the pump unit can be rotatably driven.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention with a part omitted.

FIG. 2 is a cross-sectional view of a magnet rotating body provided with the above cooling blades,

FIG. 3 is a left side view of the magnet rotating body of the above,

FIG. 4 is a right side view of the magnet rotating body of the above.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Magnet pump 2 ... Motor part 5 ... Magnet rotating body 6 ... Pump part 7 ... Blade vehicle body 10 ... Permanent magnet 11 ... Magnet material 12 ... Cooling blade 13 ... Case 18 ... Blowout hole

Claims (1)

[Scope of utility model registration request] 1. A magnet pump in which a vane body of a pump unit is rotatable by magnetic attraction of a magnet rotor of the motor unit, wherein cooling vanes are provided around the magnet rotor of the motor unit. A magnet pump characterized in that it is provided with cooling air blow-out holes on the outside of the cooling vanes.