JPH06235399A - Pump used on land - Google Patents

Abstract

PURPOSE:To reduce the installation space, effectively utilize the space, easily apply the compact and effective soundproof application and facilitate maintenance and inspection for a cooling device, as for a pump used on the land which sends out the liquid which flows into the inflow port of a pump part from the effluence port of the pump part, by operating the pump part by a motor part. CONSTITUTION:The motor cylinder 2 of a motor part 1 is constituted of an excellent heat conductor, and the inner peripheral part is closely attached to the outer periphery of the motor cylinder 2, and a cooling device 21 which is constituted of the excellent heat conductor and allows the liquid which flows from the first opened port 22 to flow out from the second opened port 23 is installed in a demountable manner on the motor cylinder 2, and the second opened port 23 and the inflow port 12 of the pump part 11 are connected through a communication pipe 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a land pump which operates a pump section by a motor section and sends out a liquid flowing into an inlet of the pump section from an outlet of the pump section.

[0002]

2. Description of the Related Art In a conventional land pump as described above, a motor section and a pump section are exposed in the air. When electric power is supplied to the motor part of the land pump to operate it, the rotary vanes of the pump part rotate, so that the pump part pumps the liquid flowing into the inflow port by the rotary vane and sends it out from the outflow port. The heat released by the operation of the motor unit is dissipated to the atmosphere around the motor unit.

[0003]

Since the conventional land pump is of the air-cooled type as described above, the motor casing is made of a good heat conductor in order to efficiently dissipate the heat released by the operation of the motor section. In addition, the motor casing is provided with cooling fins, and the motor casing is provided with a large number of vent holes for heat radiation. Therefore, it is necessary to secure a space for heat radiation for circulating the air around the land pump to dissipate the heat of the motor unit, which increases the installation space and makes it impossible to effectively use the space. Also, in order to shield the operating noise of the motor from leaking to the outside, even if you try to cover the land pump with a soundproof box, for example, heat will be accumulated in the soundproof box and the space for heat dissipation described above will be secured. Considering that it must be done, it is difficult to provide a compact and effective soundproofing measure.

The present invention has been made in order to eliminate the above-mentioned inconvenience, and has a small installation space, the space can be effectively used, and a compact and effective soundproofing measure can be easily provided. It is possible to provide a land-based pump that can easily perform maintenance and inspection of the cooler.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a land pump for operating a pump section by a motor section and delivering a liquid flowing into an inlet of the pump section from an outlet of the pump section,
The motor cylinder that constitutes the motor casing of the motor section is made of a good thermal conductor, and the inner peripheral portion of the motor cylinder is in close contact with the outer periphery of the motor cylinder, and the liquid that flows in from the first opening is made to flow out of the second opening. Is provided, and the first opening and the outflow port or the second opening and the inflow port are connected by a communication pipe.

[0006]

In the land pump according to the present invention, the liquid flowing from the first opening to the second opening in the cooler serves as a heat transfer medium, and the liquid transfers the heat of the motor section conducted through the motor cylinder and the cooler. And then release.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the structure of a land pump which is an embodiment of the present invention. In FIG. 1, 1 is a motor unit,
Reference numeral 2 denotes a motor cylinder that constitutes the motor casing of the motor unit 1. The motor cylinder 2 is made of a good heat conductor, and is provided with a vent hole 2h for allowing air to flow therethrough and a wire to be inserted therethrough. Reference numeral 11 denotes a pump portion, which is provided with an inflow port 12 through which the liquid flows in and an outflow port 13 through which the liquid flows out. The motor shaft of the motor unit 1 and the pump shaft of the pump unit 11 are configured by one shaft, and the motor unit 1 and the pump unit 11 are coaxially configured.

Reference numeral 21 denotes a cooler composed of a good conductor of heat,
The inner peripheral portion is formed in a shape that is in close contact with the outer periphery of the motor cylinder 2, and a first opening 22 through which the liquid flows in and a second opening 23 through which the liquid flows out are provided. And cooler 2
1 is a predetermined means, for example, screwed to the motor cylinder 2,
It is detachably attached. Reference numeral 31 denotes a communication pipe made of a good heat conductor, one end of which is connected to the second opening 23,
The other end is connected to the inflow port 12. Ti indicates a water inlet pipe connected to the first opening 22, and To indicates a water outlet pipe connected to the outlet 13.

Next, the operation will be described. First, when electric power is supplied to the motor unit 1 to operate the motor unit 1, the pump unit 11 also operates. Then, when the pump unit 11 operates, the water as a liquid flowing from the water inlet pipe Ti into the first opening 22 of the cooler 21 passes through the cooler 21 to the second position.
The communication pipe 31 enters through the opening 23. Furthermore, the communication pipe 31
The entered water enters the pump unit 11 through the inflow port 12 and flows out through the discharge port 13 into the water outlet pipe To.

When electric power is supplied to the motor unit 1 to operate it as described above, heat is generated when electric energy is converted into kinetic energy, and this heat flows through the motor cylinder 2 and the cooler 21. The heat is conducted by being conducted to water, is radiated, and is radiated to the atmosphere around the motor unit 1 via the motor cylinder 2 and is radiated to the outside of the motor unit 1 by the air flowing in and out via the ventilation hole 2h.

Therefore, the heat of the motor unit 1 can be effectively dissipated without taking special cooling measures, so that it is not necessary to provide a heat dissipating space in the periphery, so that the installation space is reduced and the space is saved. It can be used effectively. Further, since the installation space is small, it can be housed in a compact box or a wall. Furthermore, since it is not necessary to secure a space for heat dissipation in the surroundings, it can be housed in a compact soundproof box, for example, in order to shield operating noise from leaking to the outside, so a compact and effective soundproofing measure can be taken. It can be applied easily. And the cooler 21
Is detachably attached to the motor cylinder 2,
Since the cooler 21 can be removed from the motor cylinder 2, the cooler 21 can be easily maintained and inspected. It should be noted that dew condensation does not occur inside the motor unit 1.

FIG. 2A is a plan view showing another example of the cooler, FIG. 2B is a front view of the cooler shown in FIG. 2A, and FIG. 3B is a front view of the cooler shown in FIG. 3A, and the same or corresponding parts to those in FIG. To do. Cooler 21 composed of a good thermal conductor in FIG.
2A, a first opening 22 is provided in the left side corner of the upper side of FIG. 2A in the axial direction, and a second opening 23 is formed in the right side corner of the lower side of FIG. 2A in the axial direction. Is provided.

Cooler 21B composed of a good thermal conductor shown in FIG.
At the left-hand corner of the upper side of FIG.
3 is provided, a second opening 23 is provided in the right side corner of the lower side of FIG. 3A in the axial direction, and a flow path 24 from the first opening 22 to the second opening 23 is provided as an axis. It is provided by being divided into a plurality of parts in the direction. Cooler 21A described above
Alternatively, any of the coolers 21B can be used to obtain the same effect as that of the cooler 21 of FIG.

FIG. 4 is a perspective view showing another embodiment of the land pump of the present invention, in which the pipe is shown partially broken.
Note that the same or corresponding parts as those in FIG. In FIG. 4, reference numeral 21C indicates a pipe made of a good heat conductor, which has a semicircular cross section so that the inner peripheral surface of the motor cylinder 2 is in close contact with the outer circumference of the motor cylinder 2 and is spirally wound around the outer circumference of the motor cylinder 2. Then, one end corresponding to the first opening is connected to the water inlet pipe Ti, and the other end corresponding to the second opening is connected to the communication pipe 31. Also in the embodiment of FIG. 4, the same effect as that of the embodiment of FIG. 1 can be obtained.

In the above embodiment, the inflow port 12 and the second opening 23 or the other end of the pipe 21C are connected to each other through the communication pipe 31.
In the example described above, the outlet 13 is connected to the first opening 22 or one end of the pipe 21C by the communication pipe 31, and the water inlet pipe Ti is connected to the inlet 12, and the second opening 23 is connected. Alternatively, the water outlet pipe To may be connected to the other end of the pipe 21C. Although the flow path 24 is divided into a plurality of parts in the axial direction, the flow path 24 may be divided in a direction orthogonal to the axial direction or may be formed to meander.

Further, the example of the coolers 21, 21A and 21B having a shape covering substantially half the circumference of the motor cylinder 2 has been described, but the range of covering the motor cylinder 2 with the coolers 21, 21A and 21B is as follows.
Needless to say, it may be less than half the circumference of the motor cylinder 2 or more than half the circumference as long as the cooling effect of the motor unit 1 is obtained. And when configuring a cooler with the pipe 21C,
The pipe 21C is provided with the function of the communication pipe 31, and the communication pipe 31
Can be omitted.

[0017]

As described above, according to the present invention, the motor cylinder is made of a good heat conductor, and the inner peripheral portion of the motor cylinder is in close contact with the outer circumference of the motor cylinder. A cooler composed of a good thermal conductor that flows out from the opening is provided.
Since the opening of the motor and the outlet of the motor section or the second opening and the inlet of the motor section are connected by a communication pipe, the heat generated in the motor section is conducted to the liquid through the motor cylinder and the cooler and is transferred. Is released.

Therefore, the heat of the motor can be effectively dissipated without taking special cooling measures, so that it is not necessary to provide a heat dissipating space around the motor, so that the installation space is reduced and the space is effectively used. Can be used for. Further, since the installation space is small, it can be housed in a compact box or a wall. Furthermore, since it is not necessary to secure a space for heat dissipation in the surroundings, it can be housed in a compact soundproof box, for example, in order to shield operating noise from leaking to the outside, so a compact and effective soundproofing measure can be taken. It can be applied easily. Since the cooler is detachably attached to the motor cylinder, the cooler can be removed from the motor cylinder, so that maintenance and inspection of the cooler can be easily performed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a land pump which is an embodiment of the present invention.

FIG. 2A is a plan view showing another example of the cooler, and FIG.
[Fig. 3] is a front view of the cooler shown in (a).

3A is a partially cutaway plan view showing still another example of the cooler, and FIG. 3B is a front view of the cooler shown in FIG. 3A.

FIG. 4 is a perspective view showing another embodiment of the land pump of the present invention.

[Explanation of reference numerals] 1 motor part 2 motor cylinder 2h vent hole 11 pump part 12 inflow port 13 outflow ports 21, 21A, 21B cooler 21C pipe 22 first opening 23 second opening 24 flow path 31 communicating pipe Ti input Water pipe To water pipe

Claims (2)

[Claims] 1. A land pump for operating a pump section by a motor section to deliver a liquid flowing into an inlet of the pump section from an outlet of the pump section, wherein a motor cylinder forming a motor casing of the motor section is provided. The cooler is made of a good thermal conductor, and the inner peripheral portion is in close contact with the outer periphery of the motor cylinder, and the cooler is made of a good thermal conductor that allows the liquid flowing from the first opening to flow out from the second opening. And the outflow port, or the second opening and the inflow port are connected by a communication pipe. 2. The land pump according to claim 1, wherein the cooler is detachably attached to the motor cylinder.