KR100220407B1 - Hot circulation pump having flow direction - Google Patents

Abstract

The present invention relates to a hot water circulation pump having a channel switching housing for improving a pump housing in a hot water circulation pump applied to a heating and hot water supply system of a boiler system.

The present invention relates to a hot water circulation pump for discharging hot water by rotating an impeller (14) in a pump housing (31) by driving a rotary shaft (13) in a motor housing; The pump housing 31 has a first discharge pipe P1 and a second discharge pipe P2 formed outside the impeller 14 and the first discharge pipe P1, And the second discharge pipe (P2) are communicated with each other, a pendulous valve (32) for blocking the one-way flow path is fixed to the hinge pin (33) so as to reciprocate within a predetermined angular range.

Accordingly, the present invention provides a function of switching the flow path of the fluid to the hot water circulation pump by providing the pneumatic valve in the pump housing in the hot water circulation pump of the boiler system, thereby simplifying the piping system of the boiler, .

Description

Hot Water Circulation Pump with Euro Conversion Housing

The present invention relates to a hot water circulation pump, and more particularly, to a hot water circulation pump applied to a heating and hot water supply system of a boiler system, a pump housing is improved to add a function of switching the flow path of the fluid, To a hot water circulation pump having a housing.

FIG. 1 is a block diagram showing the inside of a conventional hot water circulation jump. FIG.

The hot water circulation pump 10 applied to the heating and hot water supply system of the boiler system has a structure in which the pump housing 11 and the motor housing 12 are hermetically assembled and integrated. The pump housing 11 has an eddy chamber formed therein and receives the impeller 14, and the motor housing 12 has a motor assembly for converting an electric force into a rotational force.

The motor assembly includes a rotating shaft 13, The rotor (17) The rotating shaft 13 press-fitted into the rotor 17 is supported by the upper bearing 15 and the lower bearing 16 and the upper end of the rotary shaft 13 is supported in the pump housing 11 by an impeller (14).

When the electric current is supplied through the terminal of the pump housing 11, the rotor 17 and the rotating shaft 13 are rotated by the electromagnetic force acting on the stator 18

The impeller 14 rotates and pumps the hot water. A portion of the hot water being pumped passes through the upper bearing 15 to the motor assembly and cools the rotor 17 and the stator 18.

Since the hot water circulating pump 10 according to this construction transfers the fluid in one direction, there is a disadvantage that a separate flow path switching valve must be provided in a boiler system which requires switching of the flow path.

2 shows a schematic illustration of a boiler system to which the pump of FIG. 1 is applied.

A typical boiler system is composed of a hot water pipe 24, a heating pipe 25, a replenishing tank 27 and the like, and the solenoid drive type three sides 26 (aka 3-way valve) .

When the hot water and the heating are both performed, the fluid discharged from the hot water circulation pump 10 flows along the flow path of the dotted line, Three sides (26) Heating Pipes (25) When the hot water is circulated to the hot water circulation pump 10 and only hot water is supplied, the fluid discharged from the hot water circulation pump 10 flows along the solid line, Three sides (26) And circulated to the hot water circulation pump 10.

In such a boiler system, if the function of the three sides 26 is performed by the hot water circulation pump 10, the piping is simplified and the wiring of the solenoid is unnecessary, so that the flow loss and power consumption of the fluid can be reduced, It is possible to reduce airflow.

Accordingly, the present invention provides a hot water circulation pump for a heating and hot water supply system of a boiler system, which improves the pump housing to provide a function of switching the flow path of the fluid, And the like.

FIG. 1 is a configuration diagram showing the inside of a conventional hot water circulation pump as an end.

Figure 2 is a schematic illustration of a boiler system to which the pump of Figure 1 is applied;

3 (a) and 3 (b) are diagrams for a conventional hot water circulation pump in which the pump housing of Fig. 1 is modified. Fig.

FIG. 4 is a view showing the inside of a pump housing of a hot water circulation pump according to the present invention; FIG.

Figure 5 is a schematic illustration of a boiler system to which the pump of Figure 4 is applied;

DESCRIPTION OF THE REFERENCE NUMERALS

10: Hot water circulation pump (Conventional) 11,21: Pump housing (Conventional)

12: motor housing 13: rotating shaft

14: impeller 14a: inlet

15: upper bearing 16: lower bearing

17: rotor 18: stator

22: diaphragm valve 23: ball valve

24: hot water piping 25: heating piping

26: Three sides 27: Supplementary tank

30: hot water circulation pump (present invention) 31: pump housing (present invention)

32: pendulous valve (invention) 32: hinge pin

P1: first discharge pipe P2: second discharge pipe

In order to achieve the above object, the present invention provides a hot water circulation pump for discharging hot water by rotating an impeller (14) in a pump housing (31) by driving a rotary shaft (13) in a motor housing, wherein the pump housing (31) A first discharge pipe P1 and a second discharge pipe P2 are formed so as to communicate with the outside of the first discharge pipe P1 and the second discharge pipe P2, And a pendulous valve (32) for blocking the flow passage is fixed to the hinge pin (33) so as to be reciprocatingly swingable within a predetermined angular range around the hinge pin (33).

At this time, the pendulous valve 32 is formed into a triangular cross-sectional structure having two sides and one side of the lower side, and the two corner portions of the lower end enter and exit the inside of the outer peripheral surface without interfering with the outer peripheral surface of the impeller 14. [

The hinge pin 33 is installed vertically upward from the center of rotation of the impeller 14 and supports the pendulous valve 32 so as to balance the symmetry.

[Example]

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 (a) and 3 (b) illustrate a method of providing the channel switching means in the hot water circulating pump 10 (FIG. 1) The configuration diagram for the circulation pump is shown.

The diaphragm valve 22 is provided between the first discharge pipe P1 and the second discharge pipe P2 as shown in Fig. 3 (a) Due to the action of the fluid reaction force due to the reverse rotation, a diaphragm made of a flexible rubber blocks the flow path on one side to change the flow path.

Such a structure tends to cause cavitation due to vortices near the outlet-side diaphragm of the fluid, and the external dimension thereof is relatively large.

3 (b) shows a state in which the ball valve 23 is provided between the first discharge pipe P1 and the second discharge pipe P2, The spherical body blocks one side of the flow path by the action of the fluid reaction force due to the reverse rotation, thereby changing the flow path.

This structure has no cavitation problem with the diaphragm valve 22, but can not switch the umbrella roll passage when foreign matter of the fluid accumulates on the sphere for a long period of time.

Therefore, it is preferable to avoid a flexible structure such as a diaphragm or a movable structure such as a sphere.

FIG. 4 is a schematic view showing the inside of a pump housing of a hot water circulation pump according to the present invention.

The present invention is applied to a hot water circulation pump for discharging hot water by rotating an impeller 14 in a pump housing 31 by driving a rotary shaft 13 in a motor housing. The electromagnetic valve 32 and the hinge pin 33, .

The hot water circulating pump 30 according to the present invention also includes a pump housing 31 having a swirl chamber formed therein and having an impeller 14 and a motor housing 10 having a motor assembly Tightly assembled and integrated into a structure.

In Figure 1, the motor assembly comprises a rotating shaft 13, The rotor (17) The rotor 17 is connected to the impeller 14 in the pump housing 31 at the upper end of the rotary shaft 13 which is press-fitted by the fitting.

According to the present invention, the pump housing 31 has a first discharge pipe P1 and a second discharge pipe P2 formed outside the impeller 14.

A suction port 14c is formed at the center of the impeller 14 having a plurality of blades and a first discharge pipe P1 and a second discharge pipe P2 are formed in a direction perpendicular to the suction port 14c. A first discharge pipe (P1) and a second discharge pipe (P2) are formed in a direction perpendicular to the suction port (14a). The fluid flowing into the suction port 14a is discharged into the first discharge pipe P1 or the second discharge pipe P2 while circulating in the pump housing 31. [

According to the present invention, a pendulous-type valve 32 for blocking the one-way flow path is disposed at a portion where the first discharge pipe (P1) and the second discharge pipe (P2) communicate with each other with a hinge pin As shown in Fig.

A pendulous valve 32 is proposed in which a flexible structure such as the above-described diaphragm or a movable structure such as a sphere is excluded, and only the merits thereof are combined. The pendulum type valve 32 can be regarded as adopting the right position of the diaphragm valve 22 and the rigid body structure of the ball valve 23.

At this time, the pendulous valve 32 is formed into a triangular cross-sectional structure having two sides and one side of the lower side, and the two corner portions of the lower end enter and exit the inside of the outer peripheral surface without interfering with the outer peripheral surface of the impeller 14. [

The pendulous valve 32 is not placed on the same plane as the impeller 14 but is installed in front of the impeller 14 to avoid interference. The inlet (jaws) of the first discharge pipe (P1) and the second discharge pipe (P2) are in contact with two corners of the pendulous valve (32) and function as a stopper Also.

The hinge pin 33 is installed vertically upward from the center of rotation of the impeller 14 and supports the pendulous valve 32 so as to balance the symmetry.

The hinge pin 33 is press-fitted into the body between the first discharge pipe P1 and the second discharge pipe P2 to seal the hinge pin 33. A ball joint mechanism (not shown) is used instead of the hinge pin 33 When sealing is not necessary.

In operation, when the impeller 14 rotates in one direction (for example, clockwise), fluid circulating in the pump housing 31 exerts a reaction force in the direction of the second discharge pipe P2 from the pendulous valve 32 The pendulum type valve 32 starts to rotate counterclockwise about the hinge pin 33.

At this time, since the left corner of the pendulous valve 32 starts to enter the inside of the outer peripheral surface of the impeller 14, the rotational speed of the pendulous valve 32 is further increased. Thus, it is discharged to the first discharge pipe P1.

Thereafter, when the impeller 14 rotates in the other direction (for example, counterclockwise), the reaction force of the fluid acts in the opposite direction and the first discharge pipe P1 is closed, so that the fluid is discharged to the second discharge pipe P2 .

5 shows a schematic illustration of a boiler system to which the pump of FIG. 4 is applied.

2 of the second drawing in which the three sides 26 of the solenoid drive system are connected by piping, which is constituted by the hot water circulation pump 10, the hot water pipe 24, the heating pipe 25, the replenishing tank 27, The hot water circulation pump 30, which omits three sides 26 in the boiler system and has the pendulous valve 32, is applied instead.

When the hot water and the heating are both performed, the fluid discharged from the hot water circulation pump 30 flows through the heating pipe 25 along the dotted line, Hot water pipelines (24) When the hot water is supplied only to the hot water circulating pump 30, the fluid discharged from the hot water circulating pump 10 is circulated to the hot water pipe 24 along the solid line.

In the latter case, the pendulous valve 32 (fourth view) of the hot water circulation pump 30 is operated by the reaction force of the fluid and the flow path on the side of the heating pipe 25 is shut off without operating the solenoid or the like .

As described above, the hot water circulation pump having the flow path switching housing of the present invention is a hot water circulation pump applied to the heating and hot water supply system of the boiler system. The pneumatic valve is installed in the pump housing to switch the flow path of the fluid to the hot water circulation pump Function is added so that the piping system of the boiler can be simplified and the related airflow can be saved.

Although the present invention has been shown and described with respect to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as set forth in the following claims Those skilled in the art will readily know what is known in the art.

Claims (3)

A hot water circulating pump for rotating a impeller (14) in a pump housing (31) by driving a rotating shaft (13) in a motor housing to discharge hot water, characterized in that the pump housing (31) A first discharge pipe P1 and a second discharge pipe P2 are formed and a pneumatic valve 32 for blocking a one-way flow path is provided at a portion where the first discharge pipe P1 and the second discharge pipe P2 communicate with each other Is fixed to the hinge pin (33) so as to reciprocate within a predetermined angular range about the hinge pin (33). The impeller (14) according to claim 1, wherein the pendulum valve (32) is formed in a triangular cross-sectional structure having two sides and one side of the lower side, Wherein the hot water circulation pump has a flow path switching housing which is connected to the hot water circulation pump. The hinge pin (33) according to claim 1, wherein the hinge pin (33) is provided in a vertical upward direction from a rotation center of the impeller (14), and the pendulum type valve (32) Hot water circulation pump with housing.