Motor rotator structure of hot water circulating pump
Provided is a motor rotator structure of a hot water circulating pump. The structure includes a metal pipe whose interior is empty, a rotator core, and sealing caps. The rotator core is inserted into the metal pipe. The sealing caps are fitted into both sides of the rotator core, respectively. The metal pipe is inwardly rolled at both ends such that the sealing caps are compressed and fixed to the rotator core.
The present application claims priority of Korean patent application No. 2005-22597 filed on Mar. 18, 2005, the content of which is incorporated herein by reference.
FIELD OF THE INVENTIONThe present invention relates to a motor rotator of a hot water circulating pump, and more particularly, to a motor rotator structure of a hot water circulating pump, for preventing water penetration into a rotator.
BACKGROUND OF THE INVENTIONAs well known in the art, a hot water circulating pump, a unit for driving an impeller by motor power and forcibly supplying hot water to each use, is being variously used in a whole industry.
A construction of a conventional hot water circulating pump is shown in
Referring to
However, the conventional hot water circulating pump 100 causes the following drawback in use.
The hot water (a) introduced into the impeller housing 120 is introduced even into the motor housing 114. Accordingly, the rotator 116 positioned inside the motor housing 114 is always exposed to the hot water (a). In other words, in view of the above characteristic, the rotator 116 has to have a water leakage prevention function for preventing moisture penetration. However, due to absence of the water leakage prevention function, the conventional rotator 116 has a drawback of, with lapse of time, corroding their internal constituent parts and losing their functions.
SUMMARY OF THE INVENTIONAccordingly, the present invention is directed to a motor rotator structure of a hot water circulating pump that substantially overcomes one or more of the limitations and disadvantages of the conventional art.
One object of the present invention is to provide a motor rotator structure of a hot water circulating pump, for preventing water penetration into a rotator.
Another object of the present invention is to provide a motor rotator structure of a hot water circulating pump, for preventing disengagement of a sealing cap from both ends of a rotator core.
A further object of the present invention is to provide a motor rotator structure of a hot water circulating pump, in which a sealing cap is formed of silicon having excellent water-tightness.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims as well as the appended drawings.
To achieve the above and other objects and advantages, and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a motor rotator structure of a hot water circulating pump, the structure including: a metal pipe whose interior is empty; a rotator core inserted into the metal pipe; and sealing caps fitted into both sides of the rotator core, respectively, wherein the metal pipe is inwardly rolled at both ends such that the sealing caps are compressed and fixed to the rotator core.
In the motor rotator structure, washers are attached to outer surfaces of the sealing caps.
Any one of a drawing method and a seaming method may be selected and used as a method for inwardly rolling the metal pipe.
In other words, in the present invention, the rotator has a water leakage prevention function so that, in use, hot water is prevented from being penetrated into the rotator core and constituent parts of the rotator are prevented from being corroded or damaged.
It is to be understood that both the foregoing summary and the following detailed description of the present invention are merely exemplary and intended for explanatory purposes only.
BRIEF DESCRIPTION OF THE DRAWINGSThe accompanying drawings, which are included to aid in understanding the invention and are incorporated into and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts.
Rotator to be later described, one of constituent parts of a motor installed at a hot water circulating pump, rotates by a power source applied from a stator, and rotates a shaft connected to an impeller and drives the impeller. A construction of the motor installed at the hot water circulating pump is in detail disclosed in Korean Patent Application No. 20-2005-0003934 which is entitled “Hot water circulating pump” filed on Feb. 15, 2005 by this applicant.
Referring to
Sealing caps 16, main constituent elements of the present invention, are fitted to both sides of the through-hole 14a of the rotator core 14, respectively. The sealing caps 16 seal the metal pipe 12, and prevent water penetration into the rotator core 14. It is desirable that the sealing cap 16 is formed of silicon having excellent water-tightness.
The sealing caps 16 performing the above function are compressed and fixed to both sides of the rotator core using a drawing method described below. In other words, as shown in
The washers 18 are attached to both ends of the sealing cap 16. In use, the washer 18 performs a function of preventing the sealing cap 16 from being disengaged from the rotator core 14. It is desirable that the washer 18 is selectively used depending on a size of the motor. In other words, in a large size motor, there is a concern of disengaging the sealing cap 16 due to weight of the rotator core 14. Therefore, the washer 18 is desirably employed to prevent disengagement of the sealing cap 16.
A manufacture process of the above constructed rotator installed at the motor of the hot water circulating pump will be described with reference to
As shown in
After that, as shown in
As described above, the inventive motor rotator of the hot water circulating pump accomplishes the following effects.
First, the present invention has an effect of, in use, preventing the penetration of hot water into the rotator core positioned inside the metal pipe and maximizing the water-tightness against the water leakage, by sealing and constructing the metal pipe forming an external shape of the rotator, using the sealing cap.
Further, the present invention has an effect of, in use, preventing the disengagement of the sealing cap to the outside by attaching the washer to the outer surface of the sealing cap, and more increasing the water-tightness by using silicon as material of the sealing cap.
While the present invention has been described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents
Claims
1. A motor rotator structure of a hot water circulating pump, the structure comprising:
- a metal pipe whose interior is empty;
- a rotator core inserted into the metal pipe, and
- sealing caps fitted into both sides of the rotator core, respectively,
- wherein the metal pipe is inwardly rolled at both ends such that the sealing caps are compressed and fixed to the rotator core.
2. The structure according to claim 1, wherein washers are attached to outer surfaces of the sealing caps, respectively.
3. The structure according to claim 1, wherein the sealing caps are of silicon.
Type: Application
Filed: Mar 16, 2006
Publication Date: Apr 19, 2007
Inventor: Ki Kim (Milyang-City)
Application Number: 11/377,131
International Classification: F04B 35/00 (20060101);