KR100379111B1 - A diverter for changing the flow routine in boiler - Google Patents

Abstract

Disclosed is a three-way flow channel which makes the opening and closing of the flow path into a hollow semi-cylindrical shape and the support shaft is assembled by straight processing to achieve a stable and immediate flow path by reducing the driving torque and making the movement quickly. It is about a valve.

In the present invention, since the support shaft is straight and unnecessary eccentric machining as in the related art, productivity is improved and production cost is reduced, as well as assembly with the opening and closing piece. In particular, the end of the support shaft is machined into a polygonal cross section or semi-circular section to be assembled with the opening and closing piece, which prevents waste from opening and closing. Therefore, driving stability can be secured. The adhesion is also improved to solve the problem of water leakage when closing. In addition, since the opening and closing piece is shaped into a half-moon-shaped cylinder and rotates in place to open the closed one side flow passage, while the curved portion performs the operation of closing the other side passage gradually, interlocking operation prevents water hammer and immediately drives responsiveness. Can be obtained and the conversion time can be shortened.

Description

A diverter for changing the flow routine in boiler

The present invention relates to a three-way flow path switching valve for switching and supplying hot water to a heating water and a hot water supply in a boiler. Particularly, the opening and closing piece for opening and closing the flow path is shaped into a hollow semi-cylindrical shape and fabricated by assembling the support shaft by straight processing. The present invention relates to a three-way flow path switching valve that can achieve a stable and instant flow path change by improving the performance and making the operation quick while reducing the driving torque.

Generally, a boiler is installed in a home or an office to use heating water and hot water. In order to use hot water heated in such a boiler as heating water or to switch hot water to hot water, a boiler is essentially provided with a flow path switching valve. The flow path switching valve has a three-way flow path, and thus is commonly called a three-way flow path switching valve.

1 is a view showing the structure of a conventional three-way flow path switching valve, Figure 1a is a cross-sectional view of the three-way flow path switching valve, Figure 1b is a perspective view of the opening and closing piece shown in Figure 1a. Referring to these drawings, the conventional three-way flow path switching valve will be described schematically. The three-way flow path switching valve heats hot water introduced into the inlet port 11 formed below the valve body 10 as shown in FIG. 1A. It is a valve for switching to be sent to the water or to send the hot water for use as hot water, the ball-type opening and closing piece 20 therein to stop driving every 180 ° to switch between the two ports. Of course, the ball-type opening and closing piece 20 is driven by a drive motor 30 fixed to the upper, this drive motor 30 is a slow-opening and built-in reducer (not shown), the ball-type opening and closing piece every 180 ° ( 20 is stopped to switch the heating flow passage 12 and the hot water supply passage 13 located on both sides to open and close.

Therefore, the upper end of the support shaft 40 of the ball-shaped opening and closing piece 20 is inserted into and coupled to the coupling groove 31 formed at the shaft end of the driving motor 30 to transmit the driving force. The ball-shaped opening and closing piece 20 and the shape of the support shaft 40, as shown in Figure 1b, the ball-shaped opening and closing piece 20 is formed into a spherical shape, the support shaft 40 is bent to the ball-shaped opening and closing piece The fixing portion 41 inserted into and fixed to the 20 is eccentric from the support shaft body 42. Accordingly, the support shaft 40 should form a bent eccentric fixing portion 41. For this reason, the support shaft 40 is to be processed into an eccentric shaft by cutting the circular rod shaft, which is difficult to process, takes a long production time, and is a factor that decreases productivity and increases the processing production cost. Furthermore, since the support shaft 40 is eccentric, assembly with the ball-type opening and closing piece 20 is slow, and assembling is poor, and the opening and closing piece 20 is spherical and the inside is full, so that the contraction force (elasticity) is small and rigid, and thus the airtightness with the flow path is tight. In addition to this fall, foreign matters contained in the hot water are not easily attached to the sphere and fall off so that the driving torque is increased, causing unnecessary power waste and failure of the driving motor. In particular, since the fixing portion 41 of the support shaft 40 and the fixing hole 21 of the opening and closing piece 20 are fitted to each other in a circular cross section, the driving force of the supporting shaft is not properly transmitted to the opening and closing piece when opening and closing on the support shaft. There was also a problem with the side being pushed back.

In addition, the opening and closing pieces 20 are spherical, moving along the path as shown by the dotted line in FIG. 1A in the working space, thereby opening and closing both flow paths, and of course, closing both flow paths on the intermediate path. There was also a closed end where a certain amount of hot water flowed out on both sides during operation.

Accordingly, an object of the present invention is to devise to solve the above-mentioned drawbacks, the opening and closing piece for opening and closing the flow path to form a hollow semi-cylindrical shape, and the support shaft is linearly processed by assembling the driving torque quickly while reducing the driving torque The present invention provides a three-way flow path switching valve that achieves stable and instant flow path switching.

Figure 1a and 1b is a view showing the structure of a conventional three-way flow path switching valve,

Figure 2a is an exploded perspective view of the three-way flow path switching valve according to the present invention,

Figure 2b is a combined perspective view of the three-way flow path switching valve according to the present invention,

Figure 3 is an exploded perspective view of the semi-cylindrical opening and closing piece shown in Figure 2a,

Figures 4a and 4b is a state of use showing the operation of the valve.

* Code descriptions for the main parts of the drawings

30: drive motor 31: axis

32: coupling groove 60: opening and closing piece

61: hollow 62: curved part

63: spherical projection 64: fixing hole

70: support shaft 71: coupling portion

72: fixing part 73,73a: fitting groove

80,80a: Fixed piece

The three-way flow path switching valve according to the present invention for achieving the above object is fixed in the valve body in the three-way flow path switching valve for switching the opening and closing of the heating flow path and the hot water supply flow path in the valve body by the rotational drive of the drive motor. A linear support shaft rotating upon receiving a driving force from the driving motor; And a semi-cylindrical opening and closing piece which is fixed on the support shaft and opens and closes the heating flow path and the hot water supply flow path.

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

Figure 2a is a separate perspective view of the three-way flow path switching valve according to the present invention, Figure 2b is a combined perspective view of the three-way flow path switching valve according to the present invention.

As shown, the three-way flow path switching valve drives the opening and closing piece 60 to supply hot water introduced into the inlet 11 to the heating water or to supply the hot water to the hot water. ) To open or close. The opening and closing piece 60 is located in the working space 14 in the valve body 10 and is located between the heating flow passage 12 and the hot water supply passage 13 facing each other. Therefore, the flow path on one side is always open, and the flow path on the other side thereof is closed. The opening and closing piece 60 has a semi-cylindrical shape, and a hollow 61 is formed therein, and a hemispherical spherical protrusion 63 protrudingly closes the flow path at a predetermined portion of the curved portion 62. The spherical protrusion 63 is in close contact with the heating channel 12 or the hot water supply channel 13 to maintain airtightness. In addition, since the hollow 61 is formed in the inside thereof, the contraction force is high when the contact is high, and the airtightness is further doubled by closely closing the flow path elastically.

The opening and closing piece 60 is fixed on the lower end of the support shaft 70, and thus the lower end of the support shaft 70 enters the opening and closing piece 60 to open and close the fixing piece 80 to the support shaft 70. The upper and lower portions of the piece 60 are regulated and fixed. The structure and coupling method of the opening and closing piece 60 and the support shaft 70 will be described in detail later with reference to FIG. 3. The support shaft 70 is coupled to the driving motor 30 fixed on the valve body 10 to receive power and rotate. To this end, the coupling groove 31 is formed in the shaft 32 of the driving motor 30, and the upper end of the support shaft 70 is inserted into the coupling groove 31. The engaging portion 71 of the support shaft 70 is semicircular and is inserted and fixed in the corresponding semicircular engaging groove 31. In this way, the rotation of the drive motor 30 is transmitted to the support shaft 70, and accordingly, the opening and closing piece 60 fixed to the support shaft 70 rotates every 180 ° and stops, thereby heating the heating passage 12 and The hot water flow passage 13 is switched. Of course, the position sensor (not shown) is built into the valve to detect the water supply to the heating passage 12 or the hot water supply passage 13 by opening or closing by driving the opening and closing piece 60 to the desired flow path.

3 is an exploded perspective view of the semi-cylindrical opening and closing piece shown in Figure 2a, the opening and closing piece 60 is a semi-cylindrical shape as shown in the hollow 61 is formed therein to double the shrinkage force elasticity when the close contact from the outside Will be given. Particularly, a semispherical spherical protrusion 63 protruding from the curved portion 62 of the semi-cylindrical opening / closing piece 60 to close and close the flow passage is in close contact with the heating flow path or the hot water supply flow path, thereby providing airtightness. Will improve.

The hollow 61 of the opening and closing piece 60 described above is divided into two by dividing the semi-cylinder, the fixing hole 64 is formed in the center side. The fixing hole 64 is a place where the support shaft 70 is inserted and fixed, and is formed of a rectangular cross-section hole. The fixing hole 64 is fixed to the fixing portion 72 formed at the lower end of the support shaft 70, this fixing portion 72 also forms a column of square cross section corresponding to the square cross section of the fixing hole 64 have. After inserting the fixing portion 72 of the support shaft 70 into the fixing hole 64 of the corresponding opening and closing piece 60, the fixing pieces 80 and 80a are inserted and fixed to the upper and lower portions thereof. To this end, circular fitting grooves 73 and 73a are formed at upper and lower sides of the fixing portion 72 of the supporting shaft 70, and the supporting shafts 80, 80a having a certain elasticity are pressed into the supporting shaft ( 70 is firmly fixed to the opening and closing piece (60). Of course, the fixing hole 64 of the opening and closing piece 60 and the fixing portion 72 of the support shaft 70 may be formed as a polygonal cross section such as a triangular cross section or a pentagonal cross section, in addition to the rectangular cross section. Even if the opening and closing piece 60 in the seam support shaft 70 can be prevented from running out, the purpose of preventing it from running out can be achieved. On the other hand, the coupling portion 71 of the semi-circular cross section is formed on the upper end of the support shaft 70 is inserted into the shaft of the drive motor (not shown) to receive the driving force.

4A and 4B are cross-sectional views illustrating the operation of the valve. FIG. 4A is a vertical cross-sectional view of FIG. 2B cut along the vertical direction, and FIG. 4B is a cross-sectional view of FIG. 4A taken along the A-A direction. In these two figures, the opening / closing piece 60 closes the one side flow path (left flow path) 12 in this valve in a solid line, and the opening and closing piece 60 closes the other flow path (right flow path) 13. The state is shown as an imaginary line. Of course, when the opening and closing piece 60 closes one flow path, the other flow path is opened so that hot water obtained from the lower inlet 11 is supplied toward the open flow path.

As shown in Figure 4a, when a command to change the flow is issued, the drive motor 30 is driven to output the rotational force through the speed reducer built therein. Then, the support shaft 70 coupled with the shaft 32 of the drive motor 30 is rotated, which is then closed by a solid line by turning the semi-cylindrical opening and closing piece 60 fixed at its end by 180 °. The one side passage 12 is opened and moves toward the opposite side passage to close the other side passage 13 as shown by the virtual line. Therefore, the hot water introduced through the inlet 11 formed below the valve body 10 is supplied along the open flow path. In this way, the heating flow path for supplying the heating water and the hot water supply flow path for supplying the hot water are alternately switched.

At this time, as can be seen in Figure 4b, the semi-cylindrical opening and closing piece 60 is rotated on the same axis as the axis of the support shaft 70, the curved portion 62 from the time when the closed passage is partially open. The other side of the channel gradually closes at the same time. Thus, by using the semi-cylindrical opening and closing piece 60 and the uneccentric straight support shaft 70 can reduce the operating space of the opening and closing piece 60 to reduce the size of the valve body 10, water hammer Since water is hardly generated, hot water can be prevented from being simultaneously supplied to two flow paths during the operation of the opening and closing piece 60, thereby shortening the flow path switching time and improving the operation efficiency.

As described above, the three-way flow path switching valve of the present invention is a hollow semi-cylindrical shape of the opening and closing pieces for opening and closing the flow path, and the support shaft is manufactured in a straight line to be assembled to reduce the driving torque quickly. It has the characteristics to enable stable and immediate euro conversion. In addition, since the support shaft is straight and unnecessary eccentric machining is unnecessary, the productivity is improved and the production cost is reduced, as well as the assembly with the opening and closing piece. In particular, since the end of the support shaft is processed into a polygonal cross section or a semi-circular section and assembled with the opening and closing piece, it has an advantage of preventing the opening and closing malfunction such as misoperation during opening and closing operation, thereby ensuring the stability of the opening and closing operation. In addition, since there is a hollow inside the opening and closing piece, the shrinkage force (elasticity) is good, and thus, the adhesion to the flow path is also improved, and the watertightness is doubled, thereby eliminating problems such as leakage of water when closing. In addition, the opening and closing piece is shaped as a half-moon cylinder and rotates in place to open the closed one side flow passage, while its surface part performs the operation of gradually closing the other side flow passage, thereby preventing water hammer and immediately driving responsiveness. It is possible to obtain and to shorten the switching time.

Claims (5)

In the three-way flow path switching valve for switching the heating flow path and the hot water supply flow path in the valve body by rotating the drive motor, A straight support shaft fixed in the valve body and rotating to receive a driving force from the driving motor; And In order to open and close the heating flow path and the hot water supply flow passage, it is fixed on the support shaft, forms a semi-cylindrical shape, forms a hollow penetrating in the longitudinal direction, and improves airtightness in the contact portion with the heating flow path and the hot water supply flow passage. Three-way flow path switching valve comprising an opening and closing piece forming a hemispherical spherical protrusion. delete delete According to claim 1, wherein the support shaft is inserted into the opening and closing piece has a fixing portion which can prevent the opening and closing piece from turning away from the shaft by the friction force during rotation, while the corresponding opening and closing piece also the square in which the fixing portion is inserted Three-way flow path switching valve characterized in that it forms a fixed hole of the cross section The method of claim 1 or claim 4, characterized in that the circular fitting grooves of a small cross section are formed in the lower part of the fixing part of the support shaft, and the fixing piece is inserted therein to regulate and fix the upper and lower ends of the opening and closing piece on the support shaft. Three-way flow path switching valve.