KR200147552Y1 - Two-way pump - Google Patents

Abstract

The present invention relates to a bidirectional pump structure employed in a gas boiler, and more particularly, a bidirectional pump that circulates the heating water and changes the flow of the heating water in the heating mode or the hot water mode does not operate smoothly by foreign objects. And a bidirectional pump structure in which water hammer does not occur.

In the present invention, the casing 40 having the inlet 8a formed at the center in the axial direction, and the outflow pipe 41 having the outlet 8b, 8c at each end in the axially perpendicular direction, respectively, the casing. Impeller 24 installed in the interior of the 40, the motor 25 for forward and reverse rotation of the impeller 24, the first passage respectively formed toward both outlets (8b) (8c) in the space around the impeller 25 In the bidirectional pump including a 31 and a second passage 32, a partition wall 42 separating both outlets 8b and 8c is formed at the center of the outlet pipe 41, and the first passage is formed. When the water flows out through the passage 31 or the second passage 32, some water flows strongly toward the opposite second passage 32 or the first passage 31 to block the passage. 43 is formed in the said partition 42. It is characterized by the above-mentioned.

Description

Bidirectional Pump Structure

The present invention relates to a bidirectional pump structure employed in a gas boiler, and more particularly, a bidirectional pump that circulates the heating water and changes the flow of the heating water in the heating mode or the hot water mode does not operate smoothly by foreign objects. And a bidirectional pump structure in which water hammer does not occur.

1 is a schematic configuration diagram of a general gas boiler employing a bidirectional pump having a function of circulating heating water among various types of gas boilers and changing the flow of heating water in heating mode or hot water mode.

The illustrated gas boiler has a gas inlet pipe 1 through which external gas is introduced, a gas valve 2 installed on the gas inlet pipe 1 to regulate a pressure of a gas supplied to a burner, and the gas inlet pipe ( 1) the burner (3) which burns by mixing the gas and air introduced through the combustion, the flue (4) which discharges the burned exhaust gas, and the burner (3) sucks air and forcibly exhausts the flue gas at the same time The exhaust fan 5 is included.

In addition, the gas boiler is a water tank for temporarily storing the heating water returned as installed on the heating return pipe (6), the heating return pipe (6) to return the heating water from the heating pipe (not shown) in the room to be heated. (7), a bidirectional pump for circulating the heating water (8), a heat exchanger (9) for heating the heating water, a heating water supply pipe (10) for supplying the heated heating water to the heating pipe, a water supplement to replenish the heating water Tube 11, supplemental water valve 12 installed on the water supplement pipe 11, direct water supply pipe 13 for supplying direct water to the heat exchanger 9 when using hot water, hot water for discharging hot water heated in the heat exchanger Supply pipe 14, and a flow switch (15) for detecting the flow of direct water when using hot water is configured.

The gas boiler as described above works as follows.

The heating water is circulated by the bidirectional pump (8), which is returned from the heating pipe of each room through the heating return pipe (6), and temporarily stored in the water tank (7), and then enters the heat exchanger (9). The heating water is heated by the combustion heat of the gas in the heat exchanger (9), and then is supplied to each heating pipe through the heating water supply pipe (10) via the bidirectional pump (8).

Then, when hot water is used, the direct water enters the heat exchanger 9 through the direct water supply pipe 13 and is heated by heat exchange with the heating water in the heat exchanger 9 and then supplied to the user through the hot water supply pipe 14. At this time, the flow switch 15 detects the flow of direct water and outputs a signal to the controller that the user is using hot water.

In the hot water mode as described above, the bidirectional pump 8 has a rotational direction opposite to that of the heating mode. At this time, the heating water from the heat exchanger 9 does not circulate into the piping in each room through the heating water supply pipe 10. The flow direction is changed by the pump 8 and enters the heat exchanger 9 again through the bypass pipe 16.

Therefore, the heating water in the heat exchanger 9 maintains a high temperature, and thus the heat exchanger 9 performs hot water heating efficiently.

As described above, the bidirectional pump 8 is configured to operate in opposite directions in the heating mode and the hot water mode, and the structure and operation principle of the conventional bidirectional pump 8 will be described.

2 is a side sectional view of the bidirectional pump 8, and FIG. 3 is a front sectional view of the bidirectional pump.

As shown, the bidirectional pump 8 has a casing 21 in which inlets 8a are formed at the center in the axial direction, and outlets 8b and 8c are formed at both sides in the axial direction, respectively. Impeller 24 installed in the casing 21, the motor 25 for rotating the impeller 24 forward and reverse, the first passage 31 formed from the impeller 24 toward the outlets 8b and 8c, respectively. ) And the second passage 32, the sleeves 28 and 28 'having opening and closing holes 28a and 28'a respectively inserted into the outlets 8b and 8c, and the two It is arranged in the ball installation space 29 between the sleeves 28 and 28 ', and according to the heating mode or the hot water mode, the opening and closing hole 28a or 28' of either of the two sleeves 28 and 28 '. It consists of opening and closing ball 30 to close a).

When the bidirectional pump 8 is installed in the boiler, as shown in FIG. 1, the outlet 8b is located at the bottom and the outlet 8c is located at the top. And the bidirectional pump (8) acts as follows.

In the heating mode, as shown in FIG. 3, the impeller 24 is rotated clockwise by the motor 25. When the impeller 24 rotates in the clockwise direction, the pressure of water flowing into the ball installation space 29 through the first passage 31 is greater than the pressure of water flowing into the ball installation space 29 through the second passage 32. Since the opening and closing ball 30 moves toward the opening and closing hole 28'a to close the opening and closing hole 28'a and open the opposite opening and closing hole 28a.

Therefore, in this state, the heating water flows from the heat exchanger 9 to the bidirectional pump 8 through the inlet 8a and then to the heating water supply pipe 10 through the outlet 8b.

In the hot water mode of the boiler, the impeller 24 rotates counterclockwise. When the impeller 24 rotates counterclockwise, the pressure of the water flowing into the ball installation space 29 through the second passage 32 is the pressure of the water flowing into the ball installation space 29 through the first passage 31. Since the opening and closing ball 30 moves toward the opening and closing hole 28a to close the opening and closing hole 28a, and opens and closes the opening and closing hole 28'a on the opposite side.

Therefore, in this state, the heating water flows from the heat exchanger 9 to the bidirectional pump 8 through the inlet 8a and then to the bypass pipe 16 through the outlet 8c.

As described above, the bidirectional pump 8 has a rotational direction opposite to that of the hot plate mode and the hot water mode, so that the opening / closing ball 30 moves to change the flow of heating water.

As described above, the conventional bidirectional pump 8 closes the opening / closing hole 28'a by moving the opening / closing ball 30 located in the ball installation space 29 up and down according to the rotational direction of the impeller 24. The opening and closing hole 28a in the lower portion is closed to change the flow of the heating water.

However, the conventional bidirectional pump 8 has a problem in that when the foreign matter is present in the ball installation space 29, the shangdong of the opening and closing ball 30 is not smooth, and thus the water flow cannot be changed smoothly.

In addition, when switching from the heating mode to the hot water mode and the switching from the hot water mode to the heating mode, the opening / closing ball 30 moves at a high speed to rapidly open the opening / closing hole 28a of the lower part or the opening / closing hole 28'a of the upper part. Since the water is shut off rapidly, the flow of water is cut off rapidly, causing water hammering, which causes noise. This water hammer sounds every time it is switched to heating mode or hot water mode during boiler operation, which is very annoying to the user.

The present invention was devised to solve the above-mentioned problems of the prior art, and prevents a phenomenon in which a foreign body is caught in a ball installation space and the operation of both pumps is not smooth and is also adopted in a boiler to switch from a heating mode to a hot water mode or It is an object of the present invention to provide a bidirectional pump structure in which water hammer does not occur in the bidirectional pump when switching from the hot water mode to the heating mode.

The bidirectional pump structure of the present invention for achieving the above object is the inlet is formed in the center of the axial direction, the casing is formed with an outlet pipe having an outlet at each end in the axial direction, respectively, the impeller installed in the casing And a bidirectional pump including a motor for forward and reverse rotation of the impeller, and a first passage and a second passage respectively formed at both outlets in the space around the impeller, wherein a partition wall is formed at the center of the outlet pipe to separate both outlets. When the water flows out through the first passage or the second passage, a portion of the water is strongly sprayed toward the second passage or the first passage on the opposite side, and a water curtain passage is formed in the partition wall to block the passage. It is characterized by being.

1 is a schematic configuration diagram of a general gas boiler employing a bidirectional pump;

2 is a side cross-sectional view of a conventional bidirectional pump;

3 is a front sectional view of the bidirectional pump of FIG.

Figure 4 is a side cross-sectional view showing the configuration of the bidirectional pump of the present invention,

5 is a front sectional view of the bidirectional pump of FIG.

Explanation of symbols for main parts of the drawings

1: gas inlet pipe 2: gas valve

3: burner 4: year

5: exhaust fan 6: heating return pipe

7: water tank 8: circulation pump

9: heat exchanger 10: heating water supply pipe

11: Water refill pipe 12: Refill water valve

13: direct water supply pipe 14: hot water supply pipe

15: flow switch 16: bypass tube

24: impeller 25: motor

29: ball installation space 30: opening and closing ball

31: First passage 32: Second passage

40: casing 41: outlet pipe

42: bulkhead 43: water curtain passage

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

4 is a cross-sectional view showing the configuration of the bidirectional pump of the present invention, Figure 5 is a front sectional view of the bidirectional pump of FIG.

As shown, the bidirectional pump structure of the present invention has an inlet 8a formed at the center in the axial direction, and an outlet tube 41 having outlets 8b and 8c respectively formed at both ends in the axial direction. Casing 40, an impeller 24 installed inside the casing 40, a motor 25 for forward and reverse rotation of the impeller 24, and both outlets 8b in the space around the impeller 24 ( The 1st channel | path 31 and the 2nd channel | channel 32 which were formed in 8c direction, respectively are comprised.

In the bidirectional pump structure of the present invention, a partition wall 42 separating the two outlet ports 8b and 8c is formed at the central portion of the outlet pipe 41, and the first passage 31 or the second passage 32 is formed. The water curtain passage 43 is formed in the partition 42 so as to block the second passage 32 or the first passage 31 on the opposite side by strong water flow when the water flows out. Both sides of the partition wall 42 are streamlined so that water flows through the first passage 31 or the second passage 32 toward the outlet port 8b or the outlet port 8c on both sides thereof, and receives a large resistance. The recessed part is formed.

The action of the bidirectional pump structure of the present invention configured as described above is as follows.

When the boiler is operated in the heating mode, the impeller 24 rotates clockwise by the motor 25, and the heating water flows to the outlet pipe 41 through the first passage 31 to the outlet port 8b. . When the boiler is operated in the hot water mode, the impeller 24 rotates counterclockwise, and the heating water flows to the outlet pipe 41 through the second passage 32 and flows to the outlet port 8c.

As described above, when the heating water flows through the first passage 31 or the second passage 32, some heating water passes through the water curtain passage 43 to the second passage 32 or the first passage 31 on the opposite side. It is strongly sprayed to form a water curtain to close the passage. Therefore, the heating water can be almost prevented from flowing toward the outlet pipe 41 through the second passage 32 or the first passage 31 on the opposite side.

As described above, the bidirectional pump of the present invention changes the rotational direction of the impeller 24 without using the opening / closing ball 30 as in the conventional case, so that the heating water flows in both directions, thereby changing the flow direction of the heating water. There is no water hammer and no malfunction.

In addition, since recesses are formed on both side surfaces of the partition wall 42, the heating water smoothly receives no large resistance when flowing to the outlet port 8b or the outlet port 8c through the first passage 31 or the second passage 32. Flow.

In this specification, the bidirectional pump of the present invention has been described only when the gas boiler is employed, but it can be used not only for the gas boiler but also for other devices.

As described above, according to the bidirectional pump structure of the present invention, when the direction of water flow is changed, the operation is smooth and water hammer does not occur.

Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that various changes or modifications can be made within the spirit and scope of the present invention. It will have to belong to the claims.

Claims (2)

The casing 40 and the casing 40 in which the inlet 8a is formed in the center of the axial direction, and the outflow pipes 41 having the outlets 8b and 8c are formed at both ends in the axial perpendicular direction, respectively. Impeller 24 installed in the interior of the motor 25, the motor 25 for forward and reverse rotation of the impeller 24, the first passage 31 formed in each of the outlet port 8b (8c) in the space around the impeller 25, respectively And in the bidirectional pump comprising a second passage (32), The partition 42 which separates both outflow openings 8b and 8c in the center part of the said outflow pipe 41 is formed, When water flows out through the first passage 31 or the second passage 32, some water flows strongly toward the opposite second passage 32 or the first passage 31 to block the passage. The curtain passage 43 is formed in the partition wall 42, characterized in that the bidirectional pump structure. The method according to claim 1, wherein a large resistance is received when flowing toward both the outlet port 8b or the outlet port 8c through the first passage 31 or the second passage 32 on both sides of the partition 42. Two-way pump structure characterized in that each of the streamlined recesses are formed to flow.