KR101142629B1 - Water cooling jacket type drain pump - Google Patents

Abstract

A channel-type drain pump is disclosed. The channel-type drain pump linearly reciprocates in a form in which a check valve is raised and lowered to prevent the discharged liquid from flowing backward. Therefore, the area of the flow path through which the liquid is discharged is not reduced by the check valve, and the liquid discharged is not interfered with by the check valve, thereby improving performance. In addition, a check valve is provided in the lower portion of the housing. This makes it possible to form a discharge hole for discharging air in the housing portion under the check valve, so the structure is simple. Therefore, the cost is reduced. In addition, since the check valve is provided in the lower portion of the housing, liquid is always present in the housing portion above the check valve. Due to this, the amount of liquid discharged to the outside of the housing when the pump is stopped during operation is small, and the amount of liquid that is initially introduced into the housing during the drive when the pump is stopped is small, so that the energy loss is small. And since the liquid which exists in the housing part upper side of a check valve cools a motor, the cooling performance of a motor improves. In addition, since some of the discharged liquid is discharged to the lower side of the housing through the discharge hole, foreign substances in the lower portion of the housing and the water tank in which the housing is installed are transferred together with the water, thereby preventing the accumulation of foreign substances.

Description

Water channel type drain pump {WATER COOLING JACKET TYPE DRAIN PUMP}

The present invention relates to a channel-type drain pump.

A drain pump refers to a pump that is immersed in water and discharges a liquid such as water. The pump is a water-cooled pump that cools a motor by using the discharged liquid.

1 is a cross-sectional view of a conventional channel-type drain pump, Figure 2a is an enlarged cross-sectional view of the check valve shown in Figure 1, Figure 2b is an enlarged perspective view of the air discharge valve shown in FIG.

As shown in FIG. 1, a housing 11 is provided, and a motor 20 is installed inside the housing 11. At this time, the side of the housing 11 and the side of the case 21 of the motor 20 has a gap.

The lower side of the motor 20 is provided with an impeller 13 coupled to the rotary shaft 23 of the motor 20 to rotate together with the rotary shaft 23. The impeller 13 discharges the liquid introduced into the housing 11 through the lower surface of the housing 11 to the outside of the upper surface of the housing 11 by force. At this time, the liquid transferred to the upper surface of the housing 11 by the impeller 13 cools the motor 20 while passing between the housing 11 and the case 21.

A check valve 30 is installed on the upper discharge pipe 11a side of the housing 11 to prevent the liquid discharged to the outside of the housing 11 from flowing back into the housing 11 when the impeller 13 is stopped. And, immediately below the check valve 30, the air discharge valve 40 is installed.

When the liquid flows into the housing 11 and the case 21 by the impeller 13 while the air flows into the housing 11 below the check valve 30, the liquid is compressed due to the compressed gas. It cannot be discharged upwards of the check valve 30. The air discharge valve 40 communicates with the inside and the outside of the housing 11 to function to discharge the air introduced into the housing 11 below the check valve 30 to the outside of the housing 11.

The check valve 30, as shown in Figure 2a, a fixed ring 31 coupled to the inner peripheral surface of the discharge pipe (11a), a ring-shaped base 33 coupled to the inner peripheral surface of the fixing ring 31 and fixed It is formed in the ring 31 and has an opening and closing plate 35 to open and close the open central portion of the base 33.

Due to this, the conventional water channel type drainage pump reduces the cross-sectional area of the discharge pipe 11a by the radial length of the fixing ring 31, and receives energy from the opening and closing plate 35 when the liquid is discharged, resulting in energy loss. . Therefore, there is a disadvantage in that performance is reduced.

As shown in FIG. 2B, the air discharge valve 40 has a cylindrical body 41 and a ball 43 that opens and closes the inside of the body 41. This is complicated in structure, there is a disadvantage in that the cost is increased, such as a separate space for installing the air discharge valve 40.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a waterway-type drain pump that can improve the performance.

Another object of the present invention to provide a waterway-type drain pump that can reduce the cost.

Water channel type drain pump according to the present invention for achieving the above object, the inlet hole is formed on one surface, the discharge hole is formed on the other surface; A motor installed inside the housing, the motor including a case having an outer surface spaced from the housing; An impeller installed on one side of the inner surface of the housing to rotate by the motor and to flow the liquid introduced into the inflow hole between the housing and the case to be discharged into the discharge hole; The impeller side is installed between the housing and the case, and checks to prevent the liquid flowing between the housing and the case flow back to the inlet hole side while reciprocating from one surface side to the other surface side and the other surface side to one surface side of the housing It includes a valve.

The channel-type drainage pump according to the present invention has a linear reciprocating motion in a form in which a check valve is lifted to prevent the discharged liquid from flowing backward. Therefore, the area of the flow path through which the liquid is discharged is not reduced by the check valve, and the liquid discharged is not interfered with by the check valve, thereby improving performance.

In addition, a check valve is provided in the lower portion of the housing. This makes it possible to form a discharge hole for discharging air in the housing portion under the check valve, so the structure is simple. Therefore, the cost is reduced.

In addition, since the check valve is provided in the lower portion of the housing, liquid is always present in the housing portion above the check valve. Due to this, the amount of liquid discharged to the outside of the housing when the pump is stopped during operation is small, and the amount of liquid that is initially introduced into the housing during the drive when the pump is stopped is small, so that the energy loss is small. And since the liquid which exists in the housing part upper side of a check valve cools a motor, the cooling performance of a motor improves.

In addition, since some of the discharged liquid is discharged to the lower side of the housing through the discharge hole, foreign substances in the lower portion of the housing and the water tank in which the housing is installed are transferred together with the water, thereby preventing the accumulation of foreign substances.

Hereinafter, with reference to the accompanying drawings will be described in detail the channel-type drain pump according to an embodiment of the present invention.

3 is a perspective view of a water channel type drain pump according to an embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view of FIG. 3.

As shown in the drawing, a housing 110 having upper and lower housings 111 and 115, which are positioned at upper and lower sides, respectively, is coupled to each other.

Hereinafter, in referring to the surface and the direction of the other components including the housing 110, the surface and direction toward the longitudinal direction of the housing 110, the "upper and upper side", the longitudinal direction of the housing 110 toward the lower side Surfaces and directions are referred to as "lower side and lower side".

The upper housing 111 has a lower surface open, the lower housing 115 has an upper surface open, and the open portions are coupled to each other. An inlet hole 116 through which an external liquid, such as water, is introduced is formed on a lower surface of the lower housing 115, and an outlet hole 112 is formed on the upper surface of the upper housing 111.

The outer side of the lower housing 115 is coupled to the strainer (Strainer) 120 in the form of surrounding the lower housing 115. The strainer 120 prevents foreign substances more than a predetermined size from flowing into the lower housing 115.

The motor 130 is installed inside the housing 110. The motor 130 has a case 131, a rotating shaft 135, a rotor 137, and a stator 139 forming a sealed space.

The case 131 is installed inside the housing 110, and the outer surface thereof is spaced apart from the inner surface of the housing 110. The upper case 132 and the lower case 133 coupled to each other are located at upper and lower sides. Have The upper case 132 has an open lower surface, the lower case 133 has an upper surface open, and the opened portions are coupled to each other.

The rotating shaft 135 is supported on the upper and lower sides of the case 131 so as to be rotatably installed, and the rotor 137 is fixed to the rotating shaft 135 to rotate the rotating shaft 135. That is, the rotor 137 and the rotating shaft 135 rotates together.

A stator 139 having a core and a coil wound around the core is fixed to an inner surface of the case 131 and rotates the rotor 137 by working with the rotor 137. Then, the rotating shaft 135 is rotated.

The lead wire of the coil of the stator 139 is connected to the terminal box 140 through the housing 110 and the case 131. An external power source is connected to the terminal box 140, and thus external power is supplied to the coil.

A sealing member 145 is provided between a portion of the housing 110 through which the lead wire of the coil passes and a portion of the case 131 to prevent leakage of liquid introduced between the housing 110 and the case 131 to the outside. do.

An impeller 150 coupled to the rotary shaft 135 and rotated by the rotary shaft 135 is installed at an inner lower surface side of the lower housing 115. The impeller 150 discharges the liquid introduced through the inlet hole 116 of the lower housing 115 to the outlet hole 112 of the upper housing 111. At this time, the liquid introduced into the inlet hole 116 passes through the housing 110 and the case 131 and is discharged to the outlet hole 112. The liquid passing through the housing 110 and the case 131 cools the motor 130.

The pump is provided with a check valve to prevent the discharged liquid from flowing back into the interior when the impeller is stopped.

The check valve 160 according to the present embodiment will be described with reference to FIGS. 4 and 6. FIG. 5 is an exploded perspective view of the housing, motor and check valve shown in FIG. 4, and FIG. 6 is a cross-sectional view taken along line “A-A” of FIG. 5.

As shown, the check valve 160 is installed between the housing 110 and the case 131 on the impeller 150 side. That is, the check valve 160 is installed at the lower portion of the housing 110 adjacent to the inlet hole 116, and the housing 110 is linearly reciprocated from the lower surface side of the housing 110 to the lower surface side of the housing 110. And the liquid introduced between the case 131 is prevented from flowing back to the inlet hole 116 side. That is, the check valve 160 moves up and down inside the housing 110.

To this end, the lower case 133 is formed with a partition frame 133a protruding radially outward. The partition frame 133a has an outer circumferential surface sealed to an inner surface of the housing 110 to partition a space of the housing 110. That is, the partition frame 133a partitions the space of the housing 110 in which the motor 130 is installed and the space of the housing 110 in which the impeller 150 is installed.
In addition, a plurality of communication holes 133aa are formed in the partition frame 133a, and the check valve 160 opens and closes the communication hole 133aa while linearly reciprocating the upper side of the partition frame 133a.

The check valve 160 has a plurality of plugs 161 for opening and closing the communication hole 133aa, and a plurality of connecting pieces 165 for connecting the plugs 161 adjacent to each other.

Thus, when the impeller 150 rotates by driving the motor 130, the liquid introduced into the inlet hole 116 raises the check valve 160. Then, since the communication hole 133aa is opened, the liquid is introduced between the housing 110 and the case 131 through the communication hole 133aa and then discharged to the discharge hole 112. Thereafter, when the impeller 150 stops and the inside of the upper and lower housing 110 of the partition frame 133a achieves pressure balance, the check valve 160 descends due to its own weight, thereby closing the communication hole 133aa. Then, the liquid on the upper side of the partition frame 133a is prevented from flowing back to the lower side of the partition frame 133a.

The communication hole 133aa is formed to be inclined in a shape that becomes smaller in size from the discharge hole 112 side toward the inlet hole 116 (see FIG. 6), and the stopper 161 is inclined to correspond to the communication hole 133aa. Formed (see FIG. 6). This allows the stopper 161 to be easily inserted into the communication hole 133aa when the check valve 160 is lowered, and the stopper 161 inserted into the communication hole 133aa is lower than the communication hole 133aa. This is to prevent the liquid from flowing back stably by preventing departure.

The housing 110 and the case 131 according to the present embodiment are provided with various means for supporting the check valve 160 to stably linearly reciprocate.

One of the means is a stopper 113 formed on the inner surface of the upper housing 111 to prevent the check valve 160 from rising to the discharge hole 112 side more than a predetermined. When the check valve 160 rises too high toward the discharge hole 112, the check valve 160 may float between the housing 110 and the case 131, thereby leaving a predetermined position, thereby preventing the check valve 160.

The other one of the means is the first coupling pipe 114 and the connecting piece 165a facing the first coupling pipe 114 formed on the inner surface of the upper housing 111. The coupling member 171 penetrating the lower housing 115 is coupled to the first coupling tube 114, and the connecting piece 165a is formed to have a curvature corresponding to the outer surface of the first coupling tube 114, so that the first coupling tube is connected to the first coupling tube 114. It is supported on the outer surface of 114. Then, the check valve 160 is stably linearly moved on the predetermined path by the first coupling pipe 114 and the connecting piece 165a.

Another one of the means is a space 165c formed between the plug 161 and the connecting piece 165b adjacent to each other with the second coupling pipe 132a formed on the outer surface of the upper case 132. The coupling member 175 penetrating the lower case 133 is coupled to the second coupling tube 132a, and the second coupling tube 132a is disposed in the space 165c between the plug 161 and the connecting piece 165b which are adjacent to each other. ) Is inserted. That is, the check valve 160 is supported on the outer surface of the second coupling pipe 132a. Therefore, the check valve 160 is stably linearly moved on the predetermined path.

The diameter D of the portion of the upper housing 111 between the partition frame 133a and the stopper 113 (see FIG. 4) is the diameter of the portion of the upper housing 111 between the stopper 113 and the discharge hole 112. d) longer than (see FIG. 4). This is to prevent the space between the housing 110 and the case 131 from being narrowed by the check valve 160 when the check valve 160 is raised, as shown by a dotted line in FIG. 4. That is, to prevent the passage of the liquid being narrowed. At this time, the diameter of the upper case 132 located between the partition frame 133a and the discharge hole 112 is uniform.

In the channel-type drainage pump according to the present embodiment, the check valve 160 which prevents the discharged liquid from flowing backward is linearly reciprocated up and down. Therefore, the area of the flow path through which the liquid is discharged is not reduced by the check valve 160, and the discharged liquid does not interfere with the check valve 160, thereby improving performance.

In addition, since the check valve 160 is installed in the lower portion of the housing 110, the liquid is always present in the portion of the housing 110 above the check valve 160. As a result, the amount of liquid discharged to the outside of the housing 110 when the pump is stopped during operation is small, and the amount of liquid that is initially introduced into the housing 110 when the pump is driven at the stop is small, thereby reducing energy loss. In addition, since the liquid present in the housing 110 portion above the check valve 160 cools the motor 130, the cooling performance of the motor 130 is improved.

In the lower housing 115 portion below the compartment frame 133a, the air introduced into the lower housing 115 below the compartment frame 133a is discharged to the strainer 120 and at the same time, the compartment frame is formed by the impeller 150. A plurality of discharge holes 117 are formed to inject the liquid flowing into the 133a side to the strainer 120 side.

As shown by the thick solid line arrow in FIG. 4, the liquid discharged to the discharge hole 117 forms a turbulent flow to remove foreign substances remaining on the lower surface of the lower housing 115 and the corner portion of the strainer 120. At this time, the discharge hole 117 is preferably formed on the edge portion side of the lower housing 115.

In the pump according to the present exemplary embodiment, since the check valve 160 is installed at the lower portion of the housing 110, a discharge hole 117 for discharging air may be formed at the lower portion of the housing 110. Therefore, the structure is simple and the cost is reduced.

In addition, a portion of the discharged liquid is discharged to the lower side of the housing 110 through the discharge hole 117 and the foreign substances in the lower portion of the housing 110 and the water tank (not shown) in which the housing 110 is installed together with water. By transporting, foreign matters are prevented from accumulating.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Of course.

1 is a cross-sectional view of a conventional channel-type drain pump.

FIG. 2A is an enlarged cross-sectional view of the check valve shown in FIG. 1. FIG.

Figure 2b is an enlarged perspective view of the air discharge valve shown in FIG.

Figure 3 is a perspective view of the waterway type drain pump according to an embodiment of the present invention.

4 is a longitudinal cross-sectional view of FIG.

5 is an exploded perspective view of the housing, the motor and the check valve shown in FIG.

FIG. 6 is a cross-sectional view taken along the line “A-A” of FIG. 5.

Explanation of symbols on the main parts of the drawings

110 housing 111 upper housing

115: lower housing 117: discharge hole

131: case 132: upper case

133: lower case 133a: compartment frame

133aa: communication hole 160: check valve

Claims (11)

A housing having an inlet hole formed on one surface thereof and an outlet hole formed on the other surface thereof; A motor including a case installed inside the other surface side of the housing and having an outer surface spaced from the housing; In the water channel-type drain pump is installed inside one surface side of the housing and has an impeller to rotate by the motor and the liquid introduced into the inlet hole flows between the housing and the case to discharge to the discharge hole, The case is provided with a partition frame protruding outward to seal the inner surface of the housing and partitions the space of the housing in which the motor is installed and the space of the housing in which the impeller is installed. The compartment frame is formed with a plurality of communication holes for communicating the inlet hole side and the discharge hole side, A check is performed between the housing and the case to open and close the communication hole while reciprocating from one surface side to the other surface side and the other surface side to one surface side to prevent backflow of liquid introduced between the housing and the case to the inlet hole side. Water channel type drain pump, characterized in that the valve is installed. The method of claim 1, The housing is coupled to the lower housing and the lower housing in which the inlet is formed and has an upper housing in which the discharge hole is formed, The case is coupled to the lower case and the lower case located inside the lower housing and has an upper case located inside the upper housing, And said check valve opens and closes said communication hole at said discharge hole side. The method of claim 2, And a stopper formed on an inner surface of the housing to prevent the check valve from moving more than a predetermined amount toward the discharge hole. The method of claim 3, wherein And the diameter of the housing portion located between the partition frame and the stopper is longer than the diameter of the housing portion located between the stopper and the discharge hole. The method of claim 4, wherein A water channel-type drainage pump, characterized in that the diameter of the upper case located between the partition frame and the discharge hole is uniform. The method of claim 2, The check valve has a plurality of plugs for opening and closing the communication hole, a waterway type drain pump, characterized in that it has a connecting piece for connecting the plugs adjacent to each other. The method of claim 6, The communication hole is formed to be inclined in the form of gradually decreasing in size from the discharge hole side toward the inlet hole side, the stopper is a waterway type drain pump, characterized in that formed in correspondence with the communication hole. The method of claim 6, The inner surface of the upper housing is formed with a first coupling pipe to which the fastening member penetrating the lower housing is coupled, The connecting piece facing the first coupling pipe is formed to have a curvature corresponding to the outer surface of the first coupling pipe and is supported on the outer surface of the first coupling pipe, The first coupling pipe and the connecting piece support a water channel type drain pump, characterized in that for supporting a linear movement of the check valve. The method of claim 6, On the outer surface of the upper case is formed a second coupling pipe to which the fastening member penetrating the lower case is coupled, And a second coupling pipe is inserted into a space formed by the plug and the connecting piece adjacent to each other to support the linear movement of the check valve. The method of claim 2, It is installed in a form surrounding the lower housing is provided with a strainer (Strainer) to prevent foreign matter from entering the interior of the housing, The lower housing portion below the compartment frame discharges air introduced into the housing below the compartment frame to the strainer side and discharges the liquid introduced into the compartment frame side by the impeller to the strainer side. A channel-type drainage pump, characterized in that the ball is formed. 11. The method of claim 10, And the discharge hole is formed in the edge portion of the lower housing.

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