JP6218626B2 - Self-operating one-way submersible pump - Google Patents

Description

  The present invention relates to an improvement in an automatic operation type one-way submersible pump that automatically starts and stops according to a water level.

  From the viewpoint of miniaturization of the pump and ease of handling, the drive control circuit corresponding to the control panel is accommodated in the pump body, thereby simplifying the incidental facilities and construction of the automatic operation type pump.

  Conventionally, a pump body is formed from a pump casing, an intermediate casing, a motor, a motor cover (corresponding to the “head cover” of the present invention) and the like, and an automatic operation control circuit for the motor is provided inside the motor cover. The structure which provided the electrode for water level detection outside is well-known (for example, refer patent document 1).

  However, in the configuration in which the control circuit is provided in the motor cover as described above, the control circuit is easily heated by the heat generated by the motor, and the temperature of the drive control circuit rises considerably. Since the semiconductor elements that make up the control circuit generate heat and are easily affected by the heat generated by the motor, electromagnetic contactors or the like are used in place of switching semiconductor elements in the drive control circuit of large-capacity pumps. There is a problem that it must be done.

  Therefore, as a heat dissipation measure for the control circuit, the pump body is formed from the pump casing, motor frame, motor, cooling channel casing, head cover, etc., and the motor drive control circuit is provided inside the head cover, and the cooling channel casing is cooled. A configuration is also known in which the drive control circuit is cooled by flowing a part of the pumped water as water, and a part of the pumped water used as the cooling water flows out from an outlet provided in the head cover (see, for example, Patent Document 2). However, in such a configuration, it is necessary to provide a cooling water passage casing separately, so that the pump itself is enlarged and the structure is complicated, and a part of the pumped water is used as cooling water to flow out of the pump body. As a result, the amount of water discharged from the pump decreases and the pump performance deteriorates.

JP 2000-257484 A JP 11-201097 A

  Up to now, the pump switching current has been limited to about 3.7 KW. However, in recent years, the pump switching current has increased to 5.5 KW or more due to the demand for larger pumps. The component parts are also increasing in size, and the parts that make up the control circuit etc. must be placed in the head cover to facilitate repairs by replacing parts when the pump breaks down. In order to cope with the increase in size, the components constituting the control circuit and the like must use semiconductor elements of a size that can be accommodated in a limited space in the head cover. However, the semiconductor elements themselves generate heat, and the pump switching current In addition to increasing the amount of heat generation in proportion to the size, the components that make up the control circuit etc. must be placed in the head cover that is susceptible to motor heat generation. Components constituting the control circuit and the like, can be arranged in a limited space, and is required to ensure excellent heat dissipation.

  The present invention is an automatic operation type one-way submersible pump with high output, which is easily affected by the heat generated by the motor in the head cover, and which constitutes a control circuit including a semiconductor element as a heating element in a limited space. It is an object of the present invention to provide an automatic operation type single-water submersible pump excellent in heat dissipation and pump performance without increasing the size of the pump main body even if it is arranged.

In the automatic operation type single water submersible pump according to claim 1 of the present invention, the discharge port provided on the upper surface of the head cover by introducing water from the pump casing into the single water passage integrally formed on one side of the motor frame and the head cover. Command processing unit that sends a command signal of an appropriate control status based on a detection signal of a water level detector that detects the water level provided in the pump body in a single-water channel type submersible pump pumped to a target location from And an open / close signal supply control unit that supplies signals to two or more contactless electronic power devices that control opening and closing of power supply to the motor by a command signal from the command processing unit, and a power source that controls power and control When the heat radiation area is increased for the purpose of heat radiation cooling, such as a connecting portion, a transformer for stepping down the power supply voltage to the control voltage, and the contactless electronic power device, etc. In addition, the instruction processing unit or the open / close signal supply control unit that has been subjected to a drip-proof process with a resin mold is inverted on the upper surface of the heat sink that is three-dimensionally molded in a U-shape in the vertical direction to reduce installation space. The other side of the heat sink that is three-dimensionally molded in the U-shape is not resin-molded so as to face the part that has undergone the resin mold suspended in the inverted state. The main feature is that a command processing unit or the open / close signal supply control is arranged, and a control unit in which each component is mounted on a heat sink is built in the head cover of the pump body.

  The automatic operation type single water submersible pump according to claim 2 of the present invention is the automatic operation type single water submersible pump according to claim 1, wherein the contactless electronic power device is formed upright on the heat sink. The heat radiation fins and the auxiliary fins are interposed between the exposed surfaces of the heat radiation fins and the exposed surfaces of the auxiliary fins exposed from the side edges of the heat radiation fins. Characterize

  In the automatic operation type single water submersible pump according to claim 3 of the present invention, in the automatic operation type single water submersible pump according to claim 2, a triac is used for the two or more contactless electronic power devices. The command processing unit and the open / close signal supply control unit are arranged so as to be spaced apart from each triac.

  In the automatic operation type single water submersible pump according to claim 4 of the present invention, in the automatic operation type single water submersible pump according to claim 3, the connection portion does not apply an excessive load to the lead of the triac. It is characterized by comprising a terminal block.

  In the automatic operation type single channel submersible pump according to claim 5 of the present invention, in the automatic operation type single channel submersible pump according to any one of claims 1 to 4, the heat sink increases the heat radiation area from the heat sink. An attachment portion of the inverted L-shaped connection portion is formed in a three-dimensional manner in the upward direction, and the connection portion is configured to be installed on the upper surface of the attachment portion of the connection portion.

  The automatic operation type single water submersible pump according to claim 6 of the present invention is the automatic operation type single water submersible pump according to any one of claims 1 to 4, wherein the command processing unit, the open / close signal supply control, The non-contact type electronic power device and the standing surfaces such as the heat sink and the heat radiating and auxiliary fins to which these components are mounted are configured to be installed close to the single water channel side of the head cover. It is characterized by things.

  According to the automatic operation type one-way submersible pump of the present invention, a part of the heat sink is formed in a U-shape, and either a command processing unit or a switching signal supply control unit in which a resin mold is formed as a drip-proof treatment therefor By placing the U-shaped upper part, for example, when the air sealed in the head cover is cooled when the pump is stopped, the command processing unit or the open / close signal supply control unit malfunctions or damages due to dripping of water droplets condensed on the inner wall of the head cover A heat sink with a large heat radiation area is formed by taking a part of the heat sink in an inverted L shape and forming the connecting portion mounting portion in a lifted state, and arranging the connecting portion in the connecting portion mounting portion. Is installed in a control unit with a small installation space, so that it can be installed with a sufficient cooling effect even in a head cover with a small storage space. In addition, the command processing unit or the open / close signal supply control unit that has been subjected to a drip-proof process with a resin mold is suspended in an inverted state on the upper plate rear surface of a heat sink that is three-dimensionally molded in a U shape, and the inverted state The other command processing unit that is not resin-molded on the upper surface of the lower plate of the heat sink that is three-dimensionally molded in the U-shape so as to face the part that has been resin-molded vertically, or the open / close signal supply In addition to being able to prevent a short circuit accident between the command processing unit and the open / close signal supply control unit due to dripping of dew condensation water generated on the inner wall of the head cover by arranging the control, the resin mold suspended in the inverted state was applied. By providing a wiring connector on the opposite lower surface side of the component, it is possible to prevent a short-circuit accident in wiring connection between the command processing unit and the open / close signal supply control unit due to dust in the head cover It has.

  Furthermore, the triac, which is a heating element, is arranged at a position away from the command processing unit that is the center of control and the switching signal supply control unit, and the influence of the heat generated by the triac is determined by the command processing unit and the switching signal supply control unit. And is interposed between a heat radiating fin standing on the heat sink and an auxiliary fin whose surface is exposed from the side end of the heat radiating fin. The triac that is sandwiched between and the U-shaped standing surface, and the command processing unit and the open / close signal supply control unit that are arranged in two upper and lower stages of the U-shape, have the largest endothermic effect in the head cover. Since the head cover is arranged on the side close to the inner wall portion of the head water channel that can be obtained, it is cooled most efficiently in the head cover. Even if a control unit including a triac, which is a heating element, is placed in the head cover that is susceptible to the heat generated by the motor because the switching current flowing in the triac and the heat generation of the triac increase due to the output being larger than the pump, it is excellent It can be configured to ensure heat dissipation.

  In addition, since a pump single water passage is formed that can guide pump pumping from the pump casing to the pump discharge port, all pumped water that also serves as self-cooling of the pump must be discharged from the pump discharge port. Thus, the motor and the control unit are configured to be efficiently cooled by receiving the heat absorption effect of the pumped water flowing through the discharge water channel without reducing the pump performance by reducing the pump discharge water amount.

As shown in FIGS. 1 to 5, the pump body 1 of the present invention is connected to a strainer 2 and a motor shaft for stabilizing the sitting of the pump and avoiding inhalation of impurities, and a blade that rotates and pumps up water. From the pump 3, the pump casing 4 that houses the impeller 3, the discharge port 5 of the pump casing that discharges water in the pump casing 4, the oil casing 6 that is polymerized on the upper surface of the pump casing 4, and the discharge port 5 of the pump casing Water from an oil casing single water passage 7 through which water flows, a motor 8 that is rotated by power supply and whose winding is formed by star connection, a motor frame 9 that forms the outer shell of the motor 8, and water from the single water passage 7 of the oil casing flows. One frame 10 of the motor frame, the electrode 11 provided on the pump body is the first electrode, and the pump body 1 that is also used as the ground of the pump is the second electrode. By configuring a water level detector that detects the position, a command processing unit 12 that commands and transmits a command signal of an appropriate control status based on the water level detection signal of the water level detector, and a command signal from the command processing unit An open / close signal supply control unit 13 for supplying a signal to the triacs 14... 14 of a contactless electronic power device that controls opening and closing of power supply to the motor 8, a connection unit 15 for connecting a power source for controlling power and control , and a power source The command processing unit 12 is configured such that the transformer 16 or the like for stepping down the voltage to the control voltage increases the heat radiation area for the purpose of heat radiation cooling, and performs a drip-proof treatment with a resin mold as shown in FIG. Alternatively, the open / close signal supply control unit 13 can be suspended upside down on the upper wall surface of the head cover 19, but is preferably U-shaped in the vertical direction as shown in FIGS. 1 and 3. The command processing unit 12 or the open / close signal supply control unit 13 subjected to a drip-proof process with a resin mold is suspended in an inverted state on the back surface of the upper plate 17u of the three-dimensionally molded heat sink 17, and is suspended in the inverted state. The other open / close signal supply control 13 or the command in which the resin mold is not applied to the upper surface 17d of the lower plate of the heat sink three-dimensionally molded in the U shape so as to face the component 12 or 13 subjected to the resin mold The processing unit 12 is arranged, and the control unit 18 in which each of the components 12, 13, 14, 15, 16 is mounted on the heat sink 17 is built in the head cover 19, and the connecting unit is mounted so that the connecting unit 15 can be arranged. Radiation fins 21... 21 for cooling the portion 20 and the triacs 14... 14 formed integrally with the heat sink 17. The triac 14... 14 is sandwiched and interposed between the auxiliary fins 22... 22 for increasing the heat radiation effect of the triac 14... 14, the protector 23 protecting the motor 8, and the motor frame from the single water channel 10. Connected to a motor 8 connected to a single water passage 24 of a head cover through which water flows, a pump discharge port 25 for discharging pumped water to the outside of the pump body 1, a handle 26 for holding the pump body 1 when transporting, and a three-phase AC power source 28. It comprises a power cable 27 for supplying power.

  The discharge port 5 of the pump casing is integrally formed with the pump casing 4, the oil casing one water passage 7 is the oil casing 6, the motor frame one water passage 10 is the motor frame 9, and the head cover one water passage 24 is the head cover 19. Molded.

  Since the pump casing 4, the oil casing 6, the motor frame 9, and the head cover 19 are integrally joined by being fastened with bolts or the like, the discharge port 5 of the pump casing and the one water passage of the oil casing 7, the single water channel 10 of the motor frame, the single water channel 24 of the head cover, and the pump discharge port 25 are electrically connected to each other, and pumping of the pump from the pump casing 4 to the pump discharge port 25 can be guided. Since the pump single water channel is formed, all the pumped water that also serves as the self-cooling of the pump is discharged from the pump discharge port 25, and the motor performance is reduced without decreasing the pump performance by reducing the pump discharge water amount. The control unit 18 and the control unit 18 are configured to be efficiently cooled by receiving the heat absorption effect of the pumped water flowing through the one water channel of the pump.

  In addition, the parts arranged below the part of the heat sink 17 that is three-dimensionally molded in a U-shape are arranged to be lifted from the heat sink 17 by spacers or the like so that they are not directly affected by the heat generated by the motor 8. It is configured.

  The pump output of the present invention is, for example, 5.5 KW, which is larger than the conventional one. Therefore, the switching current of the triacs 14... 14 that are semiconductor elements is increased, and the heat generation of the triacs 14. The triacs 14... 14 are spaced apart from the command processing unit 12 serving as the center of control and the open / close signal supply control unit 13.

  The triacs 14... 14 are radiating fins 21... 21 erected on the heat sink 17, and auxiliary fins 22 whose surfaces are exposed from the side ends of the radiating fins 21. 22 between the exposed surface of the radiation fins 21 ... 21 and the exposed surface of the auxiliary fins 22 ... 22 exposed from the side ends of the radiation fins 21 ... 21. It is configured to dissipate heat efficiently.

  Since the connecting portion 15 is composed of a terminal block, an excessive load is not applied to the leads of the TRIACs 14... 14 when connecting in-flight wiring, so that an accident due to breakage of the TRIACs 14. Can be played.

  In addition, a part of the heat sink 17 is formed in a three-dimensional manner with the attachment portion 20 of the inverted L-shaped connection portion upward, and the connection portion 15 is installed on the attachment portion 20 of the connection portion. The surface area of the heat sink 17 is increased, and the heat dissipation effect by the heat sink 17 is improved.

  In the head cover 19, since the side near the inner wall portion of the head cover single water passage 24 can obtain the largest endothermic effect by the self-cooling action while water is discharged from the head cover single water passage 24, the command processing section 12. The open / close signal supply control unit 13 and the triacs 14... 14 are installed close to the head water channel 24 and are configured to be cooled most efficiently in the head cover 19.

  Moreover, although the example which comprises the connection part 15 of this invention with the best terminal block was demonstrated, the structure which connects wirings, such as a solder connection, a butt terminal, and an insertion terminal, other than a terminal block is possible.

  Next, the operation of the automatic operation type single channel submersible pump of the present invention will be described with reference to FIGS.

  When the three-phase AC power supply 28 is turned ON and the water level reaches the detected water level of the upper electrode 11 which is the operable water level of the pump, the water contacts the electrode 11 corresponding to the first electrode at a lower water level. When the pump body corresponding to the second electrode is turned on and the water level is detected, the command processing unit 12 transmits a command to operate the pump to the open / close signal supply control unit 13, and the open / close signal supply control unit 13 When the command from the unit 12 is received, the triac 14... 14 becomes a conductor by transmitting an open / close control signal to the triac 14. 8 is supplied, and the operation of the pump body is started.

  If the water level drops and falls below the detection water level of the electrode 11 during the operation of the pump body, the water level detection signal is caused by the disconnection between the electrode 11 corresponding to the first electrode and the pump body corresponding to the second electrode. Is opened and the pump is stopped after the pump operation is continued for a predetermined time (for example, one minute) set in advance in the pump timer, but if it rises again to the detected water level of the electrode 11 within the predetermined time, The operation of the pump is continued by returning the first and second electrodes to the conductive state.

It is a vertical side view of the automatic operation type single channel submersible pump concerning the present invention. It is a cross-sectional view in the A thru | or H line of FIG. FIG. 3 is a reference diagram of a cross section in a G direction of FIG. 2. FIG. 10 is a reference diagram illustrating another embodiment in which a command processing unit or an open / close signal supply control unit that has been subjected to a drip-proof process with a resin mold is vertically suspended on an upper wall surface in a head cover. It is an electric circuit diagram of the automatic operation type single channel submersible pump concerning the present invention. It is a flowchart figure which shows operation | movement of the automatic driving | operation type single waterway submersible pump which concerns on this invention.

DESCRIPTION OF SYMBOLS 1 Pump main body 4 Pump casing 8 Motor 9 Motor frame 11 Electrode 12 Command processing part 13 Opening / closing signal supply control part 14 Triac 15 Connection part 16 Transformer 17 Heat sink 17d Heat sink lower plate 17u Heat sink upper board 18 Control unit 19 Head cover 20 Connection part Mounting portion 21 Radiating fin 22 Auxiliary fin 24 Single water channel 25 of head cover Pump discharge port

Claims (6)

In a single water channel type submersible pump, water is introduced from a pump casing into a single water channel integrally formed on one side of the motor frame and the head cover, and pumped from a discharge port provided on the upper surface of the head cover to a target location. Based on the detection signal of the water level detector that detects the water level provided in the system, a command processing unit for command transmission of a command signal of an appropriate control status, and opening / closing of power supply to the motor by the command signal from the command processing unit Open / close signal supply control unit for supplying signals to two or more contactless electronic power devices, a connection unit for connecting a power source for controlling power and control , a transformer for stepping down the power source voltage to the control voltage, the contactless unit In addition to increasing the heat-dissipating area for the purpose of heat-dissipating cooling, electronic power devices of the type are three-dimensionally molded in a U-shape in the vertical direction to reduce installation space. A component in which the command processing unit or the open / close signal supply control unit subjected to drip-proofing with a resin mold is suspended in an inverted state on the upper plate rear surface of the heat sink, and the resin mold is suspended in the inverted state The other command processing unit or the open / close signal supply control unit that is not resin-molded is arranged on the upper surface of the lower plate of the heat sink that is three-dimensionally molded in the U shape so as to face the heat sink, A self-operating one-way submersible pump, characterized in that the control unit installed in is built in the head cover of the pump body.
  The non-contact type electronic power device is sandwiched and interposed between a radiation fin standing on the heat sink and an auxiliary fin, and is exposed from an exposed surface of the radiation fin and a side end of the radiation fin. The automatic operation type one-way submersible pump according to claim 1, wherein heat is radiated more efficiently than the exposed surface of the auxiliary fin.   The triac is used for the two or more contactless electronic power devices, and the command processing unit and the open / close signal supply control unit are arranged to be spaced apart from each triac. The automatic operation type one-way submersible pump according to 1 or 2.   The automatic operation type one-way submersible pump according to claim 3, wherein the connection portion is configured by a terminal block so that an excessive load is not applied to the lead of the triac.   In order to increase the heat dissipation area of the heat sink, the attachment portion of the inverted L-shaped connection portion is formed in three dimensions upward from the heat sink, and the connection portion is configured to be installed on the upper surface of the attachment portion of the connection portion. The automatic operation type single water submersible pump according to any one of claims 1 to 4, wherein   The command processing unit, the open / close signal supply control, the contactless electronic power device, and the heat sinks and the heat sinks and the auxiliary fins on which the respective components are mounted are arranged on one side of the head cover. The automatic operation type one-way submersible pump according to any one of claims 1 to 4, wherein the automatic operation type one-way submersible pump is configured to be installed close to the side.

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