JP4982445B2 - Pump device - Google Patents

Description

  The present invention relates to a pump device.

  The display of the pressure value and the like of the conventional pump device will be described with reference to FIGS.

  Display of the pressure value during operation of the pump is indispensable for confirming the operation status of the pump. In this pump device, the rotational speed of the pump drive motor 51 is changed to control the pressure during operation of the pump. For example, the control board 52 includes a 7-segment LED 53 which is a display component, and has a structure for displaying a pressure value and the like.

  The control board 52 of the pump device inevitably becomes a vertical type due to restrictions on the main body structure and space. For example, a 7-segment LED 53 which is a display component provided on the control board 52 also becomes a vertical display.

  Further, the control board 52 is provided with a button 54 for changing the setting of operation / stop, operation pressure, etc., in addition to the display component such as the 7-segment LED 53.

  For example, in the example of Patent Document 1, the control board is a speed control device as described above, and the control board is a 7-segment LED as a display component, and a button for changing the setting of the operating pressure and the like. Therefore, the structure has limited visibility and operability.

  As described above, the display of the pressure value during operation of the pump is an indispensable important equipment, and improvement in visibility and button operation has been required.

Japanese Patent No. 4023254

  The display of the pressure value or the like of the conventional pump device is also displayed vertically, for example, a 7-segment LED which is a display component provided on the control board because the control board is vertical. In the case of vertical display, the displayed pressure value etc. is not visible from the back of the control board, the visibility from the oblique direction is poor, and the display is displayed in bad installation conditions such as where the pump device is installed in a narrow place. The direction that can be confirmed was limited.

  In addition to the 7-segment LED, which is a display component, for example, the control board is equipped with buttons for changing operation / stop, operation pressure, etc. The button operability is also bad, such as in narrow spaces, as with the display unit. Operation was difficult under installation conditions.

  The objective of this invention is providing the pump apparatus which solved the said subject and improved visibility, such as a pressure value displayed on a display part.

In order to achieve the above object, a feature of the present invention is that a pump unit that performs pumping by rotating an impeller provided in a casing by a pump driving motor, and a speed of the motor is changed. In the pump device having a control unit that controls the pump unit and a display unit that displays a pressure value or the like output from the control unit, an external fan fan provided at a rear part of the outer shell of the pump driving motor, And a wind guide duct for guiding wind generated by rotation of the outer fan to the control unit, and the display unit is horizontally attached to an upper portion of the wind guide duct.

  According to the present invention, since the display unit is attached to the air duct, the display unit can be placed horizontally, and the visibility of information displayed on the display unit can be improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  First, an outline of a pump device according to an embodiment of the present invention will be described with reference to FIGS. In this embodiment, an example applied to a domestic electric well pump device will be described.

  The pump device includes a base 1 in which a water passage is formed, a pressure tank 2 placed on an upper portion of a discharge side water passage portion of the base 1, a pump drive motor 3 disposed on the base 1, and a pump drive A control board 4 (control unit) that controls the pump device by changing the number of rotations of the motor 3 and a control board 4 connected to the control board 4 via a communication line can switch the display of the discharge pressure value of the pump device and the setting of the operating pressure, etc. A display unit 5; a wind guide duct 8 also serving as a gantry on which the display unit 5 is placed; and a harmonic suppression coil 6 that suppresses harmonics generated when the pump device disposed on the base 1 is controlled; And a pressure sensor 7 for detecting the pressure of the pump device mounted on the upper part of the discharge side water passage portion of the base 1 substantially linearly, and the pump cover 10 covers them.

  The pump unit 15 includes an impeller 16, a casing 17 in which the impeller 16 is placed, and a casing cover 18 that closes the front surface of the casing 17. This pump is called a Wesco pump, and has a suction port 17 (a) and a discharge port 17 (b) in the casing 17. In addition, although description of a present Example illustrates the Wesco pump which is a typical pump, a present Example is not limited to a Wesco pump.

  An air-water separation chamber 19 is provided on the upper part of the pump unit 15. The steam-water separation chamber 19 is connected by a suction pipe 20 so as to communicate with the suction-side water passage 1 (a) of the base 1.

  A suction flange 21 for pipe connection is attached to the end surface on the base 1 side of the suction side water passage 1 (a). A check valve 22 is provided in the air / water separation chamber 19 above the suction pipe 20. This check valve 22 allows the flow of water from the suction port side to the casing 17 side, but operates to block the reverse flow.

  The steam / water separation chamber 19 is connected by a discharge pipe 23 so as to communicate with the discharge-side water passage 1 (b) of the base 1.

  A discharge flange 24 for pipe connection is attached to the end surface on the base 1 side of the discharge side water passage 1 (b).

  A screw-type priming water supply tap 30 is provided in the upper part of the steam / water separation chamber 19. The priming water supply plug 30 is removed to supply priming water.

  The operation of the pump device is performed by operating the pump driving motor 3. First, the self-priming operation is performed, and after the self-priming operation is finished, the pumping operation is started.

  In the self-priming operation, the priming water in the steam / water separation chamber 19 is recirculated from the casing discharge port 17 (b), the air is discharged, and the upstream air gradually flows from the casing suction port 17 (a) of the pump unit 15. Go through and get filled with water. Then, when the water is fully filled, the self-priming operation ends and the operation moves to the pumping operation.

  In the pumping operation, the sucked-up water is sent out from the discharge pipe through the discharge flange 24. In such a pumping operation, when the flow path connected to the discharge pipe is closed, the pressure on the downstream side from the discharge pipe increases. Normally, the pressure sensor 7 detects this pressure and the operation of the pump driving motor 3 is stopped.

  Next, the display part which is the principal part of a present Example is demonstrated.

  First, a display unit structure of a conventional household electric well pump device will be described with reference to FIGS. As a part related to the display unit structure, there is a control board 52 for changing the rotational speed of the pump driving motor 51 in order to control the pressure of the pump driving motor 51 and the pump device. Since the control board 52 is mounted vertically, for example, the 7-segment LED 53 and the button 54 which are display parts provided in the vertical position are also in the vertical position, and the displayed pressure value and the like are confirmed from the back of the control board. There are cases where the direction in which the display can be confirmed is limited under bad installation conditions such as narrow places where it is not visible and visibility from an oblique direction is poor. Also, the button operability is difficult to operate under bad installation conditions such as a narrow space as with the display unit.

  In the present embodiment, in order to solve the above-described problems, the structure for mounting the display unit is improved to a structure that suppresses costs and is excellent in handling.

  Here, the mounting structure of the display unit of this embodiment will be described with reference to FIGS.

  An outer fan 10 and a fan cover 11 are provided at the rear of the outer shell of the pump driving motor 3, and an air guide duct 8 is placed on the upper part. The pump driving motor 3 rotates, and the wind generated by the outer fan fan 10 is discharged from the gap between the fan cover 11 and the outer shell of the pump driving motor 3, but is directed toward the control board 4 that needs to be cooled. Absent. The air guide duct 8 plays a role of changing the direction of the wind toward the control board 4, but also serves as a gantry by adding a structure capable of horizontally attaching the display unit 5 to the upper part.

  Next, a structure in which the air guide duct 8 and the display unit 5 can be attached will be described with reference to FIGS. 4A and 4B are detailed views of the air guide duct 8 according to one embodiment of the present invention. FIG. 4A is a top view of the air guide duct 8, and FIG. 4B is a longitudinal sectional view of the air guide duct 8. is there. 5 is a detailed view of the display unit 5 according to an embodiment of the present invention. FIG. 5A is a side view of the display unit 5 and FIG. 5B is a rear view of the display unit 5. FIG. 6 is a detailed view in which the display unit 5 is attached to the air guide duct 8 according to one embodiment of the present invention, and FIG. 6A is a top view of the state in which the display unit 5 is attached to the air guide duct 8. FIG. 6B is a cross-sectional view of the state in which the display unit 5 is attached to the air guide duct 8.

  The air guide duct 8 can be fitted with a slide structure by providing a plurality of groove portions 25 on the upper surface portion and providing a plurality of convex rail-like ribs 26 on the back surface of the display portion 5 so as to fit the groove portions 25. FIG. 6 shows the fitted state.

  As shown in FIG. 3, the display unit 5 is mounted horizontally by sliding fitting with a plurality of groove portions 25 and a plurality of convex rail-shaped ribs 26 using the air guide duct 8 as a gantry, and is a display component such as a 7-segment display. The LED 13 and the button 14 can be displayed and operated from the upper surface of the home electric well pump device.

  Further, in the fitting by this slide structure, the display part can be removed as necessary, and the structure is excellent in handling even in bad installation conditions such as narrow places.

1 is a longitudinal sectional view of a pump device according to an embodiment of the present invention. It is a rear view of FIG. It is a top view of the state which removed the pump cover of FIG. It is detail drawing of the wind guide duct which concerns on one Example of this invention. It is a detailed view of a display unit according to an embodiment of the present invention. It is detail drawing which attached the display part to the wind guide duct. It is detail drawing of the control board of a prior art example. It is a top view of the state which removed the pump cover of the prior art example.

Explanation of symbols

3 Pump drive motor 4 Control board 5 Display unit
8 Air guide duct 25 Groove part 26 Rib

Claims (3)

A pump unit that performs pumping by rotating an impeller provided in the casing by a pump driving motor, a control unit that controls the pump unit by changing the rotation speed of the motor, and an output from the control unit In a pump device having a display unit for displaying a pressure value or the like
An external fan provided at the rear of the outer shell of the pump drive motor, and an air duct that guides wind generated by the rotation of the external fan to the control unit,
The pump device according to claim 1, wherein the display unit is horizontally attached to an upper portion of the air guide duct. In claim 1,
The display unit and the air guide duct are attached by providing a convex rail-like rib on the back surface of the display unit, and forming a groove on the air guide duct side for fitting the rib on the back surface of the display unit. A pump device characterized. In claim 1 or 2,
The pump device, wherein the display unit attached to the air duct is removable.

Images