Patent Description:
The present disclosure relates to the field of pump technologies, and more particularly, to a control box for a pump.

A pump is a machine that conveys fluid or pressurizes the fluid. Generally, a drive motor is provided in the pump. The drive motor is provided with a control box configured to control operation of the drive motor. Generally, the control box of the drive motor may be installed on a periphery of a radial side of the drive motor, or may be installed on an axial end part of the drive motor.

Further, the control box also needs to be provided with an outgoing line adapter interface configured to connect a signal line or a power line. However, in general, a working environment of the pump is relatively narrow. In the above two installation modes, if the interface connects the signal line or the power line, too much space needs to be taken up, making the control box unable to adapt to places where installation environments are limited. <CIT>shows a pump driven by an electric motor whose speed can be regulated, with a motor housing accommodating a stator winding and with a pump housing forming an impeller chamber and adjoining the motor housing at the end face, wherein the components required for electronic regulation are accommodated in an electronics housing. <CIT> discloses a pump assembly driven by a motor and a pump shell. The pump shell is provided with a stator shell, which is internally provided with a motor for driving an impeller disposed in the pump shell. The stator shell is provided with a terminal box, which accommodates electric connectors of the motor and electronic or electric elements for control over and/or adjustment to the motor. <CIT> an electric fluid pump comprising a connection terminal wire segment of a winding wire which is positioned on a radial inner side of a guide groove of a crossover guide, and the guide groove of the crossover guide is shaped to extend circumferentially in such a direction that a radial distance is decreased gradually and thereby to set the takeout terminal wire segment of one phase on the radial inner side of crossover wire segments of the other phases. <CIT> discloses a heat circulation pump, which includes a pump housing with a pump impeller arranged therein which is driven by an electric motor arranged in a motor housing which axially connects to the pump housing. The heat circulation pump also includes a terminal box which is axially connected to the motor housing in order to receive electric and/or electronic components of the engine control. <CIT> discloses a motor with a stator shell and a tubular housing. A terminal box consisting of several parts is mounted on the stator shell.

An objective of the present disclosure is to provide a control box for a pump to reasonably utilize space between an axial end part of a housing and a periphery of the end part, such that adaptability of the control box to narrow space is increased.

To achieve the above objective, the present disclosure adopts technical solutions as set forth in claim <NUM>. Further advantageous embodiments are set forth in the dependent claims.

A control box for a pump includes:
a box body and a box cover, wherein the box cover is matched with the box body and is covered on the box body.

Both the box body and the box cover include a first region and a second region, wherein the first region of the box body is corresponding to the first region of the box cover, and the second region of the box body is corresponding to the second region of the box cover. The first regions are arranged on an end part, axially away from a pump body, of a housing of the pump, and the first regions are matched with the end part. The second regions are formed in a way that the second regions extend outwards in a radial direction of the housing, and an empty space is formed between the second regions and the pump body. The first region of the box body is detachably mounted on the end part.

Further, the second region of the box body is provided with an aperture.

Further, a receiving cavity is formed between the box cover and the box body, and a control module is arranged in the receiving cavity.

An electrical contact point is provided on a side of the control module facing the aperture, and the electrical contact point is arranged in correspondence with the aperture.

Further, an indicating member is provided on a side of the control module facing away from the aperture.

The first region of the box cover is provided with a display panel.

The display panel is provided with a transparent area and is configured to display the indicating member.

Further, the first region of the box body is connected to the end part by a plurality of bolts.

Further, an escape structure corresponding to the bolts is respectively arranged on the box body and the box cover of the control box.

Further, the escape structure is an escape slot.

Further, the second region extends outwards between adjacent escape structures in a radial direction of the housing, and a width of the second region is less than or equal to a distance between two adjacent bolts.

Further, the box body is detachably connected to the box cover.

Further, the box body is connected to the box cover by a screw, and a waterproof member is provided above the screw.

Compared with the existing technologies, the box cover provided by the present disclosure has following advantages.

The following embodiments are intended to describe the present disclosure but are not intended to limit the scope of the present disclosure, which is limited by the attached claims.

<FIG> is a front view of a control box according to an embodiment of the present disclosure; and <FIG> is a schematic diagram of the control box installed on a pump according to an embodiment of the present disclosure. A pump <NUM> is a machine that conveys fluid or pressurizes the fluid. As shown in <FIG>, generally, the pump <NUM> includes a pump body <NUM> and a drive motor (not shown in the figure), and the drive motor (not shown in the figure) may be installed in a housing <NUM>. In addition, the drive motor is provided with a control box <NUM> configured to control operation of the drive motor (not shown in the figure). Further, the control box <NUM> may be integrally installed on the housing <NUM>. Generally, the control box <NUM> also needs to be provided with an outgoing line adapter interface configured to connect a signal line or a power line extracted from a client. The client is configured to transmit a control signal or supply power to the control box <NUM> to control operation of the drive motor (not shown in the figure). The control box <NUM> provided by this embodiment may be suitable for optimizing space occupancy of the control box <NUM>.

<FIG> is a side view of the pump provided with the control box according to an embodiment of the present disclosure; and <FIG> is a schematic cross-sectional view of the pump provided with the control box according to an embodiment of the present disclosure.

With reference to <FIG>, the control box <NUM> includes a box body <NUM> and a box cover <NUM>. The box cover <NUM> is matched with the box body <NUM> and is covered on the box body <NUM>.

With reference to <FIG>, both the box body <NUM> and the box cover <NUM> include a first region <NUM> and a second part <NUM>, wherein the first region <NUM> of the box body <NUM> is corresponding to the first region <NUM> of the box cover <NUM>, and the second region <NUM> of the box body <NUM> is corresponding to the second region <NUM> of the box cover <NUM>.

The first region <NUM> and the second region <NUM> are in terms of relative location. Actually, the first region <NUM> and the second region <NUM> may be integrally molded.

Further, the first region <NUM> of the control box <NUM> is integrally arranged on an end part, axially away from the pump body <NUM>, of the housing <NUM> of the pump <NUM>, and the first region <NUM> is matched with the end part. For example, the first region <NUM> of the box body <NUM> is detachably installed on the end part, such that the integral first region <NUM> of the control box <NUM> is detachably installed on the end part.

The integral second region <NUM> of the control box <NUM> is formed in a way that the integral first region of the control box <NUM> extends outwards in a radial direction of the housing <NUM>. With reference to <FIG>, an empty space is formed between the second region <NUM> of the control box <NUM> and the pump body <NUM>, such that the control box <NUM> can make full use of space between the axial end part of the housing <NUM> and a periphery of the end part to reasonably utilize narrow space. In this way, adaptability of the control box <NUM> to a use environment with strict requirements for space is improved.

In an embodiment, with reference to <FIG>, the first region <NUM> of the box body <NUM> is connected to the axial end part of the housing <NUM> by a plurality of bolts <NUM>. Further, an escape structure corresponding to the bolts <NUM> is respectively arranged on the box body <NUM> and the box cover <NUM> of the control box <NUM>. Alternatively, the escape structure is an escape slot.

For example, in a specific embodiment, with reference to <FIG>, a dimension of the end part of the housing <NUM> is a square surrounded by four R160, and the first region 111of the box body <NUM> may be arranged in the square to avoid a nut <NUM> for fixing the housing <NUM> and the pump body <NUM>. Further, the first region <NUM> of the box body <NUM> is connected to the housing <NUM> by a bolt <NUM>, and the first region <NUM> of the box body <NUM> is also provided with an escape structure such as an escape slot to avoid the bolt <NUM>. The second region <NUM> may extend outwards between adjacent escape structures (such as escape slots) in a radial direction of the housing <NUM>. For example, the second region <NUM> is formed by extending in the radial direction (similarly vertical to an axial line <NUM> as shown in <FIG>) of the housing <NUM>, a width of the second region <NUM> may be less than or equal to a distance between two adjacent bolts <NUM>, and an extension length of the second part <NUM> jointly depends on a diameter D of the end part of the housing <NUM> and a width of an outgoing line adapter module <NUM>.

During use, the control box <NUM> may be installed on the housing <NUM> as an integral unit, such that the control box <NUM> and the pump <NUM> are installed separately as integral modules, and then are assembled together to facilitate scheduling of production.

The technical solution of this embodiment solves the problems of space occupation and installation difficulty caused by narrow working environment of the pump <NUM> and larger size of an outgoing line adapter interface. Thus the technical solution has following advantages.

On the basis of the above technical solution, with reference to <FIG>, the outgoing line adapter module <NUM> is detachably installed on the housing <NUM>. An aperture <NUM> may be arranged on a side, facing the pump body <NUM>, of the second region <NUM> of the box body <NUM>. When the first region <NUM> of the box body <NUM> is installed on the end part, the outgoing line adapter module <NUM> may be inserted into the aperture <NUM>. Further, the outgoing line adapter module <NUM> is configured to detachably install a wiring plug <NUM> in the axial direction of the housing <NUM>, such that the wiring plug <NUM> is placed in the empty space <NUM>.

Further, with reference to <FIG>, a receiving cavity is formed between the box cover <NUM> and the box body <NUM>, and a control module <NUM> is arranged in the receiving cavity.

An electrical contact point is provided on a side of the control module <NUM> facing the aperture <NUM>, and the electrical contact point is arranged in correspondence with the aperture <NUM>. When the outgoing line adapter module <NUM> is inserted into the aperture <NUM> and the wiring plug <NUM> is inserted into the outgoing line adapter module <NUM>, the wiring plug <NUM> is electrically connected to the electrical contact point.

The control module <NUM> may be a circuit board provided with the electrical contact point. The electrical contact point may be a conductive elastic piece arranged on the circuit board, and the wiring plug <NUM> may be pointconnected to the elastic piece through an adapter member (not shown in the figure) on the outgoing line adapter module <NUM>. The adapter member (not shown in the figure) may be a power pin or a signal pin.

Alternatively, with reference to <FIG>, an indicating member <NUM> (for example, an indicating lamp) is provided on a side of the control module <NUM> facing away from the aperture <NUM>. The first region <NUM> of the box cover <NUM> is provided with a display panel <NUM>, and the display panel <NUM> is provided with a transparent area and is configured to display the indicating member <NUM>. The transparent area may be formed by providing a hole on the display panel <NUM> and then filling the hole with transparent zdPET or pasting the transparent zdPET on the hole. The zdPET is a milky white or light yellow and highly crystalline polymer with a smooth and shiny surface.

Claim 1:
A control box (<NUM>) for a pump (<NUM>) comprising a pump body (<NUM>) and a housing (<NUM>) of the pump, which are arranged in the axial direction, the control box (<NUM>) comprising:
a box body (<NUM>) and a box cover (<NUM>), the box cover (<NUM>) being matched with the box body (<NUM>) and being covered on the box body (<NUM>); and
both the box body (<NUM>) and the box cover (<NUM>) comprising a first region (<NUM>) and a second region (<NUM>), the first region (<NUM>) of the box body (<NUM>) being corresponding to the first region (<NUM>) of the box cover (<NUM>), and the second region (<NUM>) of the box body (<NUM>) being corresponding to the second region (<NUM>) of the box cover (<NUM>); the first regions (<NUM>) are configured to be arranged on an end part, axially away from the pump body (<NUM>), of the housing (<NUM>) of the pump, and the first regions (<NUM>) being matched with the end part; the second regions (<NUM>) being formed in a way that the second regions (<NUM>) extend outwards in a radial direction of the housing (<NUM>), and an empty space (<NUM>) being formed between the second regions (<NUM>) and the pump body (<NUM>) when the control box (<NUM>) is arranged on the pump (<NUM>); and the first region (<NUM>) of the box body (<NUM>) being configured to be detachably mounted on the end part of the housing (<NUM>), the control box being characterised in that an outgoing line adapter module (<NUM>) which is configured to detachably install a wiring plug (<NUM>) in an axial direction of the housing (<NUM>) is inserted into an aperture (<NUM>) arranged on a side of the second region (<NUM>) of the box body (<NUM>) configured to face the pump body (<NUM>) , such that the wiring plug (<NUM>) is placed in the empty space (<NUM>),
wherein the first region (<NUM>) of the box body (<NUM>) is configured to be connected to the end part of the housing (<NUM>) by a plurality of bolts (<NUM>),
wherein an escape structure corresponding to the bolts (<NUM>) is respectively arranged on the box body (<NUM>) and the box cover (<NUM>) of the control box (<NUM>),
wherein the second region (<NUM>) extends outwards between adjacent escape structures in a radial direction of the housing (<NUM>), and a width of the second region (<NUM>) is less than or equal to a distance between two adjacent bolts (<NUM>).