ES2693196T3 - Submersible pump - Google Patents

Abstract

Submersible pump, which includes a main pump body (1) and a water level switch, where the water level switch essentially comprises at least two sensor units (2) arranged aligned to the main pump body (1) distanced in the vertical direction and all in sufficient contact with water, as well as a control switching unit, which by receiving a water signal transmitted by any sensor unit (2) controls the connection and disconnection (1) of the body main pump; characterized in that the at least two sensor units (2) N comprise resistors of a series connection structure as well as conductive electrodes N + 1, where resistors N and conductive electrodes N + 1 respectively are distributed to a distance and N is> = 2; The control switching element (4) is an integrated chip, which in accordance with the value of the total resistance of the series arms of the resistors N controls the connection and disconnection (1) of the main pump body; the series arms of the resistors N make a signal connection with the integrated chip and form an electric circuit, and to the integrated circuit a multi-phase switch (3) is also electrically connected, which is used, to regulate the resistance value, with which the integrated circuit controls the connection and disconnection of the main pump body (1).

Description

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DESCRIPTION

Submersible pump Technical field

[0001] The present application relates to a water pump, particularly, it relates to a submersible pump.

State of the art

[0002] With the help of such a submersible pump, the liquid can be pumped out of containers, sources, internal spaces of buildings, etc.

In this aspect, the submersible pump comprises a main pump body, where the main pump body can be immersed in the liquid that pumps out and has a suction opening, therefore, the liquid can be sucked from the submersible pump subjected Press and exit through the pressure outlet opening.

In the place of the pressure outlet opening, a compression line can be connected, for example a pressure line.

[0003] On the external side of the main pump body is disposed a sensor unit, this sensor unit is coupled to a control unit arranged in the main pump body, with its help the pump can be activated and deactivated correspondingly to The height of the filling level of the liquid surrounding the pump.

For example, it can be foreseen that the pump is switched on when the liquid surrounding the pump reaches the height of the filling level preset by the position of the sensor unit and the pump is switched off in a delayed manner when the level of the filling level falls. below the level of the sensor unit.

Such a submersible pump is already known from the Chinese patent document published as a utility model under patent number 200780006651.X, which discloses a submersible pump, where the pump casing can be immersed in the liquid that is pumped and presents an opening of suction and a pressure outlet opening, in this case the liquid can be absorbed through the suction opening in the pump housing and under pressure be extracted through the pressure outlet opening, in addition there is a device of electronic control, where the electronic control device is coupled with a sensor unit disposed on an external side of the housing, and used, to connect and disconnect the submersible pump correspondingly to the height of the filling level of the liquid surrounding the bomb; where the sensor unit is built as a constructive unit, which is kept adjustable in height in the pump housing, the sensor unit has a sensor housing, where inside the sensor housing are spaced apart, electrodes that can be Wetting with liquid and a sensor holder is arranged on the outer wall of the pump housing, the sensor unit can be connected to the sensor holder in a sufficiently detachable manner, in this case the sensor holder has profile rails, the sensor unit can be closed in the profile rails, where in addition the sensor unit has at least one blocking element, which is prestressed elastically in a clamping position.

In the structure described above, once the pair of electrodes located in the sensor housing is immersed in the liquid, the pump is switched on and maintains the switching state, until the height of the filling level drops below the pair of electrodes

With this, an automatic control of the water pump is finally implemented.

[0004] In the content indicated above, the use of the sensor unit arranged in the outer wall of the pump casing is obviously feasible.

However, the construction for height regulation is complicated in the sensor unit described above and the stability of use is defective.

[0005] US 2013/243573 A1 discloses a water pump with a water level sensor.

The water level sensor comprises three differently long sensors, the tips of which are arranged at differently high levels.

Therefore, various water levels can be measured inside the water pump.

[0006] WO 2007/112928 A1 also shows a water pump with a water level sensor.

The water level sensor comprises two electrodes arranged at the same height.

As soon as both electrodes are immersed in a liquid with electrical connection, these are connected with electrical connection.

This is detected by a control unit, which consequently starts the water pump.

[0007] US 2011/0085917 A1 also shows a water pump with a water level sensor.

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The water level sensor comprises three capacitive sensors, which are arranged differently high in the water pump.

As soon as the respective sensors are immersed in water, a circuit closes on the water, so that different levels of water can be measured.

[0008] US 2006/0005622 A1 shows a water level sensor for a water pump.

The water level sensor comprises an impermeable housing, where several electrodes are arranged. The electrodes can measure field effects, to determine a water level.

Object of the invention

[0009] Aim of the present application is to provide a submersible pump, which solves the above described insufficiencies of the state of the art, the height adjustment of the sensor unit of the submersible pump is relatively uncomplicated.

[0010] In order to implement the described objective, the submersible pump comprises according to the invention according to claim 1 a main pump body and a water level switch; wherein the water level switch comprises at least essentially two sensor units, which are arranged aligned to the pump main body spaced apart in a vertical direction and which can all be in contact with the water; as well as a control switching unit, which by means of the receiver of a water signal transmitted by an established sensor unit controls the connection and disconnection of the main pump body.

[0011] In the submersible pump provided in the manner described above, the various sensor units in the pump main body in vertical direction assume an aligned arrangement, between each sensor unit there is a set unevenness.

That is why it can, when it is first established at will, that a sensor operates, when the filling level of the water environment increases, in which the submersible pump operates, by means of the established sensor unit, the sensor unit receives a sufficient water signal and, in this way, it controls that the water pump turns on automatically and this maintains the switching state, until the height of the filling level falls below the sensor unit established above indicated.

Simultaneously, the various sensor units go through the submersible pump according to the present application, in which various heights conditioned by the construction can be independently adjusted between them, in order to put the submersible pump into service in the automatic control state to provoke the regulation of water level height only by selecting different height positions of the sensor unit, the overall structure of the sensor unit, as well as the structure of the height regulation are relatively uncomplicated, the stability of use is high.

[0012] It is possible to provide that at least two sensor units described above indicated in the form of water level sensors N in the form of an electrode and N> 2; wherein the control switching element is a driving circle of the water pump, which picks up a water signal and triggers the commissioning of the main pump body; the water level sensors N in the form of an electrode are arranged in the vertical direction, spaced apart independently of one another from the main pump body and are connected together by a multi-phase switch with the signal pump pump circuit.

[0013] For the sensor units described in the above-described described example, relatively well-known water level sensors in the form of an electrode are chosen directly by those skilled in the relevant field art, by means of differently adjustable height positions in the main body of the electrode. pump, the electrode-shaped water level sensors can measure the filling level of the water environment, in which the pump operates and therefore transpose an automatic control of the submersible pump.

Simultaneously, the choice of the specific water level sensor in the form of an electrode is implemented by means of a multi-level switch.

The transformation structure of the preferred total technical concept is not very complicated, the manufacturing costs are comparatively low.

[0014] According to the invention, the at least two sensor units comprise resistors N contained in the series connection structure, as well as N + 1 conductive electrodes, where the resistors N and conductive electrodes N + 1 are respectively divided into one distance and is N> 2; the control switching element is an integrated chip, which controls in accordance with the value of the total resistance of the arms in series of the resistors N, the connection and disconnection of the main pump body; the arms in series of the resistors N with the integrated chip make a signal connection, and form a circuit, and the integrated circuit is also connected electrically a multi-level switch, which is used, to regulate the value of the resistance, with that the integrated circuit controls the connection and disconnection of the main pump body.

[0015] The control switching element described above is an integrated chip, which controls in accordance with the value of the total resistance of the arms in series of the resistors N, the connection and

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disconnection of the main body of the pump; whereby by changing the value of the total resistance to the arm in series of the resistors N the immediate connection and disconnection can be controlled or it can guide a delayed connection and disconnection of the main pump body.

[0016] In the other embodiment described above with preferred technology refer at least two sensor units to resistors contained in the series connection structure N as well as conductive electrodes N + 1, where the resistors N and conductive electrodes N + 1 respectively are divided at a distance, and at the two ends of the resistors a pair of conductive electrodes protrude into the series arms respectively, once each pair of conductive electrodes corresponding to each resistance is immersed in the water environment , in which the submersible pump operates, a short circuit in the resistance corresponding to the electrodes can occur, which produces a change in the value of the total resistance in the total series arm.

Therefore, the embodiment described above, with a specific change of the height of the filling level in the commissioning of the submersible pump in the water environment by a change in the value of the total resistance of the series arms in the submersible pump can give the integrated chip a feedback. The user can pre-regulate by means of the multi-level switch the value of the resistance in terms of the automatic connection and disconnection of the submersible pump provided in the present application, when a change occurs in the height of the filling level of the submersible pump environment. , the control switching unit controls the start of operation of the submersible pump, when the value of the actual resistance of the arms in series reaches or falls below the value of the set resistance, otherwise the pump ends the setting in service.

The total preferred technical concept does not refer to any electronic sensory element, which lowers the manufacturing costs sufficiently.

[0017] With the submersible pump obtained that with the present invention, the structure of the sensor unit in the main pump body is uncomplicated and the stability of high use; Simultaneously there are a number of advantages such as comparatively low manufacturing expenses and good profitability.

Description of the figures included

[0018]

Figure 1 is a construction sketch of a submersible pump provided according to the embodiment 1;

Figure 2 is a main diagram of a submersible pump provided according to the embodiment 1;

Figure 3 is a construction sketch of a submersible pump provided according to the embodiment 2; Figure 4 is a main diagram of a submersible pump provided according to the embodiment 2;

Figure 5 is an electrical diagram of a submersible pump provided according to an embodiment 2;

[0019] In the figures is: pump main body 1, sensor unit 2, multi-phase switch 3, control switching element 4, upper conductive electrode 5, intermediate conductive electrode 6, first general conductive electrode 7, second general conductive electrode 8, electric motor of water pumps 9.

Execution examples

[0020] The figures and combined embodiments are described in detail below.

Execution example 1:

[0021] As shown in FIG. 1 and FIG. 2, the submersible pump comprises, according to the present invention, a main pump body 1, a sensor unit 2 is arranged in the pump housing of the main pump body 1, the sensor unit 2 consists of three water level sensors in the form of electrode A, B, C, the three water level sensors are arranged in the form of an electrode spaced apart in vertical direction arranged in series in succession, and between them exist respectively a set unevenness; the control switching element 4 of the pump main body 1 is a driving circuit of the water pump that simply receives a water signal; the three water level sensors in the form of electrode A, B, C are connected together by a multi-phase switch 3 of four levels with a water pump drive circuit that functions as control switching element 4 of the pump water by signal.

[0022] Throughout operation, the multi-phase switch 3 described above as preselection, determines that any of the three water level sensors in the form of electrode A, B, C operates, for example, determines that the water level sensor in Electrode shape operates, when the filling level of the water environment, in which the submersible pump operates, is increased by the water level sensor described above in the form of electrode A, so that the water level sensor is immersed in the form of electrode A completely in the liquid, and if the circuit of the water pump described above has received from the water level sensor in the form of an electrode as feedback the signal that water is present, the

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This control makes it possible for the electric water pump motor 9 to start up in the main pump body 1 and this operating state be maintained until the height of the filling level falls below the water level sensor described above. in the form of electrode A.

In this case, it is lost in the water level sensor in the form of an electrode, the signal that the water is present, immediately, so that it can control the driving circuit of the water pump, that the electric motor of water pumps 9 of the main pump body 1 stop the service immediately.

Execution example 2:

[0023] As shown in Figures 3-5, the submersible pump comprises, according to the present invention, a main pump body 1, three resistors R2, R6, R7 are arranged in the pump housing of the main pump body 1. they maintain in vertical a connection structure in series, as well as four conductive electrodes, where the four conductive electrodes are respectively the upper conductive electrode 5, the intermediate conductive electrode 6, the first general conductive electrode 7 and the second general conductive electrode 8, in in this case the three resistors R2, R6, R7 described above are distributed with the four conductive electrodes respectively at a distance, rather R2 is between the upper conductive electrode 5 and the intermediate conductive electrode 6, R6 is found between the conductive intermediate electrode 6 and the first common conductive electrode 7 and R7 is found between the first common conductive electrode 7 and the second common electrode 7 common conductive electrode 8, the resistance value of the resistor described above R2 amounts to 100 KQ, the resistance value of R6 is likewise 100 KQ, the resistance value of R7 is, however, 300 KQ; the control switching element 4 of the pump main body 1 described above is formed of a U2 chip of the SMD CPU model RSF211B4, as well as its peripheral series circuit; the series arms of the three resistors R2, R6, R7 described above are coupled via a J2 cable interface of the P 2P model 2MM54 180 with the pin sensor of the U2 chip; there is a multi-phase switch, with which the RESET Pin described above Chip U2 is coupled to the MODE Pin, in the multi-phase switch KEY a position of the 500 KQ switch and a switch position of 400 kQ are indicated.

[0024] Throughout the operation in the multi-phase KEY switch described above, the switch position of 500 KQ (high switch position at water level) or switch position of 400 KQ (switch position at intermediate water level) is chosen. ; when the multi-phase KEY switch chooses the high position of the switch at water level, the water pump is switched on, when the U2 chip measures, that the value of the total resistance of the series arm submerged in the liquid of the three resistors R2 , R6, R7 described above reaches or exceeds 500 KQ (highest water level), the electric motor of water pumps 9 of the main body of pump 1 is put into service, when the Chip U2 measures, that the value of the Total resistance of the series arm submerged in the liquid of the three resistances described above R2, R6, R7 is below 300 KQ (lowest water level), the electric motor of water pumps 9 is disconnected from the main body of the pump 1; similarly applies, when in the multi-phase switch KEY the position of the switch at the intermediate water level is chosen, the water pump is switched on, when the U2 chip measures, that the value of the total resistance of the arm in series submerged in the liquid of the three resistors R2, R6, R7 described above reaches or exceeds 400 KQ (high water level), the electric motor of water pumps 9 of the main pump body 1 is put into service, when the Chip U2 measures, that the value of the total resistance of the series arm submerged in the liquid of the three resistors described above R2, R6, R7 300 KQ is below (lowest water level), the electric motor of the water pumps 9 of the Water Pump.

[0025] The U2 chip of the model described above SMD CPU RSF211B4, as well as its peripheral series circuit represent a chip model that integrates the control technology and that is widely disseminated in the relevant technical field, which can be directly acquired by experts , in the concrete use it is still necessary a corresponding control programming, this element control programming belongs nevertheless to the general knowledge of technical experts of the pertinent field, by computer language these technical experts of the pertinent field can elaborate it directly, and since there is diverse options in the computer language, as well as the programmers follow diverse subjective strategies, there is in no case a single form of control programming.

In summary, it can be said that neither the U2 chip of the SMD CPU RSF211 model according to the present application nor the content of its control programming are the content of the claim of the present application.

Claims (1)

Submersible pump, which includes a pump main body (1) and a water level switch, wherein the water level switch essentially comprises at least two sensor units (2) arranged 5 aligned to the pump main body ( 1) spaced in the vertical direction and all in sufficient contact with the water, as well as a control switching unit, which by the reception of a water signal transmitted by any sensor unit (2) controls the connection and disconnection (1) ) of the main body of the pump; characterized by the fact that The at least two sensor units (2) N comprise resistors of a series connection structure as well as conductive electrodes N + 1, where the resistors N and the conductive electrodes N + 1 respectively are distributed at a distance and N is> two; the control switching element (4) is an integrated chip, which in accordance with the value of the total resistance of the series arms of the resistors N controls the connection and disconnection (1) of the pump main body; the series arms of the resistors N make a signal connection with the integrated chip and form an electric circuit, and to the integrated circuit also a multi-phase switch (3), which is used, is electrically connected to regulate the resistance value , with which the integrated circuit controls the connection and disconnection of the main pump body (1).