DE3118661A1 - Mouth rinsing device - Google Patents

Abstract

In a mouth rinsing device with an especially heatable storage container for water and a pump which can be driven by an electric motor for the purpose of conveying the water from the storage container via a pressure line to an optionally closeable spray tube, and a pressure-relief device for the pump upon closure of the flushing tube, in order to relieve the drive and to prevent disturbance noises upon closure of the spray tube, there is arranged on the delivery side of the pump (11) a flexible activating member (7, 7', 7'') for a limit switch (9), which activating member can be activated by water under pressure and can be modified in shape and/or size as a function of pressure and automatically opens the limit switch (9) for the drive member of the pump when a predetermined pressure is exceeded and automatically closes it when the pressure falls below the predetermined pressure. <IMAGE>

Description

Petz Electro, CH 3185 Schmitten

Irrigator

The invention relates to an oral irrigator with a particular heatable storage tank for water and an electric motor-driven pump for transport of the water from the storage tank via a pressure line to an optionally closable spray tube and a Pressure relief device for the pump when the spray tube is closed.

Hoi. known oral irrigators with water stop it is known the pressure side of the pump via a relief line the; Create the suction line of the pump or the storage tank, whereby when closing the pressure side, e.g. closing a valve on the spray lance, the pressurized water can flow off via the relief line. With these mouthwashes has proven to be a disadvantage that the simultaneous maintenance of the pump drive in addition to considerable mechanical Loads on the pump and drive and annoying running noises remain.

BATH ORIGINAL

311866

It is the object of the invention to relieve the pump and its drive when the water stops and at the same time acoustically Eliminate influence on the user.

According to the invention this object is achieved in that on the pressure side of the pump, a flexible actuator for a limit switch that can be actuated by pressurized water is present, the pressure-dependent shape and / or size is variable and when a predetermined one is exceeded Pressure a limit switch for the drive element of the pump opens automatically or when it is undershot closes automatically. This ensures that the pumping of water by stopping the water stop ends of the pump and pump drive. At the same time the pump and the pump drive are mechanically relieved and the The generation of interference noises as a result of excessive or overloading of the same is prevented.

In an expedient embodiment of the oral irrigator, the actuating element be formed by a folding cuff. Due to predetermined pressure changes, a length or change in the shape of the cuff which causes the release switch to be actuated. As an actuator can also be a flexible pipe section or a pressure-tight clamped membrane are used.

The invention is illustrated in the drawing using exemplary embodiments. Herein mean:

ORIGINAL BATHROOM

Ι Figure 1 shows a section of an oral irrigator schematically, partly in section, in working position,

FIG. 2 shows a section of an oral irrigator according to FIG _. 1: in the rest position,

FIG. 3 shows a section of an oral irrigator, schomatiseh according to another version and

FIG. 4 shows a section of an oral irrigator of a further embodiment.

In the figures, at 1 is schematically a pump, e.g. Piston pump shown, which is driven by an electric motor, e.g. an electric motor or electromagnet is driven. The pump 1 is via a suction line 2 with a storage container not shown in more detail in permanent connection. With 3 is a pressure line which has a spray tube 4 with a valve 5 at the end remote from the pump 1. At the Pressure line 3 is followed by a pipe section 6 and a folding sleeve 7 serving as an actuating element, which the Actuator 8 of a limit switch 9 is assigned. The limit switch 9 is located on electrical conductors lo, 11 im Drive circuit. When the oral irrigator is in operation, the pump 1 delivers water from the reservoir via the Suction line 2, the pressure line 3 to the spray tube 4. The • valve 5 is in the open position (Fig. 1).

Ras in Figures 1 and 2 designed as a folding cuff Actuator 7 is designed so that it. in rest position remains, i.e. leaves the closed position of the limit switch 9 unaffected.

BATH ORIGINAL

By pressing in the valve S (Fig. 2) takes place
by blocking the pressure line 3, a pressure build-up that
gives rise to an extension of the folding machine 7 and opened the limit switch 9 by striking the actuating member 8. This interrupts the circuit of the drive of the pump 1 and stops the pump. If the valve 5 is opened by releasing it, the folding sleeve 7 is returned to the dip position of FIG. 1 due to a drop in pressure in the pressure line 3 and the drive for the pump 1 is automatically activated by closing the limit switch 9
ι 'ι nqesehcvl dead :.

In Fig. 3, the pressure line takes over part of the piece
Your length a flexible piece of pipe 7 ', which
when pressure builds up in the pressure line 3 in length and
The shape for opening the limit switch 9 is changed (dashed illustration) and automatically assumes the original position when the pressure is reduced to close the limit switch 9 again.

In the oral irrigator of FIG. 4, the actuator is
formed by a membrane 7 ¹¹ which is clamped in a housing 12 and when pressure builds up in the pressure line 3 after the valve closes after the valve is bent due to deflection
Kndschal 1 or 9 opens or in the case of dry knitting after opening dos
Vi-nt ils', don Rndsrhnltor 9 srhlws.

ORIGIMAL BATHROOM

Claims (1)

Company Petz Electro, CH 318 ¹ S referee * ton Claims Oral irrigator with an in particular behoizbaron storage container for water and an electric motor! Srh driven pump for the transport of the water aas the storage container via a pressure line to an optionally closable spray tube and a pressure relief device for the pump when the spray tube is closed, characterized in that .in the pressure side the pump. (1) a flexible actuating element (7, T, 7 ¹ ') which can be activated by pressurized water for a limit switch (9) is present, which changes in shape and / or size depending on the pressure and when a predetermined value is exceeded Press the limit switch (9) for the. Ant ri ebsqliod of the pump "opens automatically or closes automatically when the value falls below the limit. 2 .. oral irrigator, according to claim 1, characterized * that the actuator by a folding sleeve (7) gobi Idet -i st. BAD ORSGlNAL λ. Oral irrigator according to claim 1, characterized in that a "flexible tube (7 ¹ )" serves as the actuating element. 4. Oral irrigator according to claim 1, characterized in that the actuating member is formed by a pressure- ^{tight.eingespannto membrane (7 11} ). ORIGINAL