DE212009000170U1 - Detecting device for detecting the presence of a liquid - Google Patents

Abstract

A detection device for detecting the presence of a liquid, composed of:
a stabilizer (12) mounted in the tank and from which a rod (121) extends;
a float (13) also mounted in the tank, the float (13) being secured to the stabilizer (12) for actuation and having a first end (131) and a second end (132) opposite the first end (131) ; a weight of the first end (131) is greater than that of the second end (132), a lift of the first end (131) is greater than that of the second end (132), and the float (13) is internally formed with a recess (133) and mounted between the first end (131) and the second end (132); the float (13) is provided with a first lower surface (134) in the first end (131) and with a second surface (135) in the second end (132); the second lower surface (135) in relation to the first lower surface ...

Description

Technical area

The present invention relates to a detection device for detecting a liquid, in particular a device for detecting a presence of the liquid.

State of the art

A detection device for detecting the presence of a liquid according to the prior art is composed of a tank for filling and storing a liquid and a filling opening. Through a nozzle attached to the filling opening, the liquid is filled into the tank with a dispenser. The liquid level in the tank is measured by a pneumatic detection device, i. H. whether the tank is empty or full. Further, an optical detection system is provided which cooperates with the pneumatic detection device to optically measure the liquid level in the tank. However, the optical / pneumatic recognition device is easily affected by the temperature and humidity, and particularly by penetration of the liquid or gas into this recognition device, may cause failure of this recognition device to detect the presence of a liquid.

Object of the invention

The main object of the present invention is therefore to provide an improved detection device for detecting the presence or absence of the liquid.

To achieve this goal, this detection device is constructed of a tank, a stabilizer mounted in this tank, a floating body also mounted in this tank, and a sensor mounted under the tank. From the stabilizer extends a rod. To operate the float is attached to the stabilizer. The float is provided with a first and on the other side with a second end. A volume of the first end is larger than that of the second end. The float has an indentation internally and is disposed between the first and second ends, the float being provided with a first lower surface and in the second end with a second surface. The second lower surface is provided at a predetermined angle with respect to the first lower surface. In the second end of the float is provided with a permanent magnet. The rod protrudes into the recess. The sensor is provided at a location corresponding to the float. When filling the water into the tank, the first end floats so that the rod abuts against a bottom of the recess while the second end is rotated to approach the sensor to cooperate with the permanent magnet to display the water level. When the tank is empty, the first lower surface abuts an underside of the tank so that the second end is removed from the sensor. The sensor does not interact with the permanent magnet to indicate that the tank is empty.

Brief description of the drawings

The drawings show:

1 shows an exploded perspective view of a detection device for detecting the presence of a liquid according to the present utility model;

1A shows an enlarged cross-sectional view of the rod of the stabilizer;

2 shows a perspective view of the floating body of the detection device for detecting the presence of a liquid according to the present utility model;

3 shows a cross-sectional view of the float;

4 shows a partial top view of the detection device for detecting the presence of a liquid according to the present utility model;

5 shows a perspective view of the detection device for detecting the presence of a liquid according to the present utility model;

6 Figure 4 illustrates the installation of the detection device for detecting the presence of a liquid in a coffee maker;

7 illustrates the operation of the detection device for detecting the presence of a liquid when the tank is full, and

8th illustrates the operation of the detection device for detecting the presence of a liquid when the tank is empty.

LIST OF REFERENCE NUMBERS

11

separating platelets

12

stabilizer

13

float

14

sensor

111

installation space

121

pole

131

First end

132

Second end

133

deepening

134

First lower surface

135

Second lower surface

136

Round surface

137

permanent magnet

138

rib

141

Magnetic reed switch

Ways to carry out the invention

With reference to the drawings and at the beginning to the 1 - 5 is a detection device for detecting the presence of a liquid according to the present utility model from a tank, a separating plate 11 in this tank, a stabilizer connected to the tank 12 a float 13 , which for actuation on the stabilizer 12 is attached, and from a bottom mounted on the tank sensor 14 built up.

The separating plate 11 is arranged in a corner of the tank, being between this separating plate 11 and the corner of the tank an installation space 111 is formed, in which the float 13 is included. The installation space 111 is formed in the tank.

The stabilizer 12 is on top of the release plate 11 mounted, being different from this stabilizer 12 a pole 121 extends and into the installation space 111 protrudes. The pole 121 has a portion with a wing-like outline to reduce or reduce the contact area and the friction (see 1A ).

The float 13 is made of plastic, is in the installation space 111 picked up and bumped against the pole 121 of the stabilizer 12 at. Next points the float 13 a first end 131 and a second end 132 opposite the first end 131 on. A volume of the first end 131 is greater than that of the second end 132 , where the first end 131 a higher weight than that of the second end 132 having. When the float 13 immersed in the water is the buoyancy of the first end 131 greater than that of the second end 132 , Next, the float is inside and between the first end 131 and the second end 132 with a depression 133 Mistake. The pole 121 of the stabilizer 12 protrudes into the depression 133 and abuts against a bottom surface of this depression 133 at. The float 13 points in the recess 133 further on a beveled surface, this to the first end 131 Beveled and thereby an open end of the recess 133 larger than the bottom surface of the recess 133 , The float 13 is in the first end 131 with a first lower surface 134 and in the second end 132 with a second lower surface 135 Mistake. The second lower surface 135 points in relation to the first lower surface 134 a predetermined angle, while between this first lower surface 134 and the second lower surface 135 a round surface 136 is formed. This round surface 136 ensures a smooth movement of the float 13 , where the float 13 in his second end 132 with a permanent magnet 137 is provided.

The float 13 has several ribs around its outer periphery 138 on. These multiple ribs 138 make sure to keep a distance between the float 13 and the separating plate 11 or the tank to get a friction between this float 13 and the separating plate 11 or to prevent the tank as possible and thus to a stable movement of the float 13 to guarantee.

The sensor 14 is as a magnetic reed switch 141 executed. This magnetic reed switch 141 is under the tank and in accordance with the float 13 assembled. When the permanent magnet 137 the magnetic reed switch 141 approaching, the sensor sends 14 a signal to indicate that there is water in the tank. Will be the permanent magnet 137 by contrast, the magnetic reed switch 141 removed, the sensor sends 14 A warning will sound to indicate that the tank is empty.

The 6 Fig. 10 illustrates an installation of the detection device for detecting the presence of a liquid in a coffee machine.

The 7 and 8th illustrate the operation of the detection device for detecting the presence of a liquid according to the present invention 7 shown, the float reacts 13 when filling water in the tank on the buoyancy, leaving the first end 131 is brought to swim. At the same time, the pole pushes 121 against the bottom surface of the recess 133 and against the beveled surface, leaving the second end 131 rotated towards the bottom in the tank and closer to the magnetic reed switch 141 is brought, whereupon the sensor 14 sends a signal to indicate that there is water in the tank. If the tank like in the 8th on the other hand, when empty, the first lower surface becomes 134 the first end 131 brought into contact with the bottom of the tank, the second end 132 it is simultaneously removed from the bottom in the tank, after which the sensor 14 emits a warning signal to indicate that the tank is empty.

Claims (5)

A detection device for detecting the presence of a liquid, composed of: a stabilizer ( 12 ), which is mounted in the tank and from which a rod ( 121 ) extends; a floating body ( 13 ), which is also mounted in the tank, the float ( 13 ) for operation on the stabilizer ( 12 ) and a first end ( 131 ) and a second end ( 132 ) opposite the first end ( 131 ) having; a weight of the first end ( 131 ) is greater than that of the second end ( 132 ), a buoyancy of the first end ( 131 ) is greater than that of the second end ( 132 ) and the float ( 13 ) internally with a depression ( 133 ) and between the first end ( 131 ) and the second end ( 132 ) is mounted; the float ( 13 ) with a first lower surface ( 134 ) in the first end ( 131 ) and with a second surface ( 135 ) in the second end ( 132 ) is provided; the second lower surface ( 135 ) in relation to the first lower surface ( 134 ) with a predetermined angle and the float ( 13 ) in the second end ( 132 ) with a permanent magnet ( 137 ), the rod ( 121 ) into the depression ( 133 protruding into it; and a sensor ( 14 ) acting as a reed switch ( 141 ) and which is mounted under the tank and at a float ( 13 ) is mounted corresponding location; characterized in that when filling the tank with water the first end ( 131 ) floats, so that the rod ( 121 ) against a bottom of the recess ( 133 ) abuts; the second end ( 132 ) is rotated to make it closer to the sensor ( 14 ) to allow it to indicate the presence of the water with the permanent magnet ( 137 ) cooperates; characterized in that the first lower surface ( 134 ) against an underside of the tank when the tank is empty so that the second end ( 132 ) from the sensor ( 14 ) Will get removed; the sensor ( 14 ) to indicate that the tank is empty with the permanent magnet ( 37 ) does not interact. The detection device for detecting the presence of a liquid according to claim 1, further comprising a separating plate ( 11 ) is constructed in the tank, wherein between this separating plate ( 11 ) and the tank an installation space ( 111 ) is formed to the float ( 13 ) while the stabilizer ( 12 ) on top of the separating plate ( 11 ) is attached. The detection device for detecting the presence of a liquid according to claim 1, characterized in that the floating body ( 13 ) on its outer periphery with several ribs ( 138 ) is provided. The detection device for detecting the presence of a liquid according to claim 1, characterized in that the floating body ( 13 ) in the depression ( 133 ) is formed with a chamfered surface facing the first end ( 131 ) is tapered so that an open end of the recess ( 133 ) is greater than the bottom surface. The detection device for detecting the presence of a liquid according to claim 1, characterized in that the rod ( 121 ) has a portion a wing-like outline.

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