CN112656338A - Dish washer with suction type liquid detergent adding device - Google Patents
Dish washer with suction type liquid detergent adding device Download PDFInfo
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- CN112656338A CN112656338A CN201910978813.0A CN201910978813A CN112656338A CN 112656338 A CN112656338 A CN 112656338A CN 201910978813 A CN201910978813 A CN 201910978813A CN 112656338 A CN112656338 A CN 112656338A
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- monitoring sensor
- reservoir
- pressure monitoring
- dishwasher
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Abstract
The invention discloses a dish washer with a suction type liquid detergent adding device, wherein liquid detergent is temporarily stored in a liquid storage device and is supplied to the dish washer through the detergent adding device; the detergent adding device comprises a metering pump and a liquid level pressure monitoring sensor; the liquid receiver is detachably arranged on the dish washing machine in a hot plugging way; the inlet of the metering pump is communicated with the bottom of the liquid storage device through a connecting pipeline and a coupling point of the liquid storage device, and liquid detergent is sucked out of the liquid storage device; a liquid level pressure monitoring sensor is arranged on the connecting pipeline to acquire the pressure condition in the connecting pipeline; the liquid level pressure monitoring sensor is connected with the control device and transmits the acquired pressure condition in the connecting pipeline to the control device in the form of an electric signal; the control device controls the operation of the metering pump according to the pressure condition in the connecting pipe, and displays the amount of the liquid detergent in the reservoir through the display device. The invention can not only realize reliable liquid level sensing, but also directly display the current liquid level.
Description
Technical Field
The invention relates to the technical field of dish-washing machine manufacture, in particular to a dish-washing machine with a suction type liquid detergent adding device.
Background
The dish washer is a kitchen washing device widely used, and most of liquid level monitoring devices used by the existing dish washers adopt electronic liquid level monitoring devices such as a float switch and the like.
However, in practice, float switches can only reliably monitor the idle state, and resistance measurements only produce signals with low signal strength. Furthermore, in particular in the idle state, air bubbles present in the system cannot be detected and the measurement results may also be confused. Especially for liquids with higher viscosity.
Therefore, how to simply and effectively monitor the inventory of the detergent in the dishwasher in real time becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a dishwasher with a suction-type liquid detergent dispenser, which is simple in structure and easy to implement, and can not only realize reliable liquid level sensing, but also directly display the current liquid level, so that a user can obtain information about the current liquid level at any time and prepare for the subsequent purchase of liquid.
In order to achieve the above object, the present invention discloses a dishwasher having a suction type liquid detergent dispenser, in which a liquid detergent is temporarily stored in a reservoir and supplied to the dishwasher through the detergent dispenser.
The detergent adding device comprises a metering pump, a liquid level pressure monitoring sensor, a control device and a display device;
the liquid receiver is detachably arranged on the dishwasher in a hot plugging way;
the inlet of the metering pump is communicated with the bottom of the liquid container through a connecting pipeline and a coupling point of the liquid container, and the liquid detergent is sucked out of the liquid container;
the outlet of the metering pump is connected with a supply pipeline for supplying the liquid detergent to the dishwasher;
the liquid level pressure monitoring sensor is arranged on the connecting pipeline and is used for acquiring the pressure condition in the connecting pipeline;
the liquid level pressure monitoring sensor is connected with the control device and transmits the acquired pressure condition in the connecting pipeline to the control device in the form of an electric signal;
the control means controls the operation of the metering pump according to the pressure condition in the connection pipe, and displays the amount of the liquid detergent in the reservoir through the display means.
Preferably, the liquid level pressure monitoring sensor is located at a height lower than the bottom of the reservoir.
Preferably, the level pressure monitoring sensor is connected to the connection pipe by a hose, and an air trap is formed between the liquid level and a pressure tank of the level pressure monitoring sensor.
Preferably, the level pressure monitoring sensor is inserted as a connector into the connection pipe through the input and output ports.
Preferably, the reservoir is an open-topped container.
More preferably, the connection duct connects a suction lance, which protrudes from an opening above the reservoir, communicating with the bottom of the reservoir, by means of the coupling point.
The invention has the beneficial effects that:
the invention has simple structure and easy realization, not only can realize reliable liquid level sensing, but also can directly display the current liquid level, and users can obtain the information about the current liquid storage at any time and prepare for the subsequent liquid purchase.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a pressure monitor directly connected to a connecting pipe according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a structure in which a liquid reservoir is installed in a dishwasher in a hot swap manner and a liquid detergent is sucked by a suction spray gun according to an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1 and 2, in the dishwasher having the suction type liquid detergent dispenser, the liquid detergent 8 is temporarily stored in the reservoir 1 and supplied to the dishwasher through the detergent dispenser.
The detergent adding device comprises a metering pump 2, a liquid level pressure monitoring sensor 5, a control device 6 and a display device 7;
the liquid receiver 1 is detachably arranged on the dish washing machine in a hot plugging way;
the inlet of the metering pump 2 communicates with the bottom of the liquid reservoir 1 via the connecting pipe 3 and the coupling point 10 of the liquid reservoir 1, sucking the liquid detergent 8 out of the liquid reservoir 1;
the outlet of the metering pump 2 is connected with a supply pipeline 4 for supplying liquid detergent 8 to the dishwasher;
a liquid level pressure monitoring sensor 5 is arranged on the connecting pipeline 3, and the liquid level pressure monitoring sensor 5 is used for acquiring the pressure condition in the connecting pipeline 3;
the liquid level pressure monitoring sensor 5 is connected with the control device 6 and transmits the acquired pressure condition in the connecting pipeline 3 to the control device 6 in the form of an electric signal;
the control device 6 controls the operation of the metering pump 2 according to the pressure conditions in the connecting pipe 3 and displays the amount of liquid detergent 8 present in the reservoir 1 by means of the display device 7.
The principle of the invention is that liquid detergent 8 is sucked out of the reservoir 1 by the pump 2 and fed through the supply conduit 4. In the process, liquid detergent 8 flows out of the reservoir 1 through the connecting line 3, a filling level pressure monitoring sensor 5 is arranged on the connecting line 3, and the filling level pressure monitoring sensor 5 can be connected to the reservoir 1 through the connecting line 3 via a coupling point 10.
As shown in fig. 1, the control device 6 can estimate the liquid level in the liquid reservoir 1 by the pressure condition in the connecting pipe 3 collected by the liquid level pressure monitoring sensor 5 and display the current liquid level by the display device 7.
In certain embodiments, the level pressure monitoring sensor 5 is located at a height below the bottom of the reservoir 1.
In certain embodiments, the level pressure monitoring sensor 5 is connected to the connecting pipe 3 by a hose, and an air trap is formed between the liquid level and the pressure tank of the level pressure monitoring sensor 5.
The air present in the air trap is compressed by the rising liquid and converts it into a pressure signal which can be tapped on a diaphragm in the pressure tank of the filling level pressure monitoring sensor 5 and then output by the filling level pressure monitoring sensor 5 in the form of an electrical signal.
In certain embodiments, the level pressure monitoring sensor 5 is inserted as a connector into the connecting conduit 3 through the input and output ports.
The filling level pressure monitoring sensor 5 is inserted as a connection piece into the connecting line 3 via the inlet and outlet ports, so that it is flowed through by the liquid during operation of the pump. The direct connection of the pressure monitor has the advantage that no ventilation is required and measurement errors caused by the intake air are largely avoided.
In some embodiments, the reservoir 1 is an open-topped container.
As shown in fig. 3, in some embodiments, the connecting conduit 3 is connected to a suction lance 9 via a coupling point 10, the suction lance 9 extending from an upper opening of the reservoir 1 in communication with the bottom of the reservoir 1.
In the suction state it is irrelevant whether the liquid reservoir 1 is connected to the suction side of the pump, whether it is bottom, top or through the suction lance 9.
When the pump 2 is put into operation, a negative pressure is generated in the connecting line 3 between the reservoir 1 and the pump 2, which negative pressure is also measured by the pressure monitor 5.
After the liquid delivery, the pressure is the gravitational pressure caused by the liquid level in the reservoir. This negative pressure generated during the delivery process can detect whether the pump is working properly or whether there are any defects. If there is air in the connecting duct 3, strong fluctuations in the negative pressure occur, which can be evaluated as a clear difference signal of the state of the air load in the reservoir 1 or as the presence of air bubbles.
The magnitude of the negative pressure and the occurring pressure fluctuations can also be further evaluated as a measure of the viscosity of the liquid medium.
Of course, in selecting and training a pressure monitor, some specificity may need to be considered due to the specificity of the application. The measuring range and measuring sensitivity must be designed for the liquid level in the reservoir and the desired pump pressure. Furthermore, precautions must be taken to ensure that no air bubbles remain in the supply line of the pressure monitor during refilling.
Finally, but equally important, the material properties of the sensor system must be matched to the liquid or dish detergent used. For the necessary elastic components, silicon has proven itself to be a material that comes into contact with commercial liquid detergents or dishwashing detergents.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The dishwasher of the suction type liquid detergent adding device is characterized in that the liquid detergent (8) is temporarily stored in the liquid storage device (1) and is supplied to the dishwasher through the detergent adding device; the method is characterized in that:
the detergent adding device comprises a metering pump (2), a liquid level pressure monitoring sensor (5), a control device (6) and a display device (7);
the liquid receiver (1) is detachably arranged on the dishwasher in a hot-plug mode;
the inlet of the metering pump (2) is communicated with the bottom of the liquid reservoir (1) through a connecting pipeline (3) and a coupling point (10) of the liquid reservoir (1) to suck the liquid detergent (8) out of the liquid reservoir (1);
the outlet of the metering pump (2) is connected with a supply pipeline (4) for supplying the liquid detergent (8) to the dishwasher;
the liquid level pressure monitoring sensor (5) is arranged on the connecting pipeline (3), and the liquid level pressure monitoring sensor (5) is used for collecting the pressure condition in the connecting pipeline (3);
the liquid level pressure monitoring sensor (5) is connected with the control device (6) and transmits the acquired pressure condition in the connecting pipeline (3) to the control device (6) in the form of an electric signal;
the control device (6) controls the operation of the metering pump (2) according to the pressure conditions in the connecting pipe (3) and displays the amount of the liquid detergent (8) in the liquid reservoir (1) by means of the display device (7).
2. A dishwasher with a draw-off liquid detergent dosing device according to claim 1, characterized in that the level pressure monitoring sensor (5) is located at a level below the bottom of the reservoir (1).
3. Dishwasher with a draw-off liquid detergent dosing device according to claim 1, characterized in that the level pressure monitoring sensor (5) is connected to the connecting pipe (3) by a hose and that an air trap is formed between the liquid level and the pressure tank of the level pressure monitoring sensor (5).
4. Dishwasher with a draw-off liquid detergent dosing device according to claim 1, characterized in that the filling level pressure monitoring sensor (5) is inserted as a connection piece through the input and output ports into the connecting duct (3).
5. A dishwasher with a suction-type liquid detergent dosing device according to claim 1, characterized in that the reservoir (1) is an open-topped container.
6. Dishwasher with a suction-type liquid detergent dosing device according to claim 5, characterized in that the connecting duct (3) is connected to a suction lance (9) via the coupling point (10), the suction lance (9) projecting from an upper opening of the reservoir (1) communicating with the bottom of the reservoir (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978813.0A CN112656338A (en) | 2019-10-15 | 2019-10-15 | Dish washer with suction type liquid detergent adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978813.0A CN112656338A (en) | 2019-10-15 | 2019-10-15 | Dish washer with suction type liquid detergent adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112656338A true CN112656338A (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910978813.0A Pending CN112656338A (en) | 2019-10-15 | 2019-10-15 | Dish washer with suction type liquid detergent adding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112656338A (en) |
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2019
- 2019-10-15 CN CN201910978813.0A patent/CN112656338A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210416 |
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| WD01 | Invention patent application deemed withdrawn after publication |