RU2656953C1 - Household appliance with liquid pipeline - Google Patents

Abstract

FIELD: pipelines.

SUBSTANCE: liquid line has plate extending in direction of flow, at leading edge of which fibrous contamination of liquid is deposited in direction of flow. Home appliance includes backwash device for reversing direction of flow in liquid conduit to opposite, with removal of fibrous contaminants from leading edge.

EFFECT: invention relates to household appliance with liquid line for liquid passage.

15 cl, 4 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a household appliance with a liquid pipe.

State of the art

In household appliances for cleaning garments during the washing process, fibrous contaminants often form. Fibrous stains include, but are not limited to, hair and pile. Pile is whole fibers or parts of fibers that are separated from spun fibers of fabrics. Mechanical and thermal effects on garments in household appliances, for example, in washing machines, often lead to leaching of the pile from threads found in garments. The nap in the water can clump and stray, forming lumps of nap. In addition, during the washing process in household appliances, the hair of the wearer of clothing items accumulates, resulting in lumps of hair. Thus, filamentous contaminants may be present in a form similar to filaments, or may include accumulations of filamentous contaminants.

If in a household appliance a liquid that contains fibrous contaminants is pumped repeatedly, then after a certain time this leads to the accumulation of fibrous contaminants in the corners and at the edges of structural elements located in the pressure circulation circuit. If the accumulated fibrous contamination reaches a sufficient amount, it comes to the formation of conglomerates of fibrous contaminants. Such conglomerates impede the circulation of fluid in the pumping system. This leads to a decrease in the flow rate of the pumped liquid and / or to an increase in pressure in the pumping system. If the active surface of a processing unit, for example, a heating unit, is covered with fibrous impurities, this leads to obstruction in processing or to a decrease in the efficiency of the processing unit.

In a water-consuming household appliance, fibrous contaminants are usually trapped in a fluid stream and engage in overhangs that extend into the channel of the fluid stream. Due to further layering of the fibrous contaminants, after a certain time, conglomerates are formed, which exist in the form of long filaments of fibrous contaminants. When the filaments reach a sufficient length, it is possible to twist the filaments of fibrous impurities on the side of the protrusion, which is opposite to the flow, due to the pulsating motion. As a result of the strong connection of such a twisted filament of fibrous contaminants with a protrusion in the liquid, the filaments cannot be removed even when the direction of the fluid flow is reversed. When the filament is firmly connected to the protrusion, further filament is deposited on this filament. This leads over time to large deposits of fibrous contaminants in the fluid stream. The more fibrous contaminants in the fluid stream, the greater the number of filaments of fibrous contaminants is therefore layered from the stream. As a result, this leads to an ever-increasing coating of the inner surfaces of liquid pipelines in household appliances with fiber contamination, which in turn leads to a reduction in the cross-sectional area of liquid pipelines. If the pump pumping the fluid flow is no longer able to overcome the additional hydraulic resistance resulting from the reduction of the cross-sectional area, it comes to a complete disruption of the fluid flow in the piping system. As a result of this, the processing units included below, for example, heating units, operate without liquid and are destroyed.

A common measure to remove fibrous contaminants from fluid streams in household pipe systems is to use a filter or sieve in liquid pipelines. However, a drawback with the use of sieves or filters is that increasing deposition of fibrous contaminants on the surface of the filter or sieve reduces the permeability of the filter or sieve. As a result, it is necessary to periodically clean the filter or sieve or completely replace them. When filtering or filtering due to the possible twisting of fibrous contaminants on the sieve wires, strongly retained layers of fibrous contaminants arise, the removal of which is possible only by mechanical influences.

Disclosure of the invention

The task underlying the invention is to indicate such a household appliance in which deposits of fibrous contaminants formed in the liquid pipeline are removed.

This problem is solved by the objects of the invention with features according to the independent claims. Preferred embodiments of the invention are the subject of description, figures and dependent clauses.

The problem according to an aspect of the invention is solved by such a household appliance with a liquid conduit for conducting liquid, in which the liquid conduit has a plate extending in the direction of flow, on the front edge of which, in the direction of flow, fibrous contaminants from the liquid are deposited, and in which the composition of the household appliance includes a backwash device to change the direction of flow in the liquid pipe to the opposite with the removal of fibrous contaminants from the front about the edge. As a result of this, a technical advantage is achieved that fibrous impurities present in the liquid are deposited on the plate. Layering of fibrous contaminants occurs at the front edge of the plate, in the direction of movement of the fluid flowing in the liquid pipeline. Further fibrous stains may be deposited on the initially attached fibrous stains. Thus, over a longer period, conglomerates of fibrous contaminants are formed. As a result of the layering of fibrous contaminants on the plate, passing in the direction of flow, the number of fibrous contaminants in the fluid flow in the liquid pipe is reduced. The plate consists of synthetic material or metal. Fibrous impurities that have deposited on the front edge of the plate are removed by the backwash device available in the household appliance, which serves to reverse the direction of flow in the liquid pipe. Fibrous impurities attached to the leading edge of the plate can reach a certain size due to the accumulation of a plurality of fibrous impurities. When the flow direction is reversed by the backwash device, fibrous contaminants are removed from the front edge of the plate by fluid flowing in the opposite direction. Thus, by means of a backwash device, the removal of fibrous impurities attached to the leading edge of the plate is achieved.

A household appliance is a device that is used for housekeeping. It can be a large household appliance, for example, a washing machine, a tumble dryer, a dishwasher. However, it can also be a small household device - for example, a water heater, an automatic coffee machine, a food processor or a vacuum cleaner.

In a preferred embodiment of the household appliance, the liquid pipe includes another plate extending in the direction of flow. As a result of this, a technical advantage is achieved that another plate introduces another edge into the fluid stream on which fibrous contaminants are deposited from the fluid stream. As a result, the likelihood that fibrous contaminants that are in the fluid stream is deposited at the leading edges of both plates is increased. As a result, the number of attached fibrous contaminants increases.

In a further preferred embodiment of the household appliance, the plate extending in the direction of flow and the added plate intersect. As a result of this, a technical advantage is achieved, namely, that both plates are stably secured in the fluid stream. As a result, reliable layering of fibrous contaminants on the plates is also ensured at a high liquid flow rate in the liquid pipeline. When stratification of fibrous contaminants, conglomerates of fibrous contaminants can form, which depart from the plates, protruding into the fluid stream. Layering near the intersection point of both intersecting plates gives an advantage. Due to the spatial proximity of the fibrous contaminants attached to the various plates, conglomerates are formed more easily near the intersection point. In these places, a more rapid and thereby more efficient deposition of fibrous contaminants occurs. As a result, the efficiency of layering fibrous contaminants on intersecting plates increases.

In a further preferred embodiment of the household appliance, a plate extending in the direction of flow and an additional plate enclose a 90 ° angle between them. As a result of this, a technical advantage is achieved in that the optimum positioning of the leading edge of the plates in the fluid flow is ensured. Firstly, it increases the likelihood that fibrous contaminants in the fluid flow will be deposited on one of the leading edges of the plates. Secondly, in the case of an angle between the plates of 90 °, identical regions are created through which the liquid rushes evenly. As a result, the formation of fluid vortices at the plates, which increases the hydraulic resistance of the plates, is prevented. In addition, the areas between the plates are large enough so that the conglomerates of fibrous impurities removed from the plates pass without any delay along with the fluid flow through the areas between the plates. This is an advantage, in particular, when conglomerates of fibrous contaminants are removed from the leading edge of the plates by a backwash process, and then after a subsequent repeated change in the direction of flow, they pass with the liquid past the plates in the original direction of flow. It is possible to connect the crossing plates with each other in one piece. At the intersection of the intersecting plates, they can pass relative to each other along the front or on the rear side of the respective plates. It is possible for the crossing plates to pass into each other at the place of their intersection through the hole in one of the plates.

In a further preferred embodiment of the household appliance, the household appliance includes a sensor for detecting a flow direction and / or a fluid flow rate in a liquid conduit. The sensor can detect both the direction of flow and the flow rate of the liquid in the liquid pipe. Alternatively, the sensor may detect either the direction of flow or the flow rate of the liquid in the liquid line. As a result of this, a technical advantage is achieved that accurate data are obtained by means of a sensor for controlling the direction of flow and / or flow rate. Thus, the direction of flow and / or flow rate changes in accordance with the amount of fibrous contaminants deposited on at least one of the plates in order to remove fibrous contaminants from at least one of the plates. Using such a sensor, it is also possible to automatically switch on the backwash phase. The sensor can recognize, for example, a decrease in the flow rate in the liquid pipe due to a large stratification of fibrous contaminants or an increase in the hydraulic resistance resulting from them. As a result of this, it is possible to start, by means of a sensor, the automatic activation of the backwash device, as a result of which the flow direction is reversed and the fibrous impurities are removed from the leading edge of at least one of the plates. After a certain time, the sensor finishes the backwash phase, again changes the direction of flow, and conglomerates of fibrous contaminants along with the liquid pass by at least one of the plates. After this, fibrous impurities at the leading edge of at least one of the plates begin to be deposited again.

In a further preferred embodiment of the household appliance, the household appliance includes a receiver for collecting fiber contaminants. As a result of this, a technical advantage is achieved that fibrous contaminants collected in the receiver removed by the backwash device from at least one of the plates are collected. Since fibrous contaminants, when separated from at least one of the plates, exist in the form of lumps of fibrous contaminants, it is easy to remove them from the pipe connection system through the receiver.

In a further preferred embodiment of the household appliance, the receiver includes a recess for collecting fiber contaminants. As a result of this, a technical advantage is achieved, consisting in the fact that in place of the recess of the receiver, it becomes possible to calm the flow of liquid in this area. For this reason, conglomerates of fibrous contaminants easily settle in the recess. As a result, fibrous contaminants are easily separated from the total volume of the receiver liquid at regular intervals.

In a further preferred embodiment of the household appliance, the receiver recess includes a drain hole for removing fibrous contaminants from the household appliance. As a result of this, a technical advantage is achieved, consisting in the fact that the fibrous impurities accumulated in the recess are removed directly from the pipe system without the need to interrupt the flow of liquid in the liquid pipe. The drain hole is regulated, for example, by a valve, as a result of which it is possible in the cleaning method to remove fibrous impurities from the receiver at those times when this is desired. Fibrous impurities are removed through the drain hole along with a small amount in the liquid.

In a further preferred embodiment of the household appliance, at least one of the plates has a length in the direction of flow of at least 3 cm. At least one of the plates present in the liquid conduit may have a length in the direction of flow of 3 cm to 5 cm. at least one of the plates available in the liquid pipeline can have a length in the direction of flow from 3 cm to 20 cm. As a result, a technical advantage is achieved, which is due to the elongated execution in m nshey least one of the plates in the flow direction even long fiber contamination on the leading edge of at least one of the plates do not align twisting. Twisting occurs only when fibrous impurities attached to the leading edge of at least one of the plates due to their length are wound around the trailing edge of at least one of the plates. Twisting of long fibrous contaminants is prevented by the use of at least one of the plates with a sufficient length. This ensures the removal of fibrous compounds attached to the leading edge of at least one of the plates. In particular, longer hair or elongated fibrous contaminants are attached to the front edge of at least one of the plates and removed from the fluid flow by reversing the direction of flow of the flow through the backwash device.

In a further preferred embodiment of the household appliance, the cross-sectional area of at least one of the plates in a liquid pipe with accumulating fiber contamination is less than 30% of the total cross-sectional area of the liquid pipe. As a result of this, a technical advantage is achieved in that a layering of a large amount of fibrous contaminants from a liquid stream is achieved on at least one of the plates. However, only less than 30% of the total cross-sectional area of the liquid pipe is covered by layers on at least one of the plates. This helps to prevent such an increase in hydraulic resistance for the liquid in the liquid pipe, which would lead to disruption of the fluid flow. It happens, for example, when using conventional filters, since the latter are blocked over time due to the accumulation of contaminants. Thus, clogging of the liquid pipeline by a conglomerate of fibrous contaminants is prevented.

In a further preferred embodiment of the household appliance, the backwash device is a pump. As a result of this, a technical advantage is achieved in that the pump force is sufficient to move the fluid flow in the liquid pipe at a sufficient speed past the leading edge of at least one of the plates. This makes it possible to effectively stratify the fibrous contaminants at the edge, even when a large amount of fibrous contaminants is attached to at least one of the plates. In addition, a sufficiently strong pump allows you to pump liquid in the liquid pipe in the direction against gravity, for example, if you want to pump liquid into the structural element of the household appliance located above.

In a further preferred embodiment of the household appliance, the pump is designed to move fluid in the liquid conduit in both directions of flow. As a result of this, a technical advantage is achieved in that the pump is designed as a reversible pump. By switching the pumping direction, the reversible pump moves the fluid flow at a sufficient speed against the original flow direction. As a result, effective removal of fibrous contaminants attached to at least one of the plates is achieved, since they are effectively disconnected from the plates by a fluid flow.

According to a second aspect of the invention, the problem is solved by a method for removing fibrous contaminants from a liquid in a liquid pipe of a household appliance, wherein the method includes an operation of depositing fibrous contaminants in a liquid at a leading edge of a plate extending in the direction of flow of the stream, and wherein the method includes a removing operation fibrous contaminants from the front edge of the plate by changing the direction of flow in the liquid pipe to the opposite by means of backwashing Twa. As a result of this, a technical advantage is achieved that fibrous impurities present in the liquid are deposited at the leading edge of the plate. Fibrous impurities attached to the leading edge of the plate may form conglomerates of fibrous impurities when layering further fibrous impurities. After that, conglomerates of fibrous contaminants are effectively removed from the front edge of the plate by reversing the direction of flow in the liquid pipe by means of a backwash device. Upon a repeated change in the direction of the fluid flow to the initial flow direction, conglomerates of fibrous contaminants along with the fluid are passed past the plate, not deposited on the plate.

In a further preferred embodiment, the method includes the process of stratifying fibrous impurities on another plate extending in the direction of flow. This achieves the technical advantage that another plate introduces another edge into the fluid stream, on which fibrous contaminants are deposited from the fluid stream. As a result, the likelihood that fibrous contaminants in the fluid flow are deposited on one of the edges of both plates is increased. As a result, effective removal of fibrous contaminants from the fluid stream is achieved.

In a further preferred embodiment of the household appliance, the method includes the operation of collecting fibrous impurities in the receiver. As a result of this, a technical advantage is achieved consisting in the fact that fibrous contaminants removed by the backwash device of the plates are collected in the receiver. Since fibrous contaminants, when removed from at least one of the plates, exist in the form of lumps of fibrous contaminants, it is easy to remove them from the pipe system with a receiver.

Brief Description of the Drawings

Embodiments of the invention are presented in the drawings and are described in more detail below.

Showing:

FIG. 1 is a schematic view of a household appliance;

FIG. 2 is a top view of a liquid pipeline;

FIG. 3 is a longitudinal section of a liquid pipeline; and

FIG. 4 is a diagram of a method for removing filamentary contaminants from a liquid pipeline.

The implementation of the invention

In FIG. 1 shows a schematic view of a washing machine as a household appliance 100 in a general sense. The appliance 100 includes a door 103 for loading laundry into the appliance 100. The appliance 100 includes a receiver 101 that is filled with detergents or other liquid substances.

In FIG. 2 shows a longitudinal view of a liquid pipe 105 in a household appliance 100. The liquid pipe 105 includes plates 109, 115 extending in the direction of flow of the stream. The plates 109, 115 form an angle of 90 °. Filamentous contaminants of the fluid flow passing in the flow direction 107 are deposited on the leading edge 111 of the plates 109, 115. Due to this, filamentous contaminants are effectively removed from the fluid in the liquid conduit 105.

In FIG. 3 shows a top view of FIG. 2 liquid pipelines 105 in the household appliance 100. Plates 109, 115 forming an angle of 90 ° make it possible to stratify filamentary contaminants on the leading edge 111 of the plates 109, 115 in the direction 107 of the fluid flow in the liquid pipelines 105. The backwash device changes the direction of movement 113 the flow of fluid in the fluid pipe 105 to the opposite. By changing the direction 113 of the flow direction to the opposite, fibrous contaminants are removed from the leading edge 111 of the plates 109, 115.

Many of the fibrous contaminants deposited on the leading edge 111, due to the knocking of individual threads into lumps, turn into conglomerates of fibrous contaminants that can be easily removed from the leading edge 111 of the plates 109, 115.

To remove fibrous contaminants from the leading edge 111 of the plates 109, 115, it is preferable that the fibrous contaminants do not twist. By twisting, in the context of the invention, it is understood that fibrous contaminants that are deposited on the leading edge 111 of the plates 109, 115 in the flow direction 107 are wound with a fluid flow around the trailing edge of the plates 109, 115 in the flow direction 107. As a result, fibrous impurities are wrapped around the plates 109, 115 and therefore it is not possible to remove them from the plates 109, 115 by changing the direction 113 of the fluid flow in the liquid conduit 105.

However, the twisting of the fibrous contaminants occurs only if the fibrous contaminants are longer than the obstacle for which they are caught. In the present invention, the obstacle includes plates 109, 115. But if the obstacle extends over a length much longer than the length over which fibrous contaminants typically propagate in the fluid flow, the fibrous contaminants do not twist. This is due to the fact that the fibrous contaminants do not have threadlike parts that protrude beyond the trailing edge of the plates 109, 115 in the direction of flow 107, since the length of the plates 109, 115 is much greater than the length of the fibrous contaminants.

Such an effect is achieved, for example, by installing at least one of the plates 109, 115 in the liquid conduit 105. At least one of the plates 109, 115 has a length in the flow direction 107 of at least 3 cm. A length of 3 is preferred for the pile cm to 10 cm, preferably a length of 3 cm to 5 cm is used. For hair, a length of 3 cm to 30 cm is preferred, and a length of 3 cm to 10 cm is preferably used.

If a fiber-contaminated solution is pumped, for example, washing water, drained after the washing process, through a liquid pipe suitably equipped with at least one of the plates 109, 115, then for a certain period of time on at least one of the plates 109 115 deposits a large amount of accumulated fibrous contaminants. At a certain point, after which a greater accumulation of fibrous contaminants has already been deposited, but which, however, occurs much earlier than a significant decrease in the cross-sectional area of the liquid pipe 105, the direction 113 of the fluid flow in the liquid pipe 105 is reversed by means of a backwash device. As a result, the attached fibrous contaminants are disconnected from the leading edge 111 of at least one of the plates 109, 115 and washed off with liquid. The opposite direction 113 of the flow is created by reversing the direction of supply of the pump or by flowing a column of liquid back from the area above the obstacle. The removed fibrous contaminants are washed off by the flow of liquid into the receiver from which the feed was made, if there is such a receiver. In this case, the fibrous contaminants remain in a compressed state, which they came to when layering on at least one of the plates 109, 115.

If the fibrous contaminants compressed into lumps during the next flow movement in the feed direction are again pumped along with the liquid past at least one of the plates 109, 115, then the lumpy fibrous contaminations no longer catch on at least one of the plates 109, 115. This due to the fact that the conglomerates roll off the leading edge 111 of at least one of the plates 109, 115. Thus, the conglomerates pass by at least one of the plates 109, 115, remaining in the liquid, and therefore no longer represent clarity locking systems for pipes.

If the discharge from the circulation circuit into the receiver occurs in a tangential direction, then compressed fibrous contaminants will preferably accumulate in the center of the resulting circular motion of the liquid. If a suitable recess is located in this region of the bottom of the tank, which makes it possible to calm the flow, then compressed fibrous contaminants settle there. After that, they are separated at certain intervals from the volume of liquid. If the recess is equipped with a separate outlet device, then compressed fibrous contaminants are removed from the liquid by draining the amount of liquid that is negligible compared to the volume of the tank.

A significant advantage of the device and method according to the present invention is the prevention of clogging by fibrous contaminants of structural elements included in the circulation circuit below. Distributed small fibrous contaminants of the liquid accumulate and are separated from the liquid in a concentrated form, compressed into lumps. The liquids treated in this way almost no longer contain fibrous contaminants and, as a result, are provided for subsequent operations with their use in a higher quality form. The method is carried out without any other mechanical structural elements, does not require maintenance and does not need additional energy. The method is also suitable for waste water from drying machines, washing and drying machines, dishwashers and other liquids containing fibrous contaminants.

In FIG. 4 shows a diagram of a method for removing filamentary contaminants from a liquid pipeline, including layering fibrous contaminants as a first step (201), removing fibrous contaminants as a second step (203), and collecting fibrous contaminants as a third step (205).

All the features explained and shown in combination with the individual embodiments of the invention can be provided in the subject invention in various combinations in order to simultaneously realize their preferred effects.

The scope of the present invention is defined by the claims and is not limited to the features explained in the description or shown in the figures.

Designations

100 household appliance

101 receiver

103 door

105 fluid pipe

107 flow direction for layering fibrous contaminants

109 plate

111 leading edge of the plate or plates

113 flow direction to remove fibrous contaminants

115 next plate

201 operation: layering of fibrous contaminants

203 operation: removal of fibrous contaminants

205 operation: collection of fibrous contaminants

Claims (17)

1. A household appliance (100) with a liquid pipe (105) for passing liquid, characterized in that the liquid pipe (105) has a plate (109) extending in a direction (107) of flow, at a leading edge (111) of which in the direction (107) fibrous fluid contaminants are deposited, and the household appliance (100) includes a backwash device to reverse the direction (113) of flow in the fluid conduit (105) to remove fibrous contaminants from the leading edge (111). 2. A household appliance (100) according to claim 1, characterized in that the liquid pipe (105) includes another plate (115) extending in the direction (107) of the flow. 3. A household appliance (100) according to claim 2, characterized in that the plate (109) passing in the direction (107) of the flow movement and the next plate (115) intersect each other. 4. A household appliance (100) according to claim 2 or 3, characterized in that the plate (109) passing in the direction (107) of the flow movement and the next plate (115) form an angle of 90 °. 5. A household appliance (100) according to one of the preceding paragraphs, characterized in that the household appliance (100) includes a sensor for detecting the direction (107, 113) of the flow and / or the velocity of the liquid in the liquid pipe (105). 6. A household appliance (100) according to one of the preceding claims, characterized in that the household appliance (100) includes a receiver for collecting fiber contaminants. 7. A household appliance (100) according to claim 6, characterized in that the receiver includes a recess for collecting fiber contaminants. 8. A household appliance (100) according to claim 7, characterized in that the recess of the receiver includes a drain hole for removing fibrous contaminants from the household appliance (100). 9. A household appliance (100) according to one of the preceding claims, characterized in that at least one of the plates (109, 115) has a length in the direction (107) of the flow movement of at least 3 cm. 10. A household appliance (100) according to one of the preceding claims, characterized in that the cross-sectional area of at least one of the plates (109, 115) in the liquid pipe (105) with attached fiber contaminants is less than 30% of the total cross-sectional area liquid pipe (105). 11. A household appliance (100) according to one of the preceding claims, characterized in that the backwash device is a pump. 12. A household appliance (100) according to claim 11, characterized in that the pump is arranged to move fluid in the liquid pipe (105) in both directions (107, 113) of the flow. 13. A method of removing fibrous contaminants from a liquid in a liquid pipe (105) of a household appliance (100), characterized in that - the method includes an operation (201) for layering fibrous impurities in a liquid at a leading edge (111) of a plate (109) extending in a direction (107) of flow, and - the method includes an operation (203) of removing fibrous contaminants from the leading edge (111) of the plate (109) by changing the direction (113) of the flow in the liquid pipe (105) to the opposite by means of a backwash device. 14. The method according to p. 13, characterized in that the method includes the operation of layering fibrous contaminants of the liquid on another plate (115) passing in the direction (107) of the flow. 15. The method according to p. 13 or 14, characterized in that the method includes the operation (205) of collecting fibrous contaminants in the receiver.

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