TW201628545A - Suction nozzle for electric vacuum cleaner - Google Patents

Abstract

A suction nozzle (1) for an electric vacuum cleaner is disclosed, which is particularly referred to a handheld rechargeable vacuum cleaner. The suction nozzle (1) has a suction inlet (3) and a discharge outlet (4), in which the suction inlet (3) arranged in contact with a to-be-cleaned floor is utilized to suck air containing a to-be-sucked object, and the discharge outlet (4) is utilized to allow a fluid connection between the suction nozzle (1) and an exhaust fan (5) of the vacuum cleaner (2). In order to provide a user with an operation comfort, the disclosed suction nozzle (1) is provided with a dust collection chamber (6) utilized for receiving the to-be-sucked object from the suction inlet (3) and a connection member utilized for reversely connecting the suction nozzle (1) to a housing section (10) corresponding to the vacuum cleaner. A vacuum cleaner provided with the suction nozzle (1) is further provided.

Description

Nozzle for electric vacuum cleaner

The present invention relates to a suction nozzle for an electric vacuum cleaner, and an electric vacuum cleaner, particularly a hand-held rechargeable vacuum cleaner, wherein the suction nozzle has a suction port and a discharge port, and the suction port can be in contact with the floor to be cleaned. The arrangement is for the purpose of inhaling the air carrying the object to be sucked, and the discharge port is for fluidly connecting the nozzle to the extractor of the vacuum cleaner.

Nozzles of the above type are disclosed in detail in the prior art. It is used for inhaling the objects to be cleaned on the floor to be cleaned, such as dust and/or dirt, with a vacuum cleaner, and transmits it to the dust collecting chamber inside the equipment casing of the vacuum cleaner through the air flow connection. During the suction operation, the suction opening of the nozzle is usually in contact with the floor to be cleaned or the surface to be cleaned, so that the object to be sucked can be sucked into the nozzle. Inside the dust collecting chamber of the vacuum cleaner there is usually a filter bag having a web for fluid connection to the nozzle through the suction tube. When the filter bag is completely filled with the object to be sucked or if it is not filled as needed, the device casing of the vacuum cleaner must be opened, and in the case of separating the connecting plate of the suction pipe and the filter bag, the filter bag is self-collected in the dust collecting chamber Remove and replace with a new filter bag.

The disadvantage is that the suction nozzle of the vacuum cleaner is seriously polluted when sucking in moisture, viscous or particularly fine dust medium, because the air carrying the object to be sucked comes into contact with the material of the nozzle when it is sucked into the dust collecting chamber, thereby sucking The mouth is contaminated by the object to be sucked. In this case, the user needs to work hard to remove the residue on the nozzle, which is generally impossible. Satisfactory.

In view of the above, it is an object of the present invention to provide a nozzle that can be used comfortably by a user.

The solution to achieve the above object of the present invention is to provide a suction nozzle having a dust collection chamber for receiving a suction object sucked into the suction port thereof, and a housing region for the suction nozzle and the vacuum cleaner. A connector that is reversibly connected to the segment.

According to the invention, the nozzle has a dust collecting chamber such that the nozzle and its dust collecting chamber together form the same replaceable part, which can be replaced or disposed of in an overall manner during contamination. Therefore, the suction side casing section portion including the suction nozzle and the dust collecting chamber of the cleaner can be integrally replaced. If the user inhales the air carrying the viscous or extremely small object to be sucked by the nozzle, the user does not need to laboriously clean the contaminated/adherent nozzle, but the nozzle can be simultaneously with the dust collecting chamber. replace. Among them, it is particularly advantageous in that it is not necessary to separate the nozzle and/or the suction pipe from the dust collecting chamber. Since the separation of the two components cannot completely prevent the dust from escaping, this point is usually particularly sensitive to dust. Good.

Furthermore, the suction nozzle has a connection for reversibly connecting the suction nozzle to the corresponding housing section of the vacuum cleaner. In this way, the suction nozzle can be connected to the housing section of its vacuum cleaner in a particularly simple manner and can be removed again from the housing section. For example, the connecting element can have a plug-in connection, so that the nozzle can be inserted into the corresponding section of the vacuum cleaner in the simplest case. As an alternative, the connector of the nozzle can also have a snap-fit, a bayonet-connected component or a thread. Therefore, the nozzle including the dust collecting chamber can be used as a replaceable member (disposable member), which is particularly easily connected to the housing section of the cleaner and is again separated from the housing section. In particular, by integrating the dust collecting chamber into the suction nozzle, it is no longer necessary to open the vacuum cleaner housing and empty the dust collecting chamber. The dust collecting chamber and the filter element are taken out. Specifically, a nozzle including a dust collecting chamber can be disposed from the outside on the housing section of the cleaner, for example, in a plug, a snap or the like.

According to the first embodiment, the dust collecting chamber is integrally formed with the suction nozzle. Due to its integral nature, the nozzle always includes a dust collecting chamber and is disposed as a disposable component. Therefore, the user of the nozzle does not come into contact with the object to be absorbed contained in the dust collecting chamber.

Alternatively, the dust collecting chamber may be arranged on the suction nozzle in a reversible manner according to the second embodiment, and may be separated from the suction nozzle. The user can connect the nozzle to different dust collecting chambers. The dust collecting chamber can be distinguished, for example, in terms of filter element type, size, material or the like. The nozzle and the dust collecting chamber can be connected to each other in different ways. In particular, it is suitable to use a reversible plug-in connection or a snap-fit connection that facilitates user establishment and/or separation. According to the technical solution, the user can also replace the nozzle with only a new nozzle, and connect the dust collecting chamber with the new nozzle and continue to use, because only a small portion of the dust collecting chamber is filled with dust/soil. Things.

The invention proposes that the dust collecting chamber has a filter element for filtering the inhaled air. This filter element can be made of a conventional material (for example, a microfiber web) for a dust filter. What is important is that the filter element can retain the object to be sucked into the suction nozzle within the dust collecting chamber, so that only the cleaned air enters the exhaust fan of the connected vacuum cleaner.

The invention proposes that the filter element is a filter bag which is arranged inside the dust collecting chamber such that the filter bag opening of the filter bag faces the suction opening. According to the technical solution, the filter bag forms a separate filter bag space inside the dust collecting chamber, and the filter bag space advantageously has a filtering effect in the vicinity of its entire surface, thereby achieving particularly large filtering efficiency. Wherein the filter bag is beneficially impervious to dust and/or impervious in the area of the opening of the filter bag. The method is connected with the dust collecting chamber, so that the sucked object to be sucked can only enter the filter bag without entering the gap formed between the filter bag and the dust collecting chamber.

Alternatively, the filter element may be a filter mat that is arranged in front of the discharge opening along the air flow direction in the dust collecting chamber. According to the present technical solution, the filter element does not have the form of a complete filter bag. Exactly, only the filter element is arranged in front of the exhaust fan side discharge opening of the dust collecting chamber, which advantageously consists of a flat material and carries dust/dirt on the way from the discharge opening to the suction fan of the vacuum cleaner. The air is filtered. This embodiment is implemented with as little filter material as possible, since it is not necessary to provide a filter bag that covers the interior of the dust collecting chamber, but only a strip of material covering at least its discharge opening. The system to be sucked is collected directly in the dust collecting chamber and can be emptied, for example, when the dust collecting chamber is separated from the suction nozzle (in the case of a two-part scheme), or replaced with the suction nozzle as a disposable component. .

The invention proposes that the nozzle is at least partially made of cardboard and/or wood and/or bamboo and/or corn and/or sorghum and/or alga. In particular, the invention proposes that the dust collection chamber is made of one or more of the materials. Thereby, the nozzle is advantageously made entirely or at least mostly from a low cost and recyclable material. In principle, plastics (eg polystyrene) can also be used to form the nozzle. A combination of the materials may also be used. For example, the dust collecting chamber is composed of a recyclable material (for example, cardboard), and other sections of the nozzle, in particular, a section having a suction port, It is made of plastic or at least coated with plastic to improve the shape stability and/or moisture resistance of the nozzle. This solution is beneficial when the substance to be inhaled is, for example, in a wet state.

According to the invention, the dust collecting chamber has a check valve on the section close to the suction opening for reversibly closing the dust collecting chamber opposite to the suction opening. Check valve For example, a rubber sheet that is bonded to the dust collecting chamber or, for example, to the extrusion joint. Of course, other types of check valves may be used, such as a spring valve that opens when a suction airflow is formed inside the dust collection chamber. The check valve is used to prevent the object to be sucked from escaping from the dust collecting chamber or the suction nozzle when the suction fan of the vacuum cleaner is closed.

In addition to the aforementioned nozzles, the invention also proposes a vacuum cleaner, in particular a hand-held rechargeable vacuum cleaner, having a nozzle of the invention. In particular, the housing section on the outer side of the cleaner is formed by the nozzle. It is usually the portion of the housing section of the vacuum cleaner that is adjacent to the floor to be cleaned.

In the simplest case, the nozzle can be inserted into the corresponding section of the vacuum cleaner, wherein an additional holding force is applied to the nozzle by the action of the vacuum generated by the suction fan. As an alternative, the nozzle can be fixed by an easy-to-operate snap member, such as a hook on the housing section of the vacuum cleaner and a corresponding recess in the interior of the nozzle, or a recess on the housing section of the cleaner and a corresponding hook in the interior of the nozzle. A bayonet connector can also be used. It is likewise possible to use a sealing ring arranged on the housing section of the vacuum cleaner and annularly surrounding the inner wall of the housing, which corresponds to the narrow or annular groove of the nozzle and, in addition to supporting the holding force, A sealing effect is achieved.

The invention will now be further described in conjunction with the examples.

1‧‧‧ nozzle

2‧‧‧ vacuum cleaner

3‧‧‧Inhalation

4‧‧‧Export

5‧‧‧Exhaust fan

6‧‧‧ dust chamber

7‧‧‧Filter elements

8‧‧‧ filter bag opening

9‧‧‧ check valve

10‧‧‧Sheet section

11‧‧‧ deflection axis

1 is a schematic view of a vacuum cleaner having a nozzle of the present invention; FIG. 2 is a cross-sectional view of a vacuum cleaner having a nozzle according to a first embodiment of the present invention; and FIG. 3 is a vacuum cleaner having a nozzle of a second embodiment of the present invention; Sectional view.

FIG. 1 shows a vacuum cleaner 2, here a hand-held rechargeable vacuum cleaner, which is composed of two mutually connected housing section portions 10. The housing section portions 10 are connected to each other by a plug-in connection or a snap-fit connection. The lower casing section 10 is formed by a suction nozzle 1 having a suction port 3 for sucking a substance to be sucked, such as dust and/or dirt, on the floor to be cleaned. The housing section portions 10 can be separated from each other, for example, by simply pulling apart or by a button operating mechanism.

Figure 2 is a cross-sectional view showing a first embodiment of the vacuum cleaner 2 of the present invention. The suction nozzle 1 forming the first housing section 10 is inserted into the second housing section 10, wherein a vacuum is generated inside the nozzle 1 by the suction fan 5 of the cleaner 2, and the negative pressure is applied to the shells. The body section 10 exerts additional suction and supports the force of its plug-in connection. The suction nozzle 1 is integrally formed with the dust collecting chamber 6, and the filter element 7 is provided in the dust collecting chamber 6. The filter element 7 is constructed as a flat filter liner which is arranged in front of the discharge opening 4 in the interior of the dust collecting chamber 6, and the discharge opening 4 is realized between the dust collecting chamber 6 and the suction fan 5 of the vacuum cleaner 2. Fluid connection. In addition, a check valve 9 is arranged inside the dust collecting chamber 6 so as to be deflectable about the yaw axis 11 so that the object to be sucked into the dust collecting chamber 6 does not enter the suction port 3 of the suction nozzle 1 and does not self-suction nozzle 1 escape.

Fig. 3 is an enlarged section of the cleaner 2 of the second embodiment. In this case, the suction nozzle 1 is likewise connected to the housing section 10 of the vacuum cleaner 2 via a plug-in connection. A filter bag is provided inside the dust collecting chamber 6 as a filter element 7. The filter bag has a filter bag opening 8 which can be closed by a check valve 9. The check valve 9 is also placed opposite the suction opening 3 of the suction nozzle 1 to close the dust collecting chamber 6, so that the sucked air does not enter the area outside the filter element 7 in the dust collecting chamber 6 (ie, the filter bag) external).

In both of the illustrated embodiments, the nozzles 1 are integrally formed, wherein the dust collecting chamber 6 is a body part of the nozzle 1. The nozzle 1 is generally made of cardboard, for example It is produced in which the cardboard can be coated with plastic in the region of the suction port 3 in order to improve moisture resistance. When it is necessary to empty the dust collecting chamber 6, or when the user of the vacuum cleaner 2 requests to change the suction nozzle 1, the user takes out the suction nozzle 1 together with the dust collecting chamber 6 located in the suction nozzle, and the user vacuum cleaner 2, wherein the user vacuum cleaner The two housing section portions 10 of the two are separated from each other, that is, the suction nozzle 1 is separated as the first housing section 10 and the second housing section 10 . The user can dispose the nozzle 1 as a disposable member together with the dust collecting chamber 6, so that dirt, adhesives, and the like can be easily removed from the cleaner 2. Replace the contaminated nozzle 1 with a clean nozzle 1. As shown, the arrangement of the nozzles 1 is achieved, for example, by a plug-in connection between the two housing section portions 10. Of course, as an alternative, fasteners can also be used.

1‧‧‧ nozzle

3‧‧‧Inhalation

4‧‧‧Export

5‧‧‧Exhaust fan

6‧‧‧ dust chamber

7‧‧‧Filter elements

8‧‧‧ filter bag opening

9‧‧‧ check valve

10‧‧‧Sheet section

11‧‧‧ deflection axis

Claims (10)

A suction nozzle (1) for an electric vacuum cleaner (2), the electric vacuum cleaner (2), in particular a hand-held rechargeable vacuum cleaner, wherein the suction nozzle (1) has a suction port (3) and a discharge port (4), The suction port (3) can be arranged in contact with the floor to be cleaned and used for inhaling air carrying the object to be sucked, and the discharge port (4) is used to make the nozzle (1) and the vacuum cleaner (2) The suction fan (5) is fluidly connected, characterized in that the suction nozzle (1) has a dust collecting chamber (6) for receiving the object to be sucked by the suction port (3), and for the nozzle (1) A connector in which the housing section portion (10) corresponding to the cleaner (2) is reversibly connected. The nozzle (1) of claim 1, wherein the dust collecting chamber (6) is integrally formed with the nozzle (1). The nozzle (1) of claim 1, wherein the dust collecting chamber (6) is reversibly arranged on the nozzle (1) and is separable from the nozzle (1). A nozzle (1) according to any of the preceding claims, wherein the dirt collection chamber (6) has a filter element (7) for filtering the inhaled air. The nozzle (1) of claim 4, wherein the filter element (7) is a filter bag disposed inside the dust collecting chamber (6) such that the filter bag opening (8) of the filter bag faces the Suction port (3). The nozzle (1) of claim 4, wherein the filter element (7) is a filter mat disposed in the dust collecting chamber (6) in front of the discharge port (4) along the flow direction of the air. A nozzle (1) according to any of the preceding claims, wherein the nozzle, in particular its dust collecting chamber (6), is at least partially made of cardboard and/or wood and/or bamboo and/or corn and/or Or made from sorghum and/or alga. A nozzle (1) according to any one of the preceding claims, wherein the dust collecting chamber (6) has a check valve (9) on a section adjacent to the suction port (3) for relative placement The suction port (3) The dust collecting chamber (6) is reversibly closed. A vacuum cleaner (2) having a nozzle (1) according to any of the preceding claims, which is in particular a hand-held rechargeable vacuum cleaner. A vacuum cleaner (2) according to claim 9, wherein the casing section (10) on the outer side of the cleaner (2) is formed by the nozzle (1).