CN212729644U

CN212729644U - Steam cleaner

Info

Publication number: CN212729644U
Application number: CN202021217249.5U
Authority: CN
Inventors: 郭建刚; 陈家昌; 程诚
Original assignee: Guangdong Xinbao Electrical Appliances Holdings Co Ltd
Current assignee: Guangdong Xinbao Electrical Appliances Holdings Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-19
Anticipated expiration: 2030-06-28

Abstract

The embodiment of the utility model provides a steam cleaner, it includes the casing and locates the steam nozzle on the casing, and steam cleaner still includes a kind of deep pot, water tank set spare, water pump set spare and relief valve of heating. The heating pot is arranged in the shell, and an evaporation cavity of the heating pot is connected with the steam nozzle so that steam generated in the evaporation cavity is sprayed out of the steam nozzle. The water tank component is arranged on one side of the shell. The water pump assembly is arranged in the shell and is connected with the heating pot through a connecting pipeline for pumping water in the water tank of the water tank assembly to the heating pot. The safety valve is arranged in the shell and communicated with the connecting pipeline, so that when the pressure in the connecting pipeline exceeds a preset threshold value, the safety valve is opened to discharge water in the connecting pipeline, and the purpose of safe pressure relief is achieved. The heating pot has the advantages of simple structure, short preheating time, convenience for a user to use, small volume of the whole machine and convenience for the user to carry.

Description

Steam cleaner

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a steam cleaner.

Background

The steam cleaner needs to be filled with clean water as a medium for producing steam, but the steam cleaner in the prior art is generally of a boiler pressure type, has a heavy weight, is long in heating standby time, has unstable steam amount, has certain danger during use, and causes poor use experience of a user. For example, chinese patent publication No. CN1500566A discloses a steam cleaner, which includes a housing, a pressure vessel disposed in the housing, and a steam generator, wherein the product has a large structural size, and when the pressure in the pipe is too high, no safety protection measure is provided, and the safety of the user using the product cannot be ensured.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem that exists among the prior art, the utility model provides a steam cleaner, it makes the pressure in this steam cleaner's the connecting tube exceed when predetermineeing the threshold value through setting up the relief valve, can in time make in the connecting tube water inflow water tank, reaches the purpose of safe pressure release.

The embodiment of the utility model provides a steam cleaner, it includes the casing and locates steam nozzle on the casing, its characterized in that, steam cleaner still includes:

the heating pot is arranged in the shell, and an evaporation cavity of the heating pot is connected with the steam nozzle so that steam generated in the evaporation cavity is sprayed out by the steam nozzle;

the water tank assembly is arranged on one side of the shell;

the water pump assembly is arranged in the shell, is connected with the heating pot through a connecting pipeline and is used for pumping water in the water tank assembly to the heating pot;

the safety valve is arranged in the shell and communicated with the connecting pipeline, so that when the pressure in the connecting pipeline exceeds a preset threshold value, the safety valve is opened to discharge water in the connecting pipeline, and when the pressure in the connecting pipeline exceeds the preset threshold value, the safety valve can be opened to enable water in the connecting pipeline to flow into a water tank of the water tank assembly, so that the purpose of safe pressure relief is achieved. And above-mentioned heat a kind of deep pot and water pump assembly's the mode of setting up make this steam cleaner need not to heat simultaneously whole water in the water tank of water tank assembly, only need with water pump assembly suction to the evaporation intracavity of the heat a kind of deep pot water heat can, can shorten the efficiency that the product produced steam effectively.

In some embodiments, the water tank assembly is inserted into the housing from a side of the housing remote from the steam nozzle such that the water tank assembly is removably disposed within the housing. Above-mentioned water tank set spare of detachable setting can be convenient for the user add the water tank of water and clean water tank set spare.

In some embodiments, a concave portion is arranged on the tank body of the water tank assembly, and a clamping portion facing the inner wall of the shell is arranged in the concave portion;

be equipped with on the inner wall of casing and stretch into joint subassembly in the concave part, work as the water tank subassembly install in when in the casing, joint portion with joint subassembly joint is so that the water tank is located in the casing. Through the joint of above-mentioned joint portion and joint subassembly, the water tank set spare demountable installation of being convenient for is in the casing, and above-mentioned joint subassembly can stretch into the concave part on the box of water tank, can make this steam cleaner compact structure, reduces the product volume effectively.

In some embodiments, the steam cleaner further comprises a mounting bracket disposed in the housing, the mounting bracket comprising a bottom plate for supporting the water pump assembly and the safety valve, and a vertical plate disposed on the bottom plate, the bottom plate dividing the inner cavity of the housing to form a first chamber and a second chamber, the heat generating pot, the water pump assembly and the safety valve being disposed in the first chamber; one side of the second chamber far away from the first chamber is open, and the water tank assembly is embedded into the second chamber through the opening. The bottom plate through above-mentioned mounting bracket can separate water pump assembly and relief valve and water tank set spare to the operation of protecting water pump assembly and relief valve is stable effectively. And the structure is reasonable and compact in design, the size of the product is favorably reduced, and the carrying by a user is convenient.

In some embodiments, the clamping component comprises a buckle shell arranged on the bottom plate and located in the second cavity, and a spring and a buckle arranged in the buckle shell, wherein the spring is sleeved on the buckle and used for applying an acting force which enables the buckle to move towards the direction close to the clamping portion to the buckle, so that when the water tank component is arranged in the second cavity, the clamping portion pushes the buckle to enable the buckle to move towards the direction far away from the clamping portion, and after the clamping portion crosses the buckle, the buckle extends out of the clamping portion under the action of the spring. Through the backstop of buckle to joint portion to make water tank set spare can stable installation in the casing, and above-mentioned mounting means is simple, the user operation of being convenient for.

In some embodiments, a switch button is arranged on the outer wall of the shell, the switch button is electrically connected with the water pump assembly, and the switch button is used for controlling the water pump assembly to be started. The mode that above-mentioned switch button control water pump assembly opened is simple, can realize that a key opens, and the user of being convenient for uses.

In some embodiments, the safety valve is communicated with a water tank of the water tank assembly, the water tank is provided with a pressure relief hole, the safety valve is connected with the pressure relief hole through a pressure relief pipeline so as to enable water in the connecting pipeline to flow into the water tank when the safety valve is opened, and the pressure relief pipeline is provided with a one-way valve so as to prevent the water in the water tank from being sucked back to the pressure relief pipeline by the safety valve and ensure stable operation of a product.

In some embodiments, the water tank of the water tank assembly has a water suction hole, the water pump assembly comprises a water pump, a water suction pipeline communicated with the water suction hole, and a one-way valve arranged on the water suction pipeline, and the one-way valve is used for preventing water from being sucked back into the water tank, so that the stable operation of products is ensured, and the products are prevented from being damaged due to suck-back.

In some embodiments, the steam cleaner further comprises a temperature control device disposed on the heating pot, for detecting the temperature in the heating pot, and turning off the heating pot when the temperature in the heating pot exceeds a preset threshold. The temperature control device protects the heating pot, so that accidents caused by overheating of the heating pot are avoided, and the safety of products is improved.

In some embodiments, the steam nozzle has an exit orifice diameter of 3 mm or less.

In some embodiments, the steam nozzle is provided with a nipple connection fixture for connecting with a fitting, the fitting including one or more of an extension tube, a brush, and an elbow nipple.

Compared with the prior art, the utility model discloses beneficial effect lies in: the utility model discloses a water pump assembly takes out the water in the water tank set spare to generating heat in the a kind of deep pot for the structure of product can design in a flexible way and can reduce the volume of product, and through set up the relief valve on the connecting tube that a kind of deep pot and water pump assembly are connected generating heat, when making pressure in the connecting tube exceed and predetermine the threshold value, the relief valve can be opened and made the water discharge in the connecting tube, thereby reaches the purpose of safe pressure release. In addition, above-mentioned heat a kind of deep pot and water pump assembly's the mode of setting up make this steam cleaner need not to heat simultaneously whole water in the water tank set spare when using, only need with water pump assembly suction to the evaporation intracavity of a kind of deep pot that generates heat water heat can, can shorten the efficiency that the product produced steam effectively, and generate heat a kind of deep pot and steam nozzle lug connection, the steam that the a kind of deep pot produced that generates heat can be discharged nearby by steam nozzle, has improved the effect of product spun steam. In addition, the arrangement of the heating pot and the water pump component reduces the weight of the whole machine, and is convenient for carrying and using.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

FIG. 1 is a schematic view of a steam cleaner according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a steam cleaner in accordance with an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of a steam cleaner in accordance with an embodiment of the present invention;

fig. 4 is an exploded view of a steam cleaner according to an embodiment of the present invention.

The members denoted by reference numerals in the drawings:

1-a shell; 11-a clamping assembly; 12-a snap housing; 13-a spring; 14-buckling; 2-steam nozzles; 3-heating and cooking; 31-a temperature control device; 4-a water tank assembly; 41-a water tank; 42-a recess; 43-a snap-in part; 44-pressure relief holes; 45-water suction holes; 5-a water pump assembly; 51-a water pump; 52-a one-way valve; 6-connecting a pipeline; 7-a safety valve; 71-a one-way valve; 8-a mounting frame; 81-a bottom plate; 82-vertical plate; 9-switch key.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and the specific embodiments, but not to be construed as limiting the invention.

The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present invention, when it is described that a specific device is located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

The embodiment of the utility model provides a steam cleaner, as shown in fig. 1, steam cleaner includes casing 1 and locates steam nozzle 2 on casing 1, and steam cleaner still includes a heat pot 3, water tank set spare 4, water pump assembly 5 and relief valve 7 (as shown in fig. 2). The heating pot 3 is arranged in the shell 1, and an evaporation cavity of the heating pot 3 is connected with the steam nozzle 2, so that steam generated in the evaporation cavity is sprayed out from the steam nozzle 2. The water tank assembly 4 is provided in the housing 1. The water pump assembly 5 is disposed at one side of the housing 1, the water pump assembly 5 is connected to the heating pot 3 through a connecting pipe 6, the water pump assembly 5 is used for pumping water in the water tank 41 of the water tank assembly 4 to the heating pot 3 through the connecting pipe 6, and the water in the water tank 41 is heated through the evaporation cavity in the heating pot 3 to generate steam. A safety valve 7 is provided in the housing 1 and communicates with the connecting duct 6, so that when the pressure in the connecting duct 6 exceeds a preset threshold, the safety valve 7 opens to allow the water in the connecting duct 6 to drain. Above-mentioned heat a kind of deep pot 3 and water pump assembly 5's mode of setting up makes this steam cleaner need not to heat simultaneously whole water in the water tank assembly 4, only need with water pump assembly 5 suction to generate heat a kind of deep pot 3's the evaporation intracavity water heat can, can shorten the efficiency that the product produced steam effectively, and above-mentioned structure makes the weight of complete machine can reduce, be convenient for be used for carrying and using.

It will be appreciated that the safety valve 7 may be connected to the connecting pipe 6 by means of a pipe and tee, and that the pump assembly 5 draws water from the tank assembly 4 into the connecting pipe 6 when the pump assembly 5 is activated, and to the safety valve via the tee and pipe which communicate with the safety valve 7. When the pressure in the connecting pipeline 6 exceeds a preset threshold value, the steam cleaner is easy to cause safety accidents, so that through the arrangement of the safety valve 7, when the pressure in the connecting pipeline 6 is too high, the safety valve 7 is opened to discharge water in the connecting pipeline 6, and the purpose of pressure relief is achieved. Wherein, the water discharged from the safety valve 7 can be discharged to the outside of the steam cleaner and also to the water tank 41.

The utility model discloses a water pump assembly 5 is taken out water in the water tank set spare 4 to the a kind of deep pot 3 that generates heat in for the structure of product can design in a flexible way and can reduce the volume of product, and through set up relief valve 7 on the connecting tube 6 that a kind of deep pot 3 and water pump assembly 5 are connected generates heat, when making the pressure in the connecting tube 6 exceed and predetermine the threshold value, relief valve 7 can open the water discharge that makes in the connecting tube 6, thereby reaches the purpose of safe pressure release. In addition, above-mentioned heat a kind of deep pot 3 and water pump assembly 5's mode of setting make this steam cleaner need not to heat simultaneously whole water in the water tank assembly 4 when using, only need with water pump assembly 5 suction to the water that generates heat a kind of deep pot 3's evaporation intracavity heat can, can shorten the efficiency that the product produced steam effectively, and generate heat a kind of deep pot 3 and steam nozzle 2 lug connection, the steam that generates heat a kind of deep pot 3 production can be by steam nozzle 2 near discharge, the effect of product spun steam has been improved. In addition, the arrangement of the heating pot 3 and the water pump assembly 5 reduces the weight of the whole machine, and is convenient for carrying and using.

In some embodiments, the water tank assembly 4 is inserted into the housing 1 from a side of the housing 1 remote from the steam nozzle 2 (as shown in fig. 2 and 3) such that the water tank assembly 4 is removably disposed within the housing 1. Above-mentioned water tank set spare 4 of detachable setting can be convenient for the user add water and clean water tank 41, and the user can be with water tank set spare 4 back of dismantling, adds water again in to water tank set spare 4, need not to operate the complete machine of steam cleaner.

In some embodiments, the tank body of the water tank 41 of the water tank assembly 4 is provided with a concave portion 42, as shown in fig. 3 and 4, a clamping portion 43 facing the inner wall of the housing 1 is provided in the concave portion 42; be equipped with on the inner wall of casing 1 and stretch into the joint subassembly 11 in the concave part 42, when water tank subassembly 4 was installed in casing 1, joint portion 43 and joint subassembly 11 joint were so that water tank 41 is positioned in casing 1. Through the joint of the joint part 43 and the joint component 11, the water tank component 4 can be detachably mounted in the shell 1 conveniently, and the joint component 11 can extend into the concave part 42 on the tank body of the water tank 41, so that the steam cleaner has a compact structure, and the product volume is effectively reduced.

In some embodiments, the steam cleaner further comprises a mounting bracket 8 disposed in the housing 1, as shown in fig. 4, the mounting bracket 8 comprises a bottom plate 81 for supporting the water pump assembly 5 and the safety valve 7, and a vertical plate 82 disposed on the bottom plate 81, the bottom plate 81 divides the inner cavity of the housing 1 to form a first chamber and a second chamber which are independent, and the heat generating pot 3, the water pump assembly 5 and the safety valve 7 are disposed in the first chamber; one side of the second chamber far away from the first chamber is open, and the water tank assembly 4 is embedded into the second chamber through the opening. The water pump assembly 5 and the safety valve 7 can be separated from the water tank assembly 4 by the bottom plate 81 of the mounting bracket 8 to effectively protect the water pump assembly 5 and the safety valve 7 from being stably operated. And the structure is reasonable and compact in design, the size of the product is favorably reduced, and the carrying by a user is convenient.

In some embodiments, the latch assembly 11 includes a latch housing 12 disposed on the bottom plate 81 and located in the second chamber, and a spring 13 and a latch 14 (as shown in fig. 3 and 4) disposed in the latch housing 12, the latch 14 is configured to interact with the latch portion 43, the spring 13 is sleeved on the latch 14 and configured to apply a force to the latch 14 to move the latch 14 in a direction close to the latch portion 43, so that when the water tank assembly 4 is installed in the second chamber, the latch portion 43 pushes the latch 14 to move the latch 14 in a direction away from the latch portion 43, the latch 14 presses the spring 13 to compress the spring 13, and after the latch portion 43 passes over the latch 14, the latch 14 extends under a restoring force of the spring 13 to stop the latch portion 43, and the latch 14 stops the latch portion 43, so that the water tank assembly 4 can be stably installed in the housing 1, and the installation is simple, the operation of the user is convenient.

In some embodiments, the first chamber is formed with a neck portion for receiving the connecting duct 6, the neck portion being configured to reduce the volume of the product and to facilitate handling by a user, such that the steam cleaner can be a hand-held steam cleaner for user convenience.

In some embodiments, a switch button 9 is disposed on an outer wall of the housing 1, the switch button 9 is electrically connected to the water pump assembly 5, and the switch button 9 is used for controlling the water pump assembly 5 to be turned on. When the user uses the steam cleaner, the steam cleaner can be connected with an external power supply, the heating pot 3 is preheated at the moment, the user can start the water pump assembly 5 by pressing the switch key 9, and water in the water tank assembly 4 is pumped into the evaporation cavity of the preheated heating pot 3, so that steam generated by heating is sprayed out from the steam nozzle 2. The mode that the switch button 9 controls the water pump assembly 5 to be opened is simple, one-key opening can be realized, and the use by a user is facilitated.

In some embodiments, the safety valve 7 is communicated with the water tank 41 of the water tank assembly 4, the water tank 41 is provided with a pressure relief hole 44, as shown in fig. 3, the safety valve 7 is connected with the pressure relief hole 44 through a pressure relief pipeline to enable water in the connecting pipeline 6 to flow into the water tank 41 when the safety valve 7 is opened, and the pressure relief pipeline is provided with a one-way valve 71 to prevent water in the water tank 41 from being sucked back to the safety valve 7, so as to ensure stable operation of the product.

In some embodiments, the water tank 41 of the water tank assembly 4 has a water suction hole 45, as shown in fig. 3, the water pump assembly 5 includes a water pump 51, a water suction pipe communicated with the water suction hole 45, and a check valve 52 disposed on the water suction pipe, and the check valve 52 is used for preventing water from being sucked back into the water tank 41, so as to ensure stable operation of the product and prevent the product from being damaged due to suck-back.

In some embodiments, the steam cleaner further includes a temperature control device 31 (shown in fig. 2 and 4) provided on the heat generating pot 3 for detecting the temperature inside the heat generating pot 3 and turning off the heat generating pot 3 when the temperature inside the heat generating pot 3 exceeds a preset threshold. The temperature control device 31 protects the heating pot 3, so that accidents caused by overheating of the heating pot 3 are avoided, and the safety of products is improved.

In some embodiments, the diameter of the outlet orifice of the steam nozzle 2 is 3 mm or less.

In some embodiments, the steam nozzle 2 is provided with a nipple connection fixture for connecting with a fitting, including one or more of an extension tube, a brush, and an elbow nipple, and may further include a lint brush, a window wiper, and the like for cleaning.

Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or variations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. Additionally, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. A steam cleaner comprising a housing and a steam nozzle provided on the housing, the steam cleaner further comprising:

the water tank assembly is arranged on one side of the shell;

and the safety valve is arranged in the shell and is communicated with the connecting pipeline, so that when the pressure in the connecting pipeline exceeds a preset threshold value, the safety valve is opened to discharge the water in the connecting pipeline.

2. The steam cleaner of claim 1, wherein the water tank assembly is inserted into the housing from a side of the housing remote from the steam nozzle such that the water tank assembly is removably disposed within the housing.

3. The steam cleaner of claim 2, wherein a recess is formed on the tank body of the water tank assembly, and a catching portion facing an inner wall of the housing is formed in the recess;

be equipped with on the inner wall of casing and stretch into joint subassembly in the concave part, work as the water tank subassembly install in when in the casing, joint portion with joint subassembly joint is so that the water tank is located in the casing.

4. The steam cleaner of claim 3, further comprising a mounting bracket disposed within the housing, the mounting bracket including a bottom plate for supporting the water pump assembly and the safety valve, the bottom plate separating the interior of the housing to form separate first and second chambers, and a riser plate disposed on the bottom plate, the heat generating pot, the water pump assembly, and the safety valve being disposed within the first chamber; one side of the second chamber far away from the first chamber is open, and the water tank assembly is embedded into the second chamber through the opening.

5. The steam cleaner of claim 4, wherein the latch assembly includes a latch housing disposed on the base plate and located in the second chamber, and a spring and a latch disposed in the latch housing, the spring is sleeved on the latch for applying an acting force to the latch to move the latch in a direction close to the latch portion, so that when the water tank assembly is installed in the second chamber, the latch portion pushes against the latch to move the latch in a direction away from the latch portion, and after the latch portion passes over the latch, the latch extends out of the latch portion under the action of the spring to stop the latch portion.

6. The steam cleaner of claim 5, wherein a switch button is disposed on an outer wall of the housing, the switch button is electrically connected to the water pump assembly, and the switch button is used for controlling the water pump assembly to be turned on.

7. The steam cleaner of claim 1, wherein the safety valve is in communication with a tank of the tank assembly, the tank having a pressure relief hole, the safety valve being connected to the pressure relief hole via a pressure relief conduit for allowing water in the connecting conduit to flow into the tank when the safety valve is opened, the pressure relief conduit having a one-way valve.

8. The steam cleaner of claim 1, wherein the tank of the tank assembly has a suction opening, the pump assembly including a pump, a suction line in communication with the suction opening, and a one-way valve on the suction line for preventing back-suction of water into the tank.

9. The steam cleaner of claim 1, further comprising a temperature control device disposed on the heat generating pot for detecting a temperature within the heat generating pot and turning off the heat generating pot when the temperature within the heat generating pot exceeds a preset threshold.

10. The steam cleaner of claim 1, wherein the steam nozzle has an exit orifice diameter of 3 mm or less.

11. A steam cleaner according to claim 1, wherein the steam nozzle is provided with a nipple connection fixture for connection with an accessory, the accessory comprising one or more of an extension tube, a brush and an elbow fitting.