WO2018058709A1

WO2018058709A1 - Sprinkler apparatus, condenser assembly and washing-drying machine

Info

Publication number: WO2018058709A1
Application number: PCT/CN2016/102204
Authority: WO
Inventors: 陈志�; 顾传军; 王海峰; 郝秀; 甄理; 陈浩; 谢奇烽; 郭彦飞; 何佳春; 刘海超
Original assignee: 无锡小天鹅股份有限公司
Priority date: 2016-09-30
Filing date: 2016-10-14
Publication date: 2018-04-05
Also published as: EP3521503A1; EP3521503C0; EP3521503B1; EP3521503A4

Abstract

A sprinkler apparatus (100), condenser assembly (10) and washing-drying machine (1), the sprinkler apparatus (100) comprising a body (110), a water separator (120) and an anti-siphon diaphragm (130). A water inlet passage (101), a water outlet passage (102) and an anti-siphon chamber (103) are defined in the body (110), and the anti-siphon chamber (103) is connected to the water inlet passage (101) and the water outlet passage (102); the water separator (120) is provided in the anti-siphon chamber (103) and defines a plurality of flow passages (122); the anti-siphon diaphragm (130) is disposed in the anti-siphon chamber (103) and is located at a side of the water separator (120) facing the water inlet passage (101). The flow passages (122) conduct with the water inlet passage (101) when the anti-siphon diaphragm (130) is located at an on position and are disconnected from the water inlet passage (101) when the anti-siphon diaphragm (130) is located at an off position.

Description

Sprinkler, condenser assembly and washing and drying machine

Technical field

The present invention relates to the field of washing equipment, and more particularly to a spraying device for a condenser of a washing and drying machine, a condenser assembly for the washing and drying machine having the same, and a condenser The washing and drying machine of the components.

Background technique

The sprinkler device on the washing and drying machine of the related art has a siphon hidden danger when the water level is high. For this reason, a one-way valve is usually added to the spray water path to achieve the anti-siphon effect, resulting in high cost, and Increased the complexity of the manufacturing process. In addition, when the sprinkler is working in a low water pressure state, for example, in some areas where the floor is high or the water supply pressure is low, the water pressure in the tap water pipe is more than 0.03 MPa. Small, the spray device can not form a continuous jet of water, the spray effect is not good.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a spray device for a condenser of a washing and drying machine, the spray device for washing the condenser of the integrated machine has anti-siphon, low cost, simple manufacturing process, and spray Good results.

The present invention also provides a condenser assembly for a washer-dryer having the spray device for the condenser of the washer-dryer.

The present invention also provides a washer-dryer having the condenser assembly for a washer-dryer.

A shower device for a condenser of a washer-dryer according to an embodiment of the first aspect of the present invention, the shower device includes: a body, the body body defining a water inlet passage, a water outlet passage, and an anti-siphon chamber The anti-siphon chamber is connected between the water inlet passage and the water outlet passage, the body is provided with a spout communicating with the water outlet passage; and a water dividing member, the water dividing member is disposed in the anti-siphon chamber And defining a plurality of flow passages connecting the water inlet passage and the water outlet passage; an anti-siphon diaphragm disposed in the anti-siphon chamber and located in the water-dividing member One side of the water inlet passage, the anti-siphon diaphragm is adapted to move to an open position under the impact of the influent water flow, the circulation passage being in the water inlet passage when the anti-siphon diaphragm is in the open position Turning on and disconnecting from the water inlet channel when the anti-siphon film is in the closed position.

The shower device for the condenser of the washing and drying machine according to the embodiment of the present invention can prevent the occurrence of siphoning, has low cost, is simple in manufacturing process, and has good spraying effect.

In addition, the shower device for the condenser of the washing and drying machine according to the embodiment of the present invention has the following additional Technical characteristics:

According to some embodiments of the present invention, the water inlet channel is located above the anti-siphon cavity, the maximum diameter of the anti-siphon film is not greater than the distance between two of the flow channels that are furthest apart and the prevention The minimum diameter of the siphon diaphragm is not less than the maximum diameter of the inlet passage.

Preferably, the anti-siphon film has a circular cross section and the diameter of the circle gradually increases in a direction from the water inlet passage to the water outlet passage.

According to some embodiments of the present invention, the water dividing member includes a plurality of water-dividing sheets extending along a radial direction of the anti-siphon chamber and spaced apart along a circumference of the anti-siphon chamber, any two adjacent The flow passage is defined between the water separation sheets.

Preferably, an inner side of one end of each of the water dividing sheets facing the water inlet passage protrudes toward the water inlet passage with respect to the outer side.

According to some embodiments of the invention, the spout comprises a plurality of, the plurality of spouts being spaced apart along a circumference of the water outlet passage.

Optionally, the outlet of each of the spouts is oriented perpendicular to the axial direction of the water outlet passage.

Advantageously, the radial cross-sectional area of each of said spouts is increased in the direction of the flow of water.

According to some embodiments of the invention, the water inlet channel, the water outlet channel and the anti-siphon chamber are coaxially disposed.

According to some embodiments of the present invention, the body includes: a spray inlet section, the spray inlet section has the inlet passage; and a spray outlet section, the spray outlet section having the outlet passage, The spray inlet section and the spray outlet section jointly define the anti-siphon chamber, and the nozzle is disposed on the spray outlet section.

Advantageously, the spray inlet section is welded to the spray outlet section.

A condenser assembly for a washer-dryer according to an embodiment of the second aspect of the present invention includes: a condenser having a heat exchange chamber defined therein, the heat exchange chamber having a cleaning inlet and a cleaning outlet; a spraying device for cleaning the heat exchange chamber, wherein the shower device is a shower device for a condenser of a washing and drying machine according to the first aspect of the present invention, the water outlet passage is connected to the washing inlet a spray pipe, one end of the spray pipe is connected to the water inlet of the washing and drying machine, and the other end is connected to the water inlet channel.

According to the condenser assembly for a washing and drying machine according to the embodiment of the present invention, the use of the shower device as described above can prevent the occurrence of siphoning, and the cost is low, the manufacturing process is simple, and the spraying effect is good.

According to some embodiments of the present invention, the cleaning inlet is disposed at an upper portion of the heat exchange chamber, and the cleaning outlet is disposed at a lower portion of the heat exchange chamber.

According to some embodiments of the present invention, the condenser assembly further includes: a control valve for controlling the opening and closing of the spray pipe, the control valve is disposed on the spray pipe; a controller, the controller Communicate with the control valve.

A washing and drying machine according to an embodiment of the third aspect of the present invention, comprising: a drum having a circulating water inlet; A condenser assembly for a washing and drying machine according to a second aspect of the present invention; a circulating water pipe, one end of which is connected to the circulating water inlet and the other end is connected to the washing outlet.

According to the washing and drying machine of the embodiment of the present invention, the use of the condenser assembly as described above can prevent the occurrence of siphoning, and the cost is low, the manufacturing process is simple, and the spraying effect is good.

According to some embodiments of the present invention, the washer-dryer further includes: a dispenser box, the dispenser box being in communication with the drum; a main wash inlet pipe, the main wash inlet pipe and the water inlet respectively The dispenser box is connected, and the one end of the spray pipe is disposed on the main wash water inlet pipe.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

1 is a schematic structural view of a washing and drying machine according to an embodiment of the present invention;

2 is a schematic structural view of a shower device for a condenser of a washing and drying machine according to an embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a cross-sectional view taken along line B-B of Figure 2;

Figure 5 is a cross-sectional view taken along line C-C of Figure 2;

Figure 6 is a schematic view showing the structure of an anti-siphon film of a shower device according to an embodiment of the present invention.

Reference mark:

Washing and drying machine 1,

a condenser assembly 10 for a washer-dryer,

Spray device 100 for washing the condenser of the integrated machine, water inlet passage 101, water outlet passage 102, anti-siphon chamber 103, nozzle 104, body 110, spray inlet section 111, spray outlet section 112, water separation a piece 120, a water dividing piece 121, a circulation passage 122, an anti-siphon film 130,

The condenser 200, the cleaning inlet 201, the shower pipe 300, the controller 400, the drum 20, the distributor box 30, the main wash water inlet pipe 40, and the water inlet 41.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "inner", "outer", "axial", "radial" Orientation or positional relationship of indications such as "circumferential direction" The present invention and the simplification of the description are based on the orientation or positional relationship shown in the drawings, and are not intended to indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot It is understood to be a limitation of the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, "a plurality" means two or more unless otherwise stated.

A sprinkler apparatus 100 for a condenser of a washing and drying machine according to an embodiment of the first aspect of the present invention, the sprinkler apparatus 100 for a condenser of the washing and drying machine having anti-siphoning, will be described below with reference to Figs. The utility model has the advantages of low cost, simple manufacturing process and good spraying effect.

As shown in FIGS. 1 to 6, a shower device 100 for a condenser of a washing and drying machine according to an embodiment of the present invention includes a body 110, a water dividing member 120, and an anti-siphon film 130.

Specifically, the body 110 defines a water inlet passage 101, a water outlet passage 102, and an anti-siphon chamber 103. The anti-siphon chamber 103 communicates between the water inlet passage 101 and the water outlet passage 102. The body 110 is provided with the water outlet passage 102. Spout 104. The water dividing member 120 is disposed in the anti-siphon chamber 103, and the water dividing member 120 defines a plurality of flow passages 122 communicating with the water inlet passage 101 and the water outlet passage 102. The anti-siphon film 130 is disposed in the anti-siphon chamber 103, and the anti-siphon film 130 is located on a side of the water dividing member 120 facing the water inlet passage 101 (for example, the upper side of the water dividing member 120 shown in the drawing), The anti-siphon diaphragm 130 is adapted to move to the open position under the impact of the influent water flow, and the flow passage 122 is electrically connected to the water inlet passage 101 when the anti-siphon diaphragm 130 is in the open position, when the anti-siphon diaphragm 130 is in the closed position. The circulation passage 122 is disconnected from the water inlet passage 101.

The operation of the shower device 100 for a condenser of a washing and drying machine according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The water enters the water inlet passage 101, and the water pressure blasts the anti-siphon diaphragm 130 from the closed position to the open position, so that the anti-siphon diaphragm 130 abuts against the water dividing member 120, the water enters the anti-siphon chamber 103, and the water flows along the circulation passage. 122 is divided into a plurality of strands and is branched from the side of the water dividing member 120, and is collected and accelerated by the water outlet passage 102 to be ejected from the spout 104 to perform cleaning of the condenser. When the water flows in the reverse direction, that is, when the water flows in the direction from the water outlet passage 102 to the water inlet passage 101, the water pressure impacts the anti-siphon diaphragm 130 from the open position to the closed position, so that the anti-siphon diaphragm 130 leaves the water separation. The member 120 is placed on the water inlet passage 101, so that the circulation passage 122 can be disconnected from the water inlet passage 101 to achieve the purpose of preventing siphoning.

The shower device 100 for the condenser of the washing and drying machine according to the embodiment of the present invention can prevent the siphoning effect without using the one-way valve, reduce the production cost, simplify the manufacturing process, and spray the effect. it is good.

According to some embodiments of the present invention, as shown in FIGS. 2 and 3, the water inlet passage 101 is located above the anti-siphon chamber 103, thereby facilitating the smooth entry of water into the shower device 100 by gravity. The maximum diameter of the anti-siphon film 130 is not greater than the distance The distance between the two most distant flow passages 122 ensures that the water inlet passage 101 and the flow passage 122 are smoothly conducted when the anti-siphon diaphragm 130 is in the open position. Meanwhile, the minimum diameter of the anti-siphon diaphragm 130 is not less than the maximum diameter of the water inlet passage 101, thereby ensuring that the diameter of the anti-siphon diaphragm 130 is larger than the diameter of the water inlet passage 101, and the water is inserted when the anti-siphon diaphragm 130 is in the closed position. The passage 101 and the flow passage 122 can be reliably disconnected, and the water flow cannot flow out from the water inlet passage 101, thereby achieving the effect of preventing siphoning.

Preferably, as shown in FIGS. 3 and 6, the anti-siphon film 130 has a circular cross section, and the diameter of the circle gradually increases in the direction from the water inlet passage 101 to the water outlet passage 102. Thus, when the anti-siphon film 130 is in the open position, the anti-siphon film 130 is deformed toward the water dividing member 120 under the action of water pressure to conduct the water inlet passage 101 and the flow passage 122; the anti-siphon film 130 When in the closed position, the anti-siphon film 130 is completely fitted to the water outlet of the water inlet passage 101 under the action of water pressure, thereby completely breaking the water inlet passage 101 and the circulation passage 122.

According to some embodiments of the present invention, as shown in FIGS. 3 and 4, the water dividing member 120 includes a plurality of water-dividing sheets 121 spaced apart along the circumferential direction of the anti-siphon chamber 103, each of the water-dividing sheets 121 along the anti-siphon The radial extension of the cavity 103 defines a flow passage 122 between any two adjacent water-dividing sheets 121, thereby achieving a splitting of the water flow, which is advantageous for enhancing the spray effect.

Preferably, as shown in FIG. 3, the inner side of one end of each water-dividing sheet 121 facing the water inlet passage 101 protrudes toward the water inlet passage 101 with respect to the outer side, so that when the anti-siphon film 130 is in the open position, The anti-siphon film 130 can stop at the protruding portion of the water-dividing sheet 121, so that the water flow can smoothly enter the circulation passage 122. For example, the inner side of the upper end of each water dividing piece 121 protrudes upward with respect to the outer side. Here, the inner edge of the water dividing piece 121 is a side edge adjacent to the center of the water dividing member 120, and the outer side edge of the water dividing piece 121 is a side edge away from the center of the water dividing member 120.

According to some embodiments of the present invention, as shown in Figures 2 and 5, the spout 104 includes a plurality of spouts 104 spaced circumferentially along the water outlet passage 102 to enhance the cleaning effect on the condenser. Alternatively, as shown in FIGS. 2 and 3, the outlet of each nozzle 104 is oriented perpendicular to the axial direction of the water outlet passage 102, so that the water flow collected in the outlet passage 102 can be ejected from the radial direction of the outlet passage 102, and sprayed. The shower effect is better.

Advantageously, as shown in Figure 3, the radial cross-sectional area of each spout 104 is increased in the direction of the flow of water, thus facilitating the acceleration of water flow from the spout 104, further enhancing the spray effect.

According to some embodiments of the present invention, as shown in FIGS. 2 and 3, the water inlet passage 101, the water outlet passage 102, and the anti-siphon chamber 103 are coaxially disposed, that is, the longitudinal center axis of the water inlet passage 101 and the longitudinal direction of the water outlet passage 102. The central axis coincides with the longitudinal center axis of the anti-siphon chamber 103, thereby further simplifying the manufacturing process and facilitating smooth flow of water.

According to some embodiments of the present invention, as shown in FIGS. 2 and 3, the body 110 includes a spray inlet section 111 and a spray outlet section 112. The spray inlet section 111 has a water inlet passage 101. The spray outlet section 112 has a water outlet passage 102, and the spray inlet section 111 and the spray outlet section 112 together define an anti-siphon chamber 103, and the nozzle 104 is disposed on the spray outlet section 112, thus facilitating the manufacture of the shower device 100. forming. Advantageously, the spray inlet section 111 and the spray outlet section 112 are connected by ultrasonic welding, so that the processing process is simpler.

As shown in FIGS. 1 to 6, a condenser assembly 10 for a washer-dryer according to an embodiment of the second aspect of the present invention includes a condenser 200, a shower device, and a spray pipe 300.

Specifically, a heat exchange chamber (not shown) is defined in the condenser 200, and the heat exchange chamber has a cleaning inlet 201 and a cleaning outlet (not shown). The sprinkler device is a sprinkler device 100 for a condenser of a washer-dryer according to the first aspect of the present invention, and the water outlet passage 102 communicates with the wash inlet 201. One end of the spray pipe 300 is in communication with the water inlet of the washing and drying machine, and the other end of the spray pipe 300 is connected to the water inlet passage 101. Thereby, the water enters the shower pipe 300 from the water inlet, enters the shower device 100 from the water inlet passage 101, and is finally ejected from the water outlet passage 102 and enters the condenser 200 to clean the heat exchange chamber of the condenser 200.

According to the condenser assembly 10 for a washing and drying machine according to the embodiment of the present invention, the siphoning device 100 as described above can prevent the occurrence of siphoning, and the cost is low, the manufacturing process is simple, and the spraying effect is good.

Preferably, as shown in FIG. 1, the cleaning inlet 201 is disposed at an upper portion of the heat exchange chamber, and the cleaning outlet is disposed at a lower portion of the heat exchange chamber, thereby ensuring the cleaning effect of the condenser 200, and facilitating the smooth flow of water into and out of the heat exchange chamber.

According to some embodiments of the invention, as shown in FIG. 1, the condenser assembly 10 further includes a control valve (not shown) and a controller 400. The control valve is disposed on the spray pipe 300, the controller 400 communicates with the control valve, and the controller 400 controls the control valve to realize the opening and closing of the spray pipe 300, so that the spray pipe 300 can be connected when the condenser 200 needs to be cleaned. The spray pipe 300 is turned off when the condenser 200 is not required to be cleaned, so that the use is more flexible and convenient.

As shown in FIGS. 1 to 6, a washing and drying machine 1 according to an embodiment of the third aspect of the present invention includes a drum 20, a condenser assembly 10 for a washing and drying machine according to an embodiment of the second aspect of the present invention. And circulating water pipes (not shown).

Specifically, the drum 20 is provided with a circulating water inlet. One end of the circulating water pipe is connected to the circulating water inlet, and the other end of the circulating water pipe is connected to the washing outlet. Thereby, the water washed through the condenser 200 enters the drum 20 from the washing outlet through the circulating water pipe, and the laundry is washed, thereby improving the water utilization rate.

According to the washing and drying machine 1 of the embodiment of the present invention, the siphon assembly 10 as described above can prevent the occurrence of siphoning, and the cost is low, the manufacturing process is simple, and the spraying effect is good.

According to some embodiments of the present invention, as shown in FIG. 1, the washer-dryer 1 further includes a dispenser box 30 and a main wash water inlet tube 40. The dispenser box 30 is in communication with the drum 20. The main wash water inlet pipe 40 is connected to the water inlet port 41 and the distributor box 30, respectively, and the one end of the spray pipe 300 is disposed on the main wash water inlet pipe 40. Thereby, the water enters the main wash water inlet pipe 40 from the water inlet 41, enters the dispenser box 30 and the spray pipe 300, respectively, and then the detergent in the dispenser box 30 is flushed into the drum 20 to wash the laundry, and The shower device 100 is entered from the shower pipe 300, and the condenser 200 is cleaned.

Other configurations and operations of the washer-dryer 1 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that the term "connected" should be understood broadly, and may be directly connected or indirectly connected through an intermediate medium, and may be two, unless otherwise specifically defined and defined. Internal communication within the component. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example" or "some examples" and the like means the specific features, structures, materials or characteristics described in connection with the embodiments or examples. It is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A shower device for a condenser of a washing and drying machine, characterized in that the shower device comprises:

a body defining a water inlet passage, a water outlet passage and an anti-siphon chamber, wherein the anti-siphon chamber is connected between the water inlet passage and the water outlet passage, and the body is provided to communicate with the water outlet passage Spout

a water dividing member, the water dividing member is disposed in the anti-siphon chamber and defines a plurality of circulation passages connecting the water inlet passage and the water outlet passage;

An anti-siphon film disposed in the anti-siphon cavity and located on a side of the water-dividing member facing the water inlet channel, the anti-siphon film being under the impact of the influent water flow Suitable for moving to an open position, the flow channel is conductive with the water inlet channel when the anti-siphon film is in the open position and the water inlet channel when the anti-siphon film is in the closed position disconnect.
A shower device for a condenser of a washing and drying machine according to claim 1, wherein said water inlet passage is located above said anti-siphon chamber, and said maximum diameter of said anti-siphon diaphragm is not greater than a distance The distance between the two most distant flow passages and the minimum diameter of the anti-siphon diaphragm is not less than the maximum diameter of the water inlet passage.
A shower apparatus for a condenser of a washer-dryer according to claim 2, wherein said anti-siphon diaphragm has a circular cross section and said circular diameter is along said water inlet The direction of the passage to the outlet passage gradually increases.
A shower device for a condenser of a washer-dryer according to claim 1, wherein said water dividing member comprises a plurality of radially extending along said anti-siphon chamber and along said anti-siphon chamber The circumferentially spaced apart water dividing sheets define the flow passage between any two adjacent water dividing sheets.
A shower apparatus for a condenser for a washer-dryer according to claim 4, wherein an inner side of each of said water-dividing sheets facing one end of said water inlet passage is oriented toward the outer side The water inlet channel is convex.
A shower apparatus for a condenser for a washer-dryer according to claim 1, wherein said nozzle includes a plurality of said plurality of said nozzles being spaced apart in a circumferential direction of said water outlet passage.
A shower apparatus for a condenser of a washing and drying machine according to claim 6, wherein an outlet of each of said spouts is oriented perpendicular to an axial direction of said water discharge passage.
A shower apparatus for a condenser of a washer-dryer according to claim 6, wherein the radial cross-sectional area of each of said nozzles is increased in the direction of the flow of the water.
The shower device for a condenser of a washer-dryer according to claim 1, wherein the water inlet passage, the water outlet passage, and the anti-siphon chamber are coaxially disposed.
A shower device for a condenser for a washer-dryer according to any one of claims 1 to 9, wherein the body comprises:

Spraying the water inlet section, the spray inlet section having the water inlet passage;

a spray outlet section, the spray outlet section having the outlet passage, the spray inlet section and the spray outlet section jointly defining the anti-siphon chamber, wherein the nozzle is disposed in the spray water On the paragraph.
A shower device for a condenser of a washer-dryer according to claim 10, wherein said spray inlet section is welded to said spray outlet section.
A condenser assembly for a washer-dryer, comprising:

a condenser, wherein the condenser defines a heat exchange chamber, the heat exchange chamber has a cleaning inlet and a cleaning outlet;

a spraying device for cleaning the heat exchange chamber, the shower device being a shower device for a condenser of a washing and drying machine according to any one of claims 1 to 11, the water outlet channel Connected to the cleaning inlet;

a spray pipe, one end of the spray pipe is connected to the water inlet of the washing and drying machine, and the other end is connected to the water inlet channel.
A condenser assembly for a washer-dryer according to claim 12, wherein said washing inlet is provided at an upper portion of said heat exchange chamber, and said washing outlet is provided at a lower portion of said heat exchange chamber.
The condenser assembly for a washer-dryer according to claim 12, further comprising:

a control valve for controlling the on/off of the spray pipe, the control valve being disposed on the spray pipe;

a controller that communicates with the control valve.
A washing and drying machine, characterized in that it comprises:

a drum having a circulating water inlet;

A condenser assembly for a washer-dryer according to any one of claims 12-14;

a circulating water pipe having one end connected to the circulating water inlet and the other end connected to the washing outlet.
The washing and drying machine according to claim 15, further comprising:

a dispenser box, the dispenser box being in communication with the drum;

The main wash water pipe is connected to the water inlet and the distributor box respectively, and the one end of the spray pipe is disposed on the main wash water pipe.