CN112854387A

CN112854387A - Foam generating device and intelligent toilet bowl using same

Info

Publication number: CN112854387A
Application number: CN202110018135.0A
Authority: CN
Inventors: 张建明
Original assignee: Hanyu Group JSCL
Current assignee: Hanyu Group JSCL
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-05-28
Anticipated expiration: 2041-01-07
Also published as: CN112854387B

Abstract

A foam generating apparatus comprising a first solenoid valve for supplying washing water, a detergent box for supplying detergent, further comprising: the detergent supply part comprises a cylinder and a piston assembly which is arranged in the inner cavity of the cylinder and can axially move, and the piston assembly and a partition plate in the inner cavity of the cylinder form an opening and closing function to control the conduction or the isolation of the detergent; and a foam jetting part having a hollow tube body forming a mixing chamber, wherein the washing water and the detergent from the detergent supply part are mixed in the mixing chamber and jetted from a foam jetting port at the rear end of the tube body to form foam. The foam generating device of the structure utilizes the water source pressure of washing water to complete the automatic leading-in of the detergent, does not adopt electric elements such as an electric pump and the like, and has low cost and reduced power consumption.

Description

Foam generating device and intelligent toilet bowl using same

Technical Field

The invention relates to a foam generating device and an intelligent toilet bowl applying the same, wherein IPC is classified into E03D 9/02, E03D 11/02, B01F 3/04 and E03C 1/046.

Background

The prior art foam generating devices propose a method of providing a device called an ejector, which constricts the diameter of the partial path, on the flow path of the flushing water flowing. The ejector is supplied with air and detergent from the outside. When the washing water flows into the ejector, a jetting effect that becomes a negative pressure inside the ejector is generated, air is introduced into the ejector by the jetting effect, and the washing water, the air, and the detergent are mixed to generate bubbles to flow into the urinal.

The typical structure of the detergent can be seen in Chinese patent with publication No. CN107923168B, the detergent is pumped into the ejector by an electric pump to be mixed, the structure is complex and the electricity is consumed.

Other terms and common general knowledge can be found in national standard GB/T34549-.

Disclosure of Invention

In order to solve the above problems, the present invention provides a foam generating apparatus including a first solenoid valve for supplying washing water, a detergent box for supplying detergent, further comprising:

the detergent supply part comprises a barrel and a partition plate in the inner cavity of the barrel, the partition plate is provided with a through hole positioned in the center or/and a flow guide hole surrounding the periphery of the through hole, the inner cavity of the barrel is provided with a piston assembly with a piston rod penetrating through the through hole and capable of axially moving, the piston assembly comprises a piston and a sliding rod fixedly connected with the piston as the piston rod, a starting and closing piece fixedly connected with the sliding rod for starting and closing the through hole or/and the flow guide hole, and an elastic element for providing resetting force for the sliding rod, and the barrel is divided into a watertight flushing water cavity and a detergent cavity by the piston; the detergent cavity is divided into a detergent inlet cavity and a detergent outlet cavity by the partition board and is communicated or isolated along with the opening and closing of the through hole or/and the flow guide hole by the opening and closing piece; the washing water cavity is provided with a water outlet and a water inlet connected to the first electromagnetic valve, the detergent inlet cavity is provided with a detergent inlet connected to the detergent box, and the detergent outlet cavity is provided with a detergent outlet.

The foam spraying part is provided with a pipe body, the hollow pipe body is a mixing cavity, a first liquid inlet and a second liquid inlet are formed in the front end face of the mixing cavity, the first liquid inlet is communicated with a water outlet, the second liquid inlet is communicated with a detergent outlet, a check valve is arranged on the second liquid inlet, and washing water and detergent are sprayed out from a foam spraying port formed in the rear end of the pipe body after being mixed in the mixing cavity.

According to the foam generating device with the structure, flushing water enters the flushing water cavity, water pressure overcomes the restoring force of the elastic element to push the piston assembly to slide rightwards, the opening and closing piece leaves, a detergent enters the cavity and is communicated with the detergent discharging cavity through the through hole and/or the flow guide hole, detergent in the detergent box enters the foam spraying part mixing cavity under the pushing of gravity and the piston, and foam is sprayed out from the foam spraying port at the rear end of the pipe body after being mixed with the flushing water from the flushing water cavity. Therefore, the detergent is introduced by using the water source pressure of the washing water, the electric pump is not needed for driving, the cost is low, and the power consumption is reduced.

Furthermore, the foam spraying port of the foam spraying part is provided with a foaming film with a mesh structure and a foam spraying port cover, and the foam spraying port cover is fixedly connected with the pipe body and is pressed to limit the foaming film. The large number of fine mesh structures of the foamed film can better utilize the tension of the liquid to form uniform foam.

Preferably, the hollow interior of the tube body is further formed with a suction cavity and a throat portion, the suction cavity, the throat portion and the mixing cavity are sequentially connected, the suction cavity is internally provided with a nozzle coaxial with the throat portion, and a suction port is arranged on the side wall of the suction cavity at the periphery of the nozzle. Through the flow path design forming the throat structure, the suction cavity area at the periphery of the nozzle becomes a negative pressure area, a jet effect is formed, air is sucked into the suction cavity from the air suction port through the jet effect, so that flushing water, air and detergent in the suction cavity enter the mixing cavity together to be mixed, air mixing is increased, and foam ejection is facilitated.

Further, the air inlet is connected with the outside air directly or through an air pump by a duct. By arranging the air pump on the pipeline, the air quantity can be controlled, and the foam generation quantity can be adjusted according to the requirement.

In addition, still provide an intelligent toilet bowl, including the urinal, wash the route, the foam route, its characterized in that: the urinal also comprises any foam generating device which is arranged on the foam path and is used for outputting foam to the urinal.

By arranging the foam generating device and the foam spraying path on the intelligent toilet bowl, foam can be covered on the water surface of the urinal, the phenomenon of splashing of liquid generated by dropping excrement can be inhibited, and the urinal can be flushed more cleanly.

Drawings

Fig. 1 is a schematic perspective view of an intelligent toilet to which the foam generating apparatus of the present invention is applied.

FIG. 2 is one of schematic piping structures of an intelligent toilet stool to which the foam generating apparatus of the present invention is applied.

FIG. 3 is a second schematic view of the piping structure of the intelligent toilet bowl to which the foam generating apparatus of the present invention is applied.

FIG. 4 is a schematic structural view of embodiment 1 of the foam generating apparatus of the present invention in a non-conductive state of the first solenoid valve.

FIG. 5 is an axial sectional view of a detergent supply part of embodiment 1 of a bubble generating apparatus according to the present invention.

Fig. 6 is an enlarged view of a portion I of fig. 5.

FIG. 7 is a schematic structural view of embodiment 1 of the foam generating apparatus of the present invention in a state where the first solenoid valve is turned on.

FIG. 8 is a schematic structural view of embodiment 2 of the foam generating apparatus of the present invention in a state where the first solenoid valve is turned on.

FIG. 9 is an axial sectional view showing a modified example of the detergent supply section of the foam generating apparatus according to the present invention.

Fig. 10 is an enlarged view of a portion ii of fig. 9.

Reference numerals:

a flush path C1, a foam path C2, a first branch flush path C11, a second branch flush path C12, a first mixing path C21, a second mixing path C22, a third mixing path C23;

the foam generating device 50, the first electromagnetic valve 1, the detergent supply part 2, the cylinder 21, the partition plate 22, the through hole 221, the flow guide hole 222, the piston assembly 20, the piston 201, the opening and closing part 202, the sliding rod 203, the cylindrical compression spring 204, the flushing water chamber 23, the water inlet 231, the water outlet 232, the detergent inlet chamber 24, the detergent inlet 241, the detergent outlet chamber 25, the detergent outlet 251, the guide hole 26, the detergent box 3, the air pump 4, the foam spraying part 5, the pipe body 51, the mixing chamber 511, the first liquid inlet 512, the second liquid inlet 513, the check valve 52, the foaming film 53, the foam spraying port cover 54, the foam spraying port 55, the throat 514, the suction chamber 515, the nozzle 56, and the air suction port 516;

the intelligent toilet 100, a flushing water solenoid valve 101, a flushing water tank 102, a flushing water pump 103, a water spray head 104, a urinal 105, a first water spray 106, a sewage outlet 107 and a second water spray 108.

Detailed Description

As shown in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. When explaining the structure of the foam generating device and the intelligent toilet pipe, the direction in which the fluid flows is referred to as the front or front side, and the direction in which the fluid flows out is referred to as the rear or rear side. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Fig. 1 is a schematic perspective view of an intelligent toilet 100. The intelligent toilet 100 shown in fig. 1 is equipped with a flush tank 102 and a flush pump 103. The flush water stored in the flush tank is pressurized by the flush water pump 103 and then discharged to the toilet bowl 105 through the first water jet 106 located at the upper portion of the toilet bowl 105 and the second water jet 108 located at the lower portion of the toilet bowl 105, and the flush water discharged from the first water jet 106 flows on the water guide rail of the inner wall surface of the upper portion of the toilet bowl 105 and rotates on the inner wall surface of the toilet bowl 105 to fall. A functional unit (not shown) for providing a human body private part washing function, a warm air function, and the like may be mounted on the rear end portion of the intelligent toilet 100. In the intelligent toilet of other embodiments, the flush water tank 102 and the flush water pump 103 may not be provided, the solenoid valve is directly connected to the tap water source, the solenoid valve is opened, and the flush water is guided by the tap water pressure to the first water jet 106 located at the upper part of the urinal 105 of the intelligent toilet and the second water jet 108 located at the lower part of the urinal 105 to be jetted out to the urinal 105

Fig. 2 and 3 are schematic views of piping structures of an intelligent toilet stool to which the foam generating apparatus of the present invention is applied.

As shown in fig. 2, the intelligent toilet 100 includes a flush water solenoid valve 101 and a first solenoid valve 1 that communicate with a tap water source. When the flush water solenoid valve is in the open state, flush water flows into the flush tank 102 and is stored in the flush tank 102 (flush path C1). When a user operates a flush switch (not shown), a flush water pump 103 located at a lower portion of the smart toilet 100 is operated, and flush water of a flush water tank 102 is pumped to a sprinkler head 104 and is sprayed from a first water spray 106.

As shown in fig. 3, the sprinkler head 104 is branched into two sprinkler pipes, and flush water of the first sprinkler pipe is ejected from the first water jet 106 of the water guide rail located on the inner wall surface of the upper part of the toilet bowl 105 (the first branch flush path C11); the flushing water of the second water jet is jetted out from the second water jet 108 located at the lower drain 107 of the bowl (second branch flushing path C12).

The paths C1, C11, and C12 constitute flush paths for guiding flush water to the toilet bowl 105. In the intelligent toilet 100 according to the present embodiment, a bubble path C2 for guiding bubbles to the toilet bowl 105 is provided separately from the flush water conduit path. A foam generating means 50 for generating foam is provided in the foam path, and includes a foam path C2 composed of a first solenoid valve, a detergent supply part 2, a detergent box 3, and a foam spraying part 5, and is further subdivided into a first mixing path C21 for supplying washing water, a second mixing path C22 for supplying detergent, and a third mixing path C23 for supplying air. In some embodiments, as shown in FIG. 3, the foam path C2 is in communication with the flush path C1, and the mixed detergent liquid is directed to the sprinkler head 104 for emission from the first water jet 106, thus saving a separate foam outlet and its mounting structure for connection to a toilet. The foam generating apparatus 50 will be described in detail below.

Foam generating device example 1

FIG. 4 is a schematic structural view of embodiment 1 of the foam generating apparatus of the present invention in a non-conductive state of the first solenoid valve 1; FIG. 5 is an axial sectional view of a detergent supply part of embodiment 1 of a bubble generating apparatus according to the present invention; FIG. 6 is an enlarged view of section I of FIG. 5; fig. 7 is a schematic structural view of embodiment 1 of the foam generating apparatus of the present invention in a state where the first solenoid valve 1 is turned on.

As shown in fig. 4 to 6, the foam generating apparatus 50 includes: a first solenoid valve 1 connected to a water supply source, a detergent supply part 2, a detergent box 3, a foam spraying part 5, and a control part 6 (not shown). The first solenoid valve 1 is generally a pilot-operated solenoid valve.

The detergent supply part 2 comprises a cylinder 21 with a hollow inner cavity, a partition plate 22 is arranged in the inner cavity of the cylinder 21, a through hole 221 is arranged in the center of the partition plate 22, a protruding part is formed by extending the center of the rear end face of the inner cavity of the cylinder 21 outwards, a guide hole 26 is arranged in the protruding part, a piston assembly 20 is further arranged in the inner cavity of the cylinder 21, the piston assembly 20 comprises a piston 201 located at the front end of the assembly, a sliding rod 203 fixedly connected with the piston, the sliding rod 203 penetrates through the through hole 221, the tail end of the sliding rod is sleeved into the guide hole 26, an opening and closing part 202 is further fixedly connected onto the sliding rod 203, and the opening and closing part 202 forms an opening or closing effect on. A cylindrical compression spring 204 is sleeved on the periphery of the sliding rod 203 and two ends of the sliding rod abut against the piston 201 and the isolation plate 22, and is arranged between the piston 201 and the isolation plate 22 to provide the restoring force of the piston assembly 20. The piston 201 separates the inner cavity of the cylinder 21 into a washing water cavity 23 and a detergent cavity in a watertight manner, and the partition plate 22 further separates the detergent cavity into a detergent inlet cavity 24 and a detergent outlet cavity 25. Wherein, the flushing water cavity 23 is provided with a water inlet 231 connected to the first electromagnetic valve 1 and a water outlet 232 for discharging flushing water; the detergent inlet chamber 24 is provided with a detergent inlet 241 communicated with the detergent box 3, and the detergent outlet chamber 25 is provided with a detergent outlet 251 for discharging the detergent. In order to obtain good sealing performance, a piston sealing ring is generally arranged on the peripheral surface of the piston 201, and the piston sealing ring can be made of wear-resistant and elastic polytetrafluoroethylene; the closure 202 is typically made of a resilient plastic or rubber material, preferably nitrile rubber.

As shown in fig. 4, when the first solenoid valve 1 is operated to be closed, washing water from a tap water source is not conducted; the piston assembly 20 is reset by the cylindrical compression spring 204 as an elastic element, the opening and closing member is attached to the isolation plate 22 to close the through hole 221, and the detergent in the detergent box 3 is not conducted.

As shown in fig. 7, when the first solenoid valve 1 is operated to open, the washing water from the tap water source flows into the washing water chamber 23 from the water inlet 231 and flows toward the foam spraying portion 5 from the water outlet 232, and at the same time, the washing water with pressure pushes the piston assembly 20 to slide rightward against the force of the cylindrical compression spring 204, and at this time, the shutter 202 is separated from the partition plate 22 by a certain distance, the through hole 221 is opened, and the detergent enters the detergent inlet chamber 24 from the detergent inlet 241 and then enters the detergent outlet chamber 25 through the through hole 221, and the detergent is discharged toward the foam spraying portion 5 from the detergent outlet 251 under the action of the gravity of the detergent and the compressive force of the piston 201 compressing the detergent chamber rightward.

The foam spraying part 5 comprises a pipe body 51 with a hollow cavity inside, the inner cavity of the pipe body 51 is preferably designed into a trumpet-shaped mixing cavity 511, the front end surface of the mixing cavity 511 is provided with a first liquid inlet 512 connected to a water outlet 232 and a second liquid inlet 513 connected to a detergent outlet 251; the rear end surface of the mixing chamber 511 is provided with a plurality of foaming films 53 having a fine mesh structure, and is pressed and limited by a foam discharge port cover 54 fixedly connected to the pipe body 51. A check valve 52, preferably a duck bill check valve, is arranged at the second loading port 513 to allow passage of fluid in a direction from the detergent outlet 251 towards the second loading port 513, but not in a direction from the second loading port 513 towards the detergent outlet 251.

In the foam generating apparatus 50 having the above-mentioned construction, when the user operates the flush switch, the control part 6 controls the first solenoid valve 1 to be in the open state, thereby supplying the flush water into the flush water chamber 23, the flush water flows into the mixing chamber 511 through the drain port 232 and the first inlet port 512, and at the same time, pushes the piston assembly 20 to slide rightward, the shutter 202 is separated from the partition plate 22 by a certain distance, the through hole 221 is opened, the detergent enters the detergent inlet chamber 24 from the detergent inlet 241, and then enters the detergent outlet chamber 25 through the through hole 221, and the detergent flows from the detergent outlet 251 to the second inlet port 513 into the mixing chamber 511 by the weight of the detergent and the compressive force of the piston 201 compressing the detergent chamber rightward. In the mixing chamber 511, the flushing water and the detergent are mixed and sprayed from the foam spraying port 55 to the water surface of the toilet bowl through the foaming film 53 having a mesh structure to form foam.

Foam generating device example 2

In this embodiment, the change of the foam ejecting section 5 is mainly related to the comparison with the embodiment 1, and as shown in fig. 8, the inner cavity of the tube body 51 is composed of a suction cavity 515, a throat section 514 with a reduced diameter, and a trumpet-shaped mixing cavity 511 in this order, and a nozzle 56 coaxial with the throat section 514 is further provided in the suction cavity, and a gap is provided between the nozzle 56 and the throat section 514. The front end surface of the suction cavity 515 is provided with a first liquid inlet 512 connected to the water outlet 232 and a second liquid inlet 513 connected to the detergent outlet 251. Similarly, the rear end surface of the mixing chamber 511 is provided with a foaming film 53 having a plurality of fine mesh structures, and is pressed and held by a foam discharge port cover 54 fixedly connected to the pipe body 51. A check valve 52, preferably a duck bill check valve, is arranged at the second loading port 513 to allow passage of fluid in a direction from the detergent outlet 251 towards the second loading port 513, but not in a direction from the second loading port 513 towards the detergent outlet 251. An air inlet 516 for introducing air into the suction chamber 515 is provided in a wall of the suction chamber 515 on the periphery of the nozzle 56, and the air inlet 516 communicates with the outside air through an air supply pipe. In some embodiments, an air pump 4 may be connected to the air supply tube to control the amount of air supplied and the amount of foam.

In the foam generating device 50 having the above configuration, when the user operates the flush switch, the control section 6 controls the first electromagnetic valve 1 to be in the open state, thereby supplying the flushing water into the flushing water chamber 23, which flows into the suction chamber 515 through the drain port 232 and the first liquid inlet 512; at the same time, the washing water with higher pressure pushes the piston assembly 20 to slide rightwards, the opening and closing member 202 leaves the partition plate 22 for a certain distance, the through hole 221 is opened, the detergent enters the detergent inlet cavity 24 from the detergent inlet 241 and then enters the detergent outlet cavity 25 through the through hole 221, and under the action of the gravity of the detergent and the compression force of the piston 201 compressing the detergent cavity rightwards, the detergent flows from the detergent outlet 251 to the second liquid inlet 513 and enters the suction cavity 515. When the flush water and the detergent are injected into the throat 514 through the nozzle 56, the flow velocity of the fluid increases, the suction chamber area around the nozzle becomes a negative pressure area, a jet effect is generated, air is sucked into the suction chamber 515 from the air inlet 516 by the jet effect, the flush water, the air, and the detergent in the suction chamber enter the mixing chamber 511 to be mixed, and the flush water, the air, and the detergent in the suction chamber are bubbled and ejected from the bubble ejection port 55 to the water surface of the toilet bowl through the bubble film 53 having a mesh structure, thereby forming bubbles.

In the modified design example related to the detergent supply part 2, as shown in fig. 9 and 10, the center of the partition plate 22 is provided with a through hole 221 as a through hole of the piston rod, and the periphery of the through hole 221 is provided with guide holes 222 penetrating through the partition plate 22, the guide holes 222 can be uniformly distributed around the through hole 221, so that the opening and closing member 202 fixedly connected to the sliding rod 203 opens or closes the through hole 221 and the guide holes 222 along with the axial movement of the sliding rod 203, the inner diameter of the through hole 221 can be reduced to be matched with the outer diameter of the sliding rod 203, so as to better play a role in guiding and supporting, and the fluid mainly passes through the guide holes 222 and is controlled by the opening and closing member 202 to open or close the guide holes 222. Further, an elastic member for providing the return force to the slide rod 203 may be provided in the guide hole 26, such as a cylindrical compression spring 204 having an outer diameter corresponding to the diameter of the hole and abutting against the bottom of the hole and the bottom of the slide rod 203 at both ends, or even a rubber cylinder (not shown) provided in the guide hole 26.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. A foam generating device (50) comprising a first solenoid valve (1) for supplying washing water, a detergent box (3) for supplying detergent, characterized by further comprising:

the detergent supply part (2) comprises a cylinder (21) and a partition plate (22) of an inner cavity of the cylinder, wherein the partition plate (22) is provided with a through hole (221) positioned in the center or a flow guide hole (222) surrounding the periphery of the through hole (221), the inner cavity of the cylinder is provided with a piston assembly (20) of which a piston rod penetrates through the through hole (221) and can axially move, the piston assembly (20) comprises a piston (201) and a sliding rod (203) fixedly connected with the piston (201) as the piston rod, an opening and closing piece (202) fixedly connected with the sliding rod for opening and closing the through hole (221) or the flow guide hole (222), and an elastic element (204) for providing a reset force for the sliding rod (203), and the cylinder is divided into a washing water cavity (23) and a detergent cavity by the piston (201) in a watertight manner; the detergent cavity is divided into a detergent inlet cavity (24) and a detergent outlet cavity (25) by a partition plate (22), and is communicated or separated along with the opening and closing of the through hole (221) or the flow guide hole (222) by the opening and closing piece (202); the washing water cavity (23) is provided with a water outlet (232) and a water inlet (231) connected to the first electromagnetic valve (1), the detergent inlet cavity (24) is provided with a detergent inlet (241) connected to the detergent box (3), and the detergent outlet cavity (25) is provided with a detergent outlet (251);

the foam spraying part (5) is provided with a pipe body (51), the pipe body (51) is hollow and is a mixing cavity (511), a first liquid inlet (512) and a second liquid inlet (513) are arranged on the front end face of the pipe body (51), the first liquid inlet (512) is communicated with a water outlet (232), the second liquid inlet (513) is communicated with a detergent outlet (251), a check valve (52) is arranged on the second liquid inlet (513), and washing water and detergent are sprayed out from a foam spraying port (55) arranged at the rear end of the pipe body (51) after being mixed in the mixing cavity (511).

2. The foam-generating apparatus as set forth in claim 1, wherein: and a foaming film (53) with a mesh structure and a foam spraying port cover (54) are arranged at the foam spraying port (55), and the foam spraying port cover (54) is fixedly connected with the pipe body (51) and is pressed to limit the foaming film (53).

3. Foam generating device according to claim 1 or 2, characterized in that: the hollow interior of the pipe body (51) is also provided with a suction cavity (515) and a throat part (514), the suction cavity (515), the throat part (514) and the mixing cavity (511) are sequentially communicated, a nozzle (56) coaxial with the throat part (514) is arranged in the suction cavity (515), and a suction port (516) is arranged on the side wall of the suction cavity (515) on the periphery of the nozzle (56).

4. The foam-generating apparatus as set forth in claim 3, wherein: the air suction port (516) is communicated with the outside air directly or through an air pump (4) by a conduit.

5. The utility model provides an intelligent toilet bowl, includes the urinal, washes the route, the foam route, its characterized in that: there is also a foam generating device as claimed in any one of claims 1 to 4 disposed in said foam path for outputting foam to said urinal.