BATHING DEVICE AND METHOD THEREOF

Information

  • Patent Application
  • 20220047127
  • Publication Number
    20220047127
  • Date Filed
    August 17, 2020
    3 years ago
  • Date Published
    February 17, 2022
    2 years ago
Abstract
A bathing device for washing people's body has a cleaning head comprising a suction housing, a liquid injection assembly inside said suction housing, and a control valve assembly, together with associated accessories. The control valve assembly comprises a valve and an electrical switch, allowing an operator to close said control valve to start spraying cleaning fluid onto person's body and removing said fluid with vacuum, and to open said control valve in said control valve assembly to discontinue spraying cleaning fluid onto person's body and releasing vacuum in said suction housing to facilitate free move of said cleaning head. The bathing device can clean person's body like taking a bath or shower without spilling water to adjacent area and the need for the person taking off clothes, and further at any place of person's convenience or choice.
Description
FIELD OF THE INVENTION

This invention relates generally to a bathing device, and more specifically, this invention relates to a hand-held bathing device that can clean human's body like taking a bath or shower without spilling water to adjacent area and the need for the person taking off clothes.


BACKGROUND OF THE INVENTION

Human's body can have sweat, grease and dead skin cell over the time. People usually need to wash their body with water and sometimes together with soap to clean out the sweat, grease and dead skin cell, that is taking a bath or shower. Rinsing body with water with proper temperature also helps person to remove body heat or warm up body with proper temperature of the cleaning water. This process involves spilling lots of used water to adjacent area. Therefore, person taking a bath or shower usually needs to take off clothes and stay in an area with proper containment of spilled water, such as in a tub or in a closed showering area with water drainage. However, for people with moving constrain or disability, such as elder people or patients, sometimes it is difficult to take off clothes and enter the tub or showering area by themselves or even with the help of caregivers. Moreover, the whole bathing or showering process is usually very slow for these people, therefore they could catch cold if the temperature in the environment is not properly controlled. In addition, in circumstances where taking off clothes is inconvenient, such as person's privacy, taking a bath or shower becomes problematic.


Currently in prior arts, there is no such bathing device to help people washing their body without the requirement to take off their clothes and the requirement to go to a water contained area.


OBJECTS AND SUMMARY OF THE INVENTION

The principal object of the invention is to provide a hand-held bathing device that can clean person's body like taking a bath or shower without spilling water to adjacent area and the need for the person taking off clothes.


Another object of the invention is to provide a hand-held bathing device that can clean person's body like taking a bath or shower at any place of person's convenience or choice.


Another object of the invention is to provide a hand-held bathing device that can clean person's body like taking a bath or shower without the need to slide or rub the cleaning head on person's skin that could cause harm to person's skin and with the cleaning head being moved freely on person's body for bathing.


Another object of the invention is to provide a hand-held bathing device that can clean person's body like taking a bath or shower with clean fluid at a proper temperature for the comfort of the person taking a bath.


These objects are achieved in accordance with the invention by means of a bathing device for washing people's body, comprising:

    • a cleaning head comprising a suction housing, a liquid injection assembly inside said suction housing, and a control valve assembly, wherein said control valve assembly controls spraying cleaning fluid onto people's body and removing said fluid with vacuum, and said control valve also controls discontinuing spraying cleaning fluid onto people's body and releasing vacuum in said suction housing to facilitate free move of said cleaning head;
    • a clean fluid reservoir;
    • a fluid pump coupled between and in fluid communication with said liquid injection assembly and said clean fluid reservoir through flexible tubings;
    • a waste fluid separator and reservoir, comprising a liquid storage chamber, an air/liquid separator, an inlet coupled to and in air and fluid communication with said cleaning head, and an outlet coupled to and in air communication with a vacuum source;
    • a vacuum pump coupled to and in air communication with said outlet of said waste fluid separator and reservoir.


In one embodiment of this invention, said suction housing is detachable on said cleaning head.


In another embodiment of this invention, said suction housing has various sizes and shapes to fit specific area and curve shape of human body.


In a preferred embodiment of this invention, the contact edge of said suction housing is made of soft and elastic material to ensure soft contact and vacuum seal with human body.


In another embodiment of this invention, said conduit coupled between cleaning head and waste fluid separator and reservoir is flexible and expandable, allowing free move during bathing process.


In another embodiment of this invention, said tubing coupled between said liquid pump and said liquid injection assembly is embedded inside said conduit coupled between said cleaning head and said waste fluid separator and reservoir.


In another embodiment of this invention, said vacuum pump, said waste fluid separator and reservoir, said clean fluid reservoir, said liquid pump are supported on a movable base with castors.


In a preferred embodiment of this invention, said waste fluid separator and reservoir and said clean fluid reservoir are detachable on said movable base with castors.


In another embodiment of this invention, said clean fluid reservoir further comprises a liquid storage chamber, a detachable cap with connector and tubings in liquid communication with said liquid pump, an electric heating element, and a temperature indicator.


In another embodiment of this invention, said bathing device further comprises a temperature control system to control the temperature of the clean fluid within a designed range with said electric heating element and said temperature indicator.


In another embodiment of this invention, said liquid storage chamber of said waste fluid separator and reservoir is detachable and is vacuum tight by a sealable cap.


In another embodiment of this invention, said waste fluid separator and reservoir further comprises a vacuum releasing valve.


In another embodiment of this invention, said bathing device further comprises electric power sources for said temperature control system, said electrical heating element, said vacuum pump and said liquid pump.


In another embodiment of this invention, said bathing device further comprises a liquid separator/filter coupled between the outlet of waste fluid separator and reservoir and the inlet of said vacuum pump to further remove liquid entering the inlet of said vacuum pump.


In another embodiment of this invention, said control valve assembly further comprises a valve and an electrical switch, said valve closes air communication of said cleaning head with atmosphere and turns on said electrical switch simultaneously, and said valve opens air communication of said cleaning head with atmosphere and turns off said electrical switch simultaneously.


Before taking a bath with said bathing device of this invention, the operator will need to ensure the temperature of the cleaning fluid is within a proper and designed temperature range.


During the process of taking a bath with said bathing device of this invention, the operator closes said control valve in said control valve assembly to start spraying cleaning fluid onto person's body and removing said fluid with vacuum, and opens said control valve in said control valve assembly to discontinue spraying cleaning fluid onto person's body and releasing vacuum in said suction housing to facilitate free move of said cleaning head.


Further objects, advantages, construction, and features of the present invention will become apparent from the following description and the appended claims, which is illustrated schematically in the accompanying drawings.





BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings illustrate various embodiments of the principles described herein and are a part of the specification. The illustrated embodiments are merely examples and do not limit the scope of the claims. The elements in figures are not necessarily to absolute or relative scale. Further, the elements illustrated may have a variety of different configurations.


The foregoing objects and novelty of the invention will be apparent from the following description and the accompanying drawings, wherein:



FIG. 1 is a schematic drawing of the bathing device illustrating the working mechanism embodying the invention, drawn not to scale and actual construction of the device.



FIG. 2 is a schematic drawing of an exploded view, partly in medial section, of a waste fluid separator and reservoir, drawn not to scale and actual construction of the device.



FIG. 3 is a schematic drawing of an exploded view, partly in medial section, of a clean fluid reservoir, drawn not to scale and actual construction of the device.



FIG. 4 is a schematic drawing of an exploded view, partly in medial section, of a cleaning head, drawn not to scale and actual construction of the device.



FIG. 5a and FIG. 5b are schematic drawings of a top view and side view of the cap connecting the tubing from said liquid pump outlet to said liquid injector nozzle and said suction housing, drawn not to scale and actual construction of the device.



FIG. 6a and FIG. 6b are schematic drawings of an operational method, partly in medial section, illustrating the operational mechanism of a control valve assembly with which the present invention may be employed, drawn not to scale and actual construction of the device.



FIG. 7 is a schematic drawing of the electrical circuit and control system with which the present invention may be employed.





DESCRIPTION OF THE PREFERRED EMBODIMENTS

Methods and systems that implement the embodiments of the various features of the invention will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate embodiments of the invention and not to limit the scope of the invention. Reference in the specification to “one embodiment' or “an embodiment' is intended to indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least an embodiment of the invention. The appearances of the phrase “in one embodiment” or “an embodiment” in various places in the specification are not necessarily all referring to the same embodiment. Throughout the drawings, reference numbers are re-used to indicate correspondence between referenced elements.


In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present systems and methods. It will be apparent, however, to one skilled in the art that the present apparatus, systems and methods may be practiced without these specific details.


The term “comprising,” which is synonymous with “including,” “containing,” or “characterized by” is inclusive or open-ended and does not exclude additional, unrecited elements or method steps. “Comprising” is a term of art used in claim language which means that the named claim elements are essential, but other claim elements may be added and still form a construct within the scope of the claim.


In brief, an illustrative form of the invention comprises an electric power and control system 3, a vacuum pump 4, a waste fluid separator and reservoir 5, a clean fluid reservoir 6, a fluid pump 7, a cleaning head 10, and associated filter, conduits, tubings, control valves, electric circuits etc. in the working mechanism to be described herein. Said cleaning head 10 comprises a suction housing 11, a liquid injection assembly embedded inside said suction housing 11, a control valve assembly 15, and associated fittings, connectors, tubings, electric circuits.


With electric power on, vacuum pump 4 creates a vacuum in the intake vacuum hose 41 and draws a vacuum in the chamber of waste fluid separator and reservoir 5. The inlet line of waste fluid separator and reservoir 5 is in fluid and air communication with cleaning head 10 through vacuum hose 42, joint T connector 9, and conduit 43. The vacuum in these conduits and connectors is the driving force for fluid suction in the cleaning head 10. A liquid pump 7 couples between clean fluid reservoir 6 and liquid injection assembly inside said cleaning head 10. The liquid pump 7 draws temperature pre-set clean fluid from clean fluid reservoir 6 and pump the clean fluid to liquid injection assembly and spray out to targeted area for cleaning through injector nozzle 12.


As compared to cleaning of normal surface such as floor, carpet, etc. using steam/vacuum cleaning device, taking a bath on people's body using the bathing device of this invention is different in that the cleaning head should not slide on human body skin as does on normal surface for cleaning. This is because human body skin is not as smooth and flat as normal surface like floor and carpet. More importantly, since certain people's skin is tender and sensitive, rubbing and sliding on people's skin during cleaning could hurt these people. For this reason, the operator of the bathing device of this invention uses the control valve assembly 15 on the cleaning head 10 to clean certain area of people's body section by section with no sliding and rubbing movement of the cleaning head 10. As will be described in detail later, when the operator closes the control valve 15, the device will turn on fluid injection and vacuum suction. In this mode, the clean fluid is sprayed on people's skin and the fluid is simultaneous removed by vacuum suction. When the operator opens the control valve 15, the device will turn off fluid injection and allow air to enter the suction housing 11. The air entering the suction housing 11 will release the vacuum inside the suction housing 11. When there is low vacuum in the suction housing 11, thereby low suction force with suction housing 11 open to air, the operator is able to move the cleaning head 10 to a different position without the need to sliding through the skin surface.


Referring to the schematic drawing in FIG. 1 for the bathing device construction, the bathing device of the present invention comprises a supportive base 2 supported by swiveled castors 21. Vacuum pump 4, liquid pump 7, and associated electric power and control system 3 are mounted and supported on the base 2. The specific type of vacuum pump 4 and liquid pump 7 employed are not material to this invention, and since several well-known types are suitable for the purpose, the details thereof are not illustrated or described herein. Said waste fluid separator and reservoir 5 and clean fluid reservoir 6 are supported on base 2. Both waste fluid separator and reservoir 5 and clean fluid reservoir 6 are detachable from base 2 to allow cleaning of the vessel and removal of the fluid insider the vessel. The cleaning head 10 is flexible and expandable through a conduit 43 for bathing operation.


The inlet or low pressure side of the vacuum pump 4 connects to the outlet of a liquid separator/filter 8 and the inlet of the liquid separator/filter 8 connects the outlet of said waste fluid separator and reservoir 5 through a flexible vacuum hose 41. The inlet of said waste fluid separator and reservoir 5 connects to one side of a joint T connector 9 through a flexible vacuum hose 42. Another side of the joint T connector 9 connects to the inlet of cleaning head 10 through a conduit 43. Yet another side of the joint T connector 9 is sealed with a cap 47, wherein the cap 47 has a union connector 48 on it. One side of the union connector 48 connects to the outlet of the fluid pump 7 through a flexible tubing 45, and the other side of the union connects to the inlet of the liquid injector assembly inside cleaning head 10 through a flexible tubing 44. The inlet of said liquid pump connects to the outlet of clean fluid reservoir 7 through a flexible tubing 46.


Referring to the schematic drawing in FIG. 2 for detailed construction of waste fluid separator and reservoir 5, the waste fluid separator and reservoir 5 comprises a waste fluid storage chamber 51 and a cap 53. The cap 53 is capped and sealed onto the chamber 51 by a pair of clamp latches 52. The cap is sealed by an O-ring 54. The O-ring can be made of elastic material, such as Viton®, Nitrile (Buna-N), Neoprene, Silicone, Ethylene Propylene Rubber (EPR), Polyurethane, etc. The cap 53 comprises an inlet union 59, an outlet union 58, and a pressure control valve union 55. The pressure control valve union 55 connects to a valve 56. An air/liquid separator 57 connects to the outlet union 58 from inside of the chamber 51. The air/liquid separator 57 is able to block most of the waste fluid inside the chamber 51 from entering the outlet vacuum hose 41. The other side of the outlet union 58 connects to vacuum hose 41 (Referring to FIG. 1). Through vacuum hose 41, vacuum pump 4 pulls a vacuum inside chamber 51. The inlet union 59 connects to joint T connector 9 through a vacuum hose 42 (Referring to FIG. 1). A tubing 50 connects to inlet union 59 from inside of the chamber 51. The tubing 50 extends at a certain distance inside the chamber 51. The vacuum pump 4 creates a vacuum and pulls a vacuum in chamber 51 through vacuum hose 41, and in turn the vacuum in chamber 51 pulls a vacuum in suction housing 11 through vacuum hose 42, joint T connector 9, and conduit 43. The air and liquid mixture can be sucked into the chamber 51, wherein the liquid will be separated in the chamber 51 and air will be pulled out through vacuum hose 41 to vacuum pump 4.


Referring to the schematic drawing in FIG. 3 for detailed construction of clean fluid reservoir 6, the clean fluid reservoir 6 comprises a clean fluid storage chamber 61, a cap 63, an electric heating element 65, a temperature indicator 66, and an air vent aperture 69. The cap 63 is capped and sealed onto the chamber 61 by a pair of clamp latches 62. The cap is sealed by an O-ring 64. The O-ring can be made of elastic material, such as Viton®, Nitrile (Buna-N), Neoprene, Silicone, Ethylene Propylene Rubber (EPR), Polyurethane, etc. A fitting union 67 is on the cap 63. A tubing 68 connects to one side of union 67 from inside of the chamber 61. The tubing 68 extends to near the bottom of the chamber 61. The other side of union 67 connects to the inlet of liquid pump 7 through a flexible tubing 46 (Referring to FIG. 1). The temperature indicator 66 and electric heating element 65 works together with a temperature control system to regulate the clean fluid within a desired temperature range set by the operator. The detailed working logics will be discussed in details in the electronic system (Referring to FIG. 7). When the clean fluid reaches the desired temperature range, the operator can turn on fluid pump 7 to draw clean fluid from chamber 61 and pump to liquid injector assembly in the cleaning head 10. If the fluid temperature is outside the desired temperature range, the temperature control system will shut down the power to the fluid pump 7 and prevent the fluid pump 7 from pumping fluid to cleaning head 10.


Referring to the schematic drawing in FIG. 4 for detailed construction of cleaning head 10, the cleaning head 10 comprises a suction housing 11, a fluid injector nozzle 12, a union plug 13, a union fitting 14, an union elbow 16, and a control valve assembly 15 attached on said union elbow 16. The fluid injection assembly comprises the fluid injector nozzle 12, union plug 13, union fitting 14, tubing 44, union 48, and cap 47. The control valve assembly 15 comprises a plug 151, an expansion spring 152, an electric circuit switch 154. The plug 151 is sealed to said union elbow 16 by an O-ring 153. The expansion spring 152 provides the force to make a seal of the plug 151 on union elbow 16. The O-ring can be made of elastic material, such as Viton®, Nitrile (Buna-N), Neoprene, Silicone, Ethylene Propylene Rubber (EPR), Polyurethane, etc. One side of the elbow 16 connects to joint T connector 9 through conduit 43. The other side of the elbow 16 connects to suction housing 11. The suction housing 11 is detachable on the connection with the elbow 16. There can be various sizes and shapes of suction housing 11 to suit for cleaning of appropriate position of person's body. The edge 17 of suction housing 11 is made of soft and flexible materials, such as silicone, fabrics, etc. The union plug 13 is plugged into the elbow 16 on the same connection side of the suction housing 11 with the union fitting 14. One side of the union fitting 14 connects to the outlet from fluid pump through a flexible tubing 44 (Referring to FIG. 1). The other side of the union fitting 14 connects to fluid injector nozzle 12.


As illustrated in FIG. 5a and FIG. 5b, the union plug 13 anchors the union fitting 14 and thereon liquid injector nozzle 12 with supported ring 132, and supported ring 132 is further anchored by supporting arms 133 that are supported on the rim 131 of plug 13. In this structure, the open area in union plug 13 still allows air and fluid communication between suction housing 11 and elbow 16 and thereon.



FIG. 6a and FIG. 6b illustrate the working mechanism of the control valve assembly 15 and bathing devices operation thereon. When the bathing device is ready for operation with electric power turned on, vacuum pump in operation, clean fluid at designed temperature range, the operator can release the control valve 15, and expansion spring 152 will expand and push plug 151 up and cause the circuit switch 154 to close and this will start liquid pump 7 to draw clean fluid from clean fluid reservoir 6 and spray out through injector nozzle 12 onto person's body. In the meantime, with control valve 15 closed, the vacuum from conduit 43 will start to pull both air and fluid inside suction housing 11 into waste fluid separator and reservoir 5. When cleaning of the area of the body is finished, operator can push control valve 15 to cause the circuit switch 154 to open and this will turn off the liquid pump 7. In the meantime, with control valve 15 open, the air will leak into suction housing 11 and this will decrease the vacuum inside the suction housing 11. With less vacuum inside the suction housing 11, operator can easily lift the cleaning head 10 and move to another area for cleaning.


Referring to FIG. 7a and FIG. 7b for electric system for the bathing device, the bathing device comprises an electric power source 31, vacuum pump 4, electric heating element 65, and temperature indicator 66 and temperature control system 32. The bathing device also comprises a battery power source 34 for liquid pump 7. The electric power source 31 provides electric power to temperature control system 32, electric heating element 65, and vacuum pump 7. The battery power source 34 provides electric power to liquid pump 7. The temperature indicator 66 reads clean fluid temperature and send signal to temperature control system 32. When the temperature indicator reading is within the designed temperature range, the indicator light 33 on temperature control system 32 turns into a specific color, for example, green color, indicating the clean fluid temperature is ready. In the meantime, the temperature control system 32 turns on power to vacuum pump 4. If the temperature indicator reading is lower than the designed temperature range, the indicator light 33 on temperature control system 32 turns into another specific color, for example, yellow color, and temperature control system 32 turns on power to the electric heating element 65 to heat up the clean fluid in the chamber 61. When the clean fluid in the chamber 61 reaches the designed temperature range, the temperature control system 32 turns off power to the electric heating element 65. If the temperature indicator reading is higher than the designed temperature range, the indicator light 33 on temperature control system 32 turns into another specific color, for example, red color, this signal warns the operator that clean fluid temperature is too high. When clean fluid temperature is not ready, the temperature control system turns off power to fluid pump 7.


The operator can set a desired clean fluid temperature on temperature control system 32, the temperature control system 32 will control the electric heating element 65 to heat up the clean fluid to the designed temperature range, usually within 1-2 C of the set temperature. When the clean fluid temperature reaches the designed temperature range, the clean fluid temperature indicator light will be on a ready color, for example, green color. When the indicator light is on a ready color, temperature control system 32 will turn on electric power to vacuum pump 4 and turn on battery power to liquid pump 7. The operator can then use the control valve assembly 15 to control the bathing device and taking a bath. When the clean fluid level is below the temperature indicator, the temperature indicator will usually change to room temperature and usually is different from the set desired temperature, and the temperature indicator 66 will send a signal to the temperature control system 32, and the temperature control system 32 will turn off the electric power to vacuum pump and liquid pump. And the indicator light will also remind operator to add more clean fluid if further bathing is needed.


In another alternative operation method, the operator can choose to use manual method to control the power to vacuum pump 4 and liquid pump 7. Further the operator can choose to control the clean fluid temperature manually to a designed temperature range without the use of temperature control system and electric heating element.


There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto. In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.


As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.

Claims
  • 1. A bathing device for washing people's body, comprising: a cleaning head comprising a suction housing, a liquid injection assembly inside said suction housing, and a control valve assembly, wherein said control valve assembly controls spraying cleaning fluid onto people's body and removing said fluid with vacuum, and said control valve also controls discontinuing spraying cleaning fluid onto people's body and releasing vacuum in said suction housing to facilitate free move of said cleaning head;a clean fluid reservoir;a fluid pump coupled between and in fluid communication with said liquid injection assembly and said clean fluid reservoir through flexible tubings;a waste fluid separator and reservoir, comprising a liquid storage chamber, an air/liquid separator, an inlet coupled to and in air and fluid communication with said cleaning head, and an outlet coupled to and in air communication with a vacuum source;a vacuum pump coupled to and in air communication with said outlet of said waste fluid separator and reservoir.
  • 2. The device as claimed in claim 1, wherein said suction housing is detachable on said cleaning head.
  • 3. The device as claimed in claim 1, wherein said suction housing has various sizes and shapes to fit specific area and curve shape of human body.
  • 4. The device as claimed in claim 1, wherein the contact edge of said suction housing is made of soft and elastic material to ensure soft contact and vacuum seal with human body.
  • 5. The device as claimed in claim 1, wherein said conduit coupled between cleaning head and waste fluid separator and reservoir is flexible and expandable, allowing free move during bathing process.
  • 6. The device as claimed in claim 1, wherein said tubing coupled between said liquid pump and said liquid injection assembly is embedded inside said conduit coupled between said cleaning head and said waste fluid separator and reservoir.
  • 7. The device as claimed in claim 1, wherein said vacuum pump, said waste fluid separator and reservoir, said clean fluid reservoir, said liquid pump are supported on a movable base with castors.
  • 8. The device as claimed in claim 7, wherein said waste fluid separator and reservoir and said clean fluid reservoir are detachable on said movable base with castors.
  • 9. The device as claimed in claim 1, wherein said clean fluid reservoir further comprises a liquid storage chamber, a detachable cap with connector and tubings in liquid communication with said liquid pump, an electric heating element, and a temperature indicator.
  • 10. The device as claimed in claim 1, wherein said bathing device further comprises a temperature control system to control the temperature of the clean fluid within a designed range with said electric heating element and said temperature indicator.
  • 11. The device as claimed in claim 1, wherein said liquid storage chamber of said waste fluid separator and reservoir is detachable and is vacuum tight by a sealable cap.
  • 12. The device as claimed in claim 1, wherein said waste fluid separator and reservoir further comprises a vacuum releasing valve.
  • 13. The device as claimed in claim 1, and further comprising electric power sources for said temperature control system, said electrical heating element, said vacuum pump and said liquid pump.
  • 14. The device as claimed in claim 1, and further comprising a liquid separator/filter coupled between the outlet of waste fluid separator and reservoir and the inlet of said vacuum pump to further remove liquid entering the inlet of said vacuum pump.
  • 15. The device as claimed in claim 1, wherein said control valve assembly further comprises a valve and an electrical switch, said valve closes air communication of said cleaning head with atmosphere and turns on said electrical switch simultaneously, and said valve opens air communication of said cleaning head with atmosphere and turns off said electrical switch simultaneously.
  • 16. A method of taking a bath using a bathing device for washing people's body, comprising: a cleaning head comprising a suction housing, a liquid injection assembly inside said suction housing, and a control valve assembly, wherein said control valve assembly controls spraying cleaning fluid onto people's body and removing said fluid with vacuum, and said control valve also controls discontinuing spraying cleaning fluid onto people's body and releasing vacuum in said suction housing to facilitate free move of said cleaning head;a clean fluid reservoir;a fluid pump coupled between and in fluid communication with said liquid injection assembly and said clean fluid reservoir through flexible tubings;a waste fluid separator and reservoir, comprising a liquid storage chamber, an air/liquid separator, an inlet coupled to and in air and fluid communication with said cleaning head, and an outlet coupled to and in air communication with a vacuum source;a vacuum pump coupled to and in air communication with said outlet of said waste fluid separator and reservoir,wherein an operator closes said control valve in said control valve assembly to start spraying cleaning fluid onto person's body and removing said fluid with vacuum, and opens said control valve in said control valve assembly to discontinue spraying cleaning fluid onto person's body and releasing vacuum in said suction housing to facilitate free move of said cleaning head.