EP2818598B1 - Comfort shower - Google Patents
Comfort shower Download PDFInfo
- Publication number
- EP2818598B1 EP2818598B1 EP13174038.3A EP13174038A EP2818598B1 EP 2818598 B1 EP2818598 B1 EP 2818598B1 EP 13174038 A EP13174038 A EP 13174038A EP 2818598 B1 EP2818598 B1 EP 2818598B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- catchment basin
- shower
- support area
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 109
- 238000000034 method Methods 0.000 claims description 15
- 239000013505 freshwater Substances 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 3
- 230000003134 recirculating effect Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/04—Water-basin installations specially adapted to wash-basins or baths
- E03C1/0408—Water installations especially for showers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K3/00—Baths; Douches; Appurtenances therefor
- A47K3/28—Showers or bathing douches
- A47K3/283—Fixed showers
- A47K3/286—Emergency showers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K3/00—Baths; Douches; Appurtenances therefor
- A47K3/28—Showers or bathing douches
- A47K3/40—Pans or trays
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Definitions
- the present invention relates to a method for operating a shower device for recirculating shower water, and to an assembly to be used in a shower device, that are defined by the appended claims.
- Such a method, assembly and shower device are known from DE-4124605 which assembly comprises a catchment basin for collecting water and a support area for supporting a person taking a shower, wherein the support area extends at a support area level and the catchment basin is arranged below the support area level for collecting water.
- the assembly also comprises a drain at a bottom level of the catchment basin, a water intake for taking in water from the catchment basin, which intake is arranged between the bottom level of the catchment basin and the support area level, and a pump arranged above the support area level, wherein the water intake is fluidly coupled with the pump for taking in circulating water from the catchment basin.
- the catchment basin is provided with a sensor to provide a signal starting the pump.
- a pump may alternatively be located outside of a shower stall and attached to a wall, hung or suspended from existing hardware, or otherwise integrated into a supply stem of a fresh hot water source, however in such alternative location of a pump it is unclear if and how this may function.
- the known water circulation system has a disadvantage in that it is not as efficient as desired. It is even doubtful if this known water circulation system can even compete with a standard eco shower since the entire floor acts as catchment area and therefore a considerable volume of water is buffered. This huge volume and outer surface of the mass of water undermines efficiency and causes considerable heat loss.
- performance with respect to hygiene is poor because the person taking a shower stands with his feet in the water to be circulated.
- a person taking a shower may disturb the caught water in the catchment area and therefore harm the continuity of the recycling water flow.
- the invention aims to provide a method for operating a shower device which method consumes less water and energy and still meets demands concerning hygiene and enjoys acceptance by users. Another object of the invention is to provide an alternative method for operating a shower device.
- the filling of the small catchment basin with fresh water through the pump provides the possibility of improved control of the volume of the circulating shower flow also because of the separation of the support area and the catchment basin.
- This separate catchment basin also enables improved control of the volume and facilitates isolation of the caught water.
- it ensures a better controlled start of the circulating shower flow in that the drawing in of water by the pump is improved because the supply conduit to the pump from the catchment basin is already filled with water.
- the method allows for complete drainage of the shower device once showering is finished. This avoids still water being present in the shower device which still water would undermine hygiene and requires drastic cleaning like e.g. with overheated water.
- This complete drainage of the shower device importantly includes complete drainage of the pump.
- Known systems do maintain water in the pump and even require to maintain water in the pump in view of starting a recycling flow.
- the pump is arranged above the support area level for allowing drainage of the pump.
- the pump is preferably entirely arranged above the support area level.
- the catchment basin is completely filled from a fresh water supply through the pump and the water intake until a desired showering water volume is in the catchment basin.
- the catchment basin is partly filled otherwise, like with a conventional shower head.
- the method comprises the step, after finishing showering, draining the entire shower device via the drain at the bottom level of the catchment basin for preventing any still water left behind.
- the method comprises the step refreshing the circulating shower flow with a refreshment flow at a flow rate of about half a litre per minute for controlling water temperature of the circulating shower flow and total refreshment of the circulating shower flow every 4 to 6 minutes.
- this arrangement of the water intake provides the possibility for complete drainage of the shower device, in particular a pump fluidly coupled with the water intake, once showering is finished. This avoids still water being present in the shower device which still water would undermine hygiene.
- the catchment basin being below the support area level for collecting water importantly ensures that the person standing on the support area and taking a shower needs not standing in water of the circulated water flow because a separate catchment basin is provided. Standing in own water to be circulated is found to be perceived as unhygienic and found to be a barrier for enjoying a circulated shower flow. Furthermore the separate catchment basin ensures that a person standing on the support area can move or walk while taking a shower without disturbing water intake to the pump which would undermine continuity of the circulating shower flow.
- the support area extends at an angle with respect to the horizontal for dewatering in the catchment basin. This promotes a prompt dewatering of water towards the catchment basin which enables to have a small volume catchment basin and facilitates maintaining water temperature of the circulating shower flow.
- the catchment basin and support area are mutually arranged such that water caught in the catchment basin is visible from point of view of a person supported by the support area for taking a shower. This reassures the person taking a shower in that he or she receives direct visual feedback concerning the freshness of the circulating shower flow and cleanliness of the catchment basin.
- the assembly comprises an overflow outlet for determining a basin water level and which overflow outlet is therefore aligned with the support area. This even more assures a separation of the support area and the catchment basin.
- the catchment basin is isolated to prevent loss of heat. This promotes efficiency even more. This isolation is facilitated by the catchment basin having a relatively low volume. Preferably the support area is isolated as well to promote efficiency even more.
- a shower device 1 according to the invention is shown as well as an assembly 2 of a support area 14 and a catchment basin 10.
- the invention will now be described referring to the embodiments in fig. 1 and 2 referring to all figures.
- the first embodiment shown in fig. 1 is a shower device 1 which is shown in a schematic way.
- the shower device 1 comprises a support area 14 at a support area level for supporting a person 30 taking a shower.
- the support area extends at an angle ⁇ with respect to the horizontal for dewatering in the catchment basin 10.
- the support area 14 is suitable for supporting a person taking a shower.
- Both the support area 14 and the catchment basin 10 are isolated by an isolation layer 32 to prevent heat losses.
- the shower device 1 comprises a catchment basin 10.
- the catchment basin 10 extends below the support area level for collecting water from the support area 14.
- the catchment basin 10 and support area 14 are mutually arranged such that water caught in the catchment basin 10 is visible and easy cleanable from point of view of a person supported by the support area 14 for taking a shower.
- the volume of the shown catchment basin 10 is about 1,8 litre, the catchment basin being dimensioned circa 4 cm in depth, 90 cm in length, and 5 cm in width. This small volume of the catchment basin 10 facilitates isolation of the basin by isolating material 32 known per se.
- the catchment basin 10 has an overflow outlet 11 which determines the basin water level 31. Surplus of water is drained via the overflow outlet 11 which enables to refresh the circulating shower flow at a desired rate and also aids in control of the volume of the circulating shower flow, and assures a strict separation of support area 14 and catchment basin 10.
- the overflow outlet 11 is therefore aligned with the support area 14. Surplus of water is drained via the overflow outlet 11 and the outlet pipe 18 into the sewer 19.
- the shower device 1 comprises a drain 12 at a bottom level of the catchment basin 10.
- the drain 12 may be a conventional type of drain which can be manually closed off, however it is conceivable for the drain 12 to be equipped with a valve (not shown) which can be closed automatically once the circulating shower flow starts.
- the drain 12 debouches in a sewer 19.
- the shower device 1 comprises a pump 7 for pumping a circulating shower flow.
- the pump 7 has a pump housing 8.
- the pump 7 is arranged entirely above the support area level.
- the pump 7 is arranged above the drain 12 such that the pump 7 may drain completely.
- arranged “entirely above” here means that the pump 7 is able to completely drain in the catchment basin 10.
- the shower device 1 comprises a water intake 13 which is fluidly coupled with the pump 7 for circulating the circulating shower flow between the catchment basin 10 and the shower head 3.
- the intake 13 is arranged with respect to the catchment basin 10 such that is takes in water between the bottom level 34 of the catchment basin 10 and the support area level 35.
- the water intake 13 here is arranged a few millimetres from the bottom of the catchment basin 10.
- the water intake opening 36 of the water intake 13 faces downwards towards the bottom of the catchment basin 10 for taking in water in a substantial vertical upward direction.
- the shower device comprises a course filter (not shown and not claimed) arranged at the water intake 13 for preventing ingress of dirt towards the pump 7.
- the course filter comprises a replaceable filter element (not shown) which is easily replaceable by a person 30 (partly shown) taking a shower.
- the shower device comprises a thermostatic mixer tab 4 with a control means 6 for manually setting the temperature and volume of the circulating shower flow.
- the thermostatic mixer tab 4 is coupled with a fresh hot water supply 9 via a hot water input of the thermostatic mixer tab 4.
- the thermostatic mixer tab 4 is coupled with the pump for taking in a circulating shower flow at the cold water input of the thermostatic mixer tab 4.
- a course pump filter 22 is arranged upstream with respect to the thermostatic mixer tab 4 for filtering the circulating flow before entering the mixer tab 4.
- the mixer tab 4 is accommodated in a mixer tab housing 5.
- the shower device 1 comprises a relief valve (not shown and not claimed) for allowing the entire shower device 1 to drain at the bottom level of the catchment basin 10 for preventing any still water left behind in the shower device 1. Therefore any check valve normally present in the mixer tab 4 has been removed for allowing the shower device 1 to drain such that circulated water is not present anymore in the shower device 1.
- the thermostatic mixer tab 4 is modified in that the not-return valve, also check valve, is removed such that the shower system 1 is able to drain entirely.
- the draining of the shower device 1 beneficially cleans the not claimed course pump filter 22 and the pump 7.
- the course pump filter 22 and the pump 7 may also be actively washed with water directly from the fresh water supply 9 without a circulating shower flow being present.
- the course pump filter 22 and the pump 7 may drain via the catchment basin 10 and the drain 12.
- the course pump filter 22 and the pump 7 may drain may drain via respective pipes 15, 16 to the sewer 19.
- the shower device 1 comprises a controllable valve (not shown and not claimed) arranged for closing the drain 12 at the bottom level of the catchment basin 10.
- the controllable valve is operationally coupled with the pump 7 for closing the valve in connection with activating of the pump 7.
- the catchment basin 10 is filled from a fresh water supply 9 through the pump 7 and the water intake 13 until a desired showering water volume is in the catchment basin 10.
- the pump 7 is idle.
- the pump 7 is activated and water is taken in at the water intake 13.
- the taken in water is pumped towards the shower head 3 for circulating a circulating shower flow between the catchment basin 10 and the shower head 3 which dispenses at the support area 14.
- water from the entire shower device 1 is drained via the drain 12 at the bottom level of the catchment basin 10 for preventing any still water left behind.
- the shower device according to the invention consumes up to between 50% and 90% less water and energy compared with known circulating shower systems.
- the second embodiment shown in fig. 2 is a shower device 1 which is shown in a schematic way.
- the shower device 1 comprises here a not claimed conventional shower system 17.
- the conventional shower system 17 is separate from the recycling shower system.
- the person may use a conventional shower system 17 for soaping and rinsing and a recycling shower system for enjoying a comfort shower.
- a comfort shower is regarded here as a shower which is not necessarily from hygienic point of view.
- the recycling shower system according to the invention only uses 10% of water and 10% of energy compared with the conventional shower system 17 while offering 10 times more water/minute.
- the conventional shower system 17 uses a thermostatic mixer tab 23 well known per se.
- the mixer tab 23 is coupled with a hot 25 and cold 24 fresh water supply.
- the initial filling of the catchment basin 10 is done by reversing the mixed flow from the mixer tab 23 towards the pump 7 which is then still idle.
- the circulating shower flow passes a thermostatic safety valve 21 which valve provides safety in that water above a set temperature may not contact the person taking a shower.
- the circulating shower flow passes a not claimed uv-filter device 28 for filtering the circulating shower flow.
- Additional safety may be provided by a safety valve 26, like a electromagnetic valve, which valve prevents leakage of so called grey water to fresh water.
- the shower device 1 comprises a water intake 13 which is fluidly coupled with the pump 7 via water intake pipe 20 for circulating the circulating shower flow between the catchment basin 10 and the shower head 3.
- the water intake 13 here is arranged a few millimetres from the bottom of the catchment basin 10.
- the water intake opening faces downwards towards the bottom of the catchment basin 10 for taking in water in a substantial vertical upward direction. This is also shown in fig. 4 .
- the low water intake 13 guarantees complete drainage of the pump 7 once comfort showering is finished, and guarantees a stable intake of water at all conditions of movement of persons on the support area 14 or even water movement in catchment basin 3.
- the shower device 1 comprises a not claimed relief valve 37 for allowing the entire shower device 1 to drain at the bottom level of the catchment basin 10 for preventing any still water left behind in the shower device 1.
- the shower device 1 comprises a not claimed controllable valve (not shown) arranged for closing the drain 12 at the bottom level of the catchment basin 10.
- the controllable valve is operationally coupled with the pump 7 for closing the valve in connection with activating of the pump 7.
- the catchment basin 10 is filled from a fresh water supply 9 through the pump 7 and the water intake 13 until a desired showering water volume is in the catchment basin 10.
- the pump 7 is activated and water is taken in at the water intake 13.
- the taken in water is pumped towards the shower head 3 for circulating a circulating shower flow between the catchment basin 10 and the shower head 3 which dispenses at the support area 14.
- water from the entire shower device 1 is drained via the drain 12 at the bottom level of the catchment basin 10 for preventing any still water left behind.
- Fig. 5 and 6 graphs of estimated savings of the shower device 1 according to the invention.
- the total saving is shown versus years.
- the saving is the difference between the cost of a shower device according to the invention (thin line) and the cost of a commonly used shower (bold line).
- Fig. 5 shows the saving for a 4 person household using a walk in shower consuming 10 litres per minute with an average shower duration of 10 minutes.
- Fig. 6 shows the saving for a 4 person household using a shower with a shower curtain, the shower consuming 12 litres per minute with an average shower duration of 12,5 minutes.
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Bathtubs, Showers, And Their Attachments (AREA)
Description
- The present invention relates to a method for operating a shower device for recirculating shower water, and to an assembly to be used in a shower device, that are defined by the appended claims.
- Such a method, assembly and shower device are known from
DE-4124605 which assembly comprises a catchment basin for collecting water and a support area for supporting a person taking a shower, wherein the support area extends at a support area level and the catchment basin is arranged below the support area level for collecting water. The assembly also comprises a drain at a bottom level of the catchment basin, a water intake for taking in water from the catchment basin, which intake is arranged between the bottom level of the catchment basin and the support area level, and a pump arranged above the support area level, wherein the water intake is fluidly coupled with the pump for taking in circulating water from the catchment basin. At the start of the circulation fresh shower water collected in the catchment basin is supplied through the water intake to the pump. The catchment basin is provided with a sensor to provide a signal starting the pump. - Further, a pump may alternatively be located outside of a shower stall and attached to a wall, hung or suspended from existing hardware, or otherwise integrated into a supply stem of a fresh hot water source, however in such alternative location of a pump it is unclear if and how this may function. The known water circulation system has a disadvantage in that it is not as efficient as desired. It is even doubtful if this known water circulation system can even compete with a standard eco shower since the entire floor acts as catchment area and therefore a considerable volume of water is buffered. This huge volume and outer surface of the mass of water undermines efficiency and causes considerable heat loss. In addition, as a consequence performance with respect to hygiene is poor because the person taking a shower stands with his feet in the water to be circulated. Moreover, a person taking a shower may disturb the caught water in the catchment area and therefore harm the continuity of the recycling water flow.
- The invention aims to provide a method for operating a shower device which method consumes less water and energy and still meets demands concerning hygiene and enjoys acceptance by users. Another object of the invention is to provide an alternative method for operating a shower device.
- Thereto the method and assembly according to the invention have the features of
claims - The filling of the small catchment basin with fresh water through the pump provides the possibility of improved control of the volume of the circulating shower flow also because of the separation of the support area and the catchment basin. This separate catchment basin also enables improved control of the volume and facilitates isolation of the caught water. In addition, it ensures a better controlled start of the circulating shower flow in that the drawing in of water by the pump is improved because the supply conduit to the pump from the catchment basin is already filled with water. In addition, the method allows for complete drainage of the shower device once showering is finished. This avoids still water being present in the shower device which still water would undermine hygiene and requires drastic cleaning like e.g. with overheated water. This complete drainage of the shower device importantly includes complete drainage of the pump. Known systems do maintain water in the pump and even require to maintain water in the pump in view of starting a recycling flow.
- The pump is arranged above the support area level for allowing drainage of the pump. The pump is preferably entirely arranged above the support area level.
- Preferably, the catchment basin is completely filled from a fresh water supply through the pump and the water intake until a desired showering water volume is in the catchment basin. However, it is conceivable that the catchment basin is partly filled otherwise, like with a conventional shower head.
- In an embodiment of the invention, the method comprises the step, after finishing showering, draining the entire shower device via the drain at the bottom level of the catchment basin for preventing any still water left behind.
- In an embodiment of the invention, the method comprises the step refreshing the circulating shower flow with a refreshment flow at a flow rate of about half a litre per minute for controlling water temperature of the circulating shower flow and total refreshment of the circulating shower flow every 4 to 6 minutes.
- In the assembly according to the invention this arrangement of the water intake provides the possibility for complete drainage of the shower device, in particular a pump fluidly coupled with the water intake, once showering is finished. This avoids still water being present in the shower device which still water would undermine hygiene.
- The catchment basin being below the support area level for collecting water importantly ensures that the person standing on the support area and taking a shower needs not standing in water of the circulated water flow because a separate catchment basin is provided. Standing in own water to be circulated is found to be perceived as unhygienic and found to be a barrier for enjoying a circulated shower flow. Furthermore the separate catchment basin ensures that a person standing on the support area can move or walk while taking a shower without disturbing water intake to the pump which would undermine continuity of the circulating shower flow.
- In an embodiment of the assembly, the support area extends at an angle with respect to the horizontal for dewatering in the catchment basin. This promotes a prompt dewatering of water towards the catchment basin which enables to have a small volume catchment basin and facilitates maintaining water temperature of the circulating shower flow.
- In an embodiment of the assembly, the catchment basin and support area are mutually arranged such that water caught in the catchment basin is visible from point of view of a person supported by the support area for taking a shower. This reassures the person taking a shower in that he or she receives direct visual feedback concerning the freshness of the circulating shower flow and cleanliness of the catchment basin.
- In an embodiment, the assembly comprises an overflow outlet for determining a basin water level and which overflow outlet is therefore aligned with the support area. This even more assures a separation of the support area and the catchment basin.
- In an embodiment of the assembly, the catchment basin is isolated to prevent loss of heat. This promotes efficiency even more. This isolation is facilitated by the catchment basin having a relatively low volume. Preferably the support area is isolated as well to promote efficiency even more.
- The invention will be further elucidated referring to a (first) preferred embodiment shown in the drawing wherein shown in:
-
Fig. 1 a schematic side view of a shower device according to the invention; -
fig.2 a schematic perspective view of not claimed further embodiment of a shower device, -
fig. 3 a perspective view of an assembly of a support area and a catchment basin of the shower device; -
fig. 4 schematic side view of an assembly of a support area and a catchment basin of the shower device; and -
fig. 5 and 6 graphs of estimated savings of the shower device according to the invention. - In the figures a
shower device 1 according to the invention is shown as well as anassembly 2 of asupport area 14 and acatchment basin 10. The invention will now be described referring to the embodiments infig. 1 and2 referring to all figures. - The first embodiment shown in
fig. 1 is ashower device 1 which is shown in a schematic way. Theshower device 1 comprises asupport area 14 at a support area level for supporting aperson 30 taking a shower. The support area extends at an angle α with respect to the horizontal for dewatering in thecatchment basin 10. Thesupport area 14 is suitable for supporting a person taking a shower. Both thesupport area 14 and thecatchment basin 10 are isolated by anisolation layer 32 to prevent heat losses. - The
shower device 1 comprises acatchment basin 10. Thecatchment basin 10 extends below the support area level for collecting water from thesupport area 14. Thecatchment basin 10 andsupport area 14 are mutually arranged such that water caught in thecatchment basin 10 is visible and easy cleanable from point of view of a person supported by thesupport area 14 for taking a shower. Here, the volume of the showncatchment basin 10 is about 1,8 litre, the catchment basin being dimensioned circa 4 cm in depth, 90 cm in length, and 5 cm in width. This small volume of thecatchment basin 10 facilitates isolation of the basin by isolatingmaterial 32 known per se. - The
catchment basin 10 has anoverflow outlet 11 which determines thebasin water level 31. Surplus of water is drained via theoverflow outlet 11 which enables to refresh the circulating shower flow at a desired rate and also aids in control of the volume of the circulating shower flow, and assures a strict separation ofsupport area 14 andcatchment basin 10. Theoverflow outlet 11 is therefore aligned with thesupport area 14. Surplus of water is drained via theoverflow outlet 11 and theoutlet pipe 18 into thesewer 19. - The
shower device 1 comprises adrain 12 at a bottom level of thecatchment basin 10. Thedrain 12 may be a conventional type of drain which can be manually closed off, however it is conceivable for thedrain 12 to be equipped with a valve (not shown) which can be closed automatically once the circulating shower flow starts. Thedrain 12 debouches in asewer 19. - The
shower device 1 comprises apump 7 for pumping a circulating shower flow. Here, thepump 7 has apump housing 8. In this case, thepump 7 is arranged entirely above the support area level. Important is that thepump 7 is arranged above thedrain 12 such that thepump 7 may drain completely. Thus, arranged "entirely above" here means that thepump 7 is able to completely drain in thecatchment basin 10. - The
shower device 1 comprises awater intake 13 which is fluidly coupled with thepump 7 for circulating the circulating shower flow between thecatchment basin 10 and theshower head 3. Theintake 13 is arranged with respect to thecatchment basin 10 such that is takes in water between thebottom level 34 of thecatchment basin 10 and thesupport area level 35. Thewater intake 13 here is arranged a few millimetres from the bottom of thecatchment basin 10. Thewater intake opening 36 of thewater intake 13 faces downwards towards the bottom of thecatchment basin 10 for taking in water in a substantial vertical upward direction. - The shower device comprises a course filter (not shown and not claimed) arranged at the
water intake 13 for preventing ingress of dirt towards thepump 7. In particular the course filter comprises a replaceable filter element (not shown) which is easily replaceable by a person 30 (partly shown) taking a shower. - The shower device comprises a
thermostatic mixer tab 4 with a control means 6 for manually setting the temperature and volume of the circulating shower flow. Thethermostatic mixer tab 4 is coupled with a freshhot water supply 9 via a hot water input of thethermostatic mixer tab 4. Thethermostatic mixer tab 4 is coupled with the pump for taking in a circulating shower flow at the cold water input of thethermostatic mixer tab 4. Between thepump 7 and thethermostatic mixer tab 4, acourse pump filter 22 is arranged upstream with respect to thethermostatic mixer tab 4 for filtering the circulating flow before entering themixer tab 4. Themixer tab 4 is accommodated in amixer tab housing 5. - The
shower device 1 comprises a relief valve (not shown and not claimed) for allowing theentire shower device 1 to drain at the bottom level of thecatchment basin 10 for preventing any still water left behind in theshower device 1. Therefore any check valve normally present in themixer tab 4 has been removed for allowing theshower device 1 to drain such that circulated water is not present anymore in theshower device 1. Thus, thethermostatic mixer tab 4 is modified in that the not-return valve, also check valve, is removed such that theshower system 1 is able to drain entirely. - The draining of the
shower device 1 beneficially cleans the not claimedcourse pump filter 22 and thepump 7. Thecourse pump filter 22 and thepump 7 may also be actively washed with water directly from thefresh water supply 9 without a circulating shower flow being present. When actively washed, thecourse pump filter 22 and thepump 7 may drain via thecatchment basin 10 and thedrain 12. However as shown as an option thecourse pump filter 22 and thepump 7 may drain may drain viarespective pipes sewer 19. - The
shower device 1 comprises a controllable valve (not shown and not claimed) arranged for closing thedrain 12 at the bottom level of thecatchment basin 10. The controllable valve is operationally coupled with thepump 7 for closing the valve in connection with activating of thepump 7. - During use of the
shower device 1 the following steps are taken. Initially, thecatchment basin 10 is filled from afresh water supply 9 through thepump 7 and thewater intake 13 until a desired showering water volume is in thecatchment basin 10. During filling of thecatchment basin 10, thepump 7 is idle. Subsequently thepump 7 is activated and water is taken in at thewater intake 13. Then, the taken in water is pumped towards theshower head 3 for circulating a circulating shower flow between thecatchment basin 10 and theshower head 3 which dispenses at thesupport area 14. Finally, after finishing showering, water from theentire shower device 1 is drained via thedrain 12 at the bottom level of thecatchment basin 10 for preventing any still water left behind. During use it is experienced that the shower device according to the invention consumes up to between 50% and 90% less water and energy compared with known circulating shower systems. - The second embodiment shown in
fig. 2 is ashower device 1 which is shown in a schematic way. In general only differences compared with the first embodiment are elucidated. Theshower device 1 comprises here a not claimedconventional shower system 17. Theconventional shower system 17 is separate from the recycling shower system. The person may use aconventional shower system 17 for soaping and rinsing and a recycling shower system for enjoying a comfort shower. A comfort shower is regarded here as a shower which is not necessarily from hygienic point of view. In practice it has been experienced that the recycling shower system according to the invention only uses 10% of water and 10% of energy compared with theconventional shower system 17 while offering 10 times more water/minute. - The
conventional shower system 17 uses athermostatic mixer tab 23 well known per se. Themixer tab 23 is coupled with a hot 25 and cold 24 fresh water supply. Here, the initial filling of thecatchment basin 10 is done by reversing the mixed flow from themixer tab 23 towards thepump 7 which is then still idle. - Here, the circulating shower flow passes a
thermostatic safety valve 21 which valve provides safety in that water above a set temperature may not contact the person taking a shower. - In this case, the circulating shower flow passes a not claimed uv-
filter device 28 for filtering the circulating shower flow. - Additional safety may be provided by a
safety valve 26, like a electromagnetic valve, which valve prevents leakage of so called grey water to fresh water. - The
shower device 1 comprises awater intake 13 which is fluidly coupled with thepump 7 viawater intake pipe 20 for circulating the circulating shower flow between thecatchment basin 10 and theshower head 3. Thewater intake 13 here is arranged a few millimetres from the bottom of thecatchment basin 10. The water intake opening faces downwards towards the bottom of thecatchment basin 10 for taking in water in a substantial vertical upward direction. This is also shown infig. 4 . Thelow water intake 13 guarantees complete drainage of thepump 7 once comfort showering is finished, and guarantees a stable intake of water at all conditions of movement of persons on thesupport area 14 or even water movement incatchment basin 3. - The
shower device 1 comprises a not claimedrelief valve 37 for allowing theentire shower device 1 to drain at the bottom level of thecatchment basin 10 for preventing any still water left behind in theshower device 1. - The
shower device 1 comprises a not claimed controllable valve (not shown) arranged for closing thedrain 12 at the bottom level of thecatchment basin 10. The controllable valve is operationally coupled with thepump 7 for closing the valve in connection with activating of thepump 7. - During use of the
shower device 1 the following steps are taken. Initially, thecatchment basin 10 is filled from afresh water supply 9 through thepump 7 and thewater intake 13 until a desired showering water volume is in thecatchment basin 10. Subsequently thepump 7 is activated and water is taken in at thewater intake 13. Then, the taken in water is pumped towards theshower head 3 for circulating a circulating shower flow between thecatchment basin 10 and theshower head 3 which dispenses at thesupport area 14. Finally, after finishing showering, water from theentire shower device 1 is drained via thedrain 12 at the bottom level of thecatchment basin 10 for preventing any still water left behind. -
Fig. 5 and 6 graphs of estimated savings of theshower device 1 according to the invention. The total saving is shown versus years. The saving is the difference between the cost of a shower device according to the invention (thin line) and the cost of a commonly used shower (bold line).Fig. 5 shows the saving for a 4 person household using a walk in shower consuming 10 litres per minute with an average shower duration of 10 minutes.Fig. 6 shows the saving for a 4 person household using a shower with a shower curtain, the shower consuming 12 litres per minute with an average shower duration of 12,5 minutes.
Claims (11)
- Method for operating a shower device (1) for recirculating shower water, the shower device (1) comprising;- a support area (14) at a support area level (35) for supporting a person taking a shower,- a catchment basin (10) below the support area level (31) for collecting water,- a drain (12) at a bottom level of the catchment basin (10),- a pump (7) arranged above the support area level (35),- a water intake (13) fluidly coupled with the pump (7) and arranged for taking in water between the bottom level of the catchment basin (10) and the support area level (35), and wherein,the method comprises the step of:- activating the pump (7) and taking in water at the water intake (13) for circulating a circulating shower flow between the catchment basin (10) and a shower head (3) which dispenses at the support area (14).the method being characterised by the step of:- initial filling of the catchment basin (10) from a fresh hot water supply (9) through the pump (7), and the water intake (13) until a desired showering water volume is in the catchment basin (10).
- Method according to claim 1, comprising the step, after finishing showering, draining the entire shower device (1) via the drain (12) at the bottom level of the catchment basin (10) for preventing any still water left behind.
- Method according to claim 1, comprising refreshing the circulating shower flow with a refreshment flow at a flow rate of about half a litre per minute for controlling water temperature of the circulating shower flow and total refreshment of the circulating shower flow every 4 to 6 minutes.
- Assembly (2) of a catchment basin (10) for collecting water and a support area (14) for supporting a person taking a shower, wherein the support area (14) extends at a support area level (35) and the catchment basin (10) is arranged below the support area level (35) for collecting water, the assembly (2) comprising;- a drain (12) at a bottom level of the catchment basin (10),- a water intake (13) for taking in water from the catchment basin (10), which intake (13) is arranged between the bottom level of the catchment basin (10) and the support area level (35), and- a pump (7) arranged above the support area level (35), wherein the water intake (13) is fluidly coupled with the pump (7) for taking in circulating water from the catchment basin (10),characterised in that the catchment basin (10):is arranged for initially being filled with fresh water supplied through the pump (7) and the water intake (13) until a desired showering water volume is reached in the catchment basin (10).
- Assembly (2) according to claim 4, wherein the support area (14) extends at an angle (α) with respect to the horizontal for dewatering of the catchment basin (10).
- Assembly (2) according to a preceding claim 4-5, wherein the catchment basin (10) and support area (14) are mutually arranged such that water caught in the catchment basin (10) is visible from point of view of a person supported by the support area (14) for taking a shower.
- Assembly (2) according to a preceding claim 4-6, comprising an overflow outlet (11) for determining a basin water level (31) and which overflow outlet (11) is therefore aligned with the support area (14).
- Assembly (2) according to a preceding claim 4-7, wherein the catchment basin (10) is isolated by means of an isolation layer (32) to prevent loss of heat.
- Assembly (2) according to a preceding claim 4-8, wherein the volume of the catchment basin (10) is between 2 to 5 litre.
- Assembly (2) according to claim 9, wherein the volume of the catchment basin (10) is about 3 litre.
- Shower device (1) for use in the method according to a preceding claim 1-3, the shower device comprising an assembly according to any one of the claims 4-10.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13174038.3A EP2818598B1 (en) | 2013-06-27 | 2013-06-27 | Comfort shower |
ES13174038.3T ES2592553T3 (en) | 2013-06-27 | 2013-06-27 | Comfort shower |
DK13174038.3T DK2818598T3 (en) | 2013-06-27 | 2013-06-27 | comfort Shower |
US14/900,839 US20160153180A1 (en) | 2013-06-27 | 2014-05-30 | Comfort shower |
PCT/EP2014/061249 WO2014206685A1 (en) | 2013-06-27 | 2014-05-30 | Comfort shower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13174038.3A EP2818598B1 (en) | 2013-06-27 | 2013-06-27 | Comfort shower |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2818598A1 EP2818598A1 (en) | 2014-12-31 |
EP2818598B1 true EP2818598B1 (en) | 2016-07-27 |
Family
ID=48700373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13174038.3A Active EP2818598B1 (en) | 2013-06-27 | 2013-06-27 | Comfort shower |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160153180A1 (en) |
EP (1) | EP2818598B1 (en) |
DK (1) | DK2818598T3 (en) |
ES (1) | ES2592553T3 (en) |
WO (1) | WO2014206685A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2016021B1 (en) * | 2015-12-23 | 2017-07-05 | Hamwells Holding B V | Shower. |
NL2016017B1 (en) * | 2015-12-23 | 2017-07-03 | Hamwells Holding B V | Shower. |
RS59318B1 (en) * | 2016-04-21 | 2019-10-31 | LALOSEVIC Milan | Closed sanitary water system |
NL2017503B1 (en) | 2016-09-21 | 2018-03-29 | Hamwells Holding B V | Shower |
NL2017516B1 (en) | 2016-09-22 | 2018-03-29 | Hamwells Holding Bv | Recirculation shower system |
JP2020507446A (en) * | 2016-11-25 | 2020-03-12 | オービタル、システムズ、アクチボラグOrbital Systems Ab | Method and apparatus for recycling water |
WO2018097788A1 (en) * | 2016-11-25 | 2018-05-31 | Orbital Systems Ab | A drain for a water recycling device |
EP3619368B1 (en) | 2017-05-03 | 2023-07-05 | FLOW-LOOP ApS | Drain valve device for a drain of a shower floor and method for controlling a water level of such shower floor |
DE102017118372A1 (en) * | 2017-08-11 | 2019-02-14 | Grohe Ag | Shower with improved warm-up behavior, a method that uses them and their use |
EP4175521A4 (en) * | 2020-07-01 | 2024-07-31 | Kohler Mira Ltd | Recirculating shower system |
DE102021108030A1 (en) | 2021-03-30 | 2022-10-06 | Grohe Ag | Device for a sanitary facility and sanitary facility |
FR3140385A1 (en) * | 2022-09-30 | 2024-04-05 | Ilya | Cyclic shower with two independent heated circuits |
DE102022127265A1 (en) * | 2022-10-18 | 2024-04-18 | Grohe Ag | Procedure for cleaning a recycling shower |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4124605A1 (en) * | 1991-07-25 | 1993-01-28 | Manfred Schneider | Portable hygiene installation with shower - has system circulating used water selectively replaced by clean water, without interrupting showering |
SE469413B (en) * | 1991-11-22 | 1993-07-05 | Electrolux Ab | ENERGY AND WATER SAVING SHOWER |
US5353448A (en) | 1992-06-30 | 1994-10-11 | Lee Gary M | Water recycling system using spent recycled water with fresh water |
DE29813626U1 (en) * | 1998-07-30 | 1998-10-22 | Saalmann GmbH, 32049 Herford | Medical shower device |
-
2013
- 2013-06-27 DK DK13174038.3T patent/DK2818598T3/en active
- 2013-06-27 EP EP13174038.3A patent/EP2818598B1/en active Active
- 2013-06-27 ES ES13174038.3T patent/ES2592553T3/en active Active
-
2014
- 2014-05-30 WO PCT/EP2014/061249 patent/WO2014206685A1/en active Application Filing
- 2014-05-30 US US14/900,839 patent/US20160153180A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2014206685A1 (en) | 2014-12-31 |
DK2818598T3 (en) | 2016-09-26 |
US20160153180A1 (en) | 2016-06-02 |
ES2592553T3 (en) | 2016-11-30 |
EP2818598A1 (en) | 2014-12-31 |
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