EP4256242A1 - Échangeur de chaleur pour un compartiment de vidange, et système échangeur de chaleur - Google Patents

Échangeur de chaleur pour un compartiment de vidange, et système échangeur de chaleur

Info

Publication number
EP4256242A1
EP4256242A1 EP20965238.7A EP20965238A EP4256242A1 EP 4256242 A1 EP4256242 A1 EP 4256242A1 EP 20965238 A EP20965238 A EP 20965238A EP 4256242 A1 EP4256242 A1 EP 4256242A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
water
cold
mixer
channel
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.)
Pending
Application number
EP20965238.7A
Other languages
German (de)
English (en)
Other versions
EP4256242A4 (fr
Inventor
Sture HEDELIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idehuset Gasellen I Varberg AB
Original Assignee
Idehuset Gasellen I Varberg AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Idehuset Gasellen I Varberg AB filed Critical Idehuset Gasellen I Varberg AB
Publication of EP4256242A1 publication Critical patent/EP4256242A1/fr
Publication of EP4256242A4 publication Critical patent/EP4256242A4/fr
Pending legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0472—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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
    • E03C2001/005—Installations allowing recovery of heat from waste water for warming up fresh water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/10—Movable elements, e.g. being pivotable
    • F28F2280/105—Movable elements, e.g. being pivotable with hinged connections

Definitions

  • the present invention relates to the field of heat exchangers in general and to a heat exchanger for recovering heat from wastewater, in particular.
  • Heat exchangers for placement as a floor in the shower where the inlet water, pressurized tap water (household water), is exchanged for outlet water faces problems with installation and cleaning, as well as approval in accordance with industry and construction requirements.
  • a heat exchanger is arranged in the path of the wastewater. Products that directly recover heat from the shower water have not yet hit the market in a desired manner. This may be due to difficulty to install, inefficiency or difficulty to clean, especially the heat exchanger part, drain compartment and its water trap. Many heat exchangers are difficult to maintain because of one or several of cleaning, decalcifying, or controlling functionality. Moreover, depending on the structure and construction material the efficiency can be varied.
  • the heat exchangers have a separate pressurized water circuit. This means that the heat exchangers must be designed to be stable in terms of strength in accordance with this pressure load and the intended normative usage period, which either requires relatively complex geometrical designs with low material requirements and high manufacturing costs or relatively simple constructions with low manufacturing costs.
  • the present invention solves the above-mentioned problems.
  • an efficient and robust system comprising a tap water portion and a heat exchange portion.
  • the system is exposed to a low-pressure load, which is same as the (household) pipeline pressure.
  • other objects of the invention may include providing a heat exchanger that is at least: efficient; easy to clean and maintain; easy to assemble and install; and safe to use and avoids leakage.
  • a heat exchanger for installation in a drain compartment and comprises a heat exchanger portion and a connector comprising an inlet and an outlet.
  • the heat exchanger portion and the connector are arranged rotatable around a rotation axis such that the heat exchanger portion and the connector are rotatable from a first position to a second position.
  • the inlet is configured to be connected to a cold-water feed to the heat exchanger and the outlet is configured to be connected to an inlet of a water mixer. This allows the system to be exposed to a low-pressure load.
  • the heat exchanger portion is configured such that a cold-water flow in one direction and a wastewater, to affect the cold-water temperature in an opposite direction. This allows for an efficient heat exchanger.
  • the heat exchanger comprises a channel with a feed point for the cold-water and a return point for heated water.
  • the channel is formed as a continuous spiral loop with a height difference between the feed point and the return point, were the return point is higher than the feed point.
  • the channel may be formed as inclined tubes.
  • the heat exchanger portion is made of pressed sheet of stainless steel, plated copper, aluminum, compressed copper pipes or extruded aluminum.
  • the heat exchanger portion may be made by joining upper and lower portions such that a channel system for the cold-water is shaped there between.
  • the heat exchanger is configured to be connected to a water mixer, whereby the inlet is connected to cold water of the water mixer and return outlet is connected to a hot-water inlet of the water mixer.
  • the invention also relates to a heat exchanger system to heat cold-water by means of heat from wastewater.
  • the system comprises: a heat exchanger configured to be arranged in a drain compartment; a mixer for providing cold-water from a cold-water source and receive water with altered temperature.
  • the heat exchanger comprises: a heat exchanger portion comprising: a number of channels for circulating the cold-water from the mixer; and an outer surface covering the channels for distributing the wastewater at least on one surrounding surface.
  • the heat exchanger further comprises a connector configured to receive the cold-water from the mixer and to connect to the heat exchanger portion, and return water with changed temperature to the hot water of the mixer.
  • the heat exchange portion is arranged rotatable around a rotational axis, allowing the heat exchanger portion to rotate from a first resting position to a second raised position.
  • the heat exchanger system may be used in a shower, bathtub or sink.
  • the heat exchanger portion may be configured such that a cold-water to be heated flows in one direction and wastewater in an opposite direction.
  • the heat exchanger system comprises a channel with a feed connection for the cold-water and a return connection for the heated water connected to the channel, which is formed as a continuous spiral loop with a height difference between the feet point and the return point.
  • the channel may be formed as inclined tubes.
  • the heat exchanger portion may be made of pressed sheet of stainless steel, plated copper, aluminum, compressed copper pipes or extruded aluminum.
  • the heat exchanger portion may be made by joining upper and lower portions such that a channel system for the first medium is shaped there between, according to one embodiment, the feed connection and return connection comprise one or several of quick connection, hose connection, welding, or a seal. This allows for easy installation.
  • the heat exchanger portion may comprise through channels for guiding wastewater from one surface to the opposite surface.
  • Fig. 1 is a very schematically illustrated shower area, in which an exemplary system according to the present invention is installed;
  • Fig. 2 illustrates a schematic view of a heat exchanger and floor drain, in perspective, according to one exemplary embodiment of the present invention
  • Fig. 3 illustrates a schematic cross-sectional view of the heat exchanger according to Fig. 2;
  • Fig. 4 illustrates in perspective a schematic view of the heat exchanger of Fig. 2 in an open, raised position
  • Fig. 5a illustrates a schematic embodiment of a connector of the heat exchanger from above
  • Figs. 5b and 5c illustrate schematically cross-sectional views through the connector of Fig. 5a;
  • Fig. 6a illustrates a schematic view from above of a heat exchanger portion according to one embodiment of the present invention
  • Fig. 6b illustrates schematically a cross-sectional view through the heat exchanger portion of Fig. 6a and a partial magnification
  • Fig. 7 illustrates an elevated and schematic view of a heat exchanger portion according to a second embodiment of the present invention
  • Fig. 8 illustrates an elevated and schematic view of a heat exchanger portion according to a third embodiment of the present invention
  • Fig. 9 illustrates in perspective a schematic view of another embodiment of the heat exchanger.
  • Fig. 10 illustrates a schematic cross-sectional view of a mixer according to one embodiment of the present invention.
  • the invention is not limited to showers and may, with advantage, be used in bathtubs, sinks (kitchen, utility room), or anywhere it is possible to recover heat from a flowing medium with higher temperature and transfer the heat to another medium with lower temperature, or vice versa.
  • heat exchanger may refer to a device used to transfer heat between two or more fluids, i.e. to increase or decrease temperature of at least one fluid under influence of another fluid. In some cases, other mediums may substitute fluids.
  • tap water or “household water”, as used herein may refer to running water, city water, town water, municipal water, sink water, etc. and is water supplied to a tap.
  • a system for heat exchanging which according to one example comprises a shower mixer and a heat exchanger located in the floor drain.
  • the cold-water freshwater
  • the heat exchanger for heating (increased temperature) before it is guided back and mixed to a desired temperature with the hot water.
  • the invention is not limited to water and other mediums temperature of which is intended to be altered may also be addressed.
  • the heat exchanger arranged in the floor drain compartment (floor drain, sewer, shower well, etc.), is located above the water trap (if installed) of the drain, and do not utilities (additional) pressurized water source when not in use as the mixer stops the water flow in the shut off state, which enables a simple installation of the heat exchanger and hygienic design for accessible sanitation.
  • the floor drain space with the heat exchanger may be rectangular in configuration and the cold-water is guided centrally into the heat exchanger, designed so that the water is led into small channels and then back to the mixer while the hot-water (wastewater) rinses over the channels on its way towards the drain/water trap.
  • Fig. 1 illustrates a shower area 100, comprising a floor 110, a drain 120 with a drain grate 121 (may also be a lid of the heat exchanger), a heat exchanger 200, a mixer 300, a shower 130, freshwater/cold-water pipe 140, hot-water pipe 150, feeder pipe 160, return pipe 170 and shower feed pipe 180.
  • the shower area may be limited by walls, screens, a cabin, etc. (not shown).
  • the floor 110 is inclined towards the draining area and the drain 120.
  • the water from the shower rinse over the floor to the drain or directly into the drain.
  • the shower 130 which may also comprise a deluge head and a hand shower, streams sprays of tempered water when a user uses flow control and temperature control of the mixer.
  • the heat exchanger 200 in accordance with one aspect of the invention is arranged.
  • Fig. 2 is a perspective view of an exemplary heat exchanger 200 according to one embodiment of the invention.
  • the heat exchanger 200 may comprise a housing 210, a lid 220, and connector 230.
  • the lid 220 may have smaller circumference than the opening of the housing 210 or the drain entrance and thus exhibit a slit 221 surrounding the lid 220.
  • a drainpipe 160 connected to a water trap 161 (Fig. 3) is visible under the heat exchanger 200.
  • Fig. 3 is a schematic sectional view along line A-A of the heat exchanger 200 in Fig. 2.
  • the heat exchanger 200 comprises a housing 210, a lid 220, a connector 230 and a heat exchanger portion 240.
  • a water trap 161 with corresponding drainpipe 160 is arranged under the heat exchanger portion 240 and may comprise a draining piece 162 connected to a draining portion of the heat exchanger portion.
  • the lid 220 may be provided with additional perforations 222.
  • the wastewater from the shower enters the heat exchanger through perforations 222 or the surrounding slit 221. Guiding surface 211 may be arranged to guide the water onto the heat exchanger portion 240.
  • the water flow is indicated with dashed lines in the drawing.
  • the connector 230 is rotationally arranged around the axis 232 and can rotate at least approximately 90 degrees from a first rest position (as shown in Figs. 2 and 3) to a second rest position in which it is a lifted position.
  • the connector 230 comprises an inlet for cold-water and an outlet for heated water to and from the heat exchanger, respectively.
  • the cold-water is guided into the heat exchanger portion 240 via an inlet pipe 234, which is connected to the cold-water 140 (Fig. 1) from the mixer 300.
  • the heated water exits via an outlet pipe 233 and is returned to the mixer 300 via the pipe 170 (Fig. 1).
  • the connector 230 may be fixed to the heat exchange portion 240.
  • the lid 220 may be opened, e.g. by rotating around a fixation axis at one end, or removed and the connector 230 fixed to the heat exchanger portion 240 rotated from the first rest position to the second position, as illustrated in Fig. 4. This allows for easy access to the water trap and various parts of the heat exchanger for cleaning, inspection and/or maintenance.
  • the connecter and the heat exchanger portion may be connected in several additional points.
  • Fig. 5a illustrates the connector 230 from above.
  • Figs. 5b and 5c illustrate cross-sectional views of the connector 230 along lines A-A and B-B, respectively.
  • the connector 230 comprises a main body 235, inlet 236, outlet 237, connection pipe 233 to return water, connection pipe 234 to feed cold water, internal channel 2361 for cold water, internal channel 2371 for return water and rotatable joints 238 between connection pipes 236, 237 and the body 235.
  • the channels 2361 and 2371 are arranged inside the body 235.
  • the body may be made of any suitable material such as plastic, metal, etc. However, the channels must be insulated or made of material with poor thermal conductivity so that the heated water does not lose heat.
  • the channel 2361 connects the cold-water inlet 236 to the cold-water outlet piece 234, which may be fixed (or removably fixed with sealing) to the body of the heat exchanger portion 240.
  • the channel 2371 connects the return water outlet 237 to the return water inlet piece 233, which may be fixed to heat exchanger portion 240 (or removably fixed with a sealing).
  • the entire body 235 and pieces 233 and 234 are rotatable around the axis 232, which according to this embodiment is perpendicular to the longitudinal axis of the body 235.
  • the rotation is enabled by using rotatable joints 238, which may comprise rotary joints known and available on the market or known.
  • rotatable joints 238, which may comprise rotary joints known and available on the market or known.
  • connections 236 and 237 may vary depending on the use and installation.
  • Fig. 6a is a view from above of the heat exchanger portion 240, according to one embodiment of the invention.
  • Fig. 6b is a cross sectional view of the portion of the heat exchanger 240 along lines C-C and a partial enlargement of the heat exchanger portion 240.
  • the surfaces of the heat exchanger portion 240 function as a water distributer, comprise a distribution portion 241 and channels 242 inside the distribution portion 241 , a connection 243 to the cold-water piece 234, connection 244 to return water piece 233 and a drain opening 246.
  • the connections 243 and/or 244 may comprise quick coupling (e.g. push-pull quick release or threated quick release) or hose coupling, with female body attached to one of the connector 230 or the heat exchanger 240 and the male tip connected to heat exchanger or the connector, respectively.
  • a sealing (washer) or welding may also be used to connect the connector pieces (233, 234) to the heat exchanger portion.
  • the distribution portion 241 distributes the wastewater over the heat exchanger portion and channels through which flows the fresh water to be heated.
  • the distributer portion may for example be made of pressed sheet of stainless steel, (chrome) plated copper, aluminum or any other suitable material with good thermal conductivity, e.g. formed by joining upper and lower portions such that a channel system 242 for the cold-water shaped as a continuous spiral loop, with a height difference between the beginning and end of the spiral, is formed.
  • the height difference means that the connection 244 is situated substantially higher than the connection 243 with respect to the bottom base of the heat exchanger portion.
  • the spiral loops are formed as stairs in cross-section.
  • the inclination of the spiral loop results in that the warm wastewater flowing outside the channels 242 alongside the inclined loop wash over the loops from the outer peripheries of the heat exchanger portion towards its midpoint, substantially in a counter-current direction to the cold-water, which is pushed from the midpoint towards the outlet 233 in the channels.
  • the cold-water in the channels flow due to the water pressure of the cold water.
  • the floor drain may have a lower part 180 spaced from the distributer portion 241 with thermal transfer characteristics, which allows for additional wastewater to flow under the conductor portion, providing for further heat exchange.
  • the heat exchanger portion’s 240 distributer portion may comprise pipes 248/248’, slightly tilted in one direction (sloping downwards in the direction of arrow a) so that the wastewater flows in one direction, both above and below the pipes.
  • the cold-water fed through the piece 243 flows in an opposite direction.
  • the heat exchanger can be made of compressed copper pipes or extruded aluminum, or any other suitable material with good thermal conductivity.
  • One object of the invention is to provide a heat exchanger that serves for heat recovery and is subjected to low pressure load on the fed water side. Consequently, the cold-water to be heated with recovered heat from the wastewater is connected directly from the household or domestic water with same pressure. Household/domestic water is water used for indoor and outdoor household purposes. For this reason, the mixer 300 is designed to be able to feed the water to the heat exchanger 200 and mix the returned water with elevated temperature and mix it with the hot water.
  • Fig. 9 is an alternative embodiment of the heat exchanger 200.
  • the heat exchanger portion 240 comprises an additional back support portion 247 with hinges 249.
  • the rotation axis of the hinges 249 coincides with the rotation axis 230 of the connector 230.
  • the distributer 241 may be provided with vias 2401 connecting the upper surface of the distributer to the backside of it through channels 242 to allow wastewater to flow through to backside of the distributer, i.e., the space between lower part 180 and the distributer.
  • the vias 2401 are arranged at the curves (in opposite surface) but may be arranged in a suitable position along the spiral stairs.
  • the heat exchanger portion 240 may be hinged having a rotational axis same as the connector 230.
  • Fig. 10 illustrates schematically an embodiment of a shower mixer 300 and its interior.
  • the shower mixer comprises a housing 310, a wall fitting portion 311, a temperature control (or tap) 320, a water flow on/off/di verter control (or tap) 330, a hot-water valve 350, a cold-water valve 360, a thermostat 340, and connections to: cold-water 140, warm water 150, water feed pipe to heat exchanger 160, return water from the heat exchanger 170 and to shower head 180.
  • the water flow control 330 is turned on, which opens the valve 360 and depending on the water temperature, control valve’s position, an amount of cold-water (represented by dotted arrow 312) is fed to the heat exchanger and warm water (represented by dot dashed line 313) is fed to the thermostat 340.
  • a hot-water source such as a boiler
  • the heat exchanger recovers and returns heated water (represented by double dot dashed line 314) to the thermostat, the hot-water 313 and heated water 314 are mixed and temperature of the water 315 to the shower is increase.
  • the user decreases the amount of the hot-water from the hot-water source by increasing the temperature by using the temperature control 320 until a desired temperature is obtained.
  • the circulation in the entire system is thus affected and operates due to the pressure of the cold water.
  • the connector 230 is shown substantially centrally positioned in several embodiments, it may be arranged in any position along the long side or short side of the heat exchanger allowing. A combination of the different embodiments and combination of features from different embodiments is also possible.
  • the floor drain may be designed so that it can be used with or without the heat exchanger and its water connections. This makes it possible to choose to or later remove the heat exchanger without affecting the built-in floor drain.
  • the heat exchanger's connecting pipes can be mounted hidden or visible.
  • the floor drain may be designed for both concealed and visible pipe connections. In the case of a visible pipe connection up to the shower mixer, the lid to the floor drain may have a customized design.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention concerne un échangeur de chaleur (200), de préférence destiné à être installé dans un compartiment de vidange et comprenant une partie échangeur de chaleur (240) et un raccord (230) comprenant une entrée (236) et une sortie (237). La partie échangeur de chaleur (240) et le connecteur (230) sont agencés de façon à pouvoir tourner autour d'un axe de rotation (232) de telle sorte que la partie échangeur de chaleur et le connecteur peuvent tourner d'une première position à une seconde position.
EP20965238.7A 2020-12-07 2020-12-07 Échangeur de chaleur pour un compartiment de vidange, et système échangeur de chaleur Pending EP4256242A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2020/051174 WO2022124952A1 (fr) 2020-12-07 2020-12-07 Échangeur de chaleur pour un compartiment de vidange, et système échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP4256242A1 true EP4256242A1 (fr) 2023-10-11
EP4256242A4 EP4256242A4 (fr) 2024-09-04

Family

ID=81973540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20965238.7A Pending EP4256242A4 (fr) 2020-12-07 2020-12-07 Échangeur de chaleur pour un compartiment de vidange, et système échangeur de chaleur

Country Status (3)

Country Link
EP (1) EP4256242A4 (fr)
SE (1) SE2350865A1 (fr)
WO (1) WO2022124952A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD260414A3 (de) * 1986-06-13 1988-09-28 Bauakademie Ddr Waermeuebertrager zur rueckgewinnung von duschabwasserwaerme
CH709194A2 (de) * 2014-01-17 2015-07-31 Joulia Ag Wärmetauscher für eine Dusche oder Badewanne.
WO2015183155A1 (fr) 2014-05-27 2015-12-03 Recalor Ab Siphon de sol
ES2615633T3 (es) * 2014-06-05 2017-06-07 Alfa Laval Corporate Ab Conjunto de descarga
US10006645B1 (en) * 2017-01-27 2018-06-26 Paul A. Howard Greywater heat recovery with warm side agitation

Also Published As

Publication number Publication date
WO2022124952A1 (fr) 2022-06-16
SE2350865A1 (en) 2023-07-06
EP4256242A4 (fr) 2024-09-04

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