FI98489B - Sauna ventilation system - Google Patents

Abstract

The object of the invention is a ventilation system which is intended for the sauna and is attached to the sauna stove 1 as part of the stove. The ventilation system incorporates, according to requirement, heat recovery elements 4, intake air, recirculated air and waste air ducts with valves 16 and 21, waste air and intake air fans 17, intake air humidification and mixing systems 19 and 20, systems for the removal of condensation water 12 and 14 and humidity detector apparatus 15 with drive device 3. The assembled system is governed by drive devices and a programming unit. <IMAGE>

Description

98489 SAUNA VENTILATION SYSTEM i

The invention relates to a sauna belt change system which is attached to a heater as an integral part thereof. If necessary, the ventilation-5 system of the sauna includes e.g. humidification and post-ventilation equipment and heat exchanger equipment with heat recovery from the exhaust air and heat transfer to the supply air.

The air quality of the sauna plays an important role in creating good loose-10 enjoyment conditions during the bath. Ventilation also removes moisture generated in the sauna, which does not drain into the sewer. The heater is dimensioned with the individual heating and bath conditions 4 * in mind for each sauna. Suitable air quality and the desired air temperature must be able to be achieved in a sufficiently short time. In this case, the power of the heater has to be dimensioned *** p. Therefore, the power peak caused by electric heaters to the entire electricity: production and distribution system is large, e.g.

• · *: **: during sauna hours on weekends. In general, the ventilation and dehumidification of the sauna have to be adjusted manually during the sauna time and the firing time. In addition, the basic ventilation of the sauna is adjusted manually • * • 20 by means of valves after the sauna has dried between sauna sessions.

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Usually the sauna is heated by an electric or wood-heated stove.

··· V There are also gas and oil-fired heaters. The same goes for the market. * is a wood and / or electrically heated stove. Electric heaters are divided into storage heaters, which are constantly ready for bath - thermally insulated and with opening hatches, or continuously heated heaters, which are the most common of electric heaters.

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The continuously heated electric heater is switched on before bathing and the temperature of the sauna is kept desired in a thermostatically controlled manner throughout the bathing time. The operation of the heater can also be controlled with a clock switch or 5 remote controls.

Continuously heated stoves are the most common of wood stoves. They are heated continuously throughout the bath. In addition, there are also disposable heaters »which are heated before bathing. These heaters 10 cannot be heated during sauna time. Disposable heaters are also divided into flue and flue-free heaters. The flue-free stove is used in a smoke sauna. There is also an intermediate form of flue-free and flue-type stove on the market, which can be used like a smoke sauna or as an out-heating stove of your choice.

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The problem with a continuously heated electric heater is the high power demand “V, especially in the early stages of heating. For electrically heated saunas: * · · Ventilation is often compromised in order to save power and energy in the sauna • · ......

.T ’· per. Hot exhaust air is able to bind a large amount of moisture. When soaking the sauna ventilation directly into the ventilation duct of the rest of the structure, moisture condenses on the walls of the ventilation pipe as the air cools in the long duct. As the pipes get wet, the growth conditions of the mold growth in the air-conditioning system improve.

* '25 Sauna ventilation system with exhaust air heats the supply air • · · ;; / - * - MM # ......

, * * by means of a heat exchanger is known from DE 2602361.

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It describes a finned tube heat exchanger, the exhaust air cell of which is connected to the front of the exhaust air duct and the supply air cell between the supply air duct and the heater. The heat is transferred to the exhaust air supply air via a water circulating pipe and 30 pigmenting units. 'L ;.

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The cells are located separately from each other, but are connected together by a water recirculation system for heat transfer with fixed or flexible connections. Exhaust air duct is. additionally equipped with a duct fan in the publication.

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The ice system according to DE 2602361 requires separate sound recovery and delivery cells which are difficult to place in the sauna space, a fluid piping between the cells and a pump system for the circulation of the liquid. Even temporarily, the water cannot withstand temperatures well above 100 degrees Celsius at 10 normal atmospheric pressures.

Otherwise, the ice system must be constructed in accordance with the pressure resistance requirements. At low outdoor temperatures, the cell after the supply air duct can freeze, making the risk of water damage obvious.

The object of the present invention is to improve the ventilation of electrically heated saunas in particular, but also of other saunas, and to recover the energy obtained from the exhaust air of the sauna into the supply air. At the same time, the power demand of the heater can be reduced and the water condensation phenomenon in the air exchange ducts can be reduced. The invention also makes it possible to influence the quality of the steam and the after-ventilation of the sauna and the humidity conditions of the air.

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9 · The integrated stove and ventilation system do not consume substantially more '· **' · more slats than traditional heaters. Separate liquid piping ··· * ~ 25 and pumps for heat recovery and delivery are not required.

I * An integrated system is easy to build, safe, easy to maintain and use. With the system according to the invention, the ventilation and heating of the sauna works optimally in the desired way.

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The power requirement of the heater is reduced due to the heat recovery according to the invention. Ventilation heat recovery can be constructed, for example, so that the power required by the heater is reduced by about 10 ... 15%. In this case, the need for simultaneous electricity generation capacity 5 for 400,000 heaters decreases by 280 ... 420 MW if the average power of the heaters is 7 kW per electric heater, when there is no heat recovery per heater and the sauna supply air is unheated outdoor air.

The invention is based on a ventilation system 10 built into a heater, to which the inlet of the sauna and the exhaust air ducts are connected, if necessary equipped with a heat exchanger with heat recovery and transfer. The ventilation system may also include a humidification and recirculation system, condensate drainage devices, inlet and outlet fan, actuators and automation.

More specifically, the sauna ventilation system constructed in the heater according to the invention is characterized by what is%: set out in the characterizing part of claim 1.

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The invention provides considerable advantages.

<T:; · * · „. The sauna air exchange system according to the present invention, which is partly built into the heater, is simple and easy to use. The invention improves the ventilation of the sauna and preheats the exhaust air with the exhaust air. The invention reduces the power requirement of the heater, saves energy and 999 * 9 * * enables a sufficient level of fresh air, adjusts the humidity balance during bathing and dries the sauna structures to reduce decay and moisture damage, and reduces the humidity damage of the ventilation system of the rest of the building.

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The invention is described in more detail below with the aid of the accompanying drawings.

Figure 1 shows a continuously heated electric heater and a ventilation system 5 built into it in a vertical section and seen from the side.

Figure 2 shows an alternative arrangement of the supply and exhaust air connections and a storage type stove and the diamond exchange system 10 built into it, viewed vertically in cross-section and from the side.

In these figures, the upper part consists of the actual heater body 1, the heat storage mass 23, the thermal insulators 24, the heating resistors 2 and the necessary regulating and control units 3. A heat exchanger 4 is installed in the lower part of the heater 15. The supply air duct 5 for fresh air 6 is connected from the wall to the heat exchanger, from where air is directed through the side and / or inner cells 7 to the upper part of the heater and from there to the sauna space 8. Supply air is heated by heat recovery at a height out and still mixing with the hot • · • »ib airflow in the heater and / or above the heater.

* # * ·: ··:: f: Its exhaust 9 is taken from the lower part of the sauna space to the heat recovery fluid V, where the air, after transferring its heat energy in the heat recovery .. the exhaust air 9 of the inlet is led along the exhaust air duct 10 to another • · • ··; · ?? to the ventilation system of the building. With this arrangement, the temperature difference between the upper and lower part of the sauna can be smoothed out. Moisture 13 condensing from the sauna drain is drained along the water pipe 12 directly into the sewer well 14 of the sauna room. The thermostats 18 control and V * | the temperature of the hot air stream leaving the heater and the heater is monitored.

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If necessary, in order to balance the temperature and humidity of the sauna air and to keep it as desired, recirculated air 20 is suitably mixed with the supply air. The amount of recirculated air is controlled by valves 21 with actuators.

5 Humidity sensors 15 are available for the humidity control and monitoring of the sauna during bathing, as well as for the control of foot ventilation and drying. After the bath time of the sauna, during the residual ventilation, the air valve valves 16 and the fan units 10 are suitably adjusted by means of their actuators and control unit.

The ventilation section can be equipped with the necessary exhaust and supply air fans 17, if the ventilation system of the stove is not connected to the ventilation system of the rest of the building but acts as its own service area for the climate system 15. The amount of ventilation, supply and exhaust air subde and the amount of recirculated air in the supply air can be adjusted to the needs of each sauna room by changing the speed of the exhaust and / or supply air fan and / or adjusting the supply and / or exhaust air valves and recirculating air control devices.

··· • «20 • · * l The ventilation system can be equipped with air filtration systems 22 ···» • *. to remove contaminants from the air before transferring it to the heater ··· /: and out of the heater.

»· * · *" '' $ T $ In lighter solutions, the heat recovery draft can also be omitted »* ·, in which case the ventilation of the sauna is controlled by other devices • ·. ***: but heat cannot be recovered and moisture cannot be removed ··· before being led to the building's exhaust air system, or if * ·; *! The sauna acts as its own air conditioning service area before being vented out.

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The above are three solution options for a ventilation system built into an electrically heated heater. The ventilation system can also be built in a heater heated with solid, gaseous or liquid fuel.

All of the above stove type! can be equipped with the aforementioned equipment, which is generally known per se, or only (»below, according to the efficiency of each sauna and energy efficiency.

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Claims (10)

1. Sauna's ventilation system, equipped with friend switching installation, known for, I ..... ........... the heat exchanger (4) is installed to the sauna oven (1) as an associated part of the oven. 1 'H s heat exchanger (4) is used to supply the supply air (6) with Mn air (9), whereby the average power needed by the H sauna oven (1) can be lowered. hrs Ventilation system according to claim 1, known for having equipment H for collecting condensate water (13) and guiding it to the drain (14). hrs 3. Ventilation system according to claim 1, known to be provided with a Hj supply air duct system (5), equipped with venlils (16) and dampers (25) and their drive, H control and programming devices. The supply air duct system (5) takes the supply air for the MB sauna space to the lower part of the sauna furnace and leads it to the upper H ice section of the sauna furnace and from there to the hot air flow above the sauna furnace (8). hrs 4. Ventilation system according to claim 1, known to be provided with a K exhaust air & air system (10), equipped with valves (16) and dampers (25) and H drive devices (3). The exhaust air duct system (10) takes the extract air (9) as the floor level H 20 enters the sauna room and conducts the air further out of the sauna room 5. Ventilation system according to claim 1, known for being equipped with tili Bj and / or fresh air fan (17) for sauna ventilation. M 98489 Ventilation system according to claim 1, known for supplying and / or open-air drains with filter means (22) for removing air pollution. 7. Ventilation system according to claim 1, known that by means of controllable valves (21) and dampers (25) and their drive devices, a desired amount of the basttine's etheric air (20) can be admixed in the supply air to maintain the humidity and temperature of the sauna air (8). p & the desired level. Ventilation system according to claim 1, known for being equipped with humidity detector apparatus (15) and control unit (3) to automatically re-heat the sauna according to the moisture content of the sauna air. Ventilation system according to claim 1, known for being equipped with a humidifier for supply air (19) and humidity measuring apparatus (15). • ·: .i : 10. Ventilation system according to patent claim 1, known for the heat recovery system r - * · **; forms part of the furnace body (1) by means of the heat recovery elements of the • · *: · *: (4) damper, damper (25) and air cannula (7). i: V ::: 20 1 ::: V: T: - V · * · ... s: ··· ____: ·,. > ·. :. . ·:. V ,. ··· '·