temperature-controlled water supply system

Abstract

The invention relates to a temperature-controlled water supply system (10) comprising a tank (6) suitable for containing water intended to be cooled and / or heated, means for measuring the temperature of the water contained in the tank (6), mixing means (25), first means for conveying water (2) between an inlet port (1) of the system (10) and a first inlet port (14) of the mixing means (25), second means for conveying water (18) between a first outlet port of the tank (11) and a second inlet port (15) of the mixing means (25), third means for conveying water (19) between the outlet port (16) of the mixing means (25) and an outlet port of the system (10), means for cooling and / or heating the water contained in the tank (6),the mixing means (25) being capable of mixing the water flowing in the first water conveying means (2) and the water flowing in the second water conveying means (18) so that the water flowing in the third water conveying means (19) comes from this mixture. Figure 1,

Description

Title of the invention: system for supplying water at regulated temperature Technical field

[0001] The invention, which belongs to the field of agri-food, concerns the production of dough, and more precisely the production of baking dough.

[0002] To make a dough, different ingredients are generally necessary, such as flour, salt or yeast. To ensure the binder between these different ingredients, it is also important to add water, which will allow the dough to shape during the kneading operation.

[0003] Thus, the invention relates in particular to a water supply system intended for the preparation of a dough. Preamble

[0004] During the process of making a dough, it is necessary to add water in sufficient proportion, so as to obtain a dough of satisfactory texture.

[0005] In addition, we know that the temperature of the water used is of particular importance. Indeed, adding water at a temperature that is too low or too high can harm kneading and impact the fermentation and baking of the dough. In other words, using water that is too hot or too cold has a negative impact on the quality of the finished product.

[0006] Obviously, the quantity and temperature of the water to be added depends on the type of flour used and the type of dough to be made: bread dough, pizza dough, pasta.

[0007] To determine the optimum water temperature to use, a baker also takes into account the type and temperature of flour he is using, the temperature of his kneading trough and the ambient temperature of the room in which it is located.

[0008] Once the temperature to be reached has been determined, it is necessary to control and act on the temperature of the water used to make the dough, and this in a constant manner, in order to ensure that it remains equal to the desired temperature.

[0009] This operation is delicate because a bakery, whether artisanal or industrial, produces a large quantity of bread every day, which means that it uses an equally large quantity of water, which generally comes from the sanitary water network. However, one difficulty lies in the fact that the temperature of the network water varies according to the days and seasons, particularly depending on the outside temperature.

[0010] A bakery must therefore be equipped with a water supply system capable of continuously controlling and regulating the water from the sanitary network that it takes at the inlet, in order to deliver water at the outlet that is at the temperature desired by the baker.

[0011] There are systems for supplying chilled water using large-volume open tanks equipped with cooling coils to directly cool the water in the tank. However, these known systems generally have complex structures, which makes their installation time-consuming and their maintenance difficult and expensive. In addition, these systems are energy-intensive because they require the cooling of a large quantity of water, and they do not allow high output flow rates to be achieved because before being delivered, all of the water must first be cooled so as to reach the desired temperature.

[0012] Furthermore, while the mains water generally needs to be cooled by the system, it is sometimes necessary, particularly in winter when it is very cold, to reheat it in order to reach the desired temperature. Summary of the invention

[0013] The present application aims to remedy all or part of the aforementioned drawbacks.

[0014] To this end, the present invention relates to a system for supplying water at regulated temperature comprising:

[0015] -A tank capable of containing water intended to be cooled and / or heated, said tank comprising a first tank inlet port through which the tank is capable of being supplied with water, a first tank outlet port from which the water contained in the tank is capable of being discharged from the tank;

[0016] - First temperature measuring means capable of measuring the temperature of the water contained in the tank;

[0017] - Mixing means comprising a first inlet port of mixing means mixing, a second mixing means inlet port and a mixing means outlet port;

[0018] - First means for conveying water between an inlet port of the system and the first mixing means inlet port;

[0019] - Second means for conveying water between the first outlet port of tank and the second mixing means inlet port,

[0020] - Third means for conveying water between the outlet port of means of mixing and an output port of the system;

[0021] - Means for cooling and / or means for heating the water contained in the tank, the mixing means being capable of mixing water circulating in the first water conveying means and water circulating in the second water conveying means.

[0022] Compared to existing solutions, the first water delivery means allow the system of the invention to directly supply water from the sanitary water network, without the need to cool or heat it.

[0023] Thanks to the presence of the mixing means, the user has great flexibility in obtaining water at the desired temperature at the outlet, since said mixing means allow him to adapt the proportions of water coming directly from the sanitary water network and water coming from the tank.

[0024] The adaptation of the proportions at the level of the mixing means depends in particular on the desired water temperature at the outlet of the system, and also on the temperature of the water contained in the tank. The colder the latter, the less water will be needed at the outlet to cool the water coming directly from the network to the desired temperature. Conversely, the user can decide to use more water from the tank, and cool the latter less significantly. In both cases, the system has the advantage of being flexible and energy-efficient.

[0025] The system according to the invention therefore has the advantage of being energy-efficient, while allowing water to be delivered continuously and at a higher flow rate compared to the systems of the prior art. In other words, the system of the invention allows a production capacity of water at regulated temperature greater than existing systems.

[0026] Due to its efficiency, the system of the invention has the advantage of cooling the water more quickly than existing systems, and it is therefore possible to turn it off during its periods of inactivity, even short ones, since upon restarting, it will quickly be able to deliver cooled water.

[0027] For the purposes of the present invention, the term “tank” is synonymous with “reservoir” or “cistern”, and generally designates any device capable of storing a liquid, for example water.

[0028] For the purposes of the present invention, the expression "water conveying means" generally designates a pipe or conduit or assembly of pipes or conduits, made of any suitable material and arranged to allow water to circulate.

[0029] The temperature-controlled water supply system may further have one or more of the following features, taken alone or in combination.

[0030] According to one embodiment, the system for supplying water at regulated temperature comprises means for cooling and means for heating the water contained in the tank.

[0031] Compared to existing solutions which only allow the water to be cooled, the system of the invention therefore has the advantage of being able to deliver, on demand, cooled or heated water in relation to the water circulating in the first water conveying means.

[0032] This particularly advantageous embodiment makes it possible to heat the water present in the tank, if necessary, when the water circulating in the first means The water supply system is at a temperature lower than the desired temperature at the outlet of the water supply system. This can happen, for example, in winter, when the outside temperature is very low.

[0033] According to one possibility, the water circulating in the first water conveying means comes from the sanitary water network.

[0034] Generally, the water circulating in the first water conveying means is intended to circulate exclusively in the direction from the inlet port of the system to the first inlet port of the mixing means.

[0035] According to one possibility, the first water conveying means form a main water circuit of the temperature-controlled water supply system.

[0036] According to one possibility, the system comprises second temperature measuring means capable of measuring the temperature of the water circulating in the first water conveying means.

[0037] Alternatively, the temperature of the water flowing through the first water conveying means is determined by other means, for example using models based on the outside air temperature.

[0038] According to one possibility, the second temperature measuring means are arranged at the end of the first water conveying means, in the immediate vicinity and upstream of the mixing means. Account is therefore taken of any change in the temperature of the water during its circulation in the first water conveying means.

[0039] According to one possibility, the water contained in the tank comes from the sanitary water network.

[0040] According to one possibility, the system of the invention can operate in two modes: a summer mode in which the system is capable of delivering water at a temperature lower than the temperature of the water in the domestic water network, and a winter mode in which the system is capable of delivering water at a temperature higher than the temperature of the water in the domestic water network.

[0041] When the system is operating in summer mode, the heating means are deactivated and the water in the tank can only be cooled by means of the cooling means.

[0042] When the system is operating in winter mode, the cooling means are deactivated and the water in the tank can only be heated by means of the heating means.

[0043] Generally speaking, the mixing means are capable of producing a mixture of the water circulating in the first water conveying means and the water circulating in the second water conveying means so that the water circulating in the third water conveying means comes from this mixture.

[0044] In other words, the mixing means make it possible to mix the water coming from first water conveying means with water from the second water conveying means, which water being cooled or heated relative to the water circulating in the first water conveying means, so as to obtain, at the outlet of the mixing means, water resulting from this mixing, which then circulates in the third water conveying means towards an outlet port of the temperature-regulated water supply system.

[0045] The water circulating in the third water conveying means is therefore at a temperature distinct from that circulating in the first water conveying means, the latter being cooled or heated by the water coming from the tank and circulating in the second water conveying means.

[0046] According to one possibility, the mixing means are capable of mixing the water coming from the first water conveying means and the water coming from the second water conveying means according to particular proportions, and for example predetermined proportions, which are known to a user of the temperature-controlled water supply system.

[0047] According to one possibility, the temperature-controlled water supply system comprises third temperature measuring means capable of measuring the temperature of the water circulating in the third water conveying means.

[0048] According to another possibility, the temperature of the water circulating in the third water conveying means is determined and / or estimated according to other means, for example from the temperature of the water contained in the tank measured by means of the first temperature measuring means, the temperature of the water circulating in the first water conveying means, and the proportions in which the mixing means carry out the mixing.

[0049] According to one possibility, the system comprises means for controlling the mixing means, said control means being configured to allow the proportions in which the water coming from the first water conveying means and the water coming from the second water conveying means are mixed to be varied.

[0050] According to one possibility, the control means of the mixing means are mechanical, and manual action by a user is necessary to vary the proportions in which the water from the first water conveying means and the water from the second water conveying means are mixed.

[0051] According to one possibility, the means for controlling the mixing means are electronic and remotely controllable by a user.

[0052] According to one possibility, the means for controlling the mixing means allow a user of the system to know at any time the proportions in which the water from the first water conveying means and the water from the second water conveying means are mixed.

[0053] Thus, the temperature-controlled water supply system according to the invention is capable of delivering water at the desired temperature throughout the year.

[0054] Generally, the water circulating in the second water conveying means is intended to circulate exclusively in the direction from the first tank outlet port to the second mixing means inlet port.

[0055] Generally, the water circulating in the third water conveying means is intended to circulate exclusively in the direction from the outlet port of the mixing means to the outlet port of the system.

[0056] According to one possibility, the mixing means comprise a three-way valve.

[0057] According to another possibility, the mixing means comprise a thermostatic valve.

[0058] According to one embodiment, the cooling means are arranged to cool the water contained in the tank outside the tank.

[0059] According to this embodiment, the water contained in the tank is not cooled directly in the tank, but outside the tank.

[0060] According to one embodiment, the tank comprises a second tank outlet port and a second tank inlet port, the system comprising fourth means for conveying water between the second tank outlet port and the second tank inlet port.

[0061] Generally, the water circulating in the fourth water conveying means is intended to circulate exclusively in the direction from the second tank outlet port to the second tank inlet port.

[0062] According to one possibility, the fourth water conveying means form a water cooling circuit.

[0063] According to one embodiment, the water cooling means comprise fluid conveying means.

[0064] According to one possibility, the fluid conveying means are capable of cooling the water circulating in the fourth water conveying means.

[0065] Thus, the water contained in the tank is only cooled when it circulates in the fourth water conveying means, which form the water cooling circuit.

[0066] According to one possibility, the fluid conveying means form a refrigeration circuit.

[0067] According to one possibility, the refrigeration circuit is a closed circuit.

[0068] According to one possibility, said fluid is a refrigerant fluid, which is capable of circulating within the refrigeration circuit.

[0069] According to one possibility, the refrigerant fluid is a HydroFluoro-Olefins fluid, commonly referred to as HFO fluid.

[0070] According to another possibility, the refrigerant is a natural fluid, of the propane R290 type.

[0071] According to one embodiment, the first water conveying means comprise a diversion point, the system comprising fifth water conveying means between said diversion point and the first tank inlet port.

[0072] For the purposes of the present invention, a branch point designates a particular arrangement of pipes or conduits allowing the arrangement, downstream of the branch point, of two separate pipes from a single pipe arranged upstream of the branch point.

[0073] According to this embodiment, the water circulating in the first water conveying means and the water contained in the tank come from the same inlet port of the system.

[0074] According to one embodiment, the system comprises means for introducing salt into the water circulating in the first water conveying means and / or into the water contained in the tank.

[0075] According to one possibility, the salt introduction means are arranged upstream of the diversion point of the first water conveying means. Thus, the water supplying the tank is salted in a proportion identical to the water circulating in the first water conveying means.

[0076] Advantageously, salting the water intended to supply the tank also makes it possible to reach in said tank, if necessary, a water temperature below 0 degrees Celsius without risk of ice formation, since the freezing point of salt water is below 0°C.

[0077] According to one possibility, the salt introduction means comprise a liquid salt injection device.

[0078] According to one possibility, the liquid salt injection device comprises a liquid salt reservoir and a dosing device.

[0079] According to one possibility, the doser is a Venturi effect doser, also referred to as a Venturi doser. The liquid salt injection device makes it possible in particular to ensure homogeneous dissolution of the salt in the water, which makes it possible to improve the kneading quality of the dough since the ingredients such as salt and water are mixed optimally.

[0080] According to one possibility, the Venturi effect doser is adjustable. Thus, the user can himself adjust the dosage of salt in the water to be used.

[0081] According to one possibility, the second temperature measuring means are arranged downstream of the salt introduction means. According to this possibility, the possible temperature variation due to the introduction of salt into the water is taken into account.

[0082] According to one possibility, the temperature-controlled water supply system comprises means for measuring a water flow rate, which are capable of measuring the flow rate of the water circulating in the first water conveying means.

[0083] According to one possibility, the means for measuring a water flow rate comprise a flow meter.

[0084] According to one possibility, the temperature-controlled water supply system comprises first opening and / or closing means capable of opening and / or cutting off the water supply within the first water conveying means.

[0085] According to this possibility, said first opening and / or closing means are arranged at the inlet port of the temperature-regulated water supply system.

[0086] According to this possibility, the water supply to the system can be cut off in certain circumstances, for safety reasons during system maintenance operations or after the detection of a water or fluid leak within the system, or during a prolonged period of inactivity of the system.

[0087] According to one possibility, the first opening and / or closing means comprise a stopcock.

[0088] According to one possibility, the temperature-controlled water supply system comprises second opening and / or closing means arranged near the outlet port of the system and capable of occupying an open position and a closed position.

[0089] According to this possibility, the second opening and / or closing means, when they occupy said open position, allow the supply of water at regulated temperature, while they prevent the supply of water at regulated temperature at the outlet of the system when they occupy said closed position.

[0090] According to one possibility, the second opening and / or closing means comprise a water solenoid valve, and for example a variable flow water solenoid valve.

[0091] According to one possibility, the temperature-controlled water supply system comprises filtering means capable of filtering the water circulating in the first water conveying means.

[0092] According to one possibility, the filter means are arranged upstream of the diversion point.

[0093] According to this possibility, it is ensured that all of the water delivered at the outlet of the system of the invention is of good quality.

[0094] According to one possibility, the filtering means comprise a water filter.

[0095] According to one possibility, the system comprises pressure reduction means capable of maintaining a maximum pressure within the first water conveying means.

[0096] According to one possibility, the pressure reduction means are arranged upstream of the diversion point, which also makes it possible to maintain a maximum pressure within the fifth water conveying means.

[0097] According to one possibility, the pressure reducing means comprise a pressure reducer.

[0098] According to one possibility, the system comprises means capable of preventing a backflow of water from the tank towards the first water conveying means.

[0099] According to one possibility, the means capable of preventing a backflow of water comprise a non-return valve, which is arranged at the level of the fifth water conveying means, downstream of the diversion point.

[0100] Thus, the non-return valve makes it possible to prevent any backflow of water from the tank towards the first water conveying means.

[0101] Generally, the water circulating in the fifth water conveying means is intended to circulate exclusively in the direction from the diversion point to the first tank inlet port.

[0102] According to one possibility, the tank is closed, which allows the water in the tank to be kept under pressure and ensures a good level of hygiene in the tank.

[0103] According to one possibility, the tank is at least partially made of stainless steel.

[0104] According to one possibility, the heating means are arranged on or in the tank.

[0105] According to another possibility, the heating means are arranged in contact with the tank.

[0106] According to yet another possibility, the heating means are arranged close to the tank.

[0107] According to one embodiment, the heating means comprise a heating resistor.

[0108] According to one possibility, the system comprises mixing means capable of mixing the water present in the tank.

[0109] According to one possibility, the mixing means operate continuously.

[0110] Alternatively, the mixing means operate intermittently, on demand.

[0111] Thus, the water contained in the tank is regularly stirred so as to avoid any thermal stratification, which therefore ensures that the temperature of the water present in the tank is perfectly homogeneous.

[0112] According to one possibility, the system comprises means for emptying the tank.

[0113] Advantageously, said draining means make it possible to completely drain the water from the tank in order to carry out cleaning or repair operations on the tank and / or other parts of the temperature-controlled water supply system.

[0114] According to one possibility, the means for emptying the tank comprise a drain valve.

[0115] According to one possibility, the temperature-controlled water supply system comprises water circulation means capable of circulating water within the fourth water conveying means forming the water cooling circuit.

[0116] According to one possibility, the water circulation means comprise water circulation means.

[0117] According to one possibility, the water pumping means comprise a pump, for example a magnetic pump capable of pumping the water contained in the tank in order to circulate it within the fourth water conveying means.

[0118] According to one possibility, the system comprises safety means capable of ensuring correct and safe operation of the fourth water conveying means forming the water cooling circuit.

[0119] According to one possibility, the safety means comprise means for detecting a water flow rate, which are capable of detecting a flow rate of the water circulating in the fourth water conveying means, in order to ensure proper operation and safety of the circulation means.

[0120] According to one possibility, the means for detecting a water flow rate comprise means for measuring a water flow rate, such as for example a flow meter.

[0121] According to one possibility, the safety means further comprise an expansion tank capable of absorbing and / or compensating for undesirable pressure variations within the water cooling circuit, which may occur during drops or increases in the temperature of the water circulating in the water cooling circuit.

[0122] According to one possibility, the safety means comprise a safety valve capable of preventing undesirable overpressure within the water cooling circuit.

[0123] According to one embodiment, the system for supplying water at regulated temperature comprises energy transfer means capable of implementing an energy transfer between the water circulating in the fourth water conveying means and the fluid circulating in the fluid conveying means.

[0124] According to one possibility, the energy transfer means are capable of carrying out a heat transfer from the water circulating in the fourth water conveying means and towards the fluid circulating in the fluid conveying means.

[0125] In other words, the fluid is capable of absorbing the heat from the water circulating in the water cooling circuit in order to cool it, which has the consequence of increasing the temperature of the fluid and causing it to pass into the gaseous state.

[0126] According to one embodiment, the energy transfer means comprise a plate exchanger.

[0127] According to one possibility, the plate exchanger comprises 316L steel.

[0128] According to one possibility, the fluid changes from the liquid state to the gaseous state during the energy transfer process implemented by the energy transfer means.

[0129] According to one possibility, the system comprises fluid circulation means capable of ensuring the circulation of the fluid within the fluid conveying means.

[0130] According to one possibility, the fluid circulation means comprise compression means capable of compressing the fluid in the gaseous state produced at the outlet of the energy transfer means.

[0131] According to one possibility, the compression means comprise a compressor.

[0132] According to one possibility, the fluid circulation means comprise condensation means capable of condensing the refrigerant in the gaseous state produced at the outlet of the compression means.

[0133] According to this possibility, the condensation means gradually operate a heat transfer between the refrigerant in the gaseous state produced at the outlet of the compression means, which is compressed and therefore at high pressure and high temperature, and the outside air.

[0134] More precisely, the condensation means make it possible to gradually lower the temperature of the gaseous refrigerant fluid so as to return it to the liquid state.

[0135] According to one possibility, the condensation means comprise a condenser.

[0136] According to one possibility, the means for circulating the refrigerant fluid include take means of expanding the refrigerant in the liquid state produced at the outlet of the condenser in order to supply the energy transfer means with liquid refrigerant at an appropriate pressure.

[0137] According to one possibility, the expansion means comprise a pressure reducer.

[0138] According to one possibility, the temperature-controlled water supply system comprises second means for controlling the water circulation means within the fourth water conveying means.

[0139] According to one possibility, said second control means are capable of controlling said water pumping means, for example to enable them to be started or stopped.

[0140] According to one possibility, said second control means are capable of adjusting the flow rate of water pumped by the magnetic pump.

[0141] Generally speaking, the second control means make it possible to implement a cooling cycle for the water contained in the tank, in particular when it is determined that the temperature of the water in the tank is above a target temperature determined by a user of the system.

[0142] According to one possibility, the second control means, upon receiving information from the first temperature measuring means indicating that the temperature of the water contained in the tank is higher than the target temperature, automatically start the water circulation means in order to circulate the water contained in the tank in the fourth water conveying means. Once the temperature of the water contained in the tank is equal to the target temperature, the second control means cause the water circulation means to stop and / or the circulation of the refrigerant fluid to stop within the refrigerating circuit.

[0143] According to one possibility, the second control means are capable of controlling the operation of the mixing means.

[0144] According to one possibility, the second control means operate the starting of the mixing means so as to mix the water contained in the tank, when the water circulation means are stopped and / or when the circulation of the refrigerant fluid is stopped within the refrigeration circuit.

[0145] According to one possibility, the second control means operate the stopping of the mixing means so as to cease the mixing of the water contained in the tank, when the water circulation means are in operation.

[0146] According to one possibility, the second control means are capable of controlling the heating means.

[0147] According to one possibility, the second control means operate the starting of the heating means upon receipt of information indicating that the temperature of the water contained in the tank is lower than the target temperature. Once the temperature of the water contained in the tank is equal to the target temperature, the second control means cause the heating means to stop. Brief description of the figures

[0148] [Fig.l] represents a system for supplying water at regulated temperature according to an exemplary embodiment of the invention, which is presented without limitation. Detailed description

[0149] The invention will be better understood by observing the system for supplying water at regulated temperature, hereinafter referred to as system 10, shown in [Fig.l].

[0150] First water conveying means 2, which form a main water circuit of the system 10, extend between an inlet port 1 of the system 10 and a first inlet port 14 of a three-way valve 25. The first water conveying means 2 make it possible to convey water from the inlet port 1 of the system 10 to the first inlet port 14 of the three-way valve 25.

[0151] The water supplied at inlet 1 of the system 10 comes from the sanitary water network. Thus, the water circulating in the first water conveying means 2 comes from the sanitary water network.

[0152] A tank 6 is capable of containing water, said tank 6 being closed and maintained under pressure. The tank 6 is notably made of stainless steel.

[0153] The tank 6 has a first tank inlet port 8 through which the tank is supplied with water, and a first tank outlet port 11 from which the water from the tank 6 is conveyed to a second inlet 15 of the three-way valve 25 by circulating in second water conveying means 18.

[0154] Third water conveying means 19 further allow water to be conveyed between an outlet 16 of the three-way valve 25 and an outlet 17 of the system 10.

[0155] A temperature sensor 30 is capable of measuring the temperature of the water circulating in the third water conveying means 19.

[0156] A water solenoid valve 26 is capable of allowing or preventing the supply of water in output of the system, occupying respectively an open position or a closed position. Thus, the supply of water to the output 17 of the system 10 is conditioned by the fact that the solenoid valve 26 occupies the open position.

[0157] The tank 6 also has a second outlet port 12 and a second inlet port 13 between which extend, outside the tank, fourth water conveying means 3 forming a water cooling circuit.

[0158] The fourth water conveying means 3 make it possible to convey water exclusively in the direction going from the second tank outlet port 12 to the second tank inlet port 13.

[0159] The tank 6 is further capable of being supplied with water, at the first tank inlet port 8, by means of fifth water conveying means 37 capable of circulating water between a branch point 9 of the main water circuit and the first tank inlet port 8.

[0160] The diversion point 9 makes it possible to capture the water circulating in the first water conveying means 2 in order to supply the tank 6.

[0161] Thus, the water supplying the tank 6 has the same origin as the water supplying the first water conveying means 2. As mentioned above, this water comes from the sanitary water network.

[0162] The system 10 further comprises stirring means (not shown) capable of stirring the water present in the tank 6, in order to ensure the homogeneity of the temperature of the water in the tank 6.

[0163] Fluid conveying means 4 forming a refrigeration circuit are arranged to allow the water circulating in the fourth means to be cooled. water conveyance 3. More precisely, the refrigeration circuit is a closed circuit, comprising an assembly of copper pipes, within which a refrigerant fluid, for example of the HFO fluid type, is capable of circulating.

[0164] A stopcock 21, arranged just after the inlet port 1 of the system 10, is capable of occupying a closed position and an open position respectively.

[0165] When it occupies the closed position, the stopcock 21 makes it possible to cut off the water supply to the first water conveying means 2. Thus, the user can cut off the water supply during periods of prolonged inactivity of the system 10, or when carrying out maintenance operations on the system 10.

[0166] When it occupies the open position, which is the case during periods of operation of the system 10, the stopcock 21 makes it possible to open the water supply within the first water conveying means 2.

[0167] A filter 22 makes it possible to filter the water at the inlet of the first water conveying means 2 forming the main water circuit of the system 10. The arrangement of the filter 22 upstream of the diversion point 9 makes it possible to filter not only the water circulating in the first water conveying means 2, but also the water circulating in the fifth water conveying means 37 supplying the tank 6. Thus, the filter 22 makes it possible to guarantee the quality and the quality of all the water which will be delivered to the outlet 17 of the system 10.

[0168] A pressure reducer 23 makes it possible to maintain a maximum pressure within the first water conveying means 2 forming the main water circuit of the system 10.

[0169] A flow meter 28 makes it possible to continuously measure the value of the flow rate of the water circulating within the first water conveying means 2 forming the main water circuit of the system 10.

[0170] A liquid salt injection device 5 is capable of injecting liquid salt into the water circulating in the first water conveying means 2. The liquid salt injection device 5 is arranged upstream of the diversion point 9.

[0171] Thus, the liquid salt injection device 5 makes it possible to ensure measured and homogeneous salting not only of the water circulating in the first water conveying means 2, but also of the water circulating in the fifth water conveying means 37 intended to supply the tank 6.

[0172] This ensures that salt water is available at the outlet 17 of the system 10 in a precise and appropriate dosage. Advantageously, it is therefore no longer necessary to salt the dough during kneading.

[0173] More specifically, the liquid salt injection device 5 comprises a liquid salt reservoir 52 and a Venturi effect metering device 51.

[0174] A temperature sensor 29 is capable of continuously measuring the temperature of the water circulating in the first water conveying means 2. Advantageously, the temperature sensor 29 is arranged upstream and close to the first inlet port 14 of the three-way valve 25, so as to measure the temperature of the water at the outlet of the main water circuit, as close as possible to the three-way valve 25.

[0175] A non-return valve 24 is arranged downstream of the diversion point 9, on the fifth water conveying means 37 which convey the water towards the first tank inlet port 8. The non-return valve 24 makes it possible to prevent any untimely backflow of water from the tank 6 and towards the first water conveying means 2.

[0176] A drain tap 27 is arranged so as to allow the tank 6 to be drained.

[0177] The drain valve 27 is able to occupy an open position allowing the tank 6 to empty the water it contains, and a closed position, in which the water is retained in the tank 6.

[0178] The complete emptying of the tank 6 allows, for example, the implementation of the cleaning of the tank 6, or maintenance operations of the system 10.

[0179] A temperature sensor 36 makes it possible to continuously measure the temperature of the water present in the tank 6.

[0180] A heating resistor 7 is capable of heating the water present in the tank 6, which can therefore be heated by means of this heating resistor 7, or cooled under the action of the refrigeration circuit when it circulates in the fourth water conveying means 3.

[0181] At the level of the fourth water conveying means 3, the system 10 comprises in particular a magnetic pump 31, a flow meter 32, an expansion tank 33 and a safety valve 34.

[0182] The magnetic pump 31 is capable of circulating water contained in the tank 6 in order to circulate it in the fourth water conveying means 3 forming the water cooling circuit. When this is the case, the refrigerant, circulating within the fluid conveying means 4 forming the refrigerating circuit, gradually cools the water circulating in the fourth water conveying means 3, which has the effect of gradually cooling the water in the tank 6.

[0183] Control means (not shown) make it possible to start and / or stop the magnetic pump 31, depending on the temperature of the water contained in the tank 6 and the requirements in terms of water temperature at the outlet of the system 10.

[0184] The flow meter 32 makes it possible to continuously measure the flow rate of the water circulating in the fourth water conveying means 3 forming the water cooling circuit.

[0185] The expansion vessel 33 is capable of absorbing and / or compensating for undesirable pressure variations that may occur within the fourth conveying means. water 3 forming the water cooling circuit, in particular during temperature variations affecting the water circulating therein.

[0186] The safety valve 34 is capable of preventing undesirable overpressure within the fourth water conveying means 3 forming the water cooling circuit.

[0187] Thus, the expansion tank 33 and the safety valve 34 are devices for ensuring the safety of the water cooling circuit.

[0188] At the level of the fluid conveying means 4 forming the refrigeration circuit in which a refrigerant of the HFO fluid type circulates, the system comprises a plate exchanger 35, a compressor 41, an air condenser 42 and an expansion valve 43.

[0189] The plate exchanger 35, which fulfills the function of evaporator, makes it possible to implement a heat transfer between the water circulating in the fourth water conveying means 3 and the refrigerant circulating in the fluid conveying means 4, said refrigerant becoming gaseous or partially gaseous under the action of the increase in its temperature caused by the heat transfer.

[0190] The compressor 41 makes it possible to compress the gaseous refrigerant fluid obtained at the outlet of the plate exchanger 35.

[0191] The air condenser 42 is capable of causing a heat transfer between the refrigerant in the gaseous state compressed by the compressor 41 and the outside air. Under the action of the air condenser 42, the gaseous refrigerant sees its temperature drop and gradually becomes liquid again.

[0192] Finally, the expansion valve 43 makes it possible to expand the liquid refrigerant fluid obtained at the outlet of the air condenser 42.

[0193] Throughout the cooling cycle which has just been described, the refrigerant circulates within the fluid conveying means 4 forming the refrigerant circuit, which therefore constitutes a closed circuit in which the refrigerant successively passes from the liquid state to the gaseous state and vice versa.

[0194] Of course, the invention is not limited to the example embodiment shown in [Fig.l], and encompasses all the variant embodiments conceivable for those skilled in the art.

Claims

Claims

1. System (10) for supplying water at regulated temperature comprising: • A tank (6) capable of containing water intended to be cooled and / or heated, said tank (6) comprising: • A first tank inlet port (8) through which the tank (6) is capable of being supplied with water; • A first tank outlet port (11) from which the water contained in the tank (6) is able to flow out of the tank (6); • First temperature measuring means (36) capable of measuring the temperature of the water contained in the tank (6); • Mixing means (25) comprising a first mixing means inlet port (14), a second mixing means inlet port (15) and a mixing means outlet port (16); • First means for conveying water (2) between an inlet port (1) of the system (10) and the first inlet port of mixing means (14); • Second water conveying means (18) between the first tank outlet port (11) and the second mixing means inlet port (15), • Third water conveying means (19) between the outlet port of the mixing means (16) and an outlet port (17) of the system (10); • Means for cooling and / or means for heating the water contained in the tank (6). The mixing means (25) being capable of mixing water circulating in the first water conveying means (2) and water circulating in the second water conveying means (18).

2. System (10) according to claim 1, wherein the cooling means are arranged to cool the water contained in the tank (6) outside the tank (6).

3. System (10) according to one of the preceding claims, wherein the tank (6) comprises a second tank outlet port (12) and a second tank inlet port (13), the system comprising fourth water conveying means (3) between the second tank outlet port 12 and the second tank inlet port (13).

4. System (10) according to one of the preceding claims, wherein the water cooling means comprises fluid conveying means (4).

5. System (10) according to claim 3 and claim 4, which comprises energy transfer means capable of implementing an energy transfer between the water circulating in the fourth water conveying means (3) and the fluid circulating in the fluid conveying means (4).

6. System (10) according to claim 5, wherein the energy transfer means comprise a plate exchanger (35).

7. System (10) according to one of the preceding claims, wherein the first water conveying means (2) comprise a diversion point (9), the system comprising fifth water conveying means (37) between said diversion point (9) and the first tank inlet port (8).

8. System (10) according to one of the preceding claims, which comprises means for introducing salt (5) into the water circulating in the first water conveying means (2) and / or into the water contained in the tank (6).

9. System (10) according to one of the preceding claims, in which the heating means comprise a heating resistor (7).

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