WO2013038114A1 - Device and method for heating pool water - Google Patents

Abstract

Device for heating water (3) in a pool (2) comprising a hydraulic circuit (1) suitable for providing circulation of a liquid between a suction port (7) and a discharge port (8), an electric pumping device (4), a heat pump (5) comprising a power supply connector (20) and an electronic control circuit (6), characterised in that the heat pump (5) comprises a peripheral shell (11), in that it comprises a electrical connection cable (9) electrically connecting the pumping device (4) to the heat pump (5), and in that the control circuit (6) of the heat pump (5) is capable of varying the supply of electrical power to the pumping device (4), to at least switch the pumping device (4) on and off.

Description

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 DEVICE AND METHOD FOR HEATING BASIN WATER

 The invention relates to a device for heating a pond water, in particular a modular external device for heating a swimming pool.

 Some pools have an integrated hydraulic circuit for water conditioning: filtration, chlorination, heating, etc. Others do not have one. In the case of swimming pool having an integrated hydraulic circuit, the addition of a heat pump to the hydraulic circuit is complex and expensive. This operation requires the intervention of specialists in the technical room of the pool to mount the heat pump by diverting the hydraulic circuit. However, modifying the integrated hydraulic circuit of a swimming pool to add heat pump type equipment requires heavy intervention and major work and modifies the technical characteristics of the circuit.

 A fortiori in the case of a swimming pool that does not have such a hydraulic circuit - for example, seasonal swimming pools that can be dismantled - it is impossible to heat the water using a heat pump because of the lack of a circuit integrated hydraulics. Creating such a hydraulic circuit is either impossible or synonymous with heavy and expensive work on the shell of the pool.

 In addition, many standard heat pumps are intended to be mounted in a hydraulic circuit already having a hydraulic pump, or must be equipped with a hydraulic pump from manufacture.

 Thus, US 6,109,050 discloses a heat pump heating device of a basin. However, such a device remains a heavy installation because the exchanger of the heat pump must be mounted on an existing main hydraulic circuit of the basin, said circuit comprising a pump and a water filter. But it often happens that during the installation of a pond, its heating, expensive, is not planned. Therefore the circuit, including the pump, are not sized to accommodate a heater. The device presented by US 6,109,050 therefore does not allow the subsequent installation of a heat pump on a pre-existing circuit.

In addition, in the device taught by US 6,109,050, the operation of the pump is independent of the operation of the pump. _"

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heat. In the event of a problem with the heat pump, the pump continues to operate according to its programming.

 The invention aims to overcome these disadvantages by proposing a new device for heating a pond water.

 The invention aims to propose such a device that is standard.

The invention aims in particular to provide such a device that can be added simply to an existing pool and therefore without heavy modification of the basin, in particular that does not require modifying the walls of the pool or a pre-existing hydraulic circuit.

 The invention aims in particular to provide such a device that is simple in operation and maintenance.

 The invention also aims at such a device which ensures the safety of the equipment installed, and more particularly their durability, in particular that of the pump.

 To do this, the invention relates to a device for heating a pond water comprising:

 a hydraulic circuit adapted to ensure a circulation of liquid between at least one suction mouth of the water of the basin and at least one outlet of the water in the basin,

 - A device for pumping water with electrical power, interposed in the hydraulic circuit to generate a flow of water between each suction port and each discharge mouth,

 a heat pump interposed in the hydraulic circuit for heating the water, comprising:

 · A power supply connector to be electrically connected to a power source,

 An electronic control circuit,

 A peripheral shell defining an inner enclosure, characterized in that:

- the pumping device being outside the enclosure of the peripheral shell of the heat pump, an electric connecting cable passes through the hull _^

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device of the heat pump and electrically connects the pumping device to the heat pump, so as to allow the power supply of the pumping device by the heat pump,

 - The heat pump further comprises a water presence sensor in the hydraulic circuit electrically connected to the control circuit to be able to send to the latter at least electronic signals representative of a presence of water in the hydraulic circuit,

 - The control circuit is adapted to be able to control the stopping of the pumping device after a predetermined time from the start of the pumping device on non-detection of water by the water presence sensor.

 In addition, advantageously and according to the invention, the pumping device comprises a peripheral shell.

 In the invention the peripheral shells can be opened by local bushings and / or on whole sections, for example on the underside of the heat pump, or on one side of the heat pump to allow its air exchanger to to be in contact with the open air. However, the essential elements of the heat pump and the pumping device are respectively included in the enclosures defined by their respective shells.

 The invention therefore proposes a simple and modular device in which the pumping device is physically distinct from the heat pump. In particular, each equipment (pumping device or heat pump) has its own protective outer shell, independent of that of the other, so that the two devices are independent and could, for example, be marketed independently. Thus, each device is less bulky, lighter, and better ventilated, which has many advantages: ease of transport, simplicity of installation, direct access to the pumping device for its maintenance, cooling of the pumping device more efficiently, replacement of one of the equipment independently of the second so less expensive, ...

In addition, the invention makes it possible, for the first time, to obtain a device for heating the water of a basin that can be easily installed after the construction of the basin, especially for its improvement, without however requiring work on the basin. Indeed, the equipment of the proposed device can be arranged outside the pool, do not need to be below the water level of the pool, and can be at a selected distance from the pool so as not to clutter the pool. circumference of the pelvis. Such a device is even advantageously removable, so that, especially in small pools, it can be quickly removed before swimming and then reinstalled.

 Only the heat pump has an electrical connector to a power source external to the device of the invention. The connection of the device according to the invention is therefore extremely simple: a user without any knowledge of the basins can install such a device which requires only a simple electrical connection, for example of the type connected to the mains by current connector.

 In addition, the user does not need to switch on and off or program the heat pump and the pumping device independently. Indeed, such an interface exists only with the heat pump, which is then totally master of the operation of the pumping device, the latter having a slave relationship vis-à-vis the heat pump.

 The control circuit may be chosen from electronic circuits adapted to be able to control power a pumping device and a heat pump according to the invention. In particular, such an electronic circuit can control an electrical relay to close (or open) the electrical supply circuit of the pumping device and thus trigger its start (or stop).

 Advantageously and according to the invention, the control circuit of the heat pump only controls the running and stopping of the pumping device, so that it is a simple and inexpensive control which is also particularly adapted to certain types of pumping devices.

A water presence sensor according to the invention may for example be of the flow sensor type (particularly flow meter). This sensor _^

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presence of water makes it possible to detect the presence of water, or conversely the absence of water, that is to say to detect air in the hydraulic circuit, including in the state of bubbles among a stream of water.

 In combination, advantageously and according to the invention, the control circuit is adapted to be able to control the stopping of the pumping device after a certain period of time from the start of the pumping device on non detection of water by the sensor presence of water.

 It is a safety system that prevents the pump device from pumping air or a mixture of air and water (bubbles) for too long a time that can lead to serious deterioration both the pumping device and the heat pump. Thus, in the event of leakage or defusing of the hydraulic circuit for example, and therefore of air detection (in fact of no water detection or intermittent detection of water) in the hydraulic circuit by the presence sensor of water the device according to the invention is automatically stopped by the control circuit.

 The waiting time of a water inlet to the water presence sensor from the start of the pumping device is advantageously recorded in a non-volatile memory of the control circuit, for example in a phase of post-manufacturing programming.

 A device according to the invention is also characterized in that the control circuit of the heat pump is adapted to be able to control a power modulation element interposed between the power supply connector of the heat pump and the said electric cable. connection so as to vary the power supply of the pumping device, allowing at least the start and stop of the pumping device.

 Power modulation is particularly simple when it comes to implementing start and stop functions.

However, in certain heating devices according to the invention, it may be particularly advantageous to control the operation of the pumping device more precisely, and in this case a circuit can be provided. _^

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heat pump control system for modulating the power of the pumping device to intermediate values between zero power and maximum power.

 Advantageously, a device according to the invention is also characterized in that:

 - The heat pump further comprises a temperature sensor disposed in the hydraulic circuit in the vicinity of an upstream hydraulic crossing of the peripheral shell of the heat pump,

 said temperature sensor is electrically connected to the control circuit in order to be able to send to the latter electronic signals representative of a temperature value, called the cold temperature, measured,

 - The control circuit is adapted to be able to control the power modulation element according to said cold temperature.

 This cold temperature sensor is disposed near an upstream crossing, that is to say, inlet water sucked by the pumping device in the heat pump. In general, such a cold temperature sensor is disposed upstream of the heat exchanger of the heat pump provided for the heating of the water basin. This heat exchanger is the heat exchanger that includes any heat pump for transferring calories from a compressed heat transfer fluid to a fluid to be heated (here water sucked from the basin).

 This cold temperature sensor connected to the control circuit makes it possible to provide functions such as, for example, a measurement of the water temperature of the pool for informational purposes for a user since the heat pump is also equipped with an interface to display the measured temperature, or a start of the heat pump depending on the water temperature of the basin.

In fact, it can thus be provided, for example, for the heat pump, via its control circuit, to start the pumping device at regular time intervals in order to check the temperature of the water and to: - put or keep running the heat pump if the temperature is below a predetermined temperature, called the switch-on temperature,

 - stop or keep the heat pump off when the temperature is above the switch-on temperature.

 The switch-on temperature can be a temperature stored in a non-volatile memory, entered by a user via an interface, predetermined during a post-production programming, or calculated by the control circuit according to one or more parameters. such as for example the desired temperature of the pond water entered by a user.

 Thus, advantageously and according to the invention, the control circuit is adapted to be able to control the stopping of the pumping device for a predetermined duration on detecting a cold temperature greater than a temperature value, called the predetermined triggering temperature.

 In addition, advantageously and according to the invention, the heat pump comprises an external temperature sensor electrically connected to the control circuit to be able to send to the latter electronic signals representative of an outside air temperature value, the circuit The control unit is adapted to be able to prevent the heat pump from being switched on by detecting an outside temperature lower than a predetermined outside temperature limit value.

 Indeed, although the water temperature of the pond has a temperature below the set temperature, if the outside temperature is low - for example less than a calculated value or stored in a memory of the control circuit - the efficiency the heat pump is low and the heating is not enough or even zero. It is also a safety measure for the heat pump, which does not start under low outdoor temperature conditions.

Furthermore, advantageously and according to the invention, the pumping device and the heat pump each have at least two hydraulic connections and at least one electrical connector. 8

 In particular, advantageously and according to the invention, the pumping device has two hydraulic connections passing through its peripheral shell. In particular, the pumping device has a hydraulic inlet water connection, and a hydraulic outlet water connection.

 In addition, advantageously and according to the invention, the pumping device has an electrical connector, so that it can be electrically connected to the heat pump.

 For its part, advantageously and according to the invention, the heat pump has two hydraulic connections passing through its peripheral shell. In particular, the heat pump has a hydraulic inlet water connection, and a hydraulic outlet water connection.

 In addition, advantageously and according to the invention, the heat pump has two electrical connectors, one of which is the power connector intended to be connected to a power supply and the second is a connector intended to connect electrically the pumping device and the heat pump.

 Thus, the pumping device and the heat pump can be interposed one after the other in a hydraulic circuit. For example :

 the pumping device has a hydraulic inlet connection intended to be connected to a suction mouth of the pond water via a first pipe of the hydraulic circuit, and a hydraulic outlet connection intended to be connected to the heat pump by a second pipe of the hydraulic circuit,

 the heat pump has a hydraulic inlet connection intended to be connected to the device for pumping water from the basin via the second pipe, and a hydraulic outlet connection intended to be connected to a delivery port by a third pipe of the hydraulic circuit.

 In addition, advantageously, the electrical connections can be for example such that:

- The heat pump has a first electrical connector to be connected to an external power source, for example a _^

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socket for connecting a residential electricity distribution network or a terminal block to be connected by a specific cable to an electricity distribution network (in particular for a powerful heat pump), and an electrical connector to be able to be connected to the pumping device,

 - The pumping device has an electrical connector to receive power from the power supply of the heat pump.

 Said connectors may be at the end of electrical cables in extension of the heat pump and / or the pumping device.

 Said connectors and connectors are advantageously simple to facilitate the connection and disconnection of cables and hydraulic lines. They meet the standards advantageously and are advantageously standard.

 In addition, the heat pump and the pumping device are advantageously installed close to each other.

 Thus, advantageously and according to the invention, this device furthermore comprises:

 a duct of length less than one meter whose first end is adapted to be connected to one of said hydraulic connections of the heat pump and whose second end is adapted to be connected to one of said hydraulic connections of the heat pump device; pumping,

 an electric cable of less than one meter length, at least one end of which is adapted to be connected to one of said electrical connectors of the heat pump and the pumping device, so as to electrically connect the power supply of the pumping and power supply of the heat pump.

Furthermore, advantageously and according to the invention, the heat pump further comprises an interface comprising a screen for displaying information and at least one button to be able to receive manual commands, the interface being electrically connected to the control circuit. to be able to receive representative electronic signals from the latter _

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information to display and transmit to the latter electronic signals representative of manual commands.

 The adjustment of the heat pump and in particular the desired temperature of the pond water can thus be easily performed by a user. In addition, the temperature of the sucked water can be displayed live by the display of the heat pump interface.

 Thus, thanks to the invention, the heat pump being the master of the pumping device, the user intervenes via a single interface: that of the heat pump, without having to worry about the operation and adjustment of the pumping device.

 Other information can be advantageously displayed: for example operating error messages, maintenance tips, etc., as well as other actions of a user can be envisaged (forced defrost, forced start, programming heating periods, ...).

 In particular, advantageously and according to the invention, the control circuit is adapted to be able to control the starting and stopping of the pumping device on detection of electronic signals representative of a manual control respectively of start-up and of stop.

 Thus the user of a device according to the invention can force the start or stop of the heating of the basin.

 The invention also relates to a device for heating a pond water characterized in combination by all or some of the characteristics mentioned above or below.

 The invention also extends to a method of heating a pond water in which:

a basin water heating device is chosen comprising: an electrically powered water pumping device generating a flow of water in a hydraulic circuit extending from at least one suction mouth of pond water to at least one outlet mouth of the water in the basin, _

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^■ a heat pump interposed in the hydraulic circuit heating the water of the hydraulic circuit, said heat pump comprising:

 ♦ a power supply connector electrically connected to a power source,

 ♦ an electronic control circuit,

^♦ a peripheral shell defining an inner enclosure,

characterized in that

 - the pumping device being outside the enclosure of the peripheral shell of the heat pump, the power supply of the pumping device is supplied by the heat pump via an electric connecting cable passing through the peripheral shell of the pump with heat and electrically connecting the pumping device to the heat pump, so as to allow the power supply of the pumping device by the heat pump,

 the control circuit of the heat pump controls a power modulation element interposed between the power supply connector of the heat pump and the said electric connection cable so as to be able to vary the power supply of the heat pump. pumping device, allowing at least the starting and stopping of the pumping device.

 - The heat pump further comprising a water presence sensor in the hydraulic circuit electrically connected to the control circuit to be able to send to the latter at least electronic signals representative of a presence of water in the hydraulic circuit, the control circuit controls the stopping of the pumping device after a predetermined time from the start of the pumping device on non-detection of water by the water presence sensor.

The invention also relates to a method of heating a pond water characterized in combination by all or some of the characteristics mentioned above or below. _

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 Other objects, features and advantages of the invention will appear on reading the following non-limiting description which refers to the appended figures in which:

 FIG. 1 is a schematic representation of a device for heating a pond water according to an embodiment according to the invention,

 FIG. 2 is a functional block diagram of one embodiment of the device of FIG. 1.

 The heating device represented in FIG. 1 is intended for heating a water 3 of a swimming pool basin 2 diagrammatically shown in section through a vertical plane. It comprises a hydraulic circuit 1 between a swimming pool water suction mouth 7 submerged in the pool basin 2, and a discharge mouth 8 of this water. The hydraulic and electrical circuits internal to the equipment (pumping device 4 and heat pump 5) are represented symbolically according to the hydraulic and electrical symbols. The scales between the different elements of Figure 1 (in particular between equipment and basin 2) do not reflect reality.

 On the hydraulic circuit 1 are interposed:

 a device 4 for pumping water adapted to be able to circulate the pool water in the hydraulic circuit 1 and to form in particular a suction of water at the level of the suction mouth 7 and a discharge of water at the mouth 8 of discharge,

 - A heat pump 5 adapted to heat the pool water with calories taken from the air.

 The hydraulic circuit is therefore completed by:

 a line 22 connecting a hydraulic connection 19 of the pumping device 4 and a hydraulic coupling 16 of the heat pump 5,

 a line 31 between the suction mouth 7 and a hydraulic connection 18 of the pumping device 4,

a line 32 between a hydraulic connection 17 of the heat pump 5 and the discharge mouth 8. _

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 The pumping device 4 and the heat pump 5 (or "equipment") are installed outside the basin, preferably in a place in the open air or at least open to outside air. The equipment can be installed below the water level of the pond, but also at the same level or slightly above the water level of the pond. Thus equipment can be installed near a pool dug in the ground without the need to excavate around the pool to install the equipment.

 This is why at least one of the equipment - for example the pump device 4 as in FIG. 1 - can be equipped with a manual filling mouth 34, allowing a user to manually add water to the device. hydraulic circuit to prime it. This filling mouth 34 is particularly advantageous when the pumping device is located near the highest point of the hydraulic circuit 1. When, on the other hand, the pumping device is situated lower than the rest of the hydraulic circuit, the latter can be started, for example, by the suction and discharge mouths 7, 8, leaving the filling mouth 34 open.

 In particular, a device according to the invention has a hydraulic priming connection to be able to connect the hydraulic circuit to a source of water supply under pressure. Thus, the water priming is easily performed by a user without special technical knowledge. In particular, the ignition connection is a current connection, for example of the quick-connect type.

 Each of the equipment is physically distinct and has its own peripheral protective shell. Thus the pumping device 4 has a peripheral shell 10, and the heat pump 5 of a peripheral shell 11, for example made of a thermoformed plastic material.

The peripheral shells 10, 11 are traversed by electrical connectors and hydraulic connections. In addition, the peripheral shell 11 of the heat pump 5 must be open at least in a zone where the outside air passes in order to put its air exchanger 27 in contact with _^ .

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outside air to allow it to recover calories (to evacuate the frigories of its coolant).

 The heat pump 5 has an electrical cable 30 equipped with a power supply connector adapted to be electrically connected to an electrical outlet of an electrical distribution network. The pumping device 4 for its part is connected to the heat pump by an electric cable 9 equipped with a final electrical connector 21. The final electric connector 21 is adapted to be connected to a jack 33 of the heat pump 5. The power supply of the pump device 4 is therefore dependent on the heat pump 5.

 Indeed, once the heat pump electrically connected to the electrical network, and the pumping device 4 electrically connected to the heat pump, the heat pump controls the power supply of the pumping device 4 by means of an electromechanical relay 28 disposed in the heat pump on the electrical supply path of the pumping device 4. Such an electromechanical relay 28 may be of the all-or-nothing type or else of the potentiometer type. In the embodiment shown in FIG. 1, the electromechanical relay 28 is of the all-or-nothing type.

 This electromechanical relay 28 is controlled by a control circuit 6 of the heat pump 5. The control circuit 6 is an electronic circuit comprising at least one non-volatile memory and elements programmed or able to perform operations of a program. stored in a memory, as well as input / output ports for receiving sensor data 13, 14, 15 and an interface 23, and outputting control data to the electromechanical relays 28, 29 at least.

The control circuit 6 is advantageously master of the operation of the pumping device 4, while it is external to the heat pump. In addition, the control circuit 6 also controls the operation of the compressor 26 of the heat pump for circulating and compressing the coolant between an exchanger on air 27 for exchange between the air and the coolant and the heat exchanger 12 between heat transfer fluid and swimming pool water. This control of the compressor 26 is carried out via a relay _

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 29 electromechanical type all-or-nothing. It should be noted that, as in any heat pump, the coolant undergoes expansion in an expansion valve 35 placed between the exchanger 12 and the air exchanger 27.

 For the implementation of the control of the electromechanical relays 28, 29, the control unit 6 receives signals from different sensors. Thus, a water presence sensor 15 is installed in the inner portion of the heat pump of the hydraulic circuit 1 to detect the arrival (or not) of water in the heat pump. Such a sensor makes it possible in particular to provide a programming of the control circuit 6 such that the equipment 4, 5 is stopped if no water is detected after a certain delay from the start of the pumping device 4, or if the flow of water is intermittent or irregular (presence of air bubbles).

 In addition, a suction water temperature sensor 13 disposed in the hydraulic circuit 1 before the exchanger 12 makes it possible to determine the water temperature of the pool. Thus, for example, if the pond water is already at the desired temperature, the control circuit 6 does not turn on the compressor 26 and can stop the pumping device. Such a suction water temperature sensor 13 also makes it possible to indicate the current temperature of the pool water to a user at the request of the latter.

 In addition, an air temperature sensor 14 is also connected to the control circuit 6. This sensor makes it possible to predict the prohibition of the start-up of the heat pump if the outside temperature of the air is too low. Indeed, the efficiency of the heat pump is directly related to the temperature of the outside air from which it extracts calories for heating the pool water. Depending on the temperature of the sucked water, the desired temperature of the pond water, and the outside temperature, the control circuit 6 is able, thanks to an earlier programming, to determine the start or shutting down equipment 4, 5.

The control circuit 6 is advantageously connected to an interface 23 making it possible to broadcast messages to a user using, for example, a screen 25. The interface also makes it possible, thanks to at least one button 24, to _

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a user to enter or modify data in memory of the control circuit 6, in particular the user can increase or decrease the desired temperature of the water 3 of the basin 2. The button (s) 24 bit ( also allow a user to force the start or stop of the equipment 4, 5.

 In Figure 2, a block diagram of a particular mode of operation of a device according to the invention, in particular a device according to Figure 1, is presented.

 At the beginning of the diagram, the entire device, in particular equipment is at a standstill.

 In step 100, the control circuit 6 closes the electromechanical relay 28 and thus supplies the pumping device 4 with electrical power so as to turn it on. The pumping device 4 therefore pumps water from the pond 3, so that water 2 sucked from the pond circulates in the hydraulic circuit 1. At this stage the compressor 26 is stopped.

 Then the device goes to step 101 during which the control circuit 6 acquires the data from the water presence sensor 15 sucked into the hydraulic circuit for a predetermined time stored in memory, for example of the order of 5 minutes. If, during this time interval, no water is detected, the device proceeds to step 106. On the contrary, as soon as water - in particular a regular water flow - is detected by the sensor 15 of presence of water, the device goes to step 102.

In step 102, the device acquires the data from the sampled water temperature sensor 13 and compares them with an engagement temperature value. This switching temperature is advantageously calculated from a desired temperature by a user that the latter has previously entered through the interface 23 and the control circuit 6 has stored in memory. For example, the switching value can be calculated lower by 1 ° C than the temperature desired by the user. If the temperature measured by the suction water temperature sensor 13 is higher than the switching temperature, the device goes to step 106. If instead the temperature measured by the temperature sensor 13 of _^

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the sucked water is lower than the engagement temperature, the device proceeds to step 103.

 In step 103, the device acquires the data from the air temperature sensor 14 to ensure that it is well above a temperature limit below which the operation of the heat pump would be not very effective. This limit temperature is stored in a non-volatile memory. The temperature limit is dependent on the heat pump used, it can be about 7 ° C for example. If the air temperature is below the limit temperature, the device proceeds to step 106. If the air temperature is above the limit temperature, the device proceeds to step 104.

 In step 104, the device switches on the heat pump, that is to say that the control circuit 6 closes the electromechanical relay 29 for controlling the compressor 26 so that the latter starts to operate. circulate and compress the coolant. The heating device is then in full operation: that is to say that the pool water circulates in the hydraulic circuit 1 and is heated by the heat pump.

 After step 104, the device goes to step 105, during which - the equipment 4, 5 remains in operation - the control circuit 6 acquires the data from the sampled water temperature sensor 13 and compares them with a trip temperature value, which is a shutdown temperature of the heater, greater than or equal to the temperature desired by a user. This trigger temperature is therefore advantageously calculated from the desired temperature recorded, for example the trigger temperature may be equal to or calculated greater than 1 ° C to the desired temperature.

As long as the temperature of the sucked water is below the trigger temperature, the device operates in a loop with step 104, that is to say that the pumping device and the heat pump remain in operation. . As soon as the temperature of the sucked water is equal to or exceeds the trigger temperature, the device proceeds to step 106. _

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 In step 106, the electromechanical relay 28 and, if applicable (when following a step 105), the electromechanical relay (s) 29 is (are) open by the circuit 6 control device so as to cause the stopping of the pumping device, and respectively if necessary the compressor 26 of the heat pump. Following step 106, the entire heating device (equipment 4, 5) according to the invention is therefore at a standstill. After step 106, the device proceeds to step 107.

 In step 107, a timer with a predetermined delay is triggered by the control circuit 6 during which no other action is taken by the control circuit 6. The control circuit 6 and the interface 23 may for example be put on standby. The time of step 107 can be chosen according to the characteristics of the pool and / or the heating device (for example depending on the ratio between the volume of water in the pool and the heating power of the heat pump, the layout suction and discharge mouths, etc.). Such a delay can, for example, be chosen of the order of 2 hours.

 However, it can be expected that a manual order to start by a user via the interface 23 will interrupt step 107.

 Many other operating procedures depending on different events can be provided in a pond water heating device according to the invention. For example, the display of error messages according to the various reasons for arriving at step 106, or the defrosting phases of the air exchanger 27. In addition, different steps or organized in a different order may be provided while remaining in accordance with the present invention.

 A device according to the invention is simple to install, thus, the pumping device and the heat pump being physically independent, they are modular and can be transported one after the other. They can also be replaced in a modular way in case of failure, thus reducing costs.

Thus, a heat pump according to the embodiment shown in FIG. 1 according to the invention has dimensions of approximately _

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 100cm x 50cm x 80cm for a weight of about 40 kg, and the pumping device dimensions of about 40cm x 30cm x 30cm for a weight of about 5 kg.

 Can be placed without the need for work, a device according to the invention is also very advantageously removable and can be removed from the pool during swimming, or in winter. It can even be used in turns for the heating of several basins.

 In addition, the pumping device 4 being separated from the heat pump 5, access and therefore maintenance of these equipment is facilitated.

 The hydraulic pipe 22 and the electrical connecting cable 9 of the heat pump 5 and the pumping device 4 advantageously measure a length of approximately 1 meter so that the two devices can be installed close to each other.

 In addition, the pumping device 4 can generate a fluid flow rate of about 2000 L / hour compatible with a heat pump 5 that can deliver a thermal power of 12kW.

 The heat pump interface 23 may have an on / off button, a configuration button, and two setting buttons (up, down), as well as a liquid crystal type digital display for display at least one temperature.

 The invention can be the subject of many other embodiments not shown.

 In particular in the embodiment shown in Figure 1, the pumping device and the heat pump have been greatly simplified and may actually contain other elements not shown.

 Nothing prevents the interposition of additional devices in the hydraulic circuit 1 such as a filtering device, chlorination, UV treatment, oxygenation, etc.

In addition, a device according to the invention is advantageously applied to pool pools but can also advantageously be used in other basins, for example in aquariums. _

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 In addition, the power supply of the heat pump (and therefore indirectly the pumping device) can be provided by an autonomous system of energy production, in particular by a renewable energy production system, for example of the type photovoltaic panels, wind turbine, etc.

Claims

 1 / - Device for heating a water (3) basin (2) comprising:  a hydraulic circuit (1) adapted to ensure a circulation of liquid between at least one suction mouth (7) of the water of the pond and at least one mouth (8) for discharging the water into the basin,  - A device (4) for pumping water (3) electrically powered, interposed in the circuit (1) hydraulic to generate a flow of water between each mouth (7) suction and each mouth (8) of repression,  a heat pump (5) interposed in the hydraulic circuit (1) for heating the water (3), comprising:  A connector (20) for power supply to be electrically connected to a power source,  An electronic control circuit (6),  · A peripheral shell (11) defining an inner enclosure, characterized in that:  - the device (4) pumping being outside the enclosure of the shell (11) peripheral of the heat pump (5), an electric cable (9) connecting through the shell (11) peripheral of the pump to heat (5) and electrically connects the pumping device (4) to the heat pump (5), so as to allow the power supply of the pumping device (4) by the heat pump (5),  - The heat pump (5) further comprises a sensor (15) for the presence of water in the hydraulic circuit (1) electrically connected to the control circuit (6) to be able to send to the latter at least representative electronic signals d a presence of water in the hydraulic circuit (1),  the control circuit (6) is adapted to be able to control the stopping of the pumping device (4) after a predetermined duration from the start of the pumping device on non-detection of water by the sensor (15) presence of water. 21 - Device according to claim 1, characterized in that the circuit (6) for controlling the heat pump (5) is adapted to be able to controlling a power modulation element (28) interposed between the power supply connector (20) of the heat pump (5) and said electrical connecting cable (9) so as to be able to vary the power supply electrical device (4) pumping, allowing at least the start and stop of the device (4) pumping  3 / - Device according to claim 2, characterized in that:  - The heat pump (5) further comprises a temperature sensor (13) disposed in the hydraulic circuit (1) near an upstream hydraulic crossing of the shell (11) peripheral of the heat pump (5),  said temperature sensor (13) is electrically connected to the control circuit (6) in order to be able to send to the latter electronic signals representative of a measured temperature value, called cold temperature,  - The control circuit (6) is adapted to be able to control the power modulation element (28) according to said cold temperature.  4 / - Device according to claim 3, characterized in that the control circuit (6) is adapted to be able to control the stopping of the device (4) pumping for a predetermined time on detection of a cold temperature greater than a value temperature, said predetermined triggering temperature.  5 / - Device according to one of claims 1 to 4, characterized in that the heat pump (5) further comprising an external temperature sensor (14) electrically connected to the control circuit (6) to be able to send to this last electronic signals representative of an outside air temperature value, the control circuit (6) is adapted to be able to prohibit the start of the heat pump (5) on detection of an outside temperature lower than a predetermined outside temperature limit value. 6 / - Device according to one of claims 1 to 5, characterized in that the device (4) for pumping and the heat pump (5) each have at least two hydraulic connections (16, 17, 18, 19) and at least one electrical connector (20, 21, 33).  Il - Device according to claim 6, characterized in that it further comprises:  a duct (22) less than one meter long whose first end is adapted to be connected to one of said hydraulic connections (16, 17) of the heat pump (5) and whose second end is adapted to be connected to one of said hydraulic connections (18, 19) of the pumping device (4),  - an electric cable (9) less than one meter long, at least one end of which is adapted to be connected to one of said electrical connectors of the heat pump (5) and the pumping device (4), so as to electrically connect the power supply of the pumping device and the power supply of the heat pump.  8 / - Device according to one of claims 1 to 7, characterized in that the heat pump (5) further comprises an interface (23) having a screen (25) for displaying information and at least one button ( 24) to be able to receive manual commands, the interface being electrically connected to the control circuit (6) so that it can receive from the latter electronic signals representative of information to be displayed and transmit to the latter electronic signals representative of commands manual.  91 - A method of heating a pond water (3) (2) in which:  a device for heating a pond water (3) (2) comprising: ^■ a device (4) for pumping water (3) power supply generating a water flow in a circuit (1) hydraulic extending at least one mouth (7) for sucking water from the pond to at least one mouth (8) for discharging the water into the basin, ^■ a heat pump (5) interposed in the circuit (1) hydraulic heating the water (3) of the hydraulic circuit, said heat pump comprising: ^■ connector (20) electrically connected to power supply to a power source, ^■ a circuit (6) of control electronics, ^■ a shell (11) defining an inner peripheral enclosure, characterized in that  the pumping device (4) being outside the enclosure of the hull (11) device of the heat pump (5), the power supply of the pumping device (4) is supplied by the heat pump (5) via an electric connecting cable (9) passing through the peripheral shell (11) of the heat pump (5) and electrically connecting the pumping device (4) to the heat pump (5) so as to allow the pumping device (4) to be electrically powered by the heat pump (5) ,  - the control circuit (6) of the heat pump (5) controls a power modulation element (28) interposed between the power supply connector (20) of the heat pump (5) and the said cable ( 9) electrical connection so as to vary the power supply of the device (4) pumping, allowing at least the start and stop of the device (4) pumping  - the heat pump (5) further comprising a sensor (15) for the presence of water in the hydraulic circuit (1) electrically connected to the control circuit (6) in order to be able to send to the latter at least representative electronic signals; a presence of water in the hydraulic circuit (1), the control circuit (6) controls the stopping of the pumping device (4) after a predetermined period of time from the start of the pumping device on non-detection water by the sensor (15) of presence of water.