FR2711906A1 - Balneotherapy device with electromechanical controls - Google Patents

Abstract

Balneotherapy device for baths including injectors of water and/or of an air/water mixture, the fluid being moved by a fan or a pump. This device includes a control button and a scheduler, which bears control cams controlling the position of switches and is driven in rotation by a motor (MP), and provides the user with a choice of two operating speeds and a cycle which changes from one of these speeds to the other.

Description

BALNEOTHERAPY DEVICE WITH ELECTRO-MECHANICAL CONTROLS
The present invention relates to baths equipped with balneotherapy devices.

 I1 is known to equip baths with balneotherapy devices, by having air and / or water injectors in their wall.

 These injectors are arranged in the bottom of said bath and / or in the side wall thereof, the injectors arranged at the bottom of the bath are used to inject hot air while the side injectors are used to inject water mixed or not with hot air.

 The circulation of air and / or water is controlled by increasingly complex control devices.

 These devices use sophisticated electronic circuits to provide the user with multiple possibilities. Among the various possibilities offered by these devices, let us cite by way of example, the supply of air at different temperatures and different speeds, the formation of wave effects, the sequential control of different groups of injectors.

 These devices are usually very expensive because they are manufactured in small series and they use very expensive electronic components.

 Another drawback presented by the known devices concerns the operating modes during which the fan used to circulate the air is driven at low speed.

 Indeed, the air injected into the bathtub is circulated in the pipes by a fan and is heated by passing over a resistor placed downstream of said fan.

 The user can adjust the quantity of air injected by acting on a control by which he increases or reduces the speed of rotation of the fan.

In current systems, the resistor placed in front of the fan is alternately supplied with electric current or not by the use of a bimetallic strip detecting the overshooting of an air temperature set value.

 The drawback of the current devices then lies in the fact that the resistor is supplied by an electric current always having the same intensity, even when the fan rotates at reduced speed, which induces very close changes of state of the bimetallic strip.

 The present invention tends to propose a balneotherapy device much cheaper to manufacture and more reliable in its operation. In addition, in the device according to the invention, the intensity of the current flowing in the heating resistor is modified as a function of the operating speed of the fan.

 The invention will be better understood from the description which follows given by way of nonlimiting example with reference to the appended drawings in which FIGS. 1a, 1b to 8a, 8b respectively show the electrical diagram and the profiles of the cams used for seven alternative embodiments of the device according to the invention.

 As can be seen in these figures, the balneotherapy devices according to the invention operate with electro-mechanical components and do not require any electronic component, which makes it possible to propose much less expensive devices.

 These devices use switches of different types such as reversers, contactors and breakers, the word switch can be used interchangeably to designate one or the other of these types.

 In the alternative embodiment of FIGS. 1a and 1b, the device offers two fan operating speeds, the user can choose one or the other of these speeds or a cycle for switching from one to the other of these speeds.

 These functions are carried out with the electrical diagram shown in Figure la which requires, the fan V and the resistor R apart, that few components: a BMA on-off button, a programmer carrying three control cams driven in rotation by an MP motor, a contactor cl and two reversers c2 and c3.

 The BMA on-off button is preferably a button controlling, by means of a pneumatic control, a pressure switch locking in its on or off positions. This type of control button is preferable in balneotherapy devices because the user is dealing with a pneumatic control which eliminates the risk of electrocution always possible with electric controls.

 With such an on-off button, the pressure switch changes position each time the user presses the control button and keeps the position taken until said button is pressed again.

 According to the invention, the different fan rotation speeds are created by varying the overall resistance of a circuit comprising said fan V and a resistance R.

 As shown in the drawings, when the inverters c2 and c3 are both in their position a, said fan and resistance are arranged in parallel in the circuit, while when the inverters c2 and c3 are in their position b, the fan and the resistance are in series.

 In the parallel configuration, the fan is driven at higher speed than in the series configuration while the resistor is supplied with a higher current than in the series configuration.

 This gives operation at high speed of air circulation and significant heating during configuration in parallel, and operation at lower speed of air circulation and low heating during configuration in series.

 The decrease in the amount of heat dissipated in the resistance when the speed of air circulation decreases and therefore the decrease in the amount of air licking the resistance eliminates the risk of operating this resistance to beyond the thermal characteristics recommended by the manufacturer.

 The electrical diagram in FIG. 1a represents the device at rest, the on-off button is open, the contactor cl is open, the two reversers are either in their position a or in their position b.

When at time tO, the user wishes to start the balneotherapy device, he presses the
BMA which feeds the motor MP of the programmer carrying the three cams 1, 2, 3 shown in Figure lb.

 At time tl, the cam 1 acts on the contactor cl in order to bring it into its position b for which it allows the supply of electric current to the circuit comprising the fan V and the resistor R.

 The inverters being in their positions a, the balneotherapy device is in its so-called strong operating mode for which a lot of air is injected at high temperature into the bathtub. A bimetallic strip not shown in the drawing controls the temperature at which air is injected into the bathtub so that it does not exceed a predetermined threshold.

 When the strong operation is thus installed, the user can, if he wishes to keep this operation by pressing the BMA button, the pressure switch then goes to its stop position and the motor MP of the programmer is no longer powered. which causes the cams 1 to 3 to stop in position.

 When he wishes to switch to the so-called weak operation of his balneotherapy device, the user presses the BMA button again, the motor MP of the programmer is again supplied and the cams are rotated. At time t2, the two inverters c2 and c3 have switched to position b for which the fan V and the resistor R are in series.

 As can be seen in FIG. 1b, the cams 2 and 3 are such that the inverter c3 passes to position b before the inverter c2, so as to prevent the resistance being supplied with electric current while the fan does not is not powered and cannot cool.

 As before, if the user wishes to keep this operating mode, he presses the BMA button, which cuts the power to the programmer's motor MP.

 When the user wishes to change the operating mode again, he presses the BMA button again, which brings him to its operating position, the cams rotate again and, at time t3, the reversers c2 and c3 switch to their position a, the device then operates in strong mode.

 When the user wants a wave effect, he leaves the BMA button in its on position, the cams are then continuously rotated.

 The device will then have a strong operation from tl to t2, then a weak operation from t2 to t3, then a strong operation from t3 to t4 and a stop from t4 to tl, and so on as long as the BMA button is not manipulated again.

 Of course, the opening time of the contactor cl, that is to say the duration of rotation of the cams from t4 to tl can be expected to be as short as possible, it has been exaggerated in the drawing to make it more readable.

 When the user has finished his bath, he must press the BMA button to return it to the open position when the device stops, that is to say between t4 and tl.

 In the embodiment of FIGS. 2a and 2b, the programmer has 4 cams so as to allow automatic positioning of said programmer in each zone of strong or weak operation.

As can be seen in Figure 2a, the electrical diagram is very close to that of Figure la, only a contactor c4 was added in parallel with the button
BMA and the programmer's MP motor.

 The cams 1 to 3 for controlling the contactor cl and the reversers c2 and c3 are the same as above.

 When the user wants to use the balneotherapy device, he presses the BMA button as before at time tO. At time tl, cam 4 closes the contactor.

 At time t2, the contactor cl is closed in order to supply the fan V and the resistor R and the device operates in strong mode.

 If the user wishes to remain in this operating mode, he presses the BMA button again and brings it to the stop position.

 The programmer nevertheless continues its rotation while being supplied via c4 until time t3 at which cam 4 opens said contactor c4.

 This creates a position F of a strong operating mode.

 When the user wants to change the operating mode, he presses the BMA button again and brings it to the on position, the motor MP of the programmer is supplied and the cams turn again.

 At time t4, the contactor c4 is closed again.

 At time t5, the device goes into weak operation due to the successive passages of the inverters c3 and c2 in their position b.

 If the user wishes to keep this operating mode, he returns the BMA button to the stop position. The programmer continues its rotation while being supplied via contactor c4 until time t6.

 The programmer then stops due to the opening of c4 which defines a position f for operation in low mode.

 As in the previous example, if the BMA button is again brought to the on position, the device goes into strong operation at time t8.

 The user wishing to have wave effect operation leaves the BMA button in its operating position, which continuously drives the MP motor of the programmer and alternately switches the device into strong and weak operation, with periods of total interruption of operation. .

 In this case also, the user will have to press the BMA button in order to switch it to the stop position when an operation is interrupted when he has finished his bath.

 In the embodiment of FIGS. 3a and 3b, the user has at his disposal a push button BP, that is to say a button which establishes the contact when it is pressed and returns to its open position as soon as it is released.

 The device in this case comprises two programmers P1 and P2 each controlling three contactors and / or reversers respectively.

 In order to facilitate the identification of the contactors and / or reversers controlled by each of said programmers, the references of these include a figure of ten corresponding to the number of the programmer which controls them.

 The contactors cll, c12 and c13 are controlled by the programmer P1 while the contactor c24 and the reversers c25 and c26 are controlled by the programmer P2.

 As in the embodiment of FIG. 2, a contactor cll is arranged in parallel with the push button BP to supply the motor MP1 of the programmer P1.

 The motor MP2 of the second programmer P2 is supplied through one of the contactors c24 or c12.

 When the user wants to use the balneotherapy device, he presses the push button BP, which has the effect of powering the motor MP1 of the programmer Pl.

 At time tl, the contactor cll is closed in order to supply said motor MP1. This time tl is provided very short so that the user does not have to keep the push button BP pressed.

 At time t2, the contactor c13 is closed. This time t2 is close to the time tl, it can also be equal to said time tl, or even precede it. The electrical circuit comprising the fan V and the resistor R is then supplied and the balneotherapy device is in operation. As will be understood later, by the design of this alternative embodiment, the mode of operation of the device at the time of power-up cannot be determined beforehand, the user therefore notices it.

 If it is assumed for the purposes of the description that the cams of the programmer P2 are in the position marked t2 in FIG. 3b, the device will take on its power-up its low operating mode since in this example the two inverters c25 and c26 are in their position b, but the contactor c24 being closed, the cams of the programmer P2 will rotate until said contactor c24 is open at time t3.

 As for the cams of the programmer P1, they rotate until the instant t3 at which the contactor cll is open and stop in this position.

 The programmers are then both stopped in a position F defining a mode of operation of the balneotherapy device, here the strong mode.

If the user does not want this operating mode, he presses the push button again
BP which feeds the motor MP1 of the first programmer.

At time t4, the contactor cll is closed to supply the motor MP1.

 The rotation of the cams of the programmer P1 ensures the closing of the contactor c12 at time t5 and therefore the supply of the programmer P2. The rotation of the cams of said programmer P2 then ensures the closing of the contactor c24 and therefore its supply through c24 while c12 is again open.

 The rotation of the cams of the programmers P1 and P2 continues until time t6 at which the contactors cll and c24 are respectively opened by the action of their control cams 11 and 24.

 At this instant, an operating position of the balneotherapy device is defined in which the inverters c25 and c26 are both in their position b, therefore a weak operating position f.

 If the user presses the BP push button again, cll is closed again, then c24 and c12 are closed by the rotation of the programmers P1 and P2.

 The programmer P1 is rotated until time t7 at which the contactor cll is opened again.

 We see in the figure that at this time t7, c12 is closed. We then reached a position for which the programmer P1 is no longer rotated while c12 being closed, the programmer P2 is continuously rotated by its power supply through this contactor c12.

 We have thus defined a position C for which the device regularly switches from strong operating mode to weak operating mode which creates a wave effect in the bathtub. Advantageously compared to the previous embodiments, this cycle does not include periods during which the device is out of service, which is more pleasant for the user.

 When the user presses again the push button BP, the rotation of the programmer P2 is cut by the opening of the contactor c12, while the programmer P1 continues to rotate while being supplied through cll until it returns at the position tO at which cll and c13 are open again.

 The balneotherapy device is then out of service, but we cannot know the position in which the P2 programmer was stopped.

 As we have seen, this third variant of the invention provides a device by which the user changes the operating mode between strong mode, weak mode, the wave effect cycle and stopping by a single push of the BP push button.

 The variant embodiment of FIGS. 4a and 4b takes up substantially the same circuit as the third variant illustrated in FIGS. 3a and 3b which has just been described.

 The only difference consists in replacing the contactor c13 with an on / off BMA button.

 The user then has the BP push button and the BMA start / stop button.

 The programmer P1 has the same cams 11 and 12 for controlling the contactors cli and c12 as in FIG. 3b but no longer has a cam 13. The programmer P2 is the same as in FIG. 3b.

 With this device, the user presses the BMA on / off button to switch on the circuit comprising the fan V and the resistor R.

 As before, the P2 programmer cams are in the position in which they were when the device was previously taken out of service.

 If we take for example the fact that they are in the position referenced tO, the device will operate first of all in slow operating mode because the reversers c25 and c26 are in their position b, but the contactor c24 being closed, the cams of said programmer P2 will rotate until the instant tl at which the contactor c24 is open. The balneotherapy device will then have its strong mode of operation.

 On the other hand, if the cams of said programmer P2 are, when the device is powered up by the on-off button BMA in an operating position F or f for which c24 is open, the programmer remains in this operating position.

The advantage of this alternative embodiment is therefore that a user preferring one of the operating modes of the balneotherapy device can, by simply switching on the device using the button
BMA, immediately have this preferred operating mode.

 If he wishes to modify the operating mode, he uses, as in the third embodiment, the push button BP to switch to another operating mode by simple pressure and has the choice between strong, weak or wave effect cycle.

 To deactivate the device, simply press the BMA on / off button again to switch it to its off position.

 In the fifth embodiment shown in Figures 5a and 5b, is added to the device shown in Figures 4a and 4b an automatic reset circuit.

 This reset circuit is drawn in broken lines in FIG. 5a.

 It comprises an inverter c13 connected to the open stop position of the on-off button BMA which, in its position b closes a circuit connected to the supply of the motor MP1, and, in its position a, closes a circuit connected to the MP2 motor supply.

 We will not describe the operation of the balneotherapy device which is the same as that described for the fourth variant of FIGS. 4a and 4b.

 As can be seen in FIG. 5b, the inverter c13 is brought into its position b as soon as the motor MP1 of the programmer P1 has rotated, even for a very short time.

Similarly, the contactor c27 is brought to its position b as soon as the motor MP2 of the programmer P2 has rotated, even for a very short time.

 Thus, when the user brings the BMA on / off button back to its stop position, that is to say to its position b, for which he cuts the supply of the circuit comprising the fan V and the resistor R, he ensures l supply of the motor MP1 through the inverter c13 in position b.

 Said motor MP1 then rotates until the cam 13 controls the passage of the inverter c13 in its position a.

 In this position, it is the motor MP2 of the programmer P2 which is in turn supplied through the contactor c27 in its position b as long as the cam 27 does not bring it to position a.

 As we have seen, this automatic reset of the device takes place only if the motor MP1 has been powered during use, that is to say if the user has ordered a mode change of operation during his bath.

 Thus, if the mode in which the device is located at the time of switching on is suitable for the user, the latter does not modify it during his bath and the reset is not triggered when the device returns. BMA in its off position. The user finds the same position for the next bath.

 The reset of the P2 programmer corresponds in the example shown in FIG. 5b to the weak operating mode of the balneotherapy device. One could of course provide this zero in a position corresponding to the strong operating mode by modifying the place of the notch of the cam 27 to bring it in front of the notch A of the cam 24, or in the mode of operation by wave effect cycle by bringing the notch of the cam 13 in correspondence with the tooth B of the cam 12.

 These relative positions of the cams 12 and 13 or the cams 24 and 27 can be modified by a technician according to the wishes of the user.

 In the sixth variant shown in FIGS. 6a and 6b, the resistor R is no longer solely placed in series or in parallel with the fan V, but is used in several different configurations making it possible to modulate the speed of rotation of the fan, therefore the amount of air injected into the tub, and the heating of that air.

 To this end, as shown in FIG. 6a, two inverters c25 and c26 and a breaker c24 are used.

 The inverter c25 establishes in its position a connection with the resistor R and, in its position b a connection with the inverter c26.

 The inverter c26 establishes a link with a point of the resistance R which in position a is located so as to share the value of the resistance at 1/3 towards the inverter c25, and in position b shares the value resistance in two.

 The breaker c24 establishes in its position a link between the end of the resistor located on the side of c25 and the other end of the resistor connected to the power supply, and cuts this link in its position b.

Thus we obtain six overall resistance values arranged in series with the fan according to the states of the inverters and the breaker.
1. c24 in position a, c25 in position a, c26 in one of these positions a and b, the current does not cross resistance R, the fan is then in series with zero resistance. It is preferably provided that c26 is in its position a so that it is in place to allow the establishment of the second value of the overall resistance.

2. c24 in position a, c25 in position b, c26 in position a, a circuit is created comprising on the one hand R / 3 and on the other hand 2R / 3,
3. c24 in position a, c25 in position b, c26 in position b, a circuit is created comprising on the one hand R / 2 and on the other hand R / 2,
4. c24 in position b, c25 in position b, c26 in position b, the current flows through R / 2,
5. c24 in position b, c25 in position b, c26 in position a, the current flows through 2R / 3,
6. c24 in position b, c25 in position a, c26 in position a or in position b (as for the first resistance value, position a is preferred), the current flows through R.

 In this variant embodiment, the user has at his disposal an on-off BMA button, two push buttons BP1 and BP2.

 The BMA allows him to switch on his balneotherapy device, this device comprising a reset circuit, as will be seen later, it will be in position 1 marked on the diagram in FIG. 6b representing the cams of the P2 programmer .

 If this position suits him, he does not touch the push buttons, takes a bath, then presses the BMA again to turn off the device.

 If it decides to change the operating position, it presses the push button BP2, which brings it to its position b and supplies the motor MP2 to the programmer P2. The motor MP2 turns the cams of the programmer P2 as long as the user maintains his pressure on the push button BP2. The balneotherapy device then changes operating mode and passes to mode 2, to mode 3, and so on until the user being satisfied with the adopted mode releases his pressure on the push button BP2.

 If, on the other hand, the user wishes to operate in a wave effect cycle, he presses the push button BP1 which supplies the motor MP1 of the programmer P1. The contactor cll is then closed to supply power to said motor MP1 and allow the user to release BP1.

 The contactor c12 is also closed, which supplies the motor MP2 of the second programmer. The cams of the programmer P1 rotate until the instant tl at which cll is open.

 Note that in this position, the contactor c12 is kept closed, the motor MP2 therefore remains powered and the device regularly switches from one operating mode to another.

 The P2 programmer cams are such that position 7 corresponds to position 5, position 8 to position 4, position 9 to position 3 and position 10 to position 2. This gives position 1 at position 6 a gradual decrease in power and from position 6 at position 10 a gradual rise in power which creates a pleasant balneotherapy cycle.

 If he wishes to return to simple operation, he presses BP1 again, which supplies MP1 and ensures the return of the programmer P1 to the position referenced to for which c12 is open. We then return to the previous operation for which it is necessary to act on BP2 to change the operating mode.

 When the bath is finished, the user presses the BMA on / off button to bring it back to its cut-off position for the circuit comprising the fan and the resistance.

 In doing so, the BMA is in its position b for which it supplies the reset circuit.

 When the user remained in operating mode 1 and did not use the BP1 and BP2, the programmers did not run and nothing happened when the device was stopped.

If the user has only touched BP2 to modify the operating mode, and has not returned to position 1, the contactor c27 is in its position b while the inverter c13 is in its position a, the motor MP2 is then supplied through the BMA, c13 and c27 until the opening of said contactor c27 when the programmer
P2 is again in position 1.

 Finally, if the user had switched to cycle operating mode and had not canceled it, the inverter c13 is in its position b, the motor MP1 is supplied through the BMA and c13 until it has returned to the rest position referenced to. The inverter then resumes its position a for which it fe wave, and it will suffice to press the BMA2 again to keep the current operating mode by making it switch to its off position.

 At the end of use, when the user brings the power-up BMA back to the stop position, the programmer will be reset to the starting position 1 by c27 so as to always have the same operating mode when switching on. voltage.

 The BMA2 may or may not be returned to the stop position. If it is in the stop position, mode 1 of operation will be that of power-up, otherwise, the programmer will rotate and we will go from one mode of operation to another.

 In the variant embodiment of FIGS. 7a and 7b, the balneotherapy device also allows selective control of certain groups of injectors by means of solenoid valves El and E2.

 The electrovalve El is for example capable of interrupting, if it is not supplied, or allowing, if it is supplied, the circulation of air towards the injectors sending the air towards the back of the user, while the solenoid valve E2 controls the injectors located at the user's legs.

 Note that the upper part of the electrical diagram, located above line II, uses the diagram in Figure 6a, this is why Figure 7b only shows the programmers P3 and P4, the programmers P1 and P2 being made as shown in Figure 6b.

 The operation of this upper part of the electrical diagram remains the same as that which has just been described.

The user has at his disposal a push button
BP3 additional by which he chooses to operate the nozzles of the back or those of the legs, or both those of the back and those of the legs or even to cycle from one of these operations to the other.

When the device is powered up by the
BMA, BP3 is open, c31, c32 are open in position a and c33 is also in position a, the MP3 engine is therefore not powered. The programmer P4 is in the rest position A for which c41, c42, c43 and c44 are all in position a. The MP4 motor is not supplied, while El and E2 are supplied.

 There is therefore an operation in which the back and leg injectors are supplied.

When the user wishes to modify this operation, he presses BP3 which supplies the motor
MP3 and closes the contactor c31 which allows to release
BP3.

The relative functioning of the P3 and
P4 is similar to that of the programmers P1 and P2 of the variant of FIGS. 3a and 3b.

When c31 is closed, the programmer cams
P3 rotate and c32 is closed at the instant tl which supplies the engine MP4 of the programmer P4.

 Contactor c32 is closed for a short time corresponding to the time required to close c43, which in turn powers the MP4 motor.

 Programmers P3 and P4 rotate respectively until c31 and c43 are opened again, i.e. in positions t2 and B.

 In this position B of P4, c41 and c42 are in position b and only the solenoid valve E2 is supplied. We therefore operate with only the injectors of the leg area in operation.

 If BP3 is pressed again, a similar operation of the programmers P3 and P4 takes place and P3 takes position t3 while P4 takes position C.

 The reverser c42 is in position a while the breaker c41 is in position b, only the solenoid valve El is then supplied and only the injectors of the back are supplied with air.

 A further press on BP3 brings the programmer P3 to the position t4 in which c32 is kept closed.

The MP4 motor is therefore supplied and the cams of the P4 programmer rotate continuously, which ensures a cycle supplying the legs, then the back, then the legs and the back and so on.

 The operation of the programmers P3 and P4 is completely independent of that of the programmers P1 and P2 described in connection with FIGS. 6a and 6b.

 The user has BMA for powering up the device, BP2 for varying the operating mode of the fan, BP1 for choosing the wave effect cycle by varying the operation of the fan and BP3 for choosing the, or, zones supplied with air with the possibility of a cycle.

 When the device is switched off by returning the BMA to the stop position b, MP1 is first supplied through c13 in position b and returns to its rest position, then c13 having passed to position a MP2 is supplied through c27 until returning to position 1, then c27 having passed into position a, MP3 is fed through c33, then Mp4 is fed through c44 when c33 passes to its position a until it returns to A.

 There is thus a return to zero in cascades of the four programmers in order to always have the same operating mode when the device is powered up.

 It is of course possible to implement a device repeating the electrical diagrams of FIGS. 5a to 7a by not providing for the wiring ensuring resetting to zero.

 Figure 8a shows an alternative embodiment of the lower part of Figure 7a. In this variant, the injectors are grouped into three assemblies watering the legs, the kidneys or the back of the user respectively supplied through the solenoid valves El, E2 and E3.

 As can be seen in the figure, the solenoid valves El, E2 and E3 can be supplied separately from each other from inverters c41, c42 and c43, the passage of which to position a is controlled by the programmer P4, that is to say all together by supplying the valve or valves whose reverser is in position b through the breaker c34 brought into the closed position by the programmer P3.

 In the position referenced 1 of the cams of the programmer P3, the breaker c34 is closed and allows the supply of electric current to the pads b of the inverters c41, c42 and c43. Thus, whatever the position of the cams of the programmer P4, all the solenoid valves El to E3 are supplied either directly from the BMA, or through said breaker c34.

When the user wishes to switch to the operation of a single injection zone, he presses the push button BP3, the MP3 engine of the programmer P3 is supplied and the cams rotate. The contactor c31 closes to supply MP3 and allows the release of
BP3.

 The c34 breaker is open.

 The cams of the P3 programmer rotate to the position referenced 2 for which c31 is open. At this time, the programmer is in any one of positions A to D.

 If it is assumed for the purposes of the description that P4 is in position A in FIG. 8b, the inverter c41 is at a while c42 and c43 are at b. Only the solenoid valve El is supplied and the injectors watering the legs are in operation.

 When he wishes to change the operating zone, the user presses BP3, the cams of the programmer P3 then rotate to position 3. Note that during the transition from position 2 to position 3, contactor c32 is supplied with power to start the programmer P4.

 When the cams of P4 rotate, they close the contactor c44 through which MP4 is supplied. The cams of P4 rotate to the open position B of c44.

 In this position, only the inverter c42 is in position a and only the solenoid valve E2 supplying the injectors in the kidney zone is in operation.

 In the same way, by pressing BP3, the user successively brings P4 into position C for feeding the back.

 If BP3 is pushed again, the programmer P3 comes to its position 5 in which c32 is closed and feeds MP4 continuously. There is then an operating cycle supplying the legs, the kidneys, the back, the kidneys then again the legs and so on. The user thus feels the bubbles sweep him from the feet to the head then from the head to the feet.

 It will be noted in FIG. 8b that the notches of the cams controlling the inverters c41, c42 and c43 are such that the inverter controlling the area to come is tilted in position a before the one during operation switches to position b.

 There is thus a much more pleasant feeling of progressiveness when changing zones, especially noticeable during the operating cycle.

 When the user cuts the supply by bringing the BMA back to the stop position, the successive reset of the programmers takes place as previously described for the programmer P3, while the programmer P4 remains in position. This is why it is not known at the start-up which of the zones will be the first in operation after pressing BP3.

 In a variant not shown in the drawing, it is not possible to use a contactor c44 allowing centering in position of the programmer P4 in each zone. We then have the cam thus freed to control a contactor supplying a fourth zone of the bathtub. It is then necessary, in the same way as in FIG. 6a, to position an additional push button making it possible to control the change of zone. Such an embodiment requires that the user releases this push button as soon as it is in the desired position.

 In another variant and as already mentioned in connection with the embodiment of FIG. 6a, an on / off button can be used to replace the programmer P3, BP3 and the additional push button, which again allows the number of buttons to be manipulated to be reduced again. by the user.

 It is also possible to use the lower part of the electrical diagram of FIG. 7a or the diagram of FIG. 8a, allowing the control of solenoid valves supplying groups of nozzles chosen in the bathtub with any of the diagrams la to 5a whether or not to provide the wiring for the reset as appropriate.

 As it has been understood on reading the above description, the use according to the present invention of electro-mechanical means makes it possible to propose sophisticated balneotherapy devices of a cost much lower than the devices usually used operating with very expensive electronics.

 Such a device according to the invention also has the advantages that such electromechanical elements are robust and are moreover repairable if, however, there is a breakdown.

 The programmers used have a maximum of four cams in order to be common and robust elements, it is not going beyond the scope of the present invention by implementing programmers carrying more cams.

 Although all of the foregoing description has been made with balneotherapy devices with air injectors set in motion by a fan, the present invention also relates to devices with water injectors set in motion by a pump.

 The devices described are indeed able to control an engine, a fan or a pump will be chosen depending on the fluid to be injected.

Claims (12)

 1. - Balneotherapy device for baths comprising water injectors and / or an air / water mixture, the fluid being set in motion by a fan or a pump, characterized in that it comprises a control button and a programmer carrying control cams controlling the position of switches and driven in rotation by a motor (MP) and allows the user to choose between two operating speeds and a cycle ensuring a change from one to the other of these speeds.  2. - Device according to claim 1, characterized in that the control button is an on-off button (BMA).  3. - Device according to claim 2, characterized in that the on off button (BMA) is a button controlling, by means of a pneumatic control, a pressure switch locking in its on or off positions, changing position at each actuation of the control button and keeping the position taken until said button is not pressed again.  4. - Device according to any one of claims 1 to 3, characterized in that the different operating speeds are created by varying the overall resistance of a circuit comprising said fan (V) (or said pump) and a resistance (R).  5. - Device according to claim 4, characterized in that the overall resistance is modified by arranging said fan (or pump) and resistance either in parallel or in series.  6. Device according to any one of claims 1 to 5, characterized in that the programmer comprises an additional cam ensuring an automatic positioning of said programmer in each zone of strong or weak operation.  7. - Device according to claim 1, characterized in that the control button is push button (BP) and in that it comprises a second programmer (P2).  8. - Device according to claim 7, characterized in that it also comprises an on / off button (BMA) by which the circuit comprising the fan (V) (or the pump) and the resistor R under voltage.  9. - Device according to any one of claims 4 or 6 to 8, characterized in that the overall resistance of the circuit comprising said fan (V) (or said pump) and the resistance (R) is modified using the resistance by parts or by putting two parts of said resistor in parallel in order to obtain more than two operating modes.  10. - Device according to any one of claims 7 to 9, characterized in that it comprises an additional push button, one (BP2) of said push buttons allowing the choice of operating mode while the other (BP1 ) allows the choice of the wave effect cycle passing regularly from one operating mode to another.  11. - Device according to any one of the preceding claims, characterized in that it also comprises two programmers (P3 and P4) as well as a push button (BP3) in order to allow the choice among groups of nozzles.  12. - Device according to any one of claims 7 to 11, characterized in that it comprises an automatic reset circuit for the programmers.