ES2612696T3 - Home appliance equipped with a spray device comprising a diffuser nozzle of a sprayed liquid jet - Google Patents

Abstract

Household appliance (100) for domestic use including a spraying device (1; 201) comprising a nozzle (2; 202) diffuser of a sprayed liquid jet, said nozzle (2; 202) being fed with pressurized liquid by means of a feeding circuit related to a pump (105), characterized in that said nozzle feeding circuit (2; 202) includes a mobile element (3; 203) between a resting position, wherein said mobile element (3; 203) prevents the flow of liquid in the direction of the nozzle (2; 202), and an operating position, in which the mobile element (3; 203) allows the circulation of liquid in the direction of the nozzle (2 ; 202), the movable element (3; 203) being returned to the rest position by means of recovery (31; 231), said movable element being constituted by a plunger (3; 203) having an adapted shape so that the displacement of said plunger (3; 203) of the pos Operating position towards the rest position generates a depression that causes the aspiration of a volume of liquid, located inside the nozzle (2; 202), into the supply circuit, and because said pump (105) is electric and its start-up is governed by the movement of the piston (3; 203) from the resting position to the operating position, being Start the pump (105) before the piston (3; 203) reaches the operating position.

Description

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DESCRIPTION

Electric appliance equipped with a spray device comprising a diffuser nozzle of a liquid spray jet

The present invention relates to a spraying device comprising a diffuser nozzle of a sprayed liquid jet, the nozzle being fed with pressurized liquid by means of a feed circuit related to a pump and, more particularly, refers to a spraying device in which the nozzle feed circuit includes a mobile element between a resting position, in which the mobile element prevents the flow of liquid in the direction of the nozzle, and an operating position, in which The mobile element allows the circulation of liquid in the direction of the nozzle, the mobile element being returned to the resting position by means of recovery.

It is known from US 3829993, which describes a domestic appliance for use in the home according to the preamble of claim 1, an iron that includes a spraying device comprising a nozzle fed with pressurized water by means of a pump, the nozzle including a closing disc between a resting position, in which the closing disc prevents the flow of water in the direction of the nozzle, and an operating position, in which the closing disc allows the circulation of water in direction to the nozzle, the closing disc being returned to the resting position by a spring and being moved to the operating position by the pressure of the water applied against the closing disc when the pump is operated.

Such a spraying device has the advantage of having a closing disk that stops interrupting the circulation of water in the direction of the nozzle when the pump is not activated, in order to avoid that the water inside the nozzle feeding circuit keep flowing by gravity through the nozzle. However, such a spraying device still includes a volume of water located inside the nozzle body, downstream of the closure disk, which causes the formation of a water meniscus at the outlet of the nozzle. However, the presence of residual water in correspondence with the outlet hole of the nozzle presents the inconvenience of leading to the nozzle sealing due to the deposits of lime that are made in the drying of this drop.

In addition, the meniscus of water at the outlet of the nozzle comes to disturb the release of the first droplets of water diffused by the nozzle when the pump is operated, and has a tendency to form some larger drops of water, which have the disadvantage of staining delicate fabrics, such as silk, and being difficult to dry by means of the soleplate of the iron when such a spraying device is used in an ironing apparatus.

Document GB 2271624 describes a spraying device comprising a diffuser nozzle of a liquid spray jet, said nozzle being fed with pressurized liquid by means of a feed circuit related to a pump, said nozzle feeding circuit including a mobile element between a resting position, in which said mobile element prevents the flow of liquid in the direction of the nozzle, and an operating position, in which the mobile element allows the circulation of liquid in the direction of the nozzle, being returned the mobile element to the resting position by means of recovery, said mobile element being constituted by a plunger that has an adapted form so that the movement of said plunger from the operating position towards the resting position generates a depression that causes the aspiration of a volume of liquid, located inside the nozzle, into the food circuit Mint

Ace! It is therefore an objective of the present invention to propose a spraying device that remedies the aforementioned drawbacks.

For this purpose, the object of the invention is a domestic appliance according to claim 1.

Such feature has the advantage of emptying the nozzle and, especially, its outlet orifice, of all liquid, which allows to prevent the nozzle from clogging rapidly due to the formation of lime, and preventing the formation of a meniscus in correspondence with its orifice output

According to another feature of the apparatus according to the invention, the movement of the plunger from the operating position to the rest position includes a first phase, in which the displacement of the plunger causes the sudden interruption of the liquid feed to the nozzle and , then, a second phase, in which the displacement of the embolus generates a depression that causes the aspiration of the volume of liquid from the inside of the nozzle.

According to another feature of the apparatus according to the invention, the feeding circuit includes a captation cavity of the volume of aspirated liquid, which has a form adapted to retain the aspirated liquid and prevent the latter from being discharged by gravity through the nozzle .

Such a feature makes it possible to safely store the aspirated liquid by returning the plunger.

According to another feature of the apparatus according to the invention, the supply circuit includes a conduit.

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terminal that relates the collection cavity with the nozzle, the captation cavity presenting a volume greater than the volume of residual liquid that may be contained in the nozzle and the terminal duct, causing the movement of the plunger towards the resting position the aspiration of the liquid contained in the nozzle and the terminal duct, for transfer into the collection cavity.

According to another feature of the apparatus according to the invention, the plunger is mounted with the ability to move movement within a housing.

According to another feature of the invention, the collection cavity is integrated in the housing and corresponds to a part of the volume of the housing.

Such feature has the advantage of allowing the achievement of a compact construction of the spraying device.

According to another feature of the apparatus according to the invention, the housing includes at least one annular seal that comes into contact with the periphery of the plunger, the annular seal determining a tight barrier between a feed chamber fed by the pump and the nozzle.

According to another feature of the apparatus according to the invention, the plunger includes an external surface provided with recesses, the recesses facing said annular joint when the plunger is in the operating position, to allow the circulation of liquid in the direction of the nozzle.

According to another feature of the apparatus according to the invention, the feed chamber is fed with liquid from the pump by means of an intake duct that runs laterally into the feed chamber.

According to another feature of the apparatus according to the invention, the plunger is moved from the resting position to the operating position by pressing a control organ.

According to another feature of the apparatus according to the invention, the recovery means comprise a spring that generates a mechanical stress on the plunger and / or a pressurized liquid that exerts a recovery effort on the plunger.

According to another feature of the apparatus according to the invention, the plunger is moved from the resting position to the operating position by means of a pivoting mounting control lever.

According to another feature of the apparatus according to the invention, the pump is electric and its start-up is governed by moving the plunger from the resting position to the operating position.

According to another feature of the apparatus according to the invention, the pump is started before the plunger reaches the operating position.

Such a feature allows the nozzle feed circuit to be put under pressure before the plunger occupies the operating position that allows liquid circulation to the nozzle, which has the advantage of allowing a powerful and instant spray jet to be obtained. from the first moments of diffusion of liquid droplets through the nozzle, thus limiting! the risk of formation of droplets of too thick size.

In accordance with another feature of the invention, the appliance includes a heating sole for ironing.

The purposes, aspects and advantages of the present invention will be better understood in response to the description of particular embodiments of the invention presented as non-limiting examples given below, referring to the accompanying drawings, in which :

Figure 1 is a schematic view of an iron equipped with a spraying device according to the invention;

Figure 2 is a front view of the spray device with which the iron of Figure 1 is equipped;

Figure 3 is a sectional view of the spraying device according to line III-III of Figure 2;

Figure 4 is an exploded perspective view of the spraying device with which the plate of Figure 1 is equipped, according to a first embodiment;

Figures 5 and 6 represent a longitudinal sectional view, according to line V-V of Figure 2, of the spraying device of Figure 4 when the spraying device is, respectively, stopped and in operation;

Figures 7 and 8 represent a sectional view according to line VII-VII of Figure 2 of the spraying device of Figure 4 when the spraying device is, respectively, stopped and in operation; Y

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Figure 9 presents a longitudinal sectional view, similar to Figure 5, of the spraying device according to a variant embodiment.

Only the elements necessary for the understanding of the invention have been represented. To facilitate the reading of the drawings, the same elements of the same references have been provided through the different figures.

FIG. 1 schematically depicts a plate 100 which conventionally includes a heating sole 101 topped by a box 102 comprising a gripping handle 103 and a spraying device 1, the spraying device 1 including a removable nozzle 2, arranged on the front face of the plate 100, and an intake duct 13, as best seen in Figure 2, connected by a pipe 104 to an electric pump 105, in turn related to a tank 106 integrated in the box 102 of the plate and advantageously intended to receive tap water.

The box 102 of the plate also includes a control button 107, arranged in front of the handle 103 which, when actuated, allows the spraying device 1 to start, in order to obtain the emission of a spray of droplets fine water, preferably of a diameter less than 500 pm, at the outlet of the nozzle 2.

In accordance with Figures 4 and 5, the spraying device 1 includes a main body 10 that accommodates a feeding circuit of the nozzle 2, the main body 10 comprising a stylized front end 10A, to which the removably fixed nozzle 2, and a rear end 10B, more panzudo, which receives a joystick 4 pivotally mounted around an axis 40, disposed within a recess 11 of the main body 10, the joystick 4 comprising a cam 41 taking support against a roller 51 rotatably mounted on a pusher 5, the pusher 5 being able to carry out a translation movement within a glutton box 6 fixed by screws on the back of the main body 10.

The roller 51 is pivotally mounted on an axis 50 which can perform a translational movement within a groove 60 of the glutton box 6, between a resting position, illustrated in Figures 5 and 7, in which the pusher 5 occupies a delayed position, with the axis 50 butt against a rear end of the groove 60, and an operating position, illustrated in figures 6 and 8, in which the pusher 5 is in an advanced position, with the axis next to a front end of the groove 60, the pusher 5 comprising a radial arm 52 which passes through a throat 61 of the glutton box 6 and comprising an actuation head 53 which happens to act on a switch 7 of which the body is carrier main 10, this switch 7 which is electrically connected to a power circuit of the pump 105.

In accordance with FIG. 3, the drive head 53 includes a cavity in which a finger 54 is disposed to make contact with a button 70 of the switch 7 when the pusher 5 moves from the rest position to the position of operation, the finger 54 being mounted with the ability to move inside the cavity, against a spring 55, so that the finger 54 will actuate the switch button 70 and trigger the start-up of the pump 105 in a first part of the pusher stroke 5, and that the movement of the pusher 5 towards the operating position can be continued after the actuation of the switch 5, thanks to the penetration of the finger 54 into the cavity, against the spring 55.

As can be seen in Figure 5, the pusher 5 includes a cylindrical front part, which is fixed by a screw 56 to the rear end of a plunger 3 slidably mounted in a cylindrical housing 12 of the main body 10, this housing 12 running parallel to the longitudinal direction of the nozzle 2 and including a rear end closed tightly by a membrane 9 disposed between the pusher 5 and the plunger 3, this membrane 9 being deformable and having a perimeter flange 90 disposed interspersed between an immobilization flange 15 which rests on the main body 10 and the glutton box 6.

Preferably, the nozzle 2 includes a circular insert 20 set and is screwed into the stylized front end 10A of the main body 10, so that the nozzle 2 can be easily disassembled for cleaning, without risk of loss of the circular insert 20. The nozzle 2 is fed with liquid from the reservoir 106 by a feed circuit comprising a terminal conduit 14 arbitrated at the stylized front end 10A of the main body 10, this terminal conduit 14 running on the axis of the nozzle 2 and leading into the cusp of the previous part of the accommodation 12.

In accordance with FIG. 7, the housing 12 is fed with liquid from the reservoir 106 through the intake duct 13, the latter leading radially into the housing 12, in correspondence with a feeding chamber 8 comprising a distributor ring 80 that runs between a first and a second ring seal 16, 17, comprising a lip 16A, 17A that takes support on the outer surface of the plunger 3, including the distributor ring 80 an external throat 81 and four radial holes 82, distributed at 90 ° from each other, the radial holes 82 being through the distributor ring 80 and allowing the circulation of the liquid from the intake duct 13 towards the periphery of the plunger 3.

The two gaskets 16, 17 and the distributor ring 80 are advantageously disposed within a

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cavity of the main body 10 which has an internal diameter greater than that of the housing 12, so that the two sealing joints 16, 17 are immobilized by being arranged interspersed between a flange of the main body 10 and the immobilization flange 15 in which then take support, successively, the flange 90 of the membrane 9 and the glutton box 6.

In accordance with Figures 4 and 5, the pistol 3 includes four recesses 30, arranged in the same radial plane and distributed at 90 ° to each other on the external surface of the plunger 3, the embolus 3 being mobile with the ability to transfer in a stroke between a resting position and an operating position, the plunger 3 being returned to the resting position by a recovery spring 31 arranged, advantageously, at a hollow front end of the plunger 3 and taking support on a wall 19 in the previous part of the accommodation 12.

In the resting position, illustrated in Figures 5 and 7, the recesses 30 are interposed between the lips 16A, 17A of both sealing joints 16, 17, so that the liquid present in the feeding chamber 8 cannot flow in the direction of the nozzle 2.

In the operating position, illustrated in Figures 6 and 8, the recesses 30 present on the surface of the plunger 3 face the lip 16A of the first seal 16 and allow the passage of a liquid flow in the direction of the nozzle 2, passing through an interstitium 14A present between the plunger 3 and the main body 10, in prolongation of the terminal conduit 14.

The operation of the spray device is now described.

In an ironing session, when the user wishes to operate the spraying device 1 to moisten the garments, he presses the button 107 located on the front of the handle 103, which causes the pivoting of the joystick 4 and of the cam 41, taking support of the latter on roller 51 and pushing back pusher 5, ace! as the pin 3 to which it is associated, towards the operating position illustrated in Figures 6 and 8.

In this step of pushing the pusher 5 towards the operating position, in a first part of the pusher stroke 5, the finger 54 carried by the actuating head 53 starts to actuate the button 70 of the switch 7, which causes the setting start-up of the pump 105 and the pressurization of the water present in the feed chamber 8, before the pin 3 has reached the operating position.

The movement of the pusher 5 is then continued in a second part of the stroke, in which the movement of the pusher 5 is accompanied by a progressive penetration of the finger 54 in the actuator head 53, against the recovery spring 55, which it allows the pusher 5 and the plunger 3 to reach the operating position, at the same time that the switch 7 is operated.

When this operating position is reached by the plunger 3, the recesses 30 present on the surface of the plunger 3 face the lip 16A of the first seal 16 and allow the sudden passage of the water under pressure beyond the first seal sealing 16, so that the water from the feed chamber 8 is sent to the nozzle 2, passing through the gap 14A that runs between the plug 3 and the main body 10 and then through the terminal conduit 14.

The water that reaches the nozzle 2 at a pressure of the order of 3.5 bar is instantly sprayed into fine droplets of the order of 100 to 200 pm in diameter, which allows the garments to be moistened without the risk of droplet formation of a diameter greater than 500 pm at the exit of the nozzle 2.

When the user wishes to interrupt the spraying of water by the nozzle 2, he releases the control button 107 which, then, stops exerting pressure on the control lever 4, so that the latter is pushed back up by the displacement of the pusher 5 and of the plunger 3 to the resting position, illustrated in figures 5 and 7, by combined effect of the stresses generated by the recovery spring 31 and by the water pressure exerted on the plunger 3, the latter being sized for take care of an automatic return of the plunger to the resting position, without generating, however, handling efforts of the control button 107 too high, for greater comfort of use.

In this return of the plunger 3 towards the rest position, the recesses 30 are quickly offset with respect to the lip 16A of the first seal 16, so that, after having traveled a first part of the stroke of the plunger 3 towards the resting position, the tightness is restored throughout the contour of the plunger 3, which causes the sudden interruption of the water supply in the direction of the nozzle 2, and the plunger 3 then continues its stroke, sucking the water located downstream of the embolus 3, as a result of the depression generated by the displacement of the plunger 3 inside the housing 12.

The residual water that is inside the nozzle 2 and inside the terminal duct 14 is then aspirated to the front part of the housing 12, the latter determining a collection cavity 12A of the residual water, in which the water is stored, without risk that it flows through the nozzle 2. Indeed, the collection cavity 12A has an adapted way to retain the aspirated water and prevent it from being discharged into

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direction to the nozzle 2, the volume of the collection cavity 12A being greater than the volume of wastewater contained in the nozzle 2 and the terminal conduit 14, such that the water level n inside the collection chamber 12A, after Aspiration of the volume of wastewater remains located below the junction point of the terminal conduit 14 with the housing 12, as illustrated in Figure 5.

In parallel, the return of the pusher 5 to the rest position is also accompanied by the recoil of the actuating finger 54, which then ceases to act on the button 70 of the switch 7, so that the operation of the pump is interrupted 105.

In this way, a very effective spraying device is obtained, with which the risk of formation is reduced, at the exit of the nozzle, of a visible drop, of a diameter greater than 500 pm, either at the start-up of the spraying device, thanks to the absence of stagnant water meniscus at the outlet of the nozzle and the sudden influx of pressurized water to the nozzle, or at the stop of the spraying device, thanks to the aspiration of the volume of water residual located inside the nozzle to a feed cavity of the feeding circuit, in the return of the plunger to the rest position.

Therefore, such a spraying device has the advantage of limiting the risk of formation of stains on the garments by spilling a drop on the latter and, likewise, it allows reducing the problems of calcareous incrustations leading to the sealing of the nozzle, and that there is no standing water in correspondence with the latter.

In addition, such a spraying device has the advantage of not requiring a non-return valve on the nozzle to limit the flow of water by gravity, which simplifies the construction of the nozzle and allows obtaining a nozzle that can be disassembled and easily reassembled for cleaning.

Figure 9 illustrates a spraying device 201 according to a variant of the first embodiment described above, in which the second annular seal which comes into contact with the plunger has been removed.

In accordance with this figure, the spraying device 201 according to this variant embodiment includes a main body 210 that includes a front end provided with a nozzle 202 and a rear end comprising, in pivotal assembly, a control lever 204, comprising the joystick 204 a cam 241 that takes support against a roller 251 rotatably mounted on a pusher 205 with the possibility of carrying out a translation movement within a glutton box 206.

The pusher 205 includes an anterior part 205A which is fixed by a screw 256 to the rear end of a plunger 203 slidably mounted in a cylindrical housing 212 of the main body 210, this housing 212 including a rear end sealed to a seal by a membrane 209 disposed between the front part of the pusher 205 and the plunger 203. In a manner similar to the first embodiment, the housing 212 is supplied with liquid at a pressure of the order of 3.5 bars by means of an intake duct, not visible in the figure, radially leading into the housing, in correspondence with a feeding chamber 208 comprising a distributor ring 280.

More particularly, according to this variant embodiment, the distributor ring 280 runs between an annular seal 216 and the membrane 209, the seal 216 and the distributor ring 280 being arranged within a cavity of the main body 210 which It has a larger diameter than that of the housing 212, so that the sealing gasket 216 and the distributor ring 280 are immobilized as they are arranged interspersed between a flange of the main body 210 and a perimeter flange 290 of the membrane 209 held compressed by a box of glutton 206 of the pusher 205.

Preferably, the embolus 203 includes four recesses 230, distributed 90 ° apart from each other on the external surface of the embolus 203, the plunger 203 being mobile with the ability to move in a stroke between a rest position, illustrated in the figure 9, in which the recesses 230 are outdated in relation to the seal 216, and an operating position, not illustrated, in which the recesses 230 face the seal 216 and allow the passage of a liquid flow in the direction of the nozzle 202, the plunger 203 being returned to the resting position by a recovery force that, derived directly from the water pressure, of the order of 3.5 bar, is exerted on the membrane 209 in the interior of the feeding chamber 208, with the possibility of completing this recovery force, advantageously, although not necessarily, with a recovery spring 231 that exerts on the embolus 203 a mechanical recovery effort.

The operation of the spraying device according to this variant embodiment is still similar to the operation of the spraying device described with respect to the first embodiment, so it will not be described in greater detail.

Such a variant has the advantage of being less expensive in its realization than the spraying device according to the first embodiment, thanks to the suppression of the second sealing gasket, presenting this

suppression of the second sealing gasket, also, the advantage of reducing frictional stresses on the plunger and, thus, of allowing easier operation of the joystick. Such an embodiment variant also has the advantage of being able to operate without using a plunger recovery spring to the resting position, the plunger being returned by the mere hydraulic pressure exerted on the membrane, so that the pressure is reduced even more. spraying device cost.

Of course, the invention is by no means limited to the embodiments described and illustrated, which have only been given by way of example. Modifications are no longer possible, especially from the point of view of the constitution of the various elements or by substitution by technically equivalent ones, without thereby leaving the scope of protection of the invention, defined by the appended claims.

10 Thus, in another embodiment, not shown, the spraying device may equip an iron

separate steam generator, in which the tank and the pump are not integrated in the iron, but instead go

arranged inside a receiver base of the steam generator, the water being transmitted to the iron by means of a

cord that relates the iron to the base.

Thus, the spraying device according to the invention can be used in different types of devices.

15 household appliances and can be used, for example, in a fan to cool or humidify the

air sent by the fan, in a hair dryer to moisten the hair before straightening or curling or for

diffusion of aromas in an oven or steam cooker.

Claims (12)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 1. Domestic appliance (100) for domestic use which includes a spraying device (1; 201) comprising a nozzle (2; 202) diffuser of a sprayed liquid jet, said nozzle being fed (2; 202) with pressurized liquid by means of a feed circuit related to a pump (105), characterized in that said nozzle feed circuit (2; 202) includes a mobile element (3; 203) between a resting position , wherein said mobile element (3; 203) prevents the flow of liquid in the direction of the nozzle (2; 202), and an operating position, in which the mobile element (3; 203) allows the circulation of liquid in the direction of the nozzle (2; 202), the mobile element (3; 203) being returned to the resting position by means of recovery (31; 231), said mobile element being constituted by a plunger (3; 203) which has an adapted way so that the movement of said plunger (3; 203) from the operating position towards the rest position generates a depression that causes the aspiration of a volume of liquid, located inside the nozzle (2; 202) , into the supply circuit, and why said pump (105) is electric and its start-up is governed in the displacement of the embolus (3; 203) from the resting position to the operating position, the pump (105) being started before the plunger (3; 203) reaches the operating position. 2. The appliance (100) according to claim 1, characterized in that the movement of the plunger (3; 203) from the operating position towards the rest position includes a first phase, in which the displacement of the plunger (3; 203 ) causes the sudden interruption of the liquid feed to the nozzle (2; 202) and, then, a second phase, in which the displacement of the embolus (3; 203) generates a depression that causes the aspiration of the liquid volume of the inside of the nozzle (2; 202). 3. Electro-household appliance (100) according to any one of claims 1 to 2, characterized in that the supply circuit includes a captation cavity (12A) of said volume of aspirated liquid, which has a form adapted to retain the aspirated liquid e prevent the latter from being discharged by gravity through the nozzle (2). 4. The appliance (100) according to claim 3, characterized in that the supply circuit includes a terminal conduit (14) that relates said collection cavity (12A) to the nozzle (2) and why the collection cavity (12A ) has a volume greater than the volume of residual liquid that may be contained in the nozzle (2) and the terminal duct (14), causing the movement of the plunger (3) towards the resting position the aspiration of the liquid contained in the nozzle ( 2) and the terminal duct (14) for transfer into the collection cavity (12A). 5. Electrical appliance (100) according to any one of claims 1 to 4, characterized in that the plunger (3; 203) is mounted with the ability to move movement inside a housing (12; 212). 6. Appliances (100) according to claim 5, characterized in that the collection cavity (12A) is integrated into the housing (12) and corresponds to a part of the volume of the housing (12). 7. An appliance (100) according to any one of claims 5 to 6, characterized in that the housing (12; 212) includes at least one ring seal (16; 216) that comes into contact with the periphery of the plunger (3; 203), said ring seal (16; 216) determining a tight barrier between a feed chamber (8; 208) fed by the pump (105) and the nozzle (2; 202). 8. An appliance (100) according to claim 7, characterized in that the plunger (3; 203) includes an external surface provided with recesses (30; 230), said recesses (30; 230) being faced with said annular joint (16 ; 216) when the plunger (3; 203) is in the operating position, to allow the circulation of liquid in the direction of the nozzle (2; 202). 9. The appliance (100) according to any one of claims 7 to 8, characterized in that the feed chamber (8) is fed with liquid from the pump (105) by means of an intake duct (13) that draws laterally into the feeding chamber (8). 10. The appliance (100) according to any one of claims 1 to 9, characterized in that the plunger (3) is moved from the resting position to the operating position when a control organ (107) is pressed. 11. The appliance (100) according to any one of claims 1 to 10, characterized in that the recovery means comprise a spring (31; 231) that generates a mechanical stress on the plunger (3; 203) and / or a pressurized liquid that exerts on the embolus (3; 203) a recovery effort. 12. An appliance (100) according to any one of claims 1 to 11, characterized in that it includes a heating sole (101) for ironing.