FIELD OF THE INVENTION
[0001] The invention relates to a garment steamer, and in particular to a garment steamer
having a steamer head comprising a housing made of plastic material, with a steam
generator being contained within the housing.
[0002] The invention may be used in the field of garment care.
BACKGROUND OF THE INVENTION
[0003] Various types of garment steamer are known for steaming garments to remove creases
through the use of heat and moisture provided by steam. Garment steamers typically
comprise a water tank for storing water, a steam generator for generating steam from
the water supplied thereto from the water tank, and a treatment plate (also referred
to as a soleplate).
[0004] One type of garment steamer is a handheld garment steamer, in which the steam generator,
the water tank, and the treatment plate are integrated into a single portable hand
unit.
[0005] Over the years, the power rating of garment steamers, and in particular handheld
garment steamers, has increased in order to increase the amount of steam generated
and to improve condensation performance so as to minimise water spitting during steaming.
With higher power ratings, the steam generator temperature tends to increase.
[0006] Moreover, in the case of handheld garment steamers the compactness of the design
intended for better portability may mean that there is less space between the steam
generator and the outer housing, such as plastic housing, in which the steam generator
is contained. This reduction in space in combination with the above-mentioned higher
steam generator temperature may risk that the temperature of the external surface
of the outer housing becomes unacceptably high, for instance exceeding the allowable
temperature increase target of 60 K stated in standard IEC60335-1 clause 11.8 and
IEC60335-2-85, clause 11.4, particularly when the garment steamer is used for prolonged
duration.
[0007] One conventional solution for reducing the temperature of the external surface of
the outer housing is to provide sufficient air space between the steam generator and
the outer housing. This means that heat from the steam generator can be transferred
to the internal air chamber formed between the steam generator and the outer housing
by convection. However, a drawback of such a solution is that a relatively large steamer
head containing the steam generator is required, which is detrimental to the portability
of the garment steamer.
[0008] Another possible solution has been used which involves arranging insulation material,
for example sponge, foam, etc., onto the steam generator. However, this solution can
typically only be implemented on one side of the steam generator because the other
side tends to be fully occupied by temperature control components, such as a thermostat
and fuse. A further drawback of this solution is that the insulation material can
often retain water due to its moisture absorbent properties. Over a prolonged period
of use of the garment steamer, such water absorption by the insulation material can
risk that the insulation material becomes detached from the steam generator. This
can pose a safety risk due to the wet insulation material approaching internal live
electrical parts in the vicinity of the steam generator.
OBJECT AND SUMMARY OF THE INVENTION
[0009] It is an object of the invention to propose a garment steamer that avoids or mitigates
the above-mentioned problems.
[0010] The invention is defined by the independent claims. The dependent claims define advantageous
embodiments.
[0011] To this end, the garment steamer according to the invention comprises
- a steamer head comprising a housing made of plastic material,
- a steam generator for generating steam, the steam generator being contained within
the housing, and
- at least one metal layer being arranged between the steam generator and the housing.
[0012] The housing can be regarded as being an outer housing. An external surface of the
housing is therefore contactable by a user operating the garment care device.
[0013] The steam generator is contained within, in other words is enclosed by, the housing.
The at least one metal layer can act as a heat spreader by absorbing heat from the
steam generator and spreading it over a surface area of the at least one metal layer.
The at least one metal layer may therefore assist to minimise or prevent hot spots
on the housing caused by the heat generated by the steam generator.
[0014] The at least one metal layer can also have a heat insulation function, since the
housing may receive less heat compared to the scenario in which the at least one metal
layer is not included in the garment steamer.
[0015] By managing heat transfer to the housing in these ways, the at least one metal layer
can improve user comfort and safety when steaming garments using the garment steamer.
[0016] Preferably, the at least one metal layer is spaced from the steam generator so to
form a first air gap between the steam generator and the at least one metal layer.
[0017] Such a first air gap between the steam generator and the at least one metal layer
can act as an insulation layer to assist in lowering the temperature of the housing.
[0018] The first air gap is preferably at least 2 mm. Such a minimum spacing of 2 mm may
assist to provide sufficient insulation via the first air gap between the at least
one metal layer and the steam generator.
[0019] Preferably, the at least one metal layer is spaced from the housing to form a second
air gap between the at least one metal layer and the housing.
[0020] Such a second air gap between the metal layer(s) and the housing can act as an insulation
layer to assist in lowering the temperature of the housing.
[0021] The second air gap is preferably at least 0.5 mm. Such a minimum spacing of 0.5 mm
may assist to provide sufficient insulation via the second air gap between the at
least one metal layer and the housing.
[0022] In embodiments in which both the first air gap and the second air gap are provided,
the first air gap is preferably wider than the second air gap. This may assist to
manage heat transfer from the steam generator to the housing such as to minimise hot
spots on the housing.
[0023] In some embodiments, the at least one metal layer comprises a first metal layer extending
over a top part of the steam generator, and a second metal layer extending over a
bottom part of the steam generator.
[0024] For example, the top part of the steam generator corresponds to a cover of the steam
generator.
[0025] Preferably, the first metal layer and the second metal layer each have a thickness
being at least 0.2 mm.
[0026] Such a minimum thickness may assist each of the metal layers to spread the heat generated
by the steam generator, whilst also ensuring that each of the metal layers is sufficiently
rigid and robust.
[0027] In some embodiments, the first metal layer is separate from the second metal layer.
[0028] The first metal layer being separate from, in other words not connected to, the second
metal layer, means that the first and second metal layers do not form an enclosure
around the steam generator. In other words, the first and second metal layers do not
form a closed sheath or hollow shell around the steam generator. The first metal layer
being separate from the second metal layer may assist with dissipating the heat of
the steam generator within the steamer head.
[0029] An outer periphery of the first metal layer is preferably spaced apart from an opposing
outer periphery of the second metal layer by a distance with a value in the range
[1;2] cm.
[0030] Each of the at least one metal layer can be formed of a metal or metal alloy.
[0031] Preferably, the at least one metal layer is made of aluminium. The relatively high
thermal conductivity of aluminium can make for enhanced heat spreading.
[0032] In some embodiments, the at least one metal layer comprises a polished reflective
surface, with the polished reflective surface facing the steam generator.
[0033] Such a polished reflective surface can assist to reflect heat back towards the steam
generator, so away from the housing.
[0034] Preferably, the at least one metal layer is fastened to the housing at discrete fastening
points.
[0035] Such discrete fastening points may assist to minimise direct heat transfer from the
at least one metal layer to the housing.
[0036] The steam generator is preferably made of casted metal alloy.
[0037] Preferably, the garment steamer is a handheld garment steamer.
[0038] For example, the steam generator, a water tank for storing water for supplying to
the steam generator, and a treatment plate in which at least one steam outlet is provided
for releasing the steam are integrated into a single portable hand unit when the garment
steamer is such a handheld garment steamer.
[0039] The at least one metal layer can be particularly advantageous when the garment steamer
is a handheld garment steamer because the at least one metal layer can provide a way
of minimising temperature increases of the housing while retaining a compact steamer
head design which enhances portability.
[0040] Detailed explanations and other aspects of the invention will be given below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Particular aspects of the invention will now be explained with reference to the embodiments
described hereinafter and considered in connection with the accompanying drawings,
in which identical parts or sub-steps are designated in the same manner:
Fig.1 provides an exploded view of a garment steamer according to an example,
Fig.2 provides a cutaway view of a steamer head of the garment steamer shown in Fig.
1,
Fig.3 provides a perspective interior view of the steamer head shown in Fig.2,
Fig.4 provides a cross-sectional view of a portion of the steamer head shown in Figs.
1 to 3, with an inset providing an enlarged view showing a first air gap between a
first metal layer and a steam generator, and a second air gap between the first metal
layer and a housing of the steamer head,
Fig.5 provides a cross-sectional view of another portion of the steamer head shown
in Figs. 1 to 3, with an inset providing an enlarged view of the second air gap,
Fig.6 provides a view of a second metal layer included in the portion shown in Fig.5
fastened to part of the housing, with an inset providing an enlarged view of part
of the fastening, and
Fig.7 provides a view of the first metal layer shown in Fig.4 fastened to another
part of the housing.
DETAILED DESCRIPTION OF THE INVENTION
[0042] Fig.1 depicts a garment steamer 100 according to an example. The garment steamer
100 has a steamer head comprising a housing H. The garment steamer 100 comprises a
steam generator 106 for generating steam. The steam generator 106 is contained within
the housing H. The steam generator 106 is contained within. In other words, the steam
generator 106 is enclosed by the housing H.
[0043] The housing H can be regarded as being an outer housing. An external surface of the
housing H is therefore contactable by a user operating the garment care device 100.
[0044] The housing H is made of plastic material. Such a plastic housing H may assist the
steamer head to be relatively lightweight, and thus enhance the manoeuvrability of
the garment steamer 100.
[0045] For example, the housing H is made of an engineering thermoplastic, such as polypropylene.
[0046] In some embodiments, such as in the non-limiting example shown in Fig. 1, the housing
H comprises a first housing part 102 and a second housing part 104. In such embodiments,
the steam generator 106 is housed between the first housing part 102 and the second
housing part 104.
[0047] The steam generator 106 can have any suitable design. In some embodiments, such as
that depicted in Fig.1, the steam generator 106 comprises a top part 108 and a bottom
part 110.
[0048] Referring to Fig.2, the top part 108 is, for example, a cover of the steam generator
106.
[0049] The cover defined by the top part 108 can cover the bottom part 110 of the steam
generator 106. In such an example, a recess is defined in the bottom part 110, and
a steam chamber 112 is provided by the cover closing the recess defined in the bottom
part 110.
[0050] The steam generator 106, and in particular the top part 108 and the bottom part 110,
can be made of any suitable material, such as a metal or metal alloy. Preferably,
the steam generator 106 is (at least partly) made of casted metal alloy.
[0051] For example, at least the bottom part 110 of the steam generator 106 is casted in
a metal alloy.
[0052] More generally, the garment steamer 100 comprises at least one metal layer 114, 116
arranged between the steam generator 106 and the housing H.
[0053] The at least one metal layer 114, 116 can act as a heat spreader by absorbing heat
from the steam generator 106 and spreading it over a surface area of the at least
one metal layer 114, 116. The at least one metal layer 114, 116 may therefore assist
to minimise or prevent hot spots on the housing H caused by the heat generated by
the steam generator 106.
[0054] In other words, the at least one metal layer 114, 116 can assist to lower the maximum
temperature on the external surface of the housing H by spreading heat from the steam
generator 106 across the at least one metal layer 114, 116. The maximum temperature
of the housing H may be lowered as a result of the inclusion of the metal layer(s)
114, 116 when the garment care device 100 reaches thermal equilibrium.
[0055] As well as the above-described heat spreading function, the at least one metal layer
114, 116 can also have a heat insulation function, since the plastic housing H may
receive less heat compared to the scenario (not shown) in which the at least one metal
layer is not included in the garment steamer.
[0056] By managing heat transfer to the housing H in these ways, the at least one metal
layer 114, 116 can improve user comfort and safety when steaming garments using the
garment steamer 100.
[0057] In some embodiments, the housing H, the steam generator 106, and the at least one
metal layer 114, 116 are configured such that the housing H of the steamer head fulfils
the temperature rise requirement of 60 K maximum, as stated in standard IEC60335-1
clause 11.8 and IEC60335-2-85, clause 11.4.
[0058] Each of the at least one metal layer 114, 116 can be formed of a metal or metal alloy.
[0059] Preferably, the at least one metal layer 114, 116 is made of aluminium. The relatively
high thermal conductivity of aluminium can make for enhanced heat spreading.
[0060] It is noted that the shape of the at least one metal layer 114, 116 is not particularly
limited, and various shapes for the metal layer(s) 114, 116 can be contemplated provided
that the metal layer(s) 114, 116 provides or provide a region of heat spreading and/or
shielding in between the steam generator 106 and the housing H.
[0061] In some embodiments, such as that shown in Figs. 1 and 2, the at least one metal
layer 114, 116 has a shape which follows at least part of an outer profile of the
steam generator 106, and/or a shape which follows at least part of the profile of
the housing. This may assist to enhance the compactness of the garment steamer 100.
[0062] For example, each of the at least one metal layer 114, 116 has a curved shape whose
curvature follows at least part of the outer profile of the steam generator 106, and/or
a curvature which follows at least part of the profile of the housing.
[0063] The at least one metal layer 114, 116 preferably comprises a first metal layer 114
extending over the top part 108 of the steam generator 106, and a second metal layer
116 extending over the bottom part 110 of the steam generator 106. In other words,
the first metal layer 114 faces the top part 108 of the steam generator 106, and the
second metal layer 116 faces the bottom part 110 of the steam generator 106. An example
of this is shown in Figs.1 and 2.
[0064] In the non-limiting example shown in Figs. 1 and 2, the first metal layer 114 has
a shape which follows an outer profile of the top part 108 of the steam generator
106.
[0065] Similarly, the second metal layer 116 has a shape which follows an outer profile
of the bottom part 110 of the steam generator 106.
[0066] In embodiments in which the at least one metal layer 114, 116 comprises the first
metal layer 114 and the second metal layer 116, these metal layers 114, 116 are preferably
separate from each other. In other words, the first metal layer (114) and the second
metal layer (116) do not contact with each other.
[0067] The first metal layer 114 being separate from, in other words not connected to, the
second metal layer 116, means that the first and second metal layers 114, 116 do not
form an enclosure around the steam generator 106. In other words, the first and second
metal layers 114, 116 do not form a closed sheath or hollow shell around the steam
generator 106. The first metal layer 114 being separate from the second metal layer
116 may assist with dissipating the heat of the steam generator 106 within the steamer
head.
[0068] Referring to Fig.3, an outer periphery OP1 of the first metal layer 114 is preferably
spaced apart from an opposing outer periphery OP2 of the second metal layer 116 by
a distance D with a value in the range [1;2] cm.
[0069] The distance D being in this [1;2] cm range can assist to balance sufficient heat
dissipation via the spacing between the first metal layer 114 and the second metal
layer 116, with sufficient coverage of the steam generator 106 by the first metal
layer 114 and the second metal layer 116 for heat spreading and heat shielding purposes.
[0070] In some embodiments, the at least one metal layer 114, 116 has a thickness being
at least 0.2 mm. Hence, the first metal layer 114 and the second metal layer 116 preferably
each have a thickness being at least 0.2 mm.
[0071] Such a minimum thickness may assist the metal layer(s) 114, 116 to spread the heat
generated by the steam generator 106, whilst also ensuring that each of the at least
one metal layer 114, 116 is sufficiently rigid and robust.
[0072] In a non-limiting example, each of the at least one metal layer 114, 116 is made
of aluminium and has a thickness being at least 0.2 mm. This combination may provide
particularly effective heat spreading and shielding to lower the maximum temperature
on the external surface of the housing H, for example such that the housing H fulfils
the temperature rise requirement of 60 K maximum, as stated in standard IEC60335-1
clause 11.8 and IEC60335-2-85, clause 11.4.
[0073] In some embodiments, the at least one metal layer 114, 116 is spaced from the steam
generator 106 so to form a first air gap 118 between the steam generator 106 and the
at least one metal layer 114, 116. An example of this is shown in Fig.4.
[0074] Such a first air gap 118 between the steam generator 106 and the at least one metal
layer 114, 116 can act as an insulation layer to assist in lowering the temperature
of the housing H.
[0075] The first air gap 118 is preferably at least 2 mm. Such a minimum spacing of 2 mm
may assist to provide sufficient insulation via the first air gap 118 between the
at least one metal layer 114, 116 and the steam generator 106.
[0076] It is noted that the first air gap 118 does not necessarily have a constant value
all around the steam generator.
[0077] In embodiments in which the at least one metal layer 114, 116 comprises the first
metal layer 114 and the second metal layer 116, the first air gap 118 can be present
between the top part 108 of the steam generator 106 and the first metal layer 114,
and/or between the bottom part 110 of the steam generator 106 and the second metal
layer 116.
[0078] In the non-limiting example shown in the Figures, the first air gap 118 is present
between the top part 108 of the steam generator 106 and the first metal layer 114,
and between the bottom part 110 of the steam generator 106 and the second metal layer
116.
[0079] Referring to Figs.4 and 5, the at least one metal layer 114, 116 is preferably spaced
from the housing H to form a second air gap 120 between the at least one metal layer
114, 116 and the housing H.
[0080] Such a second air gap 120 between the at least one metal layer 114, 116 and the housing
H can act as an insulation layer to assist in lowering the temperature of the housing
H.
[0081] The second air gap 120 is preferably at least 0.5 mm. Such a minimum spacing of 0.5
mm may assist to provide sufficient insulation via the second air gap between the
at least one metal layer 114, 116 and the housing H.
[0082] It is noted that the second air gap 120 does not necessarily have a constant value
all around the steam generator.
[0083] In embodiments in which the at least one metal layer 114, 116 comprises the first
metal layer 114 and the second metal layer 116, the second air gap 120 can be present
between the housing H and the first metal layer 114, and/or between the housing H
and the second metal layer 116.
[0084] In the non-limiting example shown in Figs.4 and 5, the second air gap 120 is present
between the first housing part 102 and the first metal layer 114, and between the
second housing part 104 and the second metal layer 116.
[0085] In embodiments in which both the first air gap 118 and the second air gap 120 are
provided, the first air gap 118 is preferably wider than the second air gap 120. This
may assist to manage heat transfer from the steam generator 106 to the housing H such
as to minimise hot spots on the housing H.
[0086] In some embodiments, the at least one metal layer 114, 116 comprises a polished reflective
surface 122, 124, with the polished reflective surface 122, 124 facing the steam generator
106. Indeed, a smooth shiny surface is a good reflector of light and radiant heat.
Polishing is a mean to achieve the shiny/glossy surface. Figs.6 and 7 show the location
(but do not illustrate the reflectivity) of the polished reflective surface 122, 124.
[0087] Such a reflective surface 122, 124, in other words shiny gloss surface, can assist
to reflect heat back towards the steam generator 106, so away from the housing H.
[0088] In embodiments in which the at least one metal layer 114, 116 comprises the first
metal layer 114 and the second metal layer 116, the first metal layer 114 can include
a first reflective surface 122 facing the steam generator 106, and/or the second metal
layer 116 can include a second reflective surface 124 facing the steam generator 106.
[0089] In the non-limiting example shown in the Figures, the steam generator-facing surface
of the second metal layer 116 comprises a recessed portion RP which is recessed relative
to neighbouring regions of the surface. Such a recessed portion RP may be provided
to, for instance, accommodate a fuse and/or thermostat 125, for controlling the steam
generator 106.
[0090] In this particular example, the above-described polished reflective surface 124 is
also present in the recessed portion RP.
[0091] In some embodiments, such as the non-limiting example shown in the Figures, the at
least one metal layer 114, 116 is fastened to the housing H at discrete fastening
points 126A, 126B, 126C, 128A, 128B.
[0092] Such discrete fastening points 126A, 126B, 126C, 128A, 128B may assist to minimise
direct heat transfer from the at least one metal layer 114, 116 to the housing H.
[0093] Any suitable fastening/locking principle can be used to fasten the at least one metal
layer 114, 116 to the housing H, such as screw fastener(s) 130, 132A, 132B, interlock
catch(es) 126A, 126B, interlock heat staking and/or gluing.
[0094] In the non-limiting example shown in the Figures, the fastening of the second metal
layer 116 to the second housing part 104 is achieved via interlock catches 126A, 126B,
such as interlock plastic catches 126A, 126B, and a screw fastener 130, as best shown
in Figs.1, 5 and 6.
[0095] In embodiments in which the at least one metal layer 114, 116 has a thickness of
at least 0.2 mm, this minimum thickness can be advantageously combined with the fastening
of the at least one metal layer 114, 116 to the housing H comprising one or more interlock
catches 126A, 126B, such as interlock plastic catches 126A, 126B.
[0096] This is because the relatively rigid metal layer(s) 114, 116 in combination with
the rigid locking principle provided by the interlock catch(es) 126A, 126B can reduce
the risk of detachment or shape change of the metal layer(s) 114, 116 during prolonged
usage.
[0097] For example, the second metal layer 116 is fastened to the second housing part 104
via interlock catches 126A, 126B and is made of aluminium having a thickness of at
least 0.2 mm.
[0098] In the non-limiting example shown in the Figures, the fastening of the first metal
layer 114 to the first housing part 102 is achieved via screw fasteners 132A, 132B,
as best shown in Figs.1 and 4. For example, the first metal layer 114 fastened to
the first housing part 102 via the screw fasteners 132A, 132B and is made of aluminium
having a thickness of at least 0.2 mm.
[0099] However, the above-described one or more interlock plastic catches can be alternatively
or additionally used to fasten the first metal layer to the first housing part (not
shown).
[0100] More generally, the at least one metal layer 114, 116 is preferably not mounted to
the steam generator 106. Hence heat may not be directly transferred from the steam
generator 106 to the metal layer(s) 114, 116 by conduction. This, in turn, can enable
various fastening/locking principles, such as the above-described interlock catch(es)
126A, 126B, to be used for fastening the at least one metal layer 114, 116 to the
housing H.
[0101] It is noted that the interlock catch(es) 126A, 126B can, for instance, be provided
at the base of one or more of the posts 134A-134B-134C-134D-134E-134F-134G-134H-134I
included in the first housing part 102 and the second housing part 104 in which threaded
holes are provided for fastening the housing parts 102, 104 to each other and/or to
other components of the steamer head using screw fasteners (not visible).
[0102] Referring again to Fig.4, a locking surface 136 can be defined as the area over which
the respective metal layer 114, 116 contacts the housing H at one fastening point
126A, 126B, 126C, 128A, 128B.
[0103] The locking surface 136 is preferably minimised in order to minimise direct heat
conduction from the metal layer 114, 116 to the housing H. For example, the locking
surface 136 is restricted to at most 80 mm
2. This upper limit may, for example, correspond to a circular locking surface whose
diameter is about 10 mm.
[0104] In general, it is preferred to have a gap between the metal layer(s) and the housing,
except at the mounting points and/or some discrete point for better support of the
metal layer(s). Total contact area between the metal layer and the housing should
not be more than 25% of the surface area of metal layer facing the housing.
[0105] More generally, the garment steamer 100 is preferably a handheld garment steamer
100.
[0106] Referring again to Figs. 1 and 2, the steam generator 106, a water tank 138 for storing
water for supplying to the steam generator 106, and a treatment plate 140 in which
at least one steam outlet 142 is provided for releasing the steam can be integrated
into a single portable hand unit when the garment steamer 100 is such a handheld garment
steamer 100.
[0107] In the non-limiting example shown in figures, the steam generator comprises a heating
element 150 for heating the steam generator to temperature above 100 degree Celsius
for generating steam with water supplied by the water tank, and the heating element
is being controlled by suitable control means, for example a thermostat.
[0108] The at least one metal layer 114, 116 can be particularly advantageous when the garment
steamer 100 is a handheld garment steamer 100 because the at least one metal layer
114, 116 can provide a way of minimising temperature increases of the housing H while
retaining a compact steamer head design which enhances portability.
[0109] In some embodiments, such as the non-limiting example shown in the Figures, the steamer
head comprises a mounting member 143 arranged to secure the treatment plate 140 to
the housing H.
[0110] The garment steamer 100 preferably comprises a handle 144 for holding the garment
steamer 100, with the steamer head being arranged at an end of the handle 144.
[0111] In some embodiments, such as that shown in Fig.1, the handle 144 includes the water
tank, 138.
[0112] Following filling of the water tank 138, the garment steamer 100 can be used to steam
garments once, for instance, the garment steamer 100 is connected to a mains supply
of electricity via a power cord 146. In the non-limiting example shown in Fig.1, the
power cord 146 connects to the handle 144 via a power cord grommet 148.
[0113] The above embodiments as described are only illustrative, and not intended to limit
the technique approaches of the present invention. Although the present invention
is described in detail referring to the preferable embodiments, those skilled in the
art will understand that the technique approaches of the present invention can be
modified or equally displaced without departing from the protective scope of the claims
of the present invention. In particular, although the invention has been described
based on a garment steamer, it can be applied to any household device, for example
handheld household device, having a steam generator. In the claims, the word "comprising"
does not exclude other elements or steps, and the indefinite article "a" or "an" does
not exclude a plurality. Any reference signs in the claims should not be construed
as limiting the scope.
1. A garment steamer (100) comprising:
- a steamer head comprising a housing (H) made of plastic material,
- a steam generator (106) for generating steam, the steam generator being contained
within the housing, and
- at least one metal layer (114, 116) being arranged between the steam generator and
the housing.
2. The garment steamer (100) according to claim 1, wherein the at least one metal layer
(114, 116) is spaced from the steam generator so as to form a first air gap (118)
between the steam generator (106) and the at least one metal layer.
3. The garment steamer (100) according to claim 2, wherein said first air gap (118) is
at least 2 mm.
4. The garment steamer (100) according to any of claims 1 to 3, wherein the at least
one metal layer (114, 116) is spaced from the housing (H) to form a second air gap
(120) between the at least one metal layer and the housing.
5. The garment steamer (100) according to claim 4 as according to claim 2 or 3, wherein
said first air gap (118) is wider than said second air gap (120).
6. The garment steamer (100) according to claim 4 or claim 5, wherein said second air
gap (120) is at least 0.5 mm.
7. The garment steamer (100) according to any one of the preceding claims, wherein the
at least one metal layer (114, 116) comprises a first metal layer (114) extending
over a top part (108) of the steam generator (106), and a second metal layer (116)
extending over a bottom part (110) of the steam generator.
8. The garment steamer (100) according to claim 7, wherein the first metal layer (114)
and the second metal layer (116) each have a thickness being at least 0.2 mm.
9. The garment steamer (100) according to claim 7 or 8, wherein the first metal layer
(114) is separate from the second metal layer (116).
10. The garment steamer (100) according to any one of claims 7 to 9, wherein an outer
periphery (OP1) of the first metal layer (114) is spaced apart from an opposing outer
periphery (OP2) of the second metal layer by a distance (D) with a value in the range
[1;2] cm.
11. The garment steamer (100) according to any one of the preceding claims, wherein the
at least one metal layer (114, 116) is made of aluminium.
12. The garment steamer (100) according to any one of the preceding claims, wherein the
at least one metal layer (114, 116) comprises a polished reflective surface (122,
124), said polished reflective surface facing the steam generator (106).
13. The garment steamer (100) according to any one of the preceding claims, wherein the
at least one metal layer (114, 116) is fastened to the housing (H) at discrete fastening
points (126A, 126B, 126C, 128A, 128B).
14. The garment steamer (100) according to any one of the preceding claims, wherein the
steam generator (106) is made of casted metal alloy.
15. The garment steamer (100) according to any one of the preceding claims, wherein the
garment steamer is a handheld garment steamer.